Top 100 Contractors in NAICS 541712: Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology), FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Massachusetts Institute of Technology 3 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$1,461,186,946	13.7%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	Brookhaven Science Associates LLC Top agencies DOE (Department of Energy)	$797,151,609	7.5%	Rank history: #5 in FY2021, #2 in FY2022, #3 in FY2023 and #2 in FY2025; up 1 since FY2023.
3	Science Applications International Corporation 5 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$726,869,141	6.8%	Rank history: #2 in FY2021, #3 in FY2022, #2 in FY2023 and #4 in FY2025; down 1 since FY2023.
4	Torch Technologies Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) MDA (DOD Missile Defense Agency)	$441,148,082	4.1%	Rank history: #15 in FY2021, #6 in FY2022, #4 in FY2023 and #3 in FY2025; unchanged since FY2023.
5	Odyssey Systems Consulting Group Ltd. 2 awardees Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency) Navy (Department of the Navy)	$389,805,151	3.7%	Rank history: #38 in FY2021, #33 in FY2022, #11 in FY2023 and #6 in FY2025; up 6 since FY2023.
6	L3Harris Technologies, Inc. 16 awardees, including Aerojet Rocketdyne of DE, Inc., Aerojet Rocketdyne, Inc. and L3 Adaptive Methods, Inc. Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$343,963,164	3.2%	Rank history: #48 in FY2021, #78 in FY2022, #96 in FY2023 and #9 in FY2025; up 90 since FY2023.
7	Booz Allen Hamilton Holding Corporation 2 awardees, including Booz Allen Hamilton Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$268,536,396	2.5%	Rank history: #12 in FY2021, #12 in FY2022, #8 in FY2023 and #12 in FY2025; up 1 since FY2023.
8	Mag DS Corp Top agencies Army (Department of the Army) DISA (Defense Information Systems Agency)	$234,924,333	2.2%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2025; new.
9	General Dynamics Global Force, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$217,722,479	2.0%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2025; new.
10	Intrepid LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$216,104,412	2.0%	Rank history: not on the FY2021–FY2023 lists and #11 in FY2025; new.
11	Applied Research Solutions, Inc. Top agencies USAF (Department of the Air Force)	$189,635,085	1.8%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
12	Jacobs Engineering Group Inc. 6 awardees, including Amentum Technology, Inc. and The Keyw Corporation Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$177,610,907	1.7%	Rank history: #4 in FY2021, #4 in FY2022, #5 in FY2023 and not on the FY2025 list; down 7 since FY2023.
13	Tecolote Research, Inc. Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security) Navy (Department of the Navy)	$177,484,910	1.7%	Rank history: #27 in FY2021, #24 in FY2022, #18 in FY2023 and #14 in FY2025; up 5 since FY2023.
14	Applied Research Associates, Inc. Top agencies DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$172,222,073	1.6%	Rank history: #22 in FY2021, #18 in FY2022, #17 in FY2023 and #20 in FY2025; up 3 since FY2023.
15	Carnegie Mellon University 3 awardees Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$164,686,576	1.5%	Rank history: #28 in FY2021, #26 in FY2022, #24 in FY2023 and #25 in FY2025; up 9 since FY2023.
16	Northrop Grumman Corporation 27 awardees, including Northrop Grumman Systems Corporation Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$163,112,290	1.5%	Rank history: #13 in FY2021, #8 in FY2022, #10 in FY2023 and #8 in FY2025; down 6 since FY2023.
17	Leidos Holdings, Inc. 8 awardees, including Leidos, Inc. and Aranea Solutions Inc. Top agencies DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$152,927,132	1.4%	Rank history: #7 in FY2021, #10 in FY2022, #12 in FY2023 and #26 in FY2025; down 5 since FY2023.
18	Amentum Technology, Inc. Top agencies MDA (DOD Missile Defense Agency)	$150,259,559	1.4%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2025; new.
19	Modern Technology Solutions, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$149,241,907	1.4%	Rank history: #45 in FY2021, #29 in FY2022, #22 in FY2023 and #10 in FY2025; up 3 since FY2023.
20	Oasis Systems, LLC Top agencies USAF (Department of the Air Force)	$133,411,982	1.3%	Rank history: #17 in FY2021, #7 in FY2022, #16 in FY2023 and #15 in FY2025; down 4 since FY2023.
21	Raytheon Company Top agencies USAF (Department of the Air Force)	$131,066,372	1.2%	Rank history: not on the FY2021 list, #100 in FY2022, not on the FY2023 list and #28 in FY2025; returned.
22	Sigmatech Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$117,817,731	1.1%	Rank history: #46 in FY2021, #43 in FY2022, #36 in FY2023 and #23 in FY2025; up 14 since FY2023.
23	Radiance Technologies, Inc. 2 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$115,729,834	1.1%	Rank history: #20 in FY2021, #19 in FY2022, #20 in FY2023 and #35 in FY2025; down 3 since FY2023.
24	KBR Wyle Services LLC 6 awardees Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$113,647,385	1.1%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2025; new.
25	DCS Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$106,843,635	1.0%	Rank history: #32 in FY2021, #36 in FY2022, #25 in FY2023 and #31 in FY2025; unchanged since FY2023.
26	Axient LLC Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$106,806,691	1.0%	Rank history: #40 in FY2021, #32 in FY2022, #27 in FY2023 and #27 in FY2025; up 1 since FY2023.
27	Colsa Corp Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$106,291,420	1.0%	Rank history: #16 in FY2021, #27 in FY2022, #30 in FY2023 and #30 in FY2025; up 3 since FY2023.
28	RTX Corporation 12 awardees, including Raytheon Company and Hamilton Sundstrand Space Systems International, Inc. Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency) MDA (DOD Missile Defense Agency)	$87,616,308	0.8%	Rank history: #3 in FY2021, #9 in FY2022, #7 in FY2023 and #16 in FY2025; down 21 since FY2023.
29	QED Systems LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$83,713,562	0.8%	Rank history: #55 in FY2021, #45 in FY2022, #29 in FY2023 and #18 in FY2025; unchanged since FY2023.
30	HX5 LLC Top agencies USAF (Department of the Air Force)	$82,584,178	0.8%	Rank history: #30 in FY2021, #30 in FY2022, #43 in FY2023 and #38 in FY2025; up 13 since FY2023.
31	Arctic Slope Regional Corporation 6 awardees, including Asrc Federal System Solutions LLC, Data Networks, Inc. and Analytical Services, Inc. Top agencies USAF (Department of the Air Force) Commerce (Department of Commerce) MDA (DOD Missile Defense Agency)	$75,022,654	0.7%	Rank history: #25 in FY2021, #21 in FY2022, #34 in FY2023 and #7 in FY2025; up 3 since FY2023.
32	P E Systems, Inc. Top agencies USAF (Department of the Air Force)	$71,305,445	0.7%	Rank history: #44 in FY2021, #54 in FY2022, #35 in FY2023 and #22 in FY2025; up 3 since FY2023.
33	University of Texas System 2 awardees, including University of Texas At Austin Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$70,409,855	0.7%	Rank history: #33 in FY2021, #28 in FY2022, #26 in FY2023 and not on the FY2025 list; down 7 since FY2023.
34	Sumaria Systems, LLC Top agencies USAF (Department of the Air Force)	$69,943,436	0.7%	Rank history: #53 in FY2021, #42 in FY2022, #37 in FY2023 and #33 in FY2025; up 3 since FY2023.
35	Sev1Tech, LLC Top agencies Army (Department of the Army)	$69,890,544	0.7%	Rank history: #34 in FY2021, #34 in FY2022, #28 in FY2023 and #24 in FY2025; down 7 since FY2023.
36	Mantech International Corporation 2 awardees, including Mantech Advanced Systems International, Inc. Top agencies Navy (Department of the Navy)	$67,531,732	0.6%	Rank history: #39 in FY2021, #25 in FY2022, #31 in FY2023 and not on the FY2025 list; down 5 since FY2023.
37	University of Texas At Austin Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$61,641,788	0.6%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2025; up 202 since FY2023.
38	Kbr, Inc. 6 awardees, including KBR Wyle Services, LLC Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) USAF (Department of the Air Force)	$59,635,611	0.6%	Rank history: #11 in FY2021, #16 in FY2022, #19 in FY2023 and not on the FY2025 list; down 19 since FY2023.
39	Teledyne Technologies Incorporated 5 awardees, including Teledyne Brown Engineering, Inc. Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$58,300,391	0.5%	Rank history: #36 in FY2021, #41 in FY2022, #44 in FY2023 and #34 in FY2025; up 5 since FY2023.
40	MCR LLC Through MCR Federal, LLC Top agencies USAF (Department of the Air Force)	$57,448,822	0.5%	Rank history: #63 in FY2021, #57 in FY2022, #42 in FY2023 and #84 in FY2025; up 2 since FY2023.
41	L3HARRIS Aviation Products Inc 4 awardees, including Aerojet Rocketdyne of DE, Inc. and Aerojet Rocketdyne, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$57,420,000	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
42	General Dynamics Corporation 9 awardees, including General Dynamics Global Force, LLC and General Dynamics Information Technology, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$56,130,221	0.5%	Rank history: #19 in FY2021, #14 in FY2022, #13 in FY2023 and #17 in FY2025; down 29 since FY2023.
43	Mantech Advanced Systems International, Inc. Top agencies Navy (Department of the Navy)	$55,742,833	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
44	The Boeing Company 19 awardees, including Insitu, Inc. and HRL Laboratories, LLC Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) MDA (DOD Missile Defense Agency)	$54,606,859	0.5%	Rank history: #26 in FY2021, #40 in FY2022, #40 in FY2023 and not on the FY2025 list; down 4 since FY2023.
45	Universal Technical Resource Services Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$52,306,871	0.5%	Rank history: not on the FY2021 list, #76 in FY2022, #49 in FY2023 and #43 in FY2025; up 4 since FY2023.
46	SMS Data Products Group Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$51,751,765	0.5%	Rank history: #67 in FY2021, #56 in FY2022, #45 in FY2023 and #32 in FY2025; down 1 since FY2023.
47	Amentum Services, Inc. 2 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army)	$47,163,228	0.4%	Rank history: #31 in FY2021, #37 in FY2022, #53 in FY2023 and not on the FY2025 list; up 6 since FY2023.
48	Westat, Inc. Top agencies HHS (Department of Health and Human Services)	$45,578,053	0.4%	Rank history: #51 in FY2021, #39 in FY2022, #58 in FY2023 and not on the FY2025 list; up 10 since FY2023.
49	Data Systems Analysts Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$43,785,906	0.4%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023 and #39 in FY2025; up 2 since FY2023.
50	Adams Communication & Engineering Technology, Inc. Top agencies Navy (Department of the Navy)	$37,905,361	0.4%	Rank history: #72 in FY2021, #80 in FY2022, #100 in FY2023 and #45 in FY2025; up 50 since FY2023.
51	Aaski Technology Inc. Through Mag DS Corp Top agencies Army (Department of the Army)	$36,374,136	0.3%	Rank history: #23 in FY2021, #13 in FY2022, #14 in FY2023 and not on the FY2025 list; down 37 since FY2023.
52	Battelle Memorial Institute 3 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$35,778,894	0.3%	Rank history: #29 in FY2021, #44 in FY2022, #41 in FY2023 and #40 in FY2025; down 11 since FY2023.
53	Science Systems and Applications, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$34,046,166	0.3%	Rank history: #84 in FY2021, #63 in FY2022, #48 in FY2023 and #44 in FY2025; down 5 since FY2023.
54	Astrion Group, LLC Top agencies Army (Department of the Army)	$33,053,508	0.3%	Rank history: #35 in FY2021, #31 in FY2022, #32 in FY2023 and not on the FY2025 list; down 22 since FY2023.
55	CACI International Inc. 4 awardees, including Caci, Inc. - Federal and Caci Technologies, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$31,399,313	0.3%	Rank history: #21 in FY2021, #22 in FY2022, #23 in FY2023 and not on the FY2025 list; down 32 since FY2023.
56	Peerless Technologies Corporation Top agencies USAF (Department of the Air Force)	$31,120,579	0.3%	Rank history: not on the FY2021 list, #86 in FY2022, #74 in FY2023 and #55 in FY2025; up 18 since FY2023.
57	EPS Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$27,277,827	0.3%	Rank history: not on the FY2021 list, #72 in FY2022, not on the FY2023 list and #47 in FY2025; returned.
58	System High Corporation Top agencies MDA (DOD Missile Defense Agency)	$26,628,912	0.2%	Rank history: not on the FY2021 list, #81 in FY2022, #60 in FY2023 and not on the FY2025 list; up 2 since FY2023.
59	HP Enterprise Services LLC 4 awardees, including Dhpc Technologies, Inc., QWK Integrated Solutions, LLC and Peraton Inc. Top agencies Army (Department of the Army) DTRA (Defense Threat Reduction Agency)	$26,208,337	0.2%	Rank history: #61 in FY2021, #38 in FY2022, #38 in FY2023 and not on the FY2025 list; down 21 since FY2023.
60	Strategic Analysis, Inc. Top agencies OSD (Office of the Secretary of Defense) DOT (Department of Transportation)	$23,836,586	0.2%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023 and #50 in FY2025; up 22 since FY2023.
61	Quantech Services Inc. Top agencies USAF (Department of the Air Force)	$23,367,507	0.2%	Rank history: #94 in FY2021, #75 in FY2022, #64 in FY2023 and #46 in FY2025; up 3 since FY2023.
62	Anavation, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$22,892,917	0.2%	Rank history: #97 in FY2021, not on the FY2022 list, #63 in FY2023 and #62 in FY2025; up 1 since FY2023.
63	Science & Technology Corporation Top agencies NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce)	$19,550,944	0.2%	Rank history: not on the FY2021 list, #82 in FY2022, #72 in FY2023 and #61 in FY2025; up 9 since FY2023.
64	Serco Inc 2 awardees, including Whitney Bradley & Brown, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$18,960,667	0.2%	Rank history: not on the FY2021–FY2022 lists, #91 in FY2023 and #29 in FY2025; up 27 since FY2023.
65	Jacobs Government Services Company 3 awardees, including Amentum Technology, Inc. and The Keyw Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$18,886,110	0.2%	Rank history: not on the FY2021–FY2023 lists and #98 in FY2025; new.
66	Astrix Technology LLC Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$18,076,400	0.2%	Rank history: not on the FY2021–FY2023 lists and #54 in FY2025; new.
67	Global Science & Technology, LLC Top agencies Commerce (Department of Commerce)	$17,471,175	0.2%	Rank history: not on the FY2021 list, #69 in FY2022, #57 in FY2023 and #66 in FY2025; down 10 since FY2023.
68	Caci Technologies LLC 2 awardees, including Caci, Inc. - Federal Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$16,352,164	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
69	Gemini Technical Solutions JV LLC Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$16,237,730	0.2%	Rank history: #80 in FY2021, #61 in FY2022, #47 in FY2023 and not on the FY2025 list; down 22 since FY2023.
70	Peraton Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$15,957,331	0.1%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2025; new.
71	IAP Worldwide Services, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$14,942,580	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
72	Bluehalo, LLC Top agencies USAF (Department of the Air Force)	$14,913,573	0.1%	Rank history: #74 in FY2021, #65 in FY2022, #65 in FY2023 and not on the FY2025 list; down 7 since FY2023.
73	Gauss Management Research and Engineering Inc. Top agencies USAF (Department of the Air Force)	$14,736,006	0.1%	Rank history: not on the FY2021 list, #87 in FY2022, #70 in FY2023 and #85 in FY2025; down 3 since FY2023.
74	Earth Resources Technology, LLC Top agencies Commerce (Department of Commerce)	$14,348,734	0.1%	Rank history: not on the FY2021 list, #92 in FY2022, #81 in FY2023 and #59 in FY2025; up 7 since FY2023.
75	The Survice Engineering Company LLC Top agencies Army (Department of the Army) DFAS (Defense Finance and Accounting Service) USAF (Department of the Air Force)	$14,316,635	0.1%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2023 and #64 in FY2025; up 22 since FY2023.
76	Intrepid Solutions and Services LLC Top agencies Army (Department of the Army)	$14,139,240	0.1%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2023 and not on the FY2025 list; up 1 since FY2023.
77	Teamstaff Inc. Through Social & Scientific Systems, Inc. Top agencies HHS (Department of Health and Human Services)	$13,972,964	0.1%	Rank history: not on the FY2021 list, #90 in FY2022, #76 in FY2023 and #57 in FY2025; down 1 since FY2023.
78	Zin Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$13,881,244	0.1%	Rank history: not on the FY2021 list, #74 in FY2022, #84 in FY2023 and #78 in FY2025; up 6 since FY2023.
79	Thompson Gray, Inc. Top agencies Army (Department of the Army)	$13,742,049	0.1%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2025; up 65 since FY2023.
80	Universities Space Research Association Top agencies NASA (National Aeronautics and Space Administration)	$13,174,596	0.1%	Rank history: #86 in FY2021, #67 in FY2022, not on the FY2023 list and not on the FY2025 list; up 105 since FY2023.
81	Dhpc Technologies, Inc. Top agencies Army (Department of the Army)	$13,051,126	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Avion Solutions, Inc. Top agencies Army (Department of the Army)	$12,536,389	0.1%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2025; new.
83	Excet, LLC Top agencies Army (Department of the Army)	$11,594,754	0.1%	Rank history: #88 in FY2021, not on the FY2022 list, #93 in FY2023 and #51 in FY2025; up 10 since FY2023.
84	Aegis Aerospace Inc. Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$11,437,199	0.1%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2023 and #71 in FY2025; up 6 since FY2023.
85	Envisioneering Inc. Top agencies Navy (Department of the Navy)	$10,618,226	0.1%	Rank history: not on the FY2021–FY2023 lists and #82 in FY2025; new.
86	Premier Technology, Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$10,606,309	0.1%	Rank history: not on the FY2021–FY2023 lists and #65 in FY2025; up 19 since FY2023.
87	The Regents of the University of Colorado Top agencies NASA (National Aeronautics and Space Administration)	$10,500,541	0.1%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2025; up 17 since FY2023.
88	Whitney Bradley & Brown, Inc. Through Serco Inc. Top agencies Army (Department of the Army)	$10,465,953	0.1%	Rank history: #81 in FY2021, not on the FY2022 list, #67 in FY2023 and not on the FY2025 list; down 21 since FY2023.
89	SNA International LLC Top agencies DHA (Defense Health Agency)	$10,362,193	0.1%	Rank history: #73 in FY2021, #85 in FY2022, #73 in FY2023 and not on the FY2025 list; down 16 since FY2023.
90	University of Southern California Top agencies Army (Department of the Army) Navy (Department of the Navy)	$10,334,568	0.1%	Rank history: #85 in FY2021, #93 in FY2022, #61 in FY2023 and not on the FY2025 list; down 29 since FY2023.
91	Semanticbits LLC Through ICF Incorporated, L.L.C. Top agencies HHS (Department of Health and Human Services)	$9,947,677	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Systems Products and Solutions, Inc. Top agencies Army (Department of the Army)	$9,749,048	0.1%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2023 and #60 in FY2025; down 5 since FY2023.
93	Riverside Research Institute 2 awardees, including Applied Research Solutions, Inc. Top agencies USAF (Department of the Air Force)	$9,522,906	0.1%	Rank history: #18 in FY2021, #17 in FY2022, #15 in FY2023 and not on the FY2025 list; down 78 since FY2023.
94	Analytical Mechanics Associates Inc. Top agencies NASA (National Aeronautics and Space Administration)	$9,298,909	0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and not on the FY2025 list; down 2 since FY2023.
95	Marton Technologies Inc Top agencies Army (Department of the Army)	$8,999,956	0.1%	Rank history: not on the FY2021–FY2023 lists and #83 in FY2025; up 148 since FY2023.
96	Tec-Masters, Inc. Top agencies Army (Department of the Army)	$8,712,755	0.1%	Rank history: not on the FY2021–FY2023 lists and #75 in FY2025; up 13 since FY2023.
97	Spectrum Software Technology Inc Top agencies DOT (Department of Transportation)	$8,671,344	0.1%	Rank history: not on the FY2021–FY2023 lists and #74 in FY2025; up 33 since FY2023.
98	Abacus Technology Corporation Top agencies USAF (Department of the Air Force)	$8,141,805	0.1%	Rank history: not on the FY2021–FY2023 lists and #53 in FY2025; new.
99	Ideal Innovations Incorporated Top agencies Army (Department of the Army)	$8,061,370	0.1%	Rank history: not on the FY2021–FY2023 lists and #86 in FY2025; new.
100	IAP Global Services LLC Through IAP Worldwide Services, Inc. Top agencies Army (Department of the Army)	$7,788,102	0.1%	Rank history: #57 in FY2021, #73 in FY2022, #66 in FY2023 and not on the FY2025 list; down 34 since FY2023.

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 $10.7 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. 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.
• Fiscal year 2024 ran Oct 1, 2023 – Sep 30, 2024. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2023. "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. The step from FY2023 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers