Top 73 Contractors in PSC AC31: National Defense R&D Services; Defense-Related Activities; Basic Research, FY2025

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

The top 10 won 87% of FY2025 PSC AC31 contract dollars

Ranking facts

Contract obligations
$1,077,818,093 Net of deobligations, by contracts coded PSC AC31
Contractors
76 Parent companies with an obligation
Largest contractor
Massachusetts Institute of Technology $690 million, 63.2% of obligations
Data as of

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 73 rows as CSV

Full ranking

Rank Contractor Net obligations Share Trend
1 $690,121,605
Rank history: not on the FY2021–FY2022 lists, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2 $65,066,718
Rank history: not on the FY2021–FY2023 lists and #2 in FY2024; unchanged since FY2024.
3 $32,025,185
Rank history: #26 in FY2021, #8 in FY2022, #6 in FY2023 and #8 in FY2024; up 5 since FY2024.
4 $28,245,390
Rank history: #40 in FY2021, #1 in FY2022, #2 in FY2023 and #6 in FY2024; up 2 since FY2024.
5 $27,517,928
Rank history: not on the FY2021–FY2023 lists and #13 in FY2024; up 8 since FY2024.
6 $26,557,220
Rank history: #7 in FY2021, #27 in FY2022, #9 in FY2023 and #7 in FY2024; up 1 since FY2024.
7 $22,696,490
Rank history: #23 in FY2021, #17 in FY2022, #10 in FY2023 and #10 in FY2024; up 3 since FY2024.
8 $21,509,804
Rank history: not on the FY2021–FY2023 lists and #4 in FY2024; down 4 since FY2024.
9
RTX Corporation Through Raytheon Company
$20,480,565
Rank history: not on the FY2021–FY2024 lists; new.
10 $16,736,824
Rank history: #1 in FY2021, #96 in FY2022, not on the FY2023 list and #5 in FY2024; down 5 since FY2024.
11 $15,821,692
Rank history: not on the FY2021–FY2023 lists and #73 in FY2024; up 62 since FY2024.
12 $10,482,698
Rank history: not on the FY2021–FY2022 lists, #38 in FY2023 and #19 in FY2024; up 7 since FY2024.
13 $10,463,617
Rank history: not on the FY2021 list, #10 in FY2022, #11 in FY2023 and #11 in FY2024; down 2 since FY2024.
14 $9,380,586
Rank history: not on the FY2021–FY2023 lists and #21 in FY2024; up 7 since FY2024.
15
Astroscale US Inc
$8,749,116
Rank history: not on the FY2021–FY2024 lists; new.
16 $7,051,661
Rank history: not on the FY2021–FY2023 lists and #24 in FY2024; up 8 since FY2024.
17 $6,214,488
Rank history: not on the FY2021–FY2024 lists; new.
18
Matrix Research Inc
$5,897,330
Rank history: not on the FY2021 list, #53 in FY2022, #23 in FY2023 and #18 in FY2024; unchanged since FY2024.
19 $5,312,120
Rank history: not on the FY2021–FY2022 lists, #8 in FY2023 and #27 in FY2024; up 8 since FY2024.
20 $5,287,700
Rank history: not on the FY2021 list, #42 in FY2022, #33 in FY2023 and #34 in FY2024; up 14 since FY2024.
21 $4,894,556
Rank history: not on the FY2021 list, #20 in FY2022, #17 in FY2023 and #23 in FY2024; up 2 since FY2024.
22 $3,320,659
Rank history: not on the FY2021–FY2024 lists; new.
23 $3,262,952
Rank history: #11 in FY2021, #31 in FY2022, #24 in FY2023 and #33 in FY2024; up 10 since FY2024.
24
KBR Wyle Services LLC
$2,480,646
Rank history: not on the FY2021–FY2023 lists and #9 in FY2024; down 15 since FY2024.
25 $2,470,768
Rank history: not on the FY2021–FY2023 lists and #12 in FY2024; down 13 since FY2024.
26 $2,200,000
Rank history: not on the FY2021 list, #7 in FY2022, #5 in FY2023 and #22 in FY2024; down 4 since FY2024.
27 $1,678,763
Rank history: not on the FY2021–FY2024 lists; new.
28 $1,596,238
Rank history: #13 in FY2021, #23 in FY2022, #12 in FY2023 and #16 in FY2024; down 12 since FY2024.
29 $1,483,326
Rank history: not on the FY2021 list, #33 in FY2022, #26 in FY2023 and #20 in FY2024; down 9 since FY2024.
30
Indal Technologies Inc Through Curtiss-Wright Flow Control Corporation
$1,422,347
Rank history: not on the FY2021–FY2024 lists; new.
31 $1,378,856
Rank history: not on the FY2021–FY2023 lists and #30 in FY2024; down 1 since FY2024.
32 $1,358,487
Rank history: #30 in FY2021, #40 in FY2022, #43 in FY2023 and #40 in FY2024; up 8 since FY2024.
33 $1,303,202
Rank history: not on the FY2021–FY2022 lists, #44 in FY2023 and #44 in FY2024; up 11 since FY2024.
34 $1,159,607
Rank history: #8 in FY2021, #12 in FY2022, #4 in FY2023 and #15 in FY2024; down 19 since FY2024.
35
Welin Lambie Limited Through Fairbanks Morse, LLC
$1,098,371
Rank history: not on the FY2021–FY2024 lists; new.
36 $980,000
Rank history: not on the FY2021–FY2024 lists; new.
37 $976,424
Rank history: not on the FY2021–FY2023 lists and #32 in FY2024; down 5 since FY2024.
38 $862,434
Rank history: not on the FY2021 list, #94 in FY2022, not on the FY2023 list and #26 in FY2024; down 12 since FY2024.
39 $811,185
Rank history: not on the FY2021–FY2022 lists, #60 in FY2023 and not on the FY2024 list; returned.
40 $663,768
Rank history: not on the FY2021–FY2022 lists, #56 in FY2023 and #68 in FY2024; up 28 since FY2024.
41 $604,733
Rank history: not on the FY2021–FY2024 lists; new.
42 $602,858
Rank history: not on the FY2021–FY2023 lists and #58 in FY2024; up 16 since FY2024.
43 $559,428
Rank history: not on the FY2021–FY2024 lists; new.
44 $527,850
Rank history: not on the FY2021–FY2022 lists, #49 in FY2023 and #42 in FY2024; down 2 since FY2024.
45 $511,440
Rank history: not on the FY2021 list, #41 in FY2022, #66 in FY2023 and #65 in FY2024; up 20 since FY2024.
46 $508,783
Rank history: #25 in FY2021, #48 in FY2022, #53 in FY2023 and #47 in FY2024; up 1 since FY2024.
47 $500,000
Rank history: not on the FY2021–FY2024 lists; new.
48
Maritime Surveillance Associates Inc
$415,388
Rank history: not on the FY2021–FY2024 lists; new.
49 $396,150
Rank history: not on the FY2021–FY2024 lists; new.
50 $379,755
Rank history: #28 in FY2021, #45 in FY2022, #37 in FY2023 and #49 in FY2024; down 1 since FY2024.
51 $358,899
Rank history: not on the FY2021 list, #74 in FY2022, #62 in FY2023 and #56 in FY2024; up 5 since FY2024.
52 $322,296
Rank history: not on the FY2021–FY2023 lists and #53 in FY2024; up 1 since FY2024.
53 $268,058
Rank history: not on the FY2021–FY2024 lists; new.
54 $206,240
Rank history: not on the FY2021 list, #92 in FY2022, #57 in FY2023 and #50 in FY2024; down 4 since FY2024.
55 $190,119
Rank history: not on the FY2021 list, #65 in FY2022, #45 in FY2023 and #52 in FY2024; down 3 since FY2024.
56 $149,611
Rank history: #16 in FY2021, not on the FY2022 list, #67 in FY2023 and not on the FY2024 list; returned.
57 $144,852
Rank history: #51 in FY2021, not on the FY2022–FY2023 lists and #62 in FY2024; up 5 since FY2024.
58
Web Sensing LLC
$127,644
Rank history: not on the FY2021–FY2024 lists; new.
59 $120,409
Rank history: not on the FY2021–FY2023 lists and #46 in FY2024; down 13 since FY2024.
60 $106,612
Rank history: not on the FY2021–FY2024 lists; new.
61 $104,111
Rank history: not on the FY2021 list, #93 in FY2022 and not on the FY2023–FY2024 lists; returned.
62 $99,994
Rank history: not on the FY2021–FY2024 lists; new.
63 $96,409
Rank history: not on the FY2021–FY2023 lists and #25 in FY2024; down 38 since FY2024.
64 $60,000
Rank history: not on the FY2021–FY2024 lists; new.
65
Serco Inc
$55,919
Rank history: not on the FY2021–FY2024 lists; new.
66 $25,000
Rank history: not on the FY2021 list, #69 in FY2022, not on the FY2023 list and #79 in FY2024; up 13 since FY2024.
67 $10,000
Rank history: not on the FY2021–FY2024 lists; new.
68
Intecon LLC
$2,500
Rank history: not on the FY2021–FY2024 lists; new.
69
Future Technologies Inc.
$2,500
Rank history: not on the FY2021–FY2024 lists; new.
70 $2,500
Rank history: not on the FY2021–FY2024 lists; new.
71 $2,500
Rank history: not on the FY2021–FY2024 lists; new.
72 $2,500
Rank history: not on the FY2021–FY2024 lists; new.
73 $2,500
Rank history: not on the FY2021–FY2024 lists; new.
Show 48 more

73 of 76 contractors listed here. See the rest on GovTribe.

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 $1.09 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 AC31 contractors in FY2025?

1. Massachusetts Institute of Technology ($690M), 2. Advanced Technology International ($65.1M), 3. Carnegie Mellon University ($32M), 4. Cubrc, Inc. ($28.2M), 5. Mclaughlin Research Corporation ($27.5M), 6. Lockheed Martin Corporation ($26.6M), 7. Hypergiant Galactic Systems, Inc. ($22.7M), 8. Textron Inc. ($21.5M), 9. RTX Corporation ($20.5M), 10. General Dynamics Corporation ($16.7M).

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