Top 100 Contractors in PSC L0: Technical Representative Services, FY2023

Name: Top 100 Contractors in PSC L0: Technical Representative Services, FY2023
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 75% of FY2023 PSC L0 contract dollars

Contract obligations: $2,647,505,237 Net of deobligations, by contracts coded PSC L0 or a code under it
Contractors: 533 Parent companies with an obligation
Largest contractor: Northrop Grumman Corporation $380 million, 13.6% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Northrop Grumman Corporation 10 awardees, including Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$380,202,724	13.6%	Rank history: #1 in FY2021, #1 in FY2022, #3 in FY2024 and #3 in FY2025; unchanged since FY2022.
2	BAE Systems PLC 4 awardees, including BAE Systems Technology Solutions & Services Inc. and BAE Systems Information and Electronic Systems Integration Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$376,770,210	13.5%	Rank history: #3 in FY2021, #2 in FY2022, #1 in FY2024 and #1 in FY2025; unchanged since FY2022.
3	Crowley Government Services Inc. 2 awardees Top agencies DOT (Department of Transportation)	$326,016,091	11.7%	Rank history: not on the FY2021 list, #13 in FY2022, #2 in FY2024 and #7 in FY2025; up 10 since FY2022.
4	RTX Corporation 16 awardees, including Raytheon Company Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force) Army (Department of the Army)	$288,505,378	10.4%	Rank history: #4 in FY2021, #3 in FY2022, #9 in FY2024 and #2 in FY2025; down 1 since FY2022.
5	The Boeing Company 7 awardees, including Insitu, Inc. and Boeing Aerospace Operations, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$238,821,820	8.6%	Rank history: #2 in FY2021, #4 in FY2022, #4 in FY2024 and #5 in FY2025; down 1 since FY2022.
6	Amentum Services, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$150,183,434	5.4%	Rank history: #5 in FY2021, #14 in FY2022, #6 in FY2024 and not on the FY2025 list; up 8 since FY2022.
7	Lockheed Martin Corporation 12 awardees, including Sikorsky Aircraft Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$130,535,588	4.7%	Rank history: #7 in FY2021, #5 in FY2022, #5 in FY2024 and #6 in FY2025; down 2 since FY2022.
8	Textron Inc. 3 awardees, including Textron Systems Corporation and Bell Textron Inc. Top agencies Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$81,098,609	2.9%	Rank history: #6 in FY2021, #6 in FY2022, #11 in FY2024 and #11 in FY2025; down 2 since FY2022.
9	Kbr, Inc. 3 awardees, including KBR Wyle Services, LLC Top agencies DOI (Department of the Interior) MDA (DOD Missile Defense Agency)	$59,808,836	2.1%	Rank history: #8 in FY2021, #7 in FY2022, #33 in FY2024 and not on the FY2025 list; down 2 since FY2022.
10	Technology Service Corp Top agencies USSOCOM (United States Special Operations Command) DHS (Department of Homeland Security)	$59,198,836	2.1%	Rank history: #33 in FY2021, #10 in FY2022, #13 in FY2024 and #14 in FY2025; unchanged since FY2022.
11	General Dynamics Corporation 6 awardees, including General Dynamics Mission Systems, Inc., Electric Boat Corporation and General Dynamics Land Systems Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$55,909,379	2.0%	Rank history: #15 in FY2021, #15 in FY2022, #16 in FY2024 and #15 in FY2025; up 4 since FY2022.
12	Scientific Research Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$46,293,502	1.7%	Rank history: #9 in FY2021, #11 in FY2022, #18 in FY2024 and #10 in FY2025; down 1 since FY2022.
13	Serco North America (Holdings) Inc Through Serco Inc. Top agencies Navy (Department of the Navy)	$41,256,227	1.5%	Rank history: #27 in FY2021, #12 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
14	General Atomic Technologies Corporation Through General Atomics Aeronautical Systems, Inc. Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force)	$40,327,008	1.4%	Rank history: #14 in FY2021, not on the FY2022 list, #27 in FY2024 and not on the FY2025 list; up 115 since FY2022.
15	Science Applications International Corporation 2 awardees Top agencies Navy (Department of the Navy)	$20,383,328	0.7%	Rank history: #54 in FY2021, #52 in FY2022, #14 in FY2024 and #8 in FY2025; up 37 since FY2022.
16	Predicate Logic Inc. Top agencies Navy (Department of the Navy)	$17,733,687	0.6%	Rank history: not on the FY2021 list, #18 in FY2022, #19 in FY2024 and #21 in FY2025; up 2 since FY2022.
17	Halvik LLC Top agencies Army (Department of the Army)	$15,856,632	0.6%	Rank history: #19 in FY2021, #19 in FY2022, #21 in FY2024 and #23 in FY2025; up 2 since FY2022.
18	General Electric Company 3 awardees Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$14,887,032	0.5%	Rank history: #17 in FY2021, #29 in FY2022, #23 in FY2024 and #30 in FY2025; up 11 since FY2022.
19	Koniag, Inc. 2 awardees, including Digitized Schematic Solutions LLC Top agencies USAF (Department of the Air Force)	$14,258,651	0.5%	Rank history: #20 in FY2021, #16 in FY2022, #25 in FY2024 and not on the FY2025 list; down 3 since FY2022.
20	Mele Associates Inc. Top agencies DOE (Department of Energy)	$13,967,927	0.5%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2024 and #26 in FY2025; new.
21	Tetra Tech, Inc. 2 awardees, including Tetra TECH ES, Inc. Top agencies USAID (US Agency for International Development) DHS (Department of Homeland Security)	$13,252,487	0.5%	Rank history: not on the FY2021–FY2022 lists, #12 in FY2024 and not on the FY2025 list; new.
22	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$12,509,129	0.4%	Rank history: not on the FY2021 list, #49 in FY2022, #30 in FY2024 and #20 in FY2025; up 27 since FY2022.
23	Great Eastern Group, Inc. Top agencies Navy (Department of the Navy)	$11,277,731	0.4%	Rank history: #22 in FY2021, #22 in FY2022, #28 in FY2024 and #37 in FY2025; down 1 since FY2022.
24	Koam Engineering Systems, Inc. Top agencies Navy (Department of the Navy)	$10,208,663	0.4%	Rank history: #88 in FY2021, not on the FY2022 list, #41 in FY2024 and #100 in FY2025; returned.
25	Trident Research, LLC Top agencies Navy (Department of the Navy)	$10,176,151	0.4%	Rank history: #42 in FY2021, #92 in FY2022, #55 in FY2024 and #48 in FY2025; up 67 since FY2022.
26	Leidos Holdings, Inc. 4 awardees, including Leidos, Inc. Top agencies USSOCOM (United States Special Operations Command) Navy (Department of the Navy) Army (Department of the Army)	$9,791,604	0.4%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2024 and not on the FY2025 list; new.
27	Hatalom Corp Top agencies Navy (Department of the Navy)	$8,479,450	0.3%	Rank history: #32 in FY2021, #24 in FY2022, #35 in FY2024 and #41 in FY2025; down 3 since FY2022.
28	Centurum Inc. Through Centurum Information Technology Inc. Top agencies Navy (Department of the Navy)	$8,020,805	0.3%	Rank history: #18 in FY2021, #23 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
29	Mhsystems Inc. Top agencies USAF (Department of the Air Force)	$7,556,716	0.3%	Rank history: not on the FY2021 list, #37 in FY2022, #29 in FY2024 and #35 in FY2025; up 8 since FY2022.
30	Synectic Solutions, Inc. Top agencies Navy (Department of the Navy)	$6,974,265	0.3%	Rank history: #25 in FY2021, #26 in FY2022, #37 in FY2024 and #33 in FY2025; down 4 since FY2022.
31	The Remi Group LLC Top agencies HHS (Department of Health and Human Services)	$6,736,465	0.2%	Rank history: #40 in FY2021, #34 in FY2022, #71 in FY2024 and not on the FY2025 list; up 3 since FY2022.
32	Compliance Corporation Top agencies Navy (Department of the Navy)	$6,173,343	0.2%	Rank history: #35 in FY2021, #30 in FY2022, #63 in FY2024 and not on the FY2025 list; down 2 since FY2022.
33	Strategic Enterprise Solutions Inc. Through Steampunk, Inc. Top agencies USAID (US Agency for International Development)	$6,030,079	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
34	Cssi Inc. Top agencies Navy (Department of the Navy)	$5,715,445	0.2%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2024 and #53 in FY2025; up 190 since FY2022.
35	JRC Integrated Systems, LLC Top agencies Navy (Department of the Navy)	$5,215,192	0.2%	Rank history: #44 in FY2021, #38 in FY2022, #46 in FY2024 and #39 in FY2025; up 3 since FY2022.
36	Shoulder 2 Shoulder Inc. Top agencies Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$5,118,248	0.2%	Rank history: #29 in FY2021, #42 in FY2022, #43 in FY2024 and #49 in FY2025; up 6 since FY2022.
37	HP Enterprise Services LLC 2 awardees, including Peraton Inc. and Onsolve LLC Top agencies Navy (Department of the Navy)	$4,855,279	0.2%	Rank history: #39 in FY2021, #32 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
38	Evotech, LLC Top agencies DOT (Department of Transportation)	$4,847,132	0.2%	Rank history: #60 in FY2021, #39 in FY2022, #39 in FY2024 and #43 in FY2025; up 1 since FY2022.
39	American Systems Corporation Top agencies Navy (Department of the Navy)	$4,680,000	0.2%	Rank history: #43 in FY2021, #40 in FY2022, #49 in FY2024 and #50 in FY2025; up 1 since FY2022.
40	Honeywell International Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$4,678,792	0.2%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2024 and #88 in FY2025; up 106 since FY2022.
41	DTG Aviation Inc. Top agencies DHS (Department of Homeland Security)	$4,543,863	0.2%	Rank history: #46 in FY2021, #43 in FY2022, #48 in FY2024 and not on the FY2025 list; up 2 since FY2022.
42	The Pennsylvania State University Top agencies Navy (Department of the Navy) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$4,456,417	0.2%	Rank history: not on the FY2021 list, #27 in FY2022, #42 in FY2024 and not on the FY2025 list; down 15 since FY2022.
43	Riptide Software, Inc. Top agencies Navy (Department of the Navy)	$4,018,565	0.1%	Rank history: #21 in FY2021, #41 in FY2022, #67 in FY2024 and not on the FY2025 list; down 2 since FY2022.
44	L3Harris Technologies, Inc. 4 awardees, including L3Harris Maritime Services Inc. Top agencies Navy (Department of the Navy)	$3,966,167	0.1%	Rank history: #37 in FY2021, #36 in FY2022, #8 in FY2024 and #9 in FY2025; down 8 since FY2022.
45	The Informatics Applications Group Inc. Top agencies Navy (Department of the Navy)	$3,956,674	0.1%	Rank history: #24 in FY2021, #25 in FY2022, not on the FY2024 list and #54 in FY2025; down 20 since FY2022.
46	Didlake Inc. Top agencies DOE (Department of Energy)	$3,872,607	0.1%	Rank history: #57 in FY2021, #54 in FY2022, #64 in FY2024 and #60 in FY2025; up 8 since FY2022.
47	F3Ea Inc. Top agencies Navy (Department of the Navy)	$3,839,129	0.1%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2024 and not on the FY2025 list; new.
48	Serco Inc Top agencies Navy (Department of the Navy)	$3,762,021	0.1%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2024 and #18 in FY2025; new.
49	Ducom Incorporated Top agencies Army (Department of the Army) Navy (Department of the Navy)	$3,380,862	0.1%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2024 and not on the FY2025 list; new.
50	Adamo Construction Inc. Top agencies Navy (Department of the Navy)	$2,905,573	0.1%	Rank history: #47 in FY2021, #51 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
51	Airbus Americas Inc. Through Airbus Helicopters, Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$2,746,859	0.1%	Rank history: #50 in FY2021, #44 in FY2022, #61 in FY2024 and not on the FY2025 list; down 7 since FY2022.
52	United Paradyne Corp 2 awardees Top agencies Navy (Department of the Navy)	$2,739,161	0.1%	Rank history: not on the FY2021 list, #81 in FY2022 and not on the FY2024–FY2025 lists; up 29 since FY2022.
53	Deloitte Consulting LLP Top agencies HHS (Department of Health and Human Services)	$2,729,694	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
54	Cummins Inc. Top agencies Army (Department of the Army)	$2,658,518	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
55	Skyquest Aviation LLC Top agencies DOJ (Department of Justice)	$2,584,459	0.1%	Rank history: #45 in FY2021, #45 in FY2022, not on the FY2024 list and #82 in FY2025; down 10 since FY2022.
56	Dexis Interactive Incorporated Top agencies USAID (US Agency for International Development)	$2,510,677	0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #74 in FY2025; new.
57	Life Cycle Engineering Inc. Top agencies Navy (Department of the Navy)	$2,482,820	0.1%	Rank history: #56 in FY2021, #50 in FY2022, #59 in FY2024 and #58 in FY2025; down 7 since FY2022.
58	Whitney Bradley & Brown, Inc. Through Brtrc Federal Solutions, Inc. Top agencies Army (Department of the Army)	$2,477,787	0.1%	Rank history: #62 in FY2021, #31 in FY2022 and not on the FY2024–FY2025 lists; down 27 since FY2022.
59	P&G Memorials LLC Top agencies VA (Department of Veterans Affairs)	$2,247,255	0.1%	Rank history: not on the FY2021–FY2022 lists, #65 in FY2024 and #64 in FY2025; up 90 since FY2022.
60	Valkyrie Enterprises, LLC 2 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$1,994,714	0.1%	Rank history: #61 in FY2021, #79 in FY2022, #62 in FY2024 and #65 in FY2025; up 19 since FY2022.
61	Aerovironment, Inc. Through Arcturus Uav, Inc. Top agencies USSOCOM (United States Special Operations Command)	$1,940,979	0.1%	Rank history: #12 in FY2021, #9 in FY2022 and not on the FY2024–FY2025 lists; down 52 since FY2022.
62	Nova Global Supply and Services LLC Through Valiant Global Defense Services Inc. Top agencies Navy (Department of the Navy)	$1,869,281	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
63	Mark G. Miller, Inc. Top agencies USAF (Department of the Air Force)	$1,682,428	0.1%	Rank history: not on the FY2021 list, #95 in FY2022, #66 in FY2024 and #56 in FY2025; up 32 since FY2022.
64	Wheelhouse Group LLC Top agencies Treasury (Department of the Treasury)	$1,625,640	0.1%	Rank history: #71 in FY2021, #67 in FY2022 and not on the FY2024–FY2025 lists; up 3 since FY2022.
65	Red Duke Strategies LLC Top agencies VA (Department of Veterans Affairs)	$1,608,713	0.1%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2024 and not on the FY2025 list; new.
66	Pinter Memorials Inc. Top agencies VA (Department of Veterans Affairs)	$1,516,552	0.1%	Rank history: not on the FY2021 list, #72 in FY2022, not on the FY2024 list and #68 in FY2025; up 6 since FY2022.
67	Afognak Native Corporation Through Red Peak Technical Services, LLC Top agencies DHS (Department of Homeland Security)	$1,496,331	0.1%	Rank history: not on the FY2021 list, #65 in FY2022 and not on the FY2024–FY2025 lists; down 2 since FY2022.
68	Strongbridge LLC Top agencies DOT (Department of Transportation)	$1,414,273	0.1%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2024 and #91 in FY2025; new.
69	Napa Sierra Top agencies Army (Department of the Army)	$1,344,468	<0.1%	Rank history: not on the FY2021 list, #60 in FY2022 and not on the FY2024–FY2025 lists; down 9 since FY2022.
70	Andromeda Systems Incorporated Top agencies Navy (Department of the Navy)	$1,293,078	<0.1%	Rank history: not on the FY2021 list, #69 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
71	Gulf Coast Wilbert Inc. Top agencies VA (Department of Veterans Affairs)	$1,214,675	<0.1%	Rank history: not on the FY2021 list, #90 in FY2022, #78 in FY2024 and #85 in FY2025; up 19 since FY2022.
72	Culpepper & Associates Security Services Inc. Top agencies Navy (Department of the Navy)	$1,125,598	<0.1%	Rank history: #87 in FY2021, #71 in FY2022, #80 in FY2024 and #80 in FY2025; down 1 since FY2022.
73	DRS Global Enterprise Solutions Inc 2 awardees, including DRS Advanced ISR LLC and Engineered Coil Company Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,105,470	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
74	Johnsondanforth, Inc. Top agencies VA (Department of Veterans Affairs)	$1,054,271	<0.1%	Rank history: #81 in FY2021, #78 in FY2022, #83 in FY2024 and #84 in FY2025; up 4 since FY2022.
75	Thermo Electron Corporation 3 awardees, including Life Technologies Corporation and Thermo Electron North America LLC Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) Navy (Department of the Navy)	$1,053,879	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 85 since FY2022.
76	WPP PLC Through Ogilvy Public Relations Worldwide LLC Top agencies USAID (US Agency for International Development)	$1,050,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 35 since FY2022.
77	Cubic Digital Intelligence Inc. Through Cubic Defense Applications, Inc. Top agencies Navy (Department of the Navy)	$1,032,509	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 57 since FY2022.
78	Imes Group Holdings Ltd Through Imes, Inc. Top agencies Navy (Department of the Navy)	$971,067	<0.1%	Rank history: #96 in FY2021, #87 in FY2022, #86 in FY2024 and not on the FY2025 list; up 9 since FY2022.
79	American CMG Services, Inc. Top agencies Navy (Department of the Navy)	$961,750	<0.1%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2024 and not on the FY2025 list; up 52 since FY2022.
80	Oshkosh Corp Through Oshkosh Defense LLC Top agencies Navy (Department of the Navy)	$952,967	<0.1%	Rank history: #49 in FY2021, #97 in FY2022 and not on the FY2024–FY2025 lists; up 17 since FY2022.
81	Advanced Internet Marketing, Inc. Top agencies Navy (Department of the Navy)	$922,969	<0.1%	Rank history: #74 in FY2021, #70 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
82	Semperserve LLC Top agencies DOS (Department of State)	$908,959	<0.1%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2024 and not on the FY2025 list; up 68 since FY2022.
83	Teksynap Corporation Top agencies Army (Department of the Army)	$859,543	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
84	Rolls-Royce Military Aero Engines Ltd 3 awardees, including Rolls-Royce Solutions America Inc. and Rolls-Royce Corporation Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) USSOCOM (United States Special Operations Command)	$844,628	<0.1%	Rank history: #69 in FY2021, #89 in FY2022 and not on the FY2024–FY2025 lists; up 5 since FY2022.
85	Communications Resource Inc. Top agencies HHS (Department of Health and Human Services) DOT (Department of Transportation)	$838,187	<0.1%	Rank history: #83 in FY2021, #98 in FY2022, #95 in FY2024 and #92 in FY2025; up 13 since FY2022.
86	Johnson Controls Industries Through Johnson Controls, Inc. Top agencies USAF (Department of the Air Force) SSA (Social Security Administration)	$745,488	<0.1%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2024 and not on the FY2025 list; new.
87	Intellectechs Inc. Top agencies Navy (Department of the Navy)	$713,060	<0.1%	Rank history: #100 in FY2021, not on the FY2022 list, #81 in FY2024 and #90 in FY2025; up 17 since FY2022.
88	I-Mazing Solutions Inc. Top agencies Navy (Department of the Navy)	$707,679	<0.1%	Rank history: #55 in FY2021, #46 in FY2022 and not on the FY2024–FY2025 lists; down 42 since FY2022.
89	Fullidity LLC Top agencies DHS (Department of Homeland Security)	$700,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
90	Fairbanks Morse LLC Top agencies DHS (Department of Homeland Security)	$697,391	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
91	Paragone Solutions, Inc. Top agencies DHS (Department of Homeland Security)	$695,637	<0.1%	Rank history: not on the FY2021 list, #100 in FY2022 and not on the FY2024–FY2025 lists; up 9 since FY2022.
92	System Dynamics International Incorporated Top agencies USAF (Department of the Air Force)	$628,470	<0.1%	Rank history: #79 in FY2021, #85 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
93	BSC Systems, Inc. Top agencies Navy (Department of the Navy)	$605,383	<0.1%	Rank history: #86 in FY2021, #93 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
94	W R Systems Ltd. Top agencies Navy (Department of the Navy)	$598,487	<0.1%	Rank history: not on the FY2021 list, #94 in FY2022, not on the FY2024 list and #29 in FY2025; unchanged since FY2022.
95	Contractor Support Services Inc. Top agencies Navy (Department of the Navy)	$594,144	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #99 in FY2025; up 13 since FY2022.
96	Affordable Engineering Services L.L.C. Top agencies Navy (Department of the Navy)	$580,613	<0.1%	Rank history: #78 in FY2021, not on the FY2022 list, #69 in FY2024 and #38 in FY2025; up 60 since FY2022.
97	The Siegel Group, LLC Top agencies USAF (Department of the Air Force)	$572,882	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 23 since FY2022.
98	Bloomsburie LLC Top agencies OSD (Office of the Secretary of Defense)	$518,726	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 18 since FY2022.
99	The Donohoe Companies. Inc. Through AAA Complete Building Services Inc. Top agencies Smithsonian (Smithsonian Institution)	$502,465	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 7 since FY2022.
100	Pearlson Shiplift Corporation Top agencies Army (Department of the Army)	$489,346	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

Show 75 more

100 of 533 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC L0

Code	Net obligations	Largest contractor
L099 Technical Representation Services: Miscellaneous	$258,813,203	BAE Systems PLC
L059 Technical Representation Services: Electrical and Electronic Equipment Components	$65,138,572	Science Applications International Corporation
L020 Technical Representation Services: Ship and Marine Equipment	$42,878,604	Amentum Services, Inc.
L063 Technical Representation Services: Alarm, Signal, and Security Detection Systems	$7,657,060	Adamo Construction Inc.
L066 Technical Representation Services: Instruments and Laboratory Equipment	$7,512,605	The Remi Group LLC

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 $2.79 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

Who were the top 10 PSC L0 contractors in FY2023?

1. Northrop Grumman Corporation ($380M), 2. BAE Systems PLC ($377M), 3. Crowley Government Services Inc. ($326M), 4. RTX Corporation ($289M), 5. The Boeing Company ($239M), 6. Amentum Services, Inc. ($150M), 7. Lockheed Martin Corporation ($131M), 8. Textron Inc. ($81.1M), 9. Kbr, Inc. ($59.8M), 10. Technology Service Corp ($59.2M).

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