Top 100 Contractors in PSC AJ: General Science and Technology R&D Services, FY2025

Name: Top 100 Contractors in PSC AJ: General Science and Technology R&D Services, FY2025
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 25% of FY2025 PSC AJ contract dollars

Contract obligations: $5,406,568,881 Net of deobligations, by contracts coded PSC AJ or a code under it
Contractors: 1,730 Parent companies with an obligation
Largest contractor: Battelle Savannah River Alliance, LLC $302 million, 5.5% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Battelle Savannah River Alliance, LLC Top agencies DOE (Department of Energy)	$302,244,892	5.5%	Rank history: #2 in FY2021, not on the FY2022–FY2023 lists and #2 in FY2024; up 1 since FY2024.
2	Georgia TECH Applied Research Corp Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$255,571,303	4.6%	Rank history: #96 in FY2021, not on the FY2022–FY2023 lists and #3 in FY2024; up 1 since FY2024.
3	Advanced Technology International Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$133,451,794	2.4%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2024; up 5 since FY2024.
4	The Mitre Corporation Top agencies Commerce (Department of Commerce) DHS (Department of Homeland Security) Navy (Department of the Navy)	$126,010,109	2.3%	Rank history: #5 in FY2021, #5 in FY2022, #4 in FY2023 and #4 in FY2024; unchanged since FY2024.
5	Assurance Technology Corp Top agencies Navy (Department of the Navy)	$113,929,970	2.1%	Rank history: #6 in FY2021, #6 in FY2022, #7 in FY2023 and #9 in FY2024; up 4 since FY2024.
6	Science Systems and Applications, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$104,801,076	1.9%	Rank history: #4 in FY2021, #4 in FY2022, #6 in FY2023 and #7 in FY2024; up 1 since FY2024.
7	American Systems Corporation Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$102,460,566	1.8%	Rank history: #38 in FY2021, #9 in FY2022, #9 in FY2023 and #6 in FY2024; down 1 since FY2024.
8	Leidos Holdings, Inc. 6 awardees, including Leidos, Inc. and Dynetics, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$90,823,744	1.6%	Rank history: #16 in FY2021, #8 in FY2022, #5 in FY2023 and #14 in FY2024; up 6 since FY2024.
9	University of Maryland, College Park Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$83,607,361	1.5%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2024; up 17 since FY2024.
10	Battelle Memorial Institute Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) Army (Department of the Army)	$69,782,242	1.3%	Rank history: #23 in FY2021, #2 in FY2022, #3 in FY2023 and #5 in FY2024; down 5 since FY2024.
11	National Security Technology Accelerator Inc. Top agencies WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$67,387,540	1.2%	Rank history: #3 in FY2021, #3 in FY2022, #1 in FY2023 and #1 in FY2024; down 10 since FY2024.
12	Diazyme Laboratories Inc. Through General Atomics Top agencies DOE (Department of Energy) Navy (Department of the Navy) USAF (Department of the Air Force)	$64,806,464	1.2%	Rank history: not on the FY2021–FY2023 lists and #73 in FY2024; up 61 since FY2024.
13	Southwest Research Institute Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) NRC (Nuclear Regulatory Commission)	$62,195,469	1.1%	Rank history: #13 in FY2021, #11 in FY2022, #13 in FY2023 and #12 in FY2024; down 1 since FY2024.
14	The Regents of the University of Colorado Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$62,188,767	1.1%	Rank history: #21 in FY2021, #18 in FY2022, #16 in FY2023 and #19 in FY2024; up 5 since FY2024.
15	Columbus Technologies and Services, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$60,255,268	1.1%	Rank history: not on the FY2021–FY2024 lists; new.
16	Sierra Nevada Company, LLC 2 awardees, including Sierra Space Corp Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$56,562,961	1.0%	Rank history: not on the FY2021–FY2024 lists; new.
17	Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies NASA (National Aeronautics and Space Administration) DHS (Department of Homeland Security) Army (Department of the Army)	$55,152,077	1.0%	Rank history: not on the FY2021–FY2024 lists; new.
18	L3Harris Technologies, Inc. 8 awardees, including L3Harris Nexgen Communications LLC and L3Harris Linchpin Labs, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$53,354,426	1.0%	Rank history: not on the FY2021 list, #58 in FY2022, #48 in FY2023 and #22 in FY2024; up 4 since FY2024.
19	KBR Wyle Services LLC 3 awardees Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$51,483,064	0.9%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2024; up 22 since FY2024.
20	Bastion Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$46,987,136	0.8%	Rank history: #11 in FY2021, #16 in FY2022, #15 in FY2023 and #21 in FY2024; up 1 since FY2024.
21	Northrop Grumman Corporation 7 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$43,922,884	0.8%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and #90 in FY2024; up 69 since FY2024.
22	Parsons Corporation Through Parsons Government Services Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$41,108,528	0.7%	Rank history: #92 in FY2021, #28 in FY2022, #10 in FY2023 and #28 in FY2024; up 6 since FY2024.
23	Envision Innovative Solutions, Inc. Top agencies Army (Department of the Army)	$40,901,466	0.7%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2023 and #36 in FY2024; up 13 since FY2024.
24	Linquest Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$39,251,131	0.7%	Rank history: #10 in FY2021, #10 in FY2022, #8 in FY2023 and #15 in FY2024; down 9 since FY2024.
25	Modern Technology Solutions, Inc. Top agencies OSD (Office of the Secretary of Defense)	$38,318,348	0.7%	Rank history: #41 in FY2021, #45 in FY2022, #28 in FY2023 and #39 in FY2024; up 14 since FY2024.
26	University of Arizona Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) Navy (Department of the Navy)	$37,759,159	0.7%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2024; up 26 since FY2024.
27	Qinetiq Inc. Top agencies Army (Department of the Army)	$37,194,857	0.7%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2024; up 29 since FY2024.
28	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies Army (Department of the Army) Commerce (Department of Commerce)	$36,556,849	0.7%	Rank history: #28 in FY2021, #47 in FY2022, #51 in FY2023 and #61 in FY2024; up 33 since FY2024.
29	Avantus Federal LLC Top agencies OSD (Office of the Secretary of Defense)	$34,350,777	0.6%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2024; down 4 since FY2024.
30	Envisioneering Inc. Top agencies Navy (Department of the Navy)	$31,827,580	0.6%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2024; up 20 since FY2024.
31	DCS Corporation 2 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$31,510,287	0.6%	Rank history: #26 in FY2021, #26 in FY2022, #21 in FY2023 and #30 in FY2024; down 1 since FY2024.
32	MI Technical Solutions Inc Top agencies Navy (Department of the Navy)	$30,809,608	0.6%	Rank history: not on the FY2021–FY2024 lists; new.
33	QED Systems LLC Top agencies Army (Department of the Army)	$29,950,988	0.5%	Rank history: not on the FY2021–FY2024 lists; up 84 since FY2024.
34	The Regents of the University of California Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$29,393,252	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
35	The Charles Stark Draper Laboratory, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$29,121,032	0.5%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2023 and not on the FY2024 list; up 71 since FY2024.
36	OPR LLC Top agencies NASA (National Aeronautics and Space Administration)	$29,010,416	0.5%	Rank history: #22 in FY2021, #21 in FY2022, #24 in FY2023 and #23 in FY2024; down 13 since FY2024.
37	National Center for Defense Manufacturing and Machining Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense)	$28,316,691	0.5%	Rank history: not on the FY2021 list, #17 in FY2022, #12 in FY2023 and #13 in FY2024; down 24 since FY2024.
38	Innovative Defense Technologies LLC Top agencies Navy (Department of the Navy)	$27,745,007	0.5%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2024; up 29 since FY2024.
39	Microsoft Corporation Top agencies USAF (Department of the Air Force)	$26,443,546	0.5%	Rank history: not on the FY2021–FY2023 lists and #74 in FY2024; up 35 since FY2024.
40	California Institute of Technology Top agencies NASA (National Aeronautics and Space Administration)	$25,409,311	0.5%	Rank history: not on the FY2021 list, #96 in FY2022, not on the FY2023 list and #93 in FY2024; up 53 since FY2024.
41	Massachusetts Institute of Technology Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$24,841,515	0.4%	Rank history: #65 in FY2021, #42 in FY2022, #47 in FY2023 and #49 in FY2024; up 8 since FY2024.
42	Katalyst Space Technologies, LLC Top agencies NASA (National Aeronautics and Space Administration)	$24,149,767	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
43	Arctic Slope Regional Corporation 2 awardees, including Asrc Federal System Solutions LLC and Asrc Federal Data Solutions, LLC Top agencies Navy (Department of the Navy) DOI (Department of the Interior)	$24,099,899	0.4%	Rank history: #35 in FY2021, #33 in FY2022, #37 in FY2023 and #38 in FY2024; down 5 since FY2024.
44	Astrobotic Technology Inc Top agencies NASA (National Aeronautics and Space Administration)	$23,739,243	0.4%	Rank history: not on the FY2021–FY2024 lists; up 215 since FY2024.
45	Bay Area Environmental Research Institute Top agencies NASA (National Aeronautics and Space Administration)	$23,404,226	0.4%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023 and #44 in FY2024; down 1 since FY2024.
46	University of Maryland Baltimore County Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$23,326,652	0.4%	Rank history: not on the FY2021–FY2024 lists; up 108 since FY2024.
47	Texas A&M Engineering Experiment Station Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$23,087,042	0.4%	Rank history: not on the FY2021–FY2024 lists; up 68 since FY2024.
48	Creare LLC Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$22,639,091	0.4%	Rank history: not on the FY2021 list, #86 in FY2022 and not on the FY2023–FY2024 lists; up 175 since FY2024.
49	Amentum Holdings, Inc. 6 awardees, including Amentum Technology, Inc., The Keyw Corporation and Sotera Defense Solutions, Inc. Top agencies Navy (Department of the Navy)	$22,506,599	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
50	Georgia TECH Research Corp Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) Navy (Department of the Navy)	$21,283,397	0.4%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2023 and #27 in FY2024; down 23 since FY2024.
51	University of Hawaii Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$21,240,617	0.4%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2024; up 12 since FY2024.
52	Advanced Space LLC Top agencies NASA (National Aeronautics and Space Administration)	$21,220,025	0.4%	Rank history: not on the FY2021–FY2024 lists; up 142 since FY2024.
53	Smithsonian Institution Top agencies NASA (National Aeronautics and Space Administration)	$20,992,340	0.4%	Rank history: not on the FY2021–FY2023 lists and #94 in FY2024; up 41 since FY2024.
54	The Pennsylvania State University Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$20,825,403	0.4%	Rank history: #54 in FY2021, #38 in FY2022, #54 in FY2023 and #51 in FY2024; down 3 since FY2024.
55	Applied Research Associates, Inc. Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) USAF (Department of the Air Force)	$20,665,291	0.4%	Rank history: #14 in FY2021, #12 in FY2022, #22 in FY2023 and #20 in FY2024; down 35 since FY2024.
56	Camgian Corporation Top agencies Army (Department of the Army)	$20,625,150	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
57	Laulima Government Solutions, LLC Top agencies HHS (Department of Health and Human Services)	$19,806,709	0.4%	Rank history: #30 in FY2021, #29 in FY2022, #38 in FY2023 and #48 in FY2024; down 9 since FY2024.
58	Transportation Research Center Inc. Top agencies DOT (Department of Transportation)	$19,539,875	0.4%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2024; down 23 since FY2024.
59	The University of Alabama In Huntsville Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$19,537,593	0.4%	Rank history: not on the FY2021–FY2024 lists; up 390 since FY2024.
60	Coldquanta Inc. Through Infleqtion Quantum, LLC Top agencies NASA (National Aeronautics and Space Administration)	$19,119,903	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
61	University of Texas At Austin Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) Navy (Department of the Navy)	$18,536,625	0.3%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2024; down 3 since FY2024.
62	The Trustees of Columbia University In the City of New York Top agencies NASA (National Aeronautics and Space Administration) DARPA (Defense Advanced Research Projects Agency) Army (Department of the Army)	$18,429,246	0.3%	Rank history: #42 in FY2021, #54 in FY2022, #63 in FY2023 and #16 in FY2024; down 46 since FY2024.
63	Trustees of Boston University Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$18,048,944	0.3%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and not on the FY2024 list; up 46 since FY2024.
64	Science Applications International Corporation Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$17,577,460	0.3%	Rank history: not on the FY2021–FY2023 lists and #96 in FY2024; up 32 since FY2024.
65	Utah State University Space Dynamics Laboratory Top agencies Navy (Department of the Navy)	$17,535,076	0.3%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2024; down 18 since FY2024.
66	University of California, LOS Angeles Top agencies NASA (National Aeronautics and Space Administration) DOT (Department of Transportation) VA (Department of Veterans Affairs)	$17,352,267	0.3%	Rank history: not on the FY2021–FY2024 lists; up 57 since FY2024.
67	Regents of the University of Michigan Top agencies NASA (National Aeronautics and Space Administration) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$17,143,794	0.3%	Rank history: #85 in FY2021, #75 in FY2022, #67 in FY2023 and #75 in FY2024; up 8 since FY2024.
68	Emergent Biodefense Operations Lansing LLC Top agencies HHS (Department of Health and Human Services)	$17,104,200	0.3%	Rank history: not on the FY2021–FY2023 lists and #11 in FY2024; down 57 since FY2024.
69	Innovative Scientific Solutions Inc. Top agencies USAF (Department of the Air Force)	$17,050,364	0.3%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and #81 in FY2024; up 12 since FY2024.
70	University of Illinois Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$17,042,965	0.3%	Rank history: not on the FY2021–FY2024 lists; up 178 since FY2024.
71	Virginia Commonwealth University 2 awardees, including Virginia Polytechnic Institute & State University and Virginia State University Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration) DOT (Department of Transportation)	$16,590,645	0.3%	Rank history: not on the FY2021–FY2022 lists, #50 in FY2023 and not on the FY2024 list; up 98 since FY2024.
72	Vecprobio Inc. Top agencies HHS (Department of Health and Human Services)	$16,304,480	0.3%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2024; down 40 since FY2024.
73	Humanit Solutions LLC Top agencies NASA (National Aeronautics and Space Administration)	$15,877,777	0.3%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2024; down 18 since FY2024.
74	Excet, LLC Top agencies Navy (Department of the Navy)	$15,658,298	0.3%	Rank history: #39 in FY2021, #32 in FY2022, #44 in FY2023 and #33 in FY2024; down 41 since FY2024.
75	Neany Inc. Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense)	$15,461,638	0.3%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2024; down 58 since FY2024.
76	University of Florida Top agencies NASA (National Aeronautics and Space Administration) VA (Department of Veterans Affairs) Army (Department of the Army)	$15,301,788	0.3%	Rank history: not on the FY2021–FY2024 lists; up 32 since FY2024.
77	Arizona State University Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) Navy (Department of the Navy)	$15,155,964	0.3%	Rank history: not on the FY2021–FY2024 lists; up 135 since FY2024.
78	Universities Space Research Association Top agencies NASA (National Aeronautics and Space Administration)	$15,041,754	0.3%	Rank history: #25 in FY2021, #22 in FY2022, #39 in FY2023 and #29 in FY2024; down 49 since FY2024.
79	Mnemonics Inc. Top agencies Navy (Department of the Navy)	$14,980,573	0.3%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023 and not on the FY2024 list; up 70 since FY2024.
80	San Jose State University Research Foundation Top agencies NASA (National Aeronautics and Space Administration)	$14,822,571	0.3%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2023 and #65 in FY2024; down 15 since FY2024.
81	BAE Systems Space & Mission Systems Inc. Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$14,792,589	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
82	University of Washington Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$14,609,263	0.3%	Rank history: not on the FY2021–FY2024 lists; up 113 since FY2024.
83	Teamstaff Inc. Through Social & Scientific Systems, Inc. Top agencies HHS (Department of Health and Human Services)	$14,568,643	0.3%	Rank history: #32 in FY2021, #35 in FY2022, #43 in FY2023 and #64 in FY2024; down 19 since FY2024.
84	Semanticbits LLC Through ICF Incorporated, L.L.C. Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$14,407,751	0.3%	Rank history: not on the FY2021–FY2023 lists and #72 in FY2024; down 12 since FY2024.
85	General Dynamics Corporation 7 awardees, including General Dynamics Information Technology, Inc. and General Dynamics Mission Systems, Inc. Top agencies Army (Department of the Army) DOT (Department of Transportation) Navy (Department of the Navy)	$14,001,961	0.3%	Rank history: #15 in FY2021, #46 in FY2022, #31 in FY2023 and #40 in FY2024; down 45 since FY2024.
86	Carnegie-Mellon University Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$13,632,134	0.2%	Rank history: not on the FY2021 list, #41 in FY2022, #34 in FY2023 and #10 in FY2024; down 76 since FY2024.
87	New Horizons Aeronautics, LLC Top agencies NASA (National Aeronautics and Space Administration)	$13,215,354	0.2%	Rank history: #24 in FY2021, #25 in FY2022, #42 in FY2023 and #69 in FY2024; down 18 since FY2024.
88	Technology Service Corp Top agencies Navy (Department of the Navy)	$13,117,731	0.2%	Rank history: #27 in FY2021, #37 in FY2022, #60 in FY2023 and #97 in FY2024; up 9 since FY2024.
89	University of Dayton Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency) Army (Department of the Army)	$13,009,217	0.2%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2023 and #60 in FY2024; down 29 since FY2024.
90	University of Wisconsin System Top agencies NASA (National Aeronautics and Space Administration) HHS (Department of Health and Human Services)	$12,923,011	0.2%	Rank history: not on the FY2021–FY2024 lists; up 244 since FY2024.
91	University of Alaska Fairbanks Top agencies NASA (National Aeronautics and Space Administration)	$12,574,000	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
92	Red Six Aerospace Inc. Top agencies USAF (Department of the Air Force)	$12,342,131	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
93	Auburn University Top agencies DHS (Department of Homeland Security) NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$12,232,167	0.2%	Rank history: not on the FY2021 list, #67 in FY2022, not on the FY2023 list and #77 in FY2024; down 16 since FY2024.
94	Motiv Space Systems, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$12,148,650	0.2%	Rank history: not on the FY2021–FY2024 lists; up 74 since FY2024.
95	Morsecorp, Inc. Top agencies Army (Department of the Army)	$11,791,042	0.2%	Rank history: not on the FY2021 list, #100 in FY2022, #49 in FY2023 and #45 in FY2024; down 50 since FY2024.
96	University of Southern California Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration) DARPA (Defense Advanced Research Projects Agency)	$11,633,772	0.2%	Rank history: #53 in FY2021, not on the FY2022 list, #40 in FY2023 and not on the FY2024 list; up 331 since FY2024.
97	Sri International Top agencies Army (Department of the Army) DARPA (Defense Advanced Research Projects Agency) DLA (Defense Logistics Agency)	$11,579,627	0.2%	Rank history: not on the FY2021–FY2024 lists; up 51 since FY2024.
98	Opterus Research and Development, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$11,557,534	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
99	University Corporation for Atmospheric Research Top agencies NASA (National Aeronautics and Space Administration)	$11,546,079	0.2%	Rank history: #98 in FY2021, #68 in FY2022, #89 in FY2023 and #99 in FY2024; unchanged since FY2024.
100	Seti Institute Top agencies NASA (National Aeronautics and Space Administration)	$11,490,563	0.2%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2023 and not on the FY2024 list; up 21 since FY2024.

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100 of 1,730 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC AJ

Code	Net obligations	Largest contractor
AJ11 General Science and Technology R&D Services; General Science and Technology; Basic Research	$2,133,425,174	Georgia TECH Applied Research Corp
AJ12 General Science and Technology R&D Services; General Science and Technology; Applied Research	$1,573,985,513	Battelle Savannah River Alliance, LLC
AJ13 General Science & Technology R&D Services; General Science & Technology; Experimental Development	$733,050,616	American Systems Corporation
AJ14 General Science and Technology R&D Services; General Science and Technology; R&D Administrative Expenses	$538,947,512	Katalyst Space Technologies, LLC
AJ15 General Science & Technology R&D Services; General Science & Technology; R&D Facilities & Major Equipment	$146,467,991	Parsons Corporation

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 $5.54 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 2025 ran Oct 1, 2024 – Sep 30, 2025. 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 FY2024. "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 FY2024 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

Who were the top 10 PSC AJ contractors in FY2025?

1. Battelle Savannah River Alliance, LLC ($302M), 2. Georgia TECH Applied Research Corp ($256M), 3. Advanced Technology International ($133M), 4. The Mitre Corporation ($126M), 5. Assurance Technology Corp ($114M), 6. Science Systems and Applications, Inc. ($105M), 7. American Systems Corporation ($102M), 8. Leidos Holdings, Inc. ($90.8M), 9. University of Maryland, College Park ($83.6M), 10. Battelle Memorial Institute ($69.8M).

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