Top 51 Contractors in PSC AC21: National Defense R&D Services; Atomic Energy Defense Activities; Basic Research, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Science Applications International Corporation 2 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$93,112,400	23.2%	Rank history: #2 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
2	Leidos Holdings, Inc. Through Dynetics, Inc. Top agencies Army (Department of the Army)	$68,816,835	17.2%	Rank history: #4 in FY2022, #4 in FY2023 and not on the FY2024–FY2025 lists; up 19 since FY2020.
3	Radiance Technologies Inc. Top agencies Army (Department of the Army)	$25,043,591	6.3%	Rank history: #5 in FY2022, #12 in FY2023, #23 in FY2024 and not on the FY2025 list; up 16 since FY2020.
4	Cybex, LLC Top agencies Army (Department of the Army)	$22,684,672	5.7%	Rank history: #11 in FY2022, #18 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
5	Kratos S2, Inc. Top agencies USAF (Department of the Air Force)	$19,617,891	4.9%	Rank history: #7 in FY2022, not on the FY2023 list, #3 in FY2024 and #2 in FY2025; up 7 since FY2020.
6	Whitney Bradley & Brown, Inc. Through Serco Inc. Top agencies Army (Department of the Army)	$15,724,697	3.9%	Rank history: #12 in FY2022, #9 in FY2023, #26 in FY2024 and not on the FY2025 list; up 10 since FY2020.
7	Jacobs Engineering Group Inc. Through Amentum Technology, Inc. Top agencies USAF (Department of the Air Force)	$15,696,819	3.9%	Rank history: #8 in FY2022, #5 in FY2023, #18 in FY2024 and not on the FY2025 list; up 4 since FY2020.
8	Teledyne Technologies Incorporated Through Teledyne Brown Engineering, Inc. Top agencies Army (Department of the Army) MDA (DOD Missile Defense Agency)	$14,430,434	3.6%	Rank history: #6 in FY2022, #3 in FY2023, #4 in FY2024 and #8 in FY2025; down 6 since FY2020.
9	Bluestaq LLC Top agencies USAF (Department of the Air Force)	$11,633,229	2.9%	Rank history: #3 in FY2022, #2 in FY2023, #1 in FY2024 and #1 in FY2025; up 1 since FY2020.
10	The Boeing Company Through Millennium Space Systems, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$10,855,938	2.7%	Rank history: #10 in FY2022, #24 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2020.
11	L3Harris Technologies, Inc. Through L3Harris Technologies Integrated Systems L.P. Top agencies MDA (DOD Missile Defense Agency)	$8,994,969	2.2%	Rank history: not on the FY2022 list, #19 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2020.
12	Tecolote Research, Inc. Top agencies USAF (Department of the Air Force)	$8,944,297	2.2%	Rank history: #9 in FY2022, #8 in FY2023, #7 in FY2024 and #7 in FY2025; up 5 since FY2020.
13	Bluehalo LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$6,811,367	1.7%	Rank history: #15 in FY2022, #20 in FY2023, #27 in FY2024 and not on the FY2025 list; up 10 since FY2020.
14	Serco North America (Holdings) Inc Through Serco Inc. Top agencies Army (Department of the Army)	$6,577,997	1.6%	Rank history: #19 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
15	Millennium Space Systems, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$3,850,000	1.0%	Rank history: not on the FY2022–FY2025 lists; up 9 since FY2020.
16	Sentar, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$2,717,385	0.7%	Rank history: #16 in FY2022, #16 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
17	Milanowski & Associates, Inc. Top agencies USAF (Department of the Air Force)	$2,563,107	0.6%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
18	Gryphon Technologies, Inc. Through Gryphon Aerospace, LLC Top agencies USAF (Department of the Air Force)	$2,560,221	0.6%	Rank history: not on the FY2022 list, #10 in FY2023, #24 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
19	Alakai Defense Systems, Inc. Top agencies Army (Department of the Army)	$2,500,000	0.6%	Rank history: #14 in FY2022, #11 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
20	Perspecta Inc. Through QWK Integrated Solutions, LLC Top agencies Army (Department of the Army)	$2,061,511	0.5%	Rank history: #43 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
21	The Regents of the University of Colorado Top agencies USAF (Department of the Air Force)	$2,050,941	0.5%	Rank history: #22 in FY2022, #27 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
22	Busek Co., Inc. Top agencies USAF (Department of the Air Force)	$1,609,594	0.4%	Rank history: not on the FY2022–FY2023 lists, #32 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
23	Dexai Robotics Inc. Top agencies DLA (Defense Logistics Agency)	$1,588,637	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
24	Honeywell International Inc. 2 awardees Top agencies USAF (Department of the Air Force)	$1,134,941	0.3%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
25	Sigmatech Inc. Top agencies USAF (Department of the Air Force)	$974,057	0.2%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
26	HP Enterprise Services LLC Through QWK Integrated Solutions, LLC Top agencies Army (Department of the Army)	$972,635	0.2%	Rank history: #13 in FY2022, #14 in FY2023, #12 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
27	Dynetics, Inc. Top agencies Army (Department of the Army)	$820,000	0.2%	Rank history: not on the FY2022–FY2025 lists; down 22 since FY2020.
28	Next Offset Solutions, Inc. Top agencies USAF (Department of the Air Force)	$761,820	0.2%	Rank history: #26 in FY2022, #22 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
29	Altius Space Machines, Inc. Top agencies USAF (Department of the Air Force)	$750,000	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
30	Spectral Sciences, Inc. Top agencies USAF (Department of the Air Force)	$749,998	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
31	Vibrant Corporation Top agencies USAF (Department of the Air Force)	$749,403	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
32	Spaceworks Enterprises Inc. Top agencies USAF (Department of the Air Force)	$689,017	0.2%	Rank history: #42 in FY2022 and not on the FY2023–FY2025 lists; up 1 since FY2020.
33	Ingenia Services Inc. Top agencies Army (Department of the Army)	$500,010	0.1%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
34	Systems Planning and Analysis, Inc. Top agencies USAF (Department of the Air Force)	$307,344	0.1%	Rank history: #25 in FY2022, #25 in FY2023, #22 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
35	Intelligent Fusion Technology, Inc. Top agencies USAF (Department of the Air Force)	$300,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
36	Carbon Solutions Inc. Top agencies USAF (Department of the Air Force)	$150,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
37	Sensing Strategies, Inc. Top agencies USAF (Department of the Air Force)	$150,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
38	Nokomis, Inc. Top agencies USAF (Department of the Air Force)	$150,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
39	Barnett Engineering & Signaling Laboratories, Llc. Top agencies USAF (Department of the Air Force)	$150,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
40	Boulder Environmental Sciences and Technology, LLC Top agencies USAF (Department of the Air Force)	$150,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
41	Nanotek Instruments Inc. Top agencies USAF (Department of the Air Force)	$149,997	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
42	Echo Ridge LLC Top agencies USAF (Department of the Air Force)	$149,996	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
43	Kuprion, Inc. Top agencies USAF (Department of the Air Force)	$149,977	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
44	Integrated Deposition Solutions Inc. Top agencies USAF (Department of the Air Force)	$149,942	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
45	Earthcast Technologies LP Top agencies USAF (Department of the Air Force)	$149,771	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
46	Angstrom Designs Inc. Top agencies USAF (Department of the Air Force)	$149,701	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
47	Rincon Research Corporation Top agencies USAF (Department of the Air Force)	$116,402	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
48	Indiana Integrated Circuits LLC Top agencies USAF (Department of the Air Force)	$99,995	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 17 since FY2020.
49	Binergy Scientific, Inc. Top agencies Navy (Department of the Navy)	$97,180	<0.1%	Rank history: #37 in FY2022 and not on the FY2023–FY2025 lists; down 22 since FY2020.
50	Innoveering LLC Top agencies Navy (Department of the Navy)	$74,797	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
51	Georgia TECH Research Corp 2 awardees Top agencies USAF (Department of the Air Force)	$60,291	<0.1%	Rank history: #45 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.

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 $401 million 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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.

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