Top 100 Contractors in PSC AC33: National Defense R&D Services; Defense-Related Activities; Experimental Development, FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Textron Inc. Through Bell Textron Inc. Top agencies Army (Department of the Army)	$597,800,120	26.7%	Rank history: not on the FY2021–FY2022 lists, #1 in FY2024 and #1 in FY2025; new.
2	General Dynamics Corporation 4 awardees, including General Dynamics Mission Systems, Inc., General Dynamics Information Technology, Inc. and Applied Physical Sciences Corp Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$157,805,450	7.0%	Rank history: #17 in FY2021, #2 in FY2022, #2 in FY2024 and #2 in FY2025; unchanged since FY2022.
3	Analytic Services Inc. 2 awardees, including Advanced Technology International and Innovative Defense Technologies, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$149,417,890	6.7%	Rank history: #11 in FY2021, #6 in FY2022, #8 in FY2024 and not on the FY2025 list; up 3 since FY2022.
4	The Boeing Company 3 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$63,522,592	2.8%	Rank history: #2 in FY2021, #3 in FY2022, #15 in FY2024 and #15 in FY2025; down 1 since FY2022.
5	Northrop Grumman Corporation 5 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$61,702,640	2.8%	Rank history: #21 in FY2021, #8 in FY2022, #16 in FY2024 and #11 in FY2025; up 3 since FY2022.
6	Prescient Edge Corporation Top agencies Navy (Department of the Navy)	$59,208,379	2.6%	Rank history: not on the FY2021 list, #1 in FY2022, #6 in FY2024 and #46 in FY2025; down 5 since FY2022.
7	ICR Inc Top agencies USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency)	$59,177,138	2.6%	Rank history: #28 in FY2021, #4 in FY2022, #19 in FY2024 and #18 in FY2025; down 3 since FY2022.
8	Applied Research Associates, Inc. Top agencies DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force)	$56,823,479	2.5%	Rank history: #8 in FY2021, #7 in FY2022, #11 in FY2024 and #13 in FY2025; down 1 since FY2022.
9	Lockheed Martin Corporation 6 awardees, including Lockheed Martin Aculight Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$52,686,327	2.3%	Rank history: #7 in FY2021, #26 in FY2022, not on the FY2024 list and #12 in FY2025; up 17 since FY2022.
10	Jetzero, Inc. Top agencies USAF (Department of the Air Force)	$47,222,999	2.1%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2024 and #6 in FY2025; new.
11	Leidos Holdings, Inc. 2 awardees, including Leidos, Inc. Top agencies DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$45,336,202	2.0%	Rank history: #15 in FY2021, #17 in FY2022, #10 in FY2024 and #10 in FY2025; up 6 since FY2022.
12	Aaski Technology Inc. Through Mag DS Corp Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$37,337,198	1.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
13	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$24,804,614	1.1%	Rank history: #79 in FY2021, #16 in FY2022, #43 in FY2024 and #30 in FY2025; up 3 since FY2022.
14	Two Six Parent Inc. Through IST Research, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$24,095,820	1.1%	Rank history: #72 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
15	Two Six Labs Holdings, Inc. Through Two Six Labs, LLC Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$23,518,250	1.0%	Rank history: #18 in FY2021, #23 in FY2022 and not on the FY2024–FY2025 lists; up 8 since FY2022.
16	Veritas Capital Fund Management, L.L.C. Through Analex Corporation Top agencies Navy (Department of the Navy)	$22,067,594	1.0%	Rank history: not on the FY2021 list, #21 in FY2022, #89 in FY2024 and not on the FY2025 list; up 5 since FY2022.
17	C3.Ai, Inc. Top agencies USAF (Department of the Air Force)	$21,631,678	1.0%	Rank history: #4 in FY2021, #22 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
18	Seacorp, LLC Top agencies Navy (Department of the Navy)	$18,724,376	0.8%	Rank history: #57 in FY2021, #29 in FY2022, #12 in FY2024 and #9 in FY2025; up 11 since FY2022.
19	Blue Force Technologies, LLC Top agencies USAF (Department of the Air Force)	$17,762,367	0.8%	Rank history: not on the FY2021 list, #18 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
20	Tactical Engineering & Analysis, Inc. Top agencies Navy (Department of the Navy)	$17,349,910	0.8%	Rank history: #26 in FY2021, #15 in FY2022, #23 in FY2024 and #20 in FY2025; down 5 since FY2022.
21	Intuitive Research and Technology Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$17,147,298	0.8%	Rank history: not on the FY2021 list, #33 in FY2022, #18 in FY2024 and not on the FY2025 list; up 12 since FY2022.
22	Westinghouse Electric Company LLC Through Westinghouse Government Services LLC Top agencies USAF (Department of the Air Force)	$16,969,992	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
23	Macaulay-Brown Inc. Through Enlighten It Consulting LLC Top agencies USAF (Department of the Air Force)	$16,456,508	0.7%	Rank history: #13 in FY2021, #12 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
24	Sri International Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$16,343,858	0.7%	Rank history: #16 in FY2021, #32 in FY2022 and not on the FY2024–FY2025 lists; up 8 since FY2022.
25	RTX Corporation 8 awardees, including Raytheon Company and Rockwell Collins, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$16,188,679	0.7%	Rank history: #78 in FY2021, #43 in FY2022, #21 in FY2024 and #14 in FY2025; up 18 since FY2022.
26	HP Enterprise Services LLC 3 awardees, including Peraton Technology Services Inc. and Peraton Inc. Top agencies USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy)	$15,703,748	0.7%	Rank history: #9 in FY2021, #5 in FY2022, #32 in FY2024 and not on the FY2025 list; down 21 since FY2022.
27	Defense Unicorns, Inc. Top agencies Navy (Department of the Navy)	$14,234,024	0.6%	Rank history: not on the FY2021 list, #31 in FY2022, #36 in FY2024 and #31 in FY2025; up 4 since FY2022.
28	Radiance Technologies Inc. Top agencies Army (Department of the Army)	$13,483,273	0.6%	Rank history: not on the FY2021 list, #20 in FY2022, #41 in FY2024 and #100 in FY2025; down 8 since FY2022.
29	Niron Magnetics Inc. Top agencies DLA (Defense Logistics Agency)	$12,489,500	0.6%	Rank history: #48 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
30	Systems & Technology Research LLC Top agencies DLA (Defense Logistics Agency)	$12,288,703	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
31	The Pennsylvania State University Top agencies Navy (Department of the Navy) DTRA (Defense Threat Reduction Agency)	$11,413,320	0.5%	Rank history: not on the FY2021 list, #57 in FY2022, #31 in FY2024 and #52 in FY2025; up 26 since FY2022.
32	Sierra Nevada Company, LLC Top agencies Navy (Department of the Navy)	$11,102,142	0.5%	Rank history: not on the FY2021 list, #67 in FY2022 and not on the FY2024–FY2025 lists; up 35 since FY2022.
33	L3Harris Technologies, Inc. 5 awardees, including CAE USA Inc. and L3 Technologies, Inc. Top agencies USAF (Department of the Air Force)	$10,720,341	0.5%	Rank history: #12 in FY2021, not on the FY2022 list, #40 in FY2024 and #26 in FY2025; up 102 since FY2022.
34	Purvis Systems Inc. Top agencies Navy (Department of the Navy)	$10,285,129	0.5%	Rank history: not on the FY2021 list, #50 in FY2022, #25 in FY2024 and #33 in FY2025; up 16 since FY2022.
35	Space Exploration Technologies Corp. Top agencies USAF (Department of the Air Force)	$9,654,120	0.4%	Rank history: #1 in FY2021, #9 in FY2022, #80 in FY2024 and #22 in FY2025; down 26 since FY2022.
36	Intuitive Machines, LLC Top agencies USAF (Department of the Air Force)	$9,490,214	0.4%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #61 in FY2025; new.
37	Battelle Memorial Institute Top agencies USAF (Department of the Air Force)	$9,476,718	0.4%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2024 and #98 in FY2025; new.
38	BAE Systems PLC 3 awardees, including BAE Systems Information and Electronic Systems Integration Inc. and BAE Systems Technology Solutions & Services Inc. Top agencies USAF (Department of the Air Force) NSA (Department of Defense National Security Agency) Navy (Department of the Navy)	$9,215,264	0.4%	Rank history: not on the FY2021 list, #61 in FY2022 and not on the FY2024–FY2025 lists; up 23 since FY2022.
39	Research and Development Solutions, Incorporated Top agencies Navy (Department of the Navy)	$8,824,844	0.4%	Rank history: not on the FY2021 list, #27 in FY2022, #52 in FY2024 and #56 in FY2025; down 12 since FY2022.
40	Southwest Research Institute Top agencies DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy) Army (Department of the Army)	$8,613,633	0.4%	Rank history: #54 in FY2021, #51 in FY2022, #26 in FY2024 and #36 in FY2025; up 11 since FY2022.
41	Kbr, Inc. 2 awardees, including KBR Wyle Services, LLC Top agencies USAF (Department of the Air Force)	$8,332,313	0.4%	Rank history: not on the FY2021 list, #13 in FY2022 and not on the FY2024–FY2025 lists; down 28 since FY2022.
42	ENA Respiratory PTY Ltd Top agencies Army (Department of the Army)	$8,180,000	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
43	Amsted Graphite Materials LLC Top agencies DLA (Defense Logistics Agency)	$8,068,892	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
44	Riverside Research Institute Top agencies USAF (Department of the Air Force)	$8,005,281	0.4%	Rank history: not on the FY2021–FY2022 lists, #57 in FY2024 and not on the FY2025 list; new.
45	Verus Research, LLC Top agencies Navy (Department of the Navy) DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force)	$7,884,803	0.4%	Rank history: not on the FY2021–FY2022 lists, #50 in FY2024 and not on the FY2025 list; up 79 since FY2022.
46	Bevilacqua Research Corporation Top agencies Navy (Department of the Navy)	$7,783,287	0.3%	Rank history: not on the FY2021 list, #39 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
47	American Lightweight Materials Manufacturing Innovation Institute Top agencies Army (Department of the Army)	$7,703,000	0.3%	Rank history: not on the FY2021 list, #53 in FY2022, not on the FY2024 list and #63 in FY2025; up 6 since FY2022.
48	Envisioneering, Inc. Top agencies Navy (Department of the Navy)	$7,520,776	0.3%	Rank history: #20 in FY2021, #30 in FY2022 and not on the FY2024–FY2025 lists; down 18 since FY2022.
49	Subsystem Technologies Inc. Through KMS Solutions, LLC Top agencies Navy (Department of the Navy)	$7,204,545	0.3%	Rank history: not on the FY2021 list, #36 in FY2022 and not on the FY2024–FY2025 lists; down 13 since FY2022.
50	The Consultants Consortium LLC Through Vertex Solutions, LLC Top agencies USAF (Department of the Air Force)	$6,844,725	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
51	Ball Corp Through BAE Systems Space & Mission Systems Inc. Top agencies USAF (Department of the Air Force)	$6,809,430	0.3%	Rank history: #33 in FY2021, #42 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
52	Arizona State University Top agencies DLA (Defense Logistics Agency)	$6,564,290	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
53	Metron Incorporated Top agencies Navy (Department of the Navy)	$6,523,457	0.3%	Rank history: not on the FY2021–FY2022 lists, #42 in FY2024 and #53 in FY2025; new.
54	Tele Consultants Inc. Top agencies Navy (Department of the Navy)	$6,523,188	0.3%	Rank history: not on the FY2021 list, #60 in FY2022, #71 in FY2024 and #76 in FY2025; up 6 since FY2022.
55	Science Applications International Corporation Top agencies Navy (Department of the Navy)	$6,450,589	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 54 since FY2022.
56	University of Texas System Through University of Texas At Austin Top agencies Navy (Department of the Navy)	$6,208,550	0.3%	Rank history: not on the FY2021 list, #49 in FY2022, #48 in FY2024 and not on the FY2025 list; down 7 since FY2022.
57	Colsa Corp Top agencies Navy (Department of the Navy)	$5,936,019	0.3%	Rank history: #22 in FY2021, #37 in FY2022, #46 in FY2024 and #57 in FY2025; down 20 since FY2022.
58	Deval Life Cycle Support LLC 2 awardees, including Parts Life Inc. Top agencies DLA (Defense Logistics Agency)	$5,784,336	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
59	Coherent Technical Services, Inc. Top agencies Navy (Department of the Navy)	$5,770,638	0.3%	Rank history: #30 in FY2021, #44 in FY2022, #73 in FY2024 and not on the FY2025 list; down 15 since FY2022.
60	UI Labs Top agencies DLA (Defense Logistics Agency)	$5,648,724	0.3%	Rank history: #19 in FY2021, #56 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
61	Premier Technology, Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$5,638,239	0.3%	Rank history: #29 in FY2021, #55 in FY2022, #54 in FY2024 and #48 in FY2025; down 6 since FY2022.
62	International Aids Vaccine Initiative Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$5,287,820	0.2%	Rank history: #6 in FY2021, #38 in FY2022 and not on the FY2024–FY2025 lists; down 24 since FY2022.
63	1ST Edge LLC Top agencies Army (Department of the Army)	$5,111,967	0.2%	Rank history: #23 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
64	Joby Aviation Inc. Through Joby Aero Inc. Top agencies DFAS (Defense Finance and Accounting Service)	$5,000,000	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
65	White Cane, Inc. Top agencies NSA (Department of Defense National Security Agency)	$4,985,160	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
66	Advanced Systems Supportability Engineering Technologies and Tools, Inc. Top agencies USSOCOM (United States Special Operations Command)	$4,813,269	0.2%	Rank history: #43 in FY2021, #72 in FY2022, #65 in FY2024 and #89 in FY2025; up 6 since FY2022.
67	Graphite One (Alaska) Inc. Top agencies DLA (Defense Logistics Agency)	$4,726,625	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
68	Mentis Sciences Inc Top agencies DLA (Defense Logistics Agency)	$4,676,606	0.2%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2024 and not on the FY2025 list; new.
69	CNH Industrial N.V. Through Aerostar International, LLC Top agencies Navy (Department of the Navy)	$4,664,686	0.2%	Rank history: not on the FY2021 list, #89 in FY2022 and not on the FY2024–FY2025 lists; up 20 since FY2022.
70	Vana Solutions LLC Top agencies USAF (Department of the Air Force)	$4,595,604	0.2%	Rank history: not on the FY2021 list, #24 in FY2022 and not on the FY2024–FY2025 lists; down 46 since FY2022.
71	LMI Consulting, LLC Top agencies DLA (Defense Logistics Agency)	$4,443,030	0.2%	Rank history: #66 in FY2021, #85 in FY2022, #70 in FY2024 and #70 in FY2025; up 14 since FY2022.
72	Lumen Bioscience, Inc. Top agencies Army (Department of the Army)	$4,430,498	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
73	State of California Controllers Office 2 awardees, including University of California, San Diego and San Diego State University Foundation Top agencies DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy)	$4,347,837	0.2%	Rank history: #63 in FY2021, #73 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
74	6K Inc. Top agencies DLA (Defense Logistics Agency)	$4,337,500	0.2%	Rank history: #24 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 96 since FY2022.
75	Huntington Ingalls Industries, Inc. Through Enlighten It Consulting LLC Top agencies USAF (Department of the Air Force)	$4,241,701	0.2%	Rank history: not on the FY2021 list, #66 in FY2022, #24 in FY2024 and #44 in FY2025; down 9 since FY2022.
76	DCS Corporation Top agencies Navy (Department of the Navy) Army (Department of the Army)	$4,035,149	0.2%	Rank history: #35 in FY2021, #65 in FY2022, #4 in FY2024 and #5 in FY2025; down 11 since FY2022.
77	Akima Systems Engineering LLC Top agencies Navy (Department of the Navy)	$3,963,412	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
78	Advanced Technology and Research Corporation Top agencies Navy (Department of the Navy)	$3,774,858	0.2%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #92 in FY2025; up 60 since FY2022.
79	Georgia TECH Research Corp Through Georgia TECH Applied Research Corp Top agencies DARPA (Defense Advanced Research Projects Agency)	$3,756,756	0.2%	Rank history: #39 in FY2021, #40 in FY2022 and not on the FY2024–FY2025 lists; down 39 since FY2022.
80	Xage Security Gov, LLC Top agencies USAF (Department of the Air Force)	$3,650,000	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
81	Nana Regional Corporation Inc Through Lynxnet, LLC Top agencies Navy (Department of the Navy)	$3,534,468	0.2%	Rank history: not on the FY2021 list, #46 in FY2022 and not on the FY2024–FY2025 lists; down 35 since FY2022.
82	Authentise Inc. Top agencies OSD (Office of the Secretary of Defense)	$3,358,876	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
83	Jacobs Engineering Group Inc. Through The Keyw Corporation Top agencies Navy (Department of the Navy)	$3,341,028	0.1%	Rank history: not on the FY2021 list, #47 in FY2022 and not on the FY2024–FY2025 lists; down 36 since FY2022.
84	Novetta Solutions, LLC Through Accenture Federal Services LLC Top agencies DTRA (Defense Threat Reduction Agency)	$3,337,633	0.1%	Rank history: #44 in FY2021, #64 in FY2022 and not on the FY2024–FY2025 lists; down 20 since FY2022.
85	Systems Resource Management, Inc. Top agencies Navy (Department of the Navy)	$3,337,254	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
86	Kaney Aerospace Inc. Top agencies DLA (Defense Logistics Agency)	$3,314,926	0.1%	Rank history: not on the FY2021 list, #69 in FY2022 and not on the FY2024–FY2025 lists; down 17 since FY2022.
87	Access To Advanced Health Institute Top agencies Army (Department of the Army)	$3,049,600	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
88	Fuse Integration Inc. Top agencies Navy (Department of the Navy)	$3,017,000	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
89	Karambitai Inc. Top agencies DLA (Defense Logistics Agency)	$3,010,400	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
90	Starfish Space Inc. Top agencies WHS (DOD Washington Headquarters Service)	$3,000,000	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
91	Accenture Inc. Through Accenture Federal Services LLC Top agencies DLA (Defense Logistics Agency)	$2,906,794	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	Indesign LLC Top agencies DTRA (Defense Threat Reduction Agency) Army (Department of the Army)	$2,889,408	0.1%	Rank history: #51 in FY2021, #63 in FY2022 and not on the FY2024–FY2025 lists; down 29 since FY2022.
93	Karem Aircraft, Inc. Top agencies OSD (Office of the Secretary of Defense)	$2,877,837	0.1%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2024 and not on the FY2025 list; new.
94	Nuview, Inc. Top agencies OSD (Office of the Secretary of Defense)	$2,750,000	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
95	Turnaround Factor Inc. Top agencies DLA (Defense Logistics Agency)	$2,523,230	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 151 since FY2022.
96	Scientific Research Corporation Top agencies Navy (Department of the Navy)	$2,521,148	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 41 since FY2022.
97	Mantech International Corporation Through Mantech Advanced Systems International, Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$2,500,000	0.1%	Rank history: not on the FY2021 list, #48 in FY2022 and not on the FY2024–FY2025 lists; down 49 since FY2022.
98	Parsons Corporation Through Polaris Alpha Advanced Systems Inc. Top agencies Army (Department of the Army)	$2,454,069	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
99	Ocella, Inc. Top agencies OSD (Office of the Secretary of Defense)	$2,399,845	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
100	Sigma Defense Systems LLC Through Solute Top agencies Navy (Department of the Navy)	$2,397,000	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 76 since FY2022.

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 $2.24 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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