Top 100 Contractors in PSC R425: Engineering and Technical Services, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Northrop Grumman Systems Corporation 29 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$1,352,527,706	3.8%	Rank history: #4 in FY2021, #6 in FY2022, #4 in FY2023, #4 in FY2024 and #2 in FY2025; up 2 since Aug 2024–Jul 2025.
2	CACI International Inc. 10 awardees, including Caci, Inc. - Federal, Caci Technologies, LLC and Caci Nss, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$1,275,654,915	3.6%	Rank history: #13 in FY2021, #14 in FY2022, #12 in FY2023, #6 in FY2024 and #4 in FY2025; up 2 since Aug 2024–Jul 2025.
3	The Aerospace Corporation Top agencies USAF (Department of the Air Force) Commerce (Department of Commerce) DOI (Department of the Interior)	$1,171,735,959	3.3%	Rank history: #5 in FY2021, #4 in FY2022, #3 in FY2023, #2 in FY2024 and #3 in FY2025; down 1 since Aug 2024–Jul 2025.
4	Lockheed Martin Corporation 26 awardees, including Sikorsky Aircraft Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$1,162,292,623	3.3%	Rank history: #3 in FY2021, #2 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; down 3 since Aug 2024–Jul 2025.
5	RTX Corporation 62 awardees, including Raytheon Company, Rockwell Collins, Inc. and Raytheon Southeast Asia Systems Company Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$1,077,211,816	3.0%	Rank history: #2 in FY2021, #3 in FY2022, #9 in FY2023, #8 in FY2024 and #8 in FY2025; up 3 since Aug 2024–Jul 2025.
6	Amentum Holdings, Inc. 7 awardees, including Amentum Technology, Inc., JT4 LLC and Amentum Services, Inc. Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$1,031,554,546	2.9%	Rank history: not on the FY2021–FY2024 lists and #5 in FY2025; unchanged since Aug 2024–Jul 2025.
7	Booz Allen Hamilton Holding Corporation 3 awardees, including Booz Allen Hamilton Inc., Ultra Electronics Advanced Tactical Systems Inc. and Aquilent, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$792,304,309	2.2%	Rank history: #7 in FY2021, #5 in FY2022, #2 in FY2023, #5 in FY2024 and #7 in FY2025; unchanged since Aug 2024–Jul 2025.
8	The Mitre Corporation 2 awardees Top agencies USAF (Department of the Air Force) DOT (Department of Transportation) Commerce (Department of Commerce)	$746,408,511	2.1%	Rank history: #11 in FY2021, #10 in FY2022, #11 in FY2023, #10 in FY2024 and #12 in FY2025; up 22 since Aug 2024–Jul 2025.
9	General Dynamics Corporation 22 awardees, including General Dynamics Information Technology, Inc., General Dynamics Global Force, LLC and General Dynamics Mission Systems, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$740,176,845	2.1%	Rank history: #10 in FY2021, #8 in FY2022, #7 in FY2023, #11 in FY2024 and #13 in FY2025; up 1 since Aug 2024–Jul 2025.
10	Leidos Holdings, Inc. 12 awardees, including Leidos, Inc., Dynetics, Inc. and Gibbs & Cox, Inc. Top agencies Army (Department of the Army) DOE (Department of Energy) USAF (Department of the Air Force)	$727,059,706	2.0%	Rank history: #6 in FY2021, #9 in FY2022, #14 in FY2023, #9 in FY2024 and #9 in FY2025; down 1 since Aug 2024–Jul 2025.
11	Astrion Group, LLC 5 awardees, including Beyond New Horizons, LLC, Oasis Systems, LLC and Axient LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$693,505,931	1.9%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; new, not ranked in Aug 2024–Jul 2025.
12	BAE Systems 17 awardees, including BAE Systems Land & Armaments L.P., BAE Systems Information and Electronic Systems Integration Inc. and BAE Systems Technology Solutions & Services Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$689,534,216	1.9%	Rank history: #17 in FY2021, #13 in FY2022, #10 in FY2023, #14 in FY2024 and #10 in FY2025; up 2 since Aug 2024–Jul 2025.
13	Science Applications International Corporation Top agencies Navy (Department of the Navy) DOT (Department of Transportation) USAF (Department of the Air Force)	$637,597,205	1.8%	Rank history: #9 in FY2021, #7 in FY2022, #6 in FY2023, #12 in FY2024 and #14 in FY2025; down 1 since Aug 2024–Jul 2025.
14	General Atomics Aeronautical Systems, Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) Navy (Department of the Navy)	$608,116,327	1.7%	Rank history: not on the FY2021–FY2023 lists, #56 in FY2024 and #18 in FY2025; up 5 since Aug 2024–Jul 2025.
15	L3Harris Technologies, Inc. 25 awardees, including L3Harris Technologies Integrated Systems L.P., L3 Technologies, Inc. and Harris Corporation Top agencies USAF (Department of the Air Force) DOT (Department of Transportation) USSOCOM (United States Special Operations Command)	$585,734,685	1.6%	Rank history: #12 in FY2021, #12 in FY2022, #13 in FY2023, #15 in FY2024 and #17 in FY2025; down 2 since Aug 2024–Jul 2025.
16	Parsons Corporation 6 awardees, including Parsons Government Services Inc., Xator LLC and Parsons Government Services International Inc. Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force) DOS (Department of State)	$583,917,225	1.6%	Rank history: #20 in FY2021, #19 in FY2022, #17 in FY2023, #16 in FY2024 and #16 in FY2025; down 1 since Aug 2024–Jul 2025.
17	The Boeing Company 18 awardees, including Boeing Sikorsky Aircraft Support, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$561,106,545	1.6%	Rank history: #8 in FY2021, #11 in FY2022, #8 in FY2023, #7 in FY2024 and #15 in FY2025; down 6 since Aug 2024–Jul 2025.
18	Chemonics International, Inc. Top agencies USAID (US Agency for International Development)	$407,719,194	1.1%	Rank history: #1 in FY2021, #1 in FY2022, #5 in FY2023, #3 in FY2024 and #6 in FY2025; down 13 since Aug 2024–Jul 2025.
19	Huntington Ingalls Industries, Inc. 6 awardees, including HII Mission Technologies Corp, HII Technical Solutions Corporation and HII Fleet Support Group LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$401,701,125	1.1%	Rank history: #36 in FY2021, #25 in FY2022, #19 in FY2023, #17 in FY2024 and #20 in FY2025; down 1 since Aug 2024–Jul 2025.
20	Odyssey Systems Consulting Group, Ltd. Top agencies USAF (Department of the Air Force)	$375,420,719	1.1%	Rank history: #87 in FY2021, not on the FY2022 list, #92 in FY2023, not on the FY2024 list and #21 in FY2025; up 1 since Aug 2024–Jul 2025.
21	Microsoft Corporation 2 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army) DISA (Defense Information Systems Agency)	$331,051,965	0.9%	Rank history: #21 in FY2021, #23 in FY2022, #24 in FY2023, #19 in FY2024 and #23 in FY2025; up 1 since Aug 2024–Jul 2025.
22	Torch Technologies Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$312,788,135	0.9%	Rank history: #15 in FY2021, #24 in FY2022, #21 in FY2023, #24 in FY2024 and #22 in FY2025; up 1 since Aug 2024–Jul 2025.
23	Serco Inc Top agencies Navy (Department of the Navy) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$310,136,271	0.9%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2023, #26 in FY2024 and #24 in FY2025; up 5 since Aug 2024–Jul 2025.
24	Leonardo S.p.A. 6 awardees, including DRS Sustainment Systems, Inc., DRS Network & Imaging Systems LLC and Laurel Technologies Partnership Top agencies Army (Department of the Army) Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$282,174,455	0.8%	Rank history: #37 in FY2021, #36 in FY2022, #20 in FY2023, #29 in FY2024 and #19 in FY2025; up 10 since Aug 2024–Jul 2025.
25	Accenture Federal Services LLC 3 awardees, including Cognosante MVH LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Treasury (Department of the Treasury)	$281,190,041	0.8%	Rank history: not on the FY2021–FY2023 lists, #34 in FY2024 and #37 in FY2025; up 12 since Aug 2024–Jul 2025.
26	Scientific Research Corporation Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$245,618,610	0.7%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2023, #40 in FY2024 and #29 in FY2025; up 7 since Aug 2024–Jul 2025.
27	BWX Technologies, Inc. 2 awardees, including Bwxt Enrichment Operations, LLC Top agencies DOE (Department of Energy)	$230,377,952	0.6%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; new, not ranked in Aug 2024–Jul 2025.
28	Intuitive Research and Technology Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$218,607,081	0.6%	Rank history: #33 in FY2021, #58 in FY2022, #54 in FY2023, #47 in FY2024 and not on the FY2025 list; up 16 since Aug 2024–Jul 2025.
29	Noblis, Inc. 2 awardees, including Noblis MSD LLC Top agencies DOT (Department of Transportation) Navy (Department of the Navy) DTRA (Defense Threat Reduction Agency)	$213,177,070	0.6%	Rank history: #42 in FY2021, #33 in FY2022, #33 in FY2023, #52 in FY2024 and #32 in FY2025; up 20 since Aug 2024–Jul 2025.
30	Kbr, Inc. 4 awardees, including Linquest Corporation and KBR Wyle Services, LLC Top agencies USAF (Department of the Air Force) DOI (Department of the Interior) NASA (National Aeronautics and Space Administration)	$196,714,910	0.6%	Rank history: #24 in FY2021, #26 in FY2022, #26 in FY2023, #83 in FY2024 and #47 in FY2025; new, not ranked in Aug 2024–Jul 2025.
31	Arctic Slope Regional Corporation 15 awardees, including Agile Decision Sciences, LLC, Netcentric Technology, LLC and Asrc Federal System Solutions LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) DOT (Department of Transportation)	$189,411,880	0.5%	Rank history: #29 in FY2021, #29 in FY2022, #38 in FY2023, #44 in FY2024 and #27 in FY2025; up 10 since Aug 2024–Jul 2025.
32	ManTech International Corporation 3 awardees, including Mantech Advanced Systems International, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$181,843,373	0.5%	Rank history: #18 in FY2021, #16 in FY2022, #30 in FY2023, #36 in FY2024 and #28 in FY2025; down 5 since Aug 2024–Jul 2025.
33	KBR Wyle Services LLC 6 awardees, including KBR Services, LLC Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) DOT (Department of Transportation)	$175,640,973	0.5%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #26 in FY2025; down 9 since Aug 2024–Jul 2025.
34	Trace Systems, Inc. Top agencies Army (Department of the Army)	$166,094,399	0.5%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; up 17 since Aug 2024–Jul 2025.
35	SRC Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$163,966,103	0.5%	Rank history: #55 in FY2021, #48 in FY2022, #31 in FY2023, #25 in FY2024 and #33 in FY2025; down 6 since Aug 2024–Jul 2025.
36	V2X, Inc. 5 awardees, including V2X Aerospace LLC, V2X Systems LLC and Vertex Modernization and Sustainment LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$157,962,754	0.4%	Rank history: not on the FY2021–FY2023 lists, #57 in FY2024 and #43 in FY2025; up 9 since Aug 2024–Jul 2025.
37	Oshkosh Corporation Through Oshkosh Defense LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$155,003,441	0.4%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; up 93 since Aug 2024–Jul 2025.
38	Ukpeagvik Inupiat Corporation 9 awardees, including Bowhead Program Management & Operations, LLC, Bowhead Weapons Development Solutions LLC and Bowhead Enterprise, Science and Technology, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$152,068,610	0.4%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; new, not ranked in Aug 2024–Jul 2025.
39	Mag DS Corp Top agencies Army (Department of the Army)	$137,554,632	0.4%	Rank history: #27 in FY2021, #20 in FY2022, #28 in FY2023, not on the FY2024 list and #46 in FY2025; new, not ranked in Aug 2024–Jul 2025.
40	Deloitte 2 awardees, including Deloitte Consulting LLP and Deloitte & Touche LLP Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$137,171,488	0.4%	Rank history: not on the FY2021–FY2023 lists, #35 in FY2024 and #49 in FY2025; down 4 since Aug 2024–Jul 2025.
41	Path Top agencies USAID (US Agency for International Development)	$135,062,532	0.4%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; up 105 since Aug 2024–Jul 2025.
42	Applied Research Associates, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DHS (Department of Homeland Security)	$129,993,349	0.4%	Rank history: #60 in FY2021, #39 in FY2022, #34 in FY2023, #50 in FY2024 and #48 in FY2025; up 1 since Aug 2024–Jul 2025.
43	Trax International Corporation Top agencies Army (Department of the Army)	$127,916,878	0.4%	Rank history: not on the FY2021–FY2025 lists; up 191 since Aug 2024–Jul 2025.
44	Anduril Industries Inc. 2 awardees Top agencies USSOCOM (United States Special Operations Command) Navy (Department of the Navy) USAF (Department of the Air Force)	$126,325,949	0.4%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023, #37 in FY2024 and #50 in FY2025; down 5 since Aug 2024–Jul 2025.
45	P E Systems, Inc. Top agencies USAF (Department of the Air Force)	$125,937,385	0.4%	Rank history: #59 in FY2021, #92 in FY2022, #71 in FY2023, #78 in FY2024 and #44 in FY2025; up 17 since Aug 2024–Jul 2025.
46	CQ JV, LLC Top agencies USAF (Department of the Air Force)	$124,602,614	0.3%	Rank history: not on the FY2021 list, #54 in FY2022, #62 in FY2023, #64 in FY2024 and #45 in FY2025; up 1 since Aug 2024–Jul 2025.
47	The Johns Hopkins University Applied Physics Laboratory LLC Top agencies USAF (Department of the Air Force) USCYBERCOM (Department of Defense Cyber Command) DHS (Department of Homeland Security)	$115,268,975	0.3%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in Aug 2024–Jul 2025.
48	Bristol Bay Native Corporation 7 awardees, including STS Systems Defense LLC, STS Government Solutions, LLC and STS Systems Support, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$112,927,113	0.3%	Rank history: not on the FY2021–FY2024 lists and #42 in FY2025; up 308 since Aug 2024–Jul 2025.
49	Sev1Tech, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$108,564,116	0.3%	Rank history: #39 in FY2021, #44 in FY2022, #45 in FY2023, #53 in FY2024 and #34 in FY2025; down 14 since Aug 2024–Jul 2025.
50	American Systems Corporation 2 awardees Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$108,385,884	0.3%	Rank history: #57 in FY2021, #78 in FY2022, #59 in FY2023, #70 in FY2024 and #88 in FY2025; up 19 since Aug 2024–Jul 2025.
51	QED Systems LLC Top agencies Army (Department of the Army)	$106,546,400	0.3%	Rank history: #51 in FY2021, #66 in FY2022, #50 in FY2023, not on the FY2024 list and #54 in FY2025; up 15 since Aug 2024–Jul 2025.
52	Modern Technology Solutions, Inc. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security)	$103,293,827	0.3%	Rank history: #62 in FY2021, #68 in FY2022, #93 in FY2023, not on the FY2024 list and #94 in FY2025; up 59 since Aug 2024–Jul 2025.
53	Tetra Tech, Inc. 10 awardees, including Halvik LLC, LS Technologies LLC and Tetra TECH MA, Inc. Top agencies Army (Department of the Army) DOT (Department of Transportation) Navy (Department of the Navy)	$103,226,269	0.3%	Rank history: #85 in FY2021, #95 in FY2022, #72 in FY2023, #46 in FY2024 and #39 in FY2025; down 11 since Aug 2024–Jul 2025.
54	Consortium Management Group, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$103,051,715	0.3%	Rank history: not on the FY2021 list, #70 in FY2022, #63 in FY2023, #58 in FY2024 and #56 in FY2025; up 10 since Aug 2024–Jul 2025.
55	Systems Application & Technologies Inc. 2 awardees, including Southwest Range Services LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$98,341,103	0.3%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; new, not ranked in Aug 2024–Jul 2025.
56	Guidehouse Inc. 5 awardees, including Peraton Inc. and Peraton Technology Services Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$96,789,844	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
57	Sigmatech Inc. 2 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$95,230,780	0.3%	Rank history: not on the FY2021–FY2023 lists, #77 in FY2024 and #60 in FY2025; up 21 since Aug 2024–Jul 2025.
58	Analex Corporation 3 awardees, including Rite-Solutions, Inc. and Strategic Technology Consulting LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$94,013,939	0.3%	Rank history: not on the FY2021–FY2025 lists; up 215 since Aug 2024–Jul 2025.
59	ABT Global LLC Top agencies USAID (US Agency for International Development) HHS (Department of Health and Human Services) DOE (Department of Energy)	$91,946,442	0.3%	Rank history: #25 in FY2021, #31 in FY2022, #42 in FY2023, #38 in FY2024 and #36 in FY2025; new, not ranked in Aug 2024–Jul 2025.
60	Sayres and Associates LLC 3 awardees, including Global Systems Technologies, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$84,920,643	0.2%	Rank history: not on the FY2021–FY2023 lists, #96 in FY2024 and #70 in FY2025; up 41 since Aug 2024–Jul 2025.
61	Gryphon Technologies L.C. Top agencies Navy (Department of the Navy)	$82,367,287	0.2%	Rank history: not on the FY2021–FY2023 lists, #60 in FY2024 and #69 in FY2025; up 13 since Aug 2024–Jul 2025.
62	Georgia TECH Research Corp Through Georgia TECH Applied Research Corp Top agencies USAF (Department of the Air Force)	$80,846,499	0.2%	Rank history: #47 in FY2021, #40 in FY2022, #53 in FY2023, not on the FY2024 list and #53 in FY2025; new, not ranked in Aug 2024–Jul 2025.
63	Bell Boeing Joint Project Office Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$79,873,393	0.2%	Rank history: not on the FY2021–FY2023 lists, #45 in FY2024 and #52 in FY2025; up 5 since Aug 2024–Jul 2025.
64	Karsun Solutions LLC Top agencies DOT (Department of Transportation)	$79,012,219	0.2%	Rank history: #63 in FY2021, #67 in FY2022, #67 in FY2023, #80 in FY2024 and #64 in FY2025; up 15 since Aug 2024–Jul 2025.
65	Sigma Defense Systems LLC 2 awardees, including Juno Technologies, LLC Top agencies Navy (Department of the Navy) DISA (Defense Information Systems Agency) USAF (Department of the Air Force)	$77,298,198	0.2%	Rank history: not on the FY2021–FY2022 lists, #57 in FY2023, #87 in FY2024 and #73 in FY2025; up 12 since Aug 2024–Jul 2025.
66	Systems Planning and Analysis, Inc. 4 awardees, including Group W Inc. and MCR Federal, LLC Top agencies Navy (Department of the Navy) DTRA (Defense Threat Reduction Agency) OSD (Office of the Secretary of Defense)	$74,459,196	0.2%	Rank history: #64 in FY2021, #43 in FY2022, #46 in FY2023, #41 in FY2024 and #25 in FY2025; down 28 since Aug 2024–Jul 2025.
67	Intuitive Machines, LLC Through Space Network Solutions LLC Top agencies NASA (National Aeronautics and Space Administration)	$74,379,520	0.2%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; new, not ranked in Aug 2024–Jul 2025.
68	Aviation Systems Engineering Company Inc. Top agencies Navy (Department of the Navy)	$72,945,732	0.2%	Rank history: not on the FY2021–FY2023 lists, #93 in FY2024 and #91 in FY2025; up 15 since Aug 2024–Jul 2025.
69	Delphinus Engineering LLC Top agencies Navy (Department of the Navy)	$72,915,833	0.2%	Rank history: #53 in FY2021, #50 in FY2022, #87 in FY2023, #84 in FY2024 and #58 in FY2025; down 14 since Aug 2024–Jul 2025.
70	MP Solutions, LLC Top agencies MDA (DOD Missile Defense Agency) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$70,823,437	0.2%	Rank history: not on the FY2021 list, #69 in FY2022, #82 in FY2023, #66 in FY2024 and #85 in FY2025; up 11 since Aug 2024–Jul 2025.
71	Aerodyne-Sgt Engineering Services, LLC Top agencies NASA (National Aeronautics and Space Administration)	$69,966,166	0.2%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023, #55 in FY2024 and #55 in FY2025; down 10 since Aug 2024–Jul 2025.
72	Energy Technology Alliance LLC Top agencies DOE (Department of Energy)	$69,054,506	0.2%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #61 in FY2025; down 22 since Aug 2024–Jul 2025.
73	Utah State University 2 awardees, including Utah State University Space Dynamics Laboratory Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$67,661,835	0.2%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; new, not ranked in Aug 2024–Jul 2025.
74	Avion Solutions, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$67,588,229	0.2%	Rank history: not on the FY2021–FY2025 lists; up 35 since Aug 2024–Jul 2025.
75	Vsolvit LLC Top agencies Navy (Department of the Navy)	$66,552,442	0.2%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; up 18 since Aug 2024–Jul 2025.
76	Simventions Inc. Top agencies Navy (Department of the Navy)	$66,534,496	0.2%	Rank history: #99 in FY2021, #83 in FY2022, #85 in FY2023, #85 in FY2024 and #76 in FY2025; up 6 since Aug 2024–Jul 2025.
77	Peraton Inc. 3 awardees, including Peraton Enterprise Solutions LLC Top agencies Army (Department of the Army) DOT (Department of Transportation) Navy (Department of the Navy)	$66,531,772	0.2%	Rank history: not on the FY2021–FY2023 lists, #62 in FY2024 and #51 in FY2025; down 14 since Aug 2024–Jul 2025.
78	Indus Technology Inc. Top agencies Navy (Department of the Navy)	$65,139,045	0.2%	Rank history: #96 in FY2021, #99 in FY2022, #90 in FY2023, #88 in FY2024 and #90 in FY2025; up 12 since Aug 2024–Jul 2025.
79	Teledyne Flir Unmanned Ground Systems Inc 5 awardees, including Teledyne Brown Engineering, Inc., Teledyne Flir Defense, LLC and Teledyne Reson Inc. Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) Navy (Department of the Navy)	$64,459,267	0.2%	Rank history: #81 in FY2021, #94 in FY2022, #68 in FY2023, #82 in FY2024 and #78 in FY2025; up 6 since Aug 2024–Jul 2025.
80	Georgia TECH Applied Research Corp Top agencies USAF (Department of the Air Force)	$64,287,364	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
81	Mele Associates Inc. Top agencies DOE (Department of Energy)	$63,267,740	0.2%	Rank history: not on the FY2021–FY2025 lists; up 57 since Aug 2024–Jul 2025.
82	Colsa Corp Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$62,879,857	0.2%	Rank history: #22 in FY2021, #45 in FY2022, #61 in FY2023, #63 in FY2024 and #66 in FY2025; up 38 since Aug 2024–Jul 2025.
83	Sumaria Systems, LLC Top agencies USAF (Department of the Air Force)	$62,111,663	0.2%	Rank history: not on the FY2021 list, #88 in FY2022, #94 in FY2023, not on the FY2024 list and #80 in FY2025; up 17 since Aug 2024–Jul 2025.
84	Janus Research Group, LLC Top agencies Army (Department of the Army)	$61,993,462	0.2%	Rank history: #89 in FY2021, #90 in FY2022, not on the FY2023–FY2024 lists and #75 in FY2025; down 9 since Aug 2024–Jul 2025.
85	Raytheon / Lockheed Martin Javelin JV Top agencies Army (Department of the Army)	$61,669,522	0.2%	Rank history: not on the FY2021–FY2024 lists and #67 in FY2025; up 125 since Aug 2024–Jul 2025.
86	NOU Systems Inc. 2 awardees, including Ntsi LLC Top agencies MDA (DOD Missile Defense Agency) OSD (Office of the Secretary of Defense)	$61,231,794	0.2%	Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; new, not ranked in Aug 2024–Jul 2025.
87	Reliability & Performance Technologies, LLC Top agencies Navy (Department of the Navy)	$61,062,129	0.2%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; up 1 since Aug 2024–Jul 2025.
88	Agile JV, LLC Top agencies Navy (Department of the Navy)	$59,402,402	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
89	DCS Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$59,109,701	0.2%	Rank history: #28 in FY2021, #28 in FY2022, #27 in FY2023, #54 in FY2024 and #57 in FY2025; down 18 since Aug 2024–Jul 2025.
90	Rsi-Quantitech JV LLC Top agencies NASA (National Aeronautics and Space Administration)	$58,786,845	0.2%	Rank history: not on the FY2021–FY2023 lists, #95 in FY2024 and #87 in FY2025; up 39 since Aug 2024–Jul 2025.
91	F3Ea Inc. Top agencies Army (Department of the Army)	$58,613,707	0.2%	Rank history: not on the FY2021–FY2025 lists; up 170 since Aug 2024–Jul 2025.
92	W R Systems Ltd. Top agencies Navy (Department of the Navy)	$58,259,226	0.2%	Rank history: not on the FY2021–FY2025 lists; up 63 since Aug 2024–Jul 2025.
93	IAP World Services, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$57,135,322	0.2%	Rank history: not on the FY2021–FY2025 lists; up 201 since Aug 2024–Jul 2025.
94	Falconwood Top agencies Navy (Department of the Navy)	$55,940,639	0.2%	Rank history: #84 in FY2021, #76 in FY2022, #76 in FY2023, #91 in FY2024 and #82 in FY2025; up 10 since Aug 2024–Jul 2025.
95	Ameresco Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$55,721,987	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
96	Bering Straits Native Corporation 5 awardees, including Arcticom, LLC, Pololei Solutions, LLC and Bering Straits Professional Services, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) HHS (Department of Health and Human Services)	$55,550,114	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
97	Globalfoundries U.S. Inc. Through Globalfoundries U.s. 2 LLC Top agencies DMEA (Defense Microelectronics Activity)	$54,417,088	0.2%	Rank history: not on the FY2021–FY2025 lists; up 53 since Aug 2024–Jul 2025.
98	Oceaneering International Inc. Top agencies Navy (Department of the Navy)	$54,311,004	0.2%	Rank history: not on the FY2021–FY2025 lists; up 214 since Aug 2024–Jul 2025.
99	T-Solutions, Inc. Top agencies Navy (Department of the Navy)	$53,881,084	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
100	Vettech LLC Top agencies MDA (DOD Missile Defense Agency) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$53,336,591	0.1%	Rank history: not on the FY2021–FY2025 lists; up 7 since Aug 2024–Jul 2025.

How this ranking works

• Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
• Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $35.6 billion obligated before deobligations, so they never pass 100%.
• Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
• Rank changes compare with Aug 2024–Jul 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers