Top 100 Contractors in PSC J059: Maintenance, Repair and Rebuilding of Equipment: Electrical and Electronic Equipment Components, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Northrop Grumman Corporation 13 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) DOT (Department of Transportation) Army (Department of the Army)	$80,321,674	8.7%	Rank history: #4 in FY2022, #9 in FY2023, #4 in FY2024 and #2 in FY2025; unchanged since FY2020.
2	Serco North America (Holdings) Inc Through Serco Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$73,641,985	7.9%	Rank history: #1 in FY2022, #13 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
3	Science Applications International Corporation 3 awardees Top agencies Navy (Department of the Navy) Treasury (Department of the Treasury) USAF (Department of the Air Force)	$55,030,625	5.9%	Rank history: #2 in FY2022, #5 in FY2023, #19 in FY2024 and #6 in FY2025; unchanged since FY2020.
4	RTX Corporation 16 awardees, including Raytheon Company, Data Link Solutions LLC and Rockwell Collins, Inc. Top agencies USAF (Department of the Air Force) DISA (Defense Information Systems Agency) Army (Department of the Army)	$46,614,437	5.0%	Rank history: #3 in FY2022, #2 in FY2023, #5 in FY2024 and #10 in FY2025; up 19 since FY2020.
5	L3Harris Technologies, Inc. 20 awardees, including L3Harris Technologies Integrated Systems L.P., L3 Technologies, Inc. and Wescam Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DHS (Department of Homeland Security)	$41,254,225	4.4%	Rank history: #7 in FY2022, #1 in FY2023, #2 in FY2024 and #7 in FY2025; up 1 since FY2020.
6	Lockheed Martin Corporation 8 awardees, including Sikorsky Aircraft Corporation Top agencies USAF (Department of the Air Force) DHS (Department of Homeland Security)	$32,469,420	3.5%	Rank history: #5 in FY2022, #10 in FY2023, #7 in FY2024 and #24 in FY2025; down 2 since FY2020.
7	Chugach Technical Solutions LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$23,886,647	2.6%	Rank history: #6 in FY2022, #6 in FY2023, #6 in FY2024 and #15 in FY2025; up 43 since FY2020.
8	The Boeing Company 5 awardees Top agencies USAF (Department of the Air Force)	$20,272,905	2.2%	Rank history: #16 in FY2022, #15 in FY2023, #26 in FY2024 and #93 in FY2025; new, not ranked in FY2020.
9	OSI Systems Inc. Through American Science & Engineering Inc. Top agencies DHS (Department of Homeland Security) WHS (DOD Washington Headquarters Service)	$20,248,694	2.2%	Rank history: #9 in FY2022, #45 in FY2023 and not on the FY2024–FY2025 lists; up 145 since FY2020.
10	Mission Essential Personnel LLC Through The Mission Essential Group, LLC Top agencies USAF (Department of the Air Force)	$15,708,231	1.7%	Rank history: #10 in FY2022, #18 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
11	Sev1Tech, LLC Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$15,683,282	1.7%	Rank history: #63 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
12	Kbr, Inc. 2 awardees, including KBR Services, LLC and KBR Wyle Services, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$14,064,292	1.5%	Rank history: #22 in FY2022, #21 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
13	BAE Systems PLC 5 awardees, including BAE Systems Technology Solutions & Services Inc. and BAE Systems Information and Electronic Systems Integration Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$14,004,876	1.5%	Rank history: #8 in FY2022, #3 in FY2023, #3 in FY2024 and #3 in FY2025; up 32 since FY2020.
14	General Dynamics Satcom Technologies Inc. 4 awardees, including CPI Electron Device Business, Inc., Microwave Power Products, Inc. and CPI Satcom & Antenna Technologies Inc. Top agencies USAF (Department of the Air Force) DOT (Department of Transportation) Commerce (Department of Commerce)	$13,697,996	1.5%	Rank history: #33 in FY2022, #39 in FY2023, #89 in FY2024 and not on the FY2025 list; up 6 since FY2020.
15	CACI International Inc. 3 awardees, including Caci Nss, LLC, Caci, Inc. - Federal and LGS Innovations LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$13,240,203	1.4%	Rank history: #12 in FY2022, #23 in FY2023, #39 in FY2024 and #17 in FY2025; new, not ranked in FY2020.
16	T1 Construction LLC Top agencies USAF (Department of the Air Force)	$12,061,843	1.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
17	Centurum Inc. Through Centurum Information Technology Inc. Top agencies Navy (Department of the Navy)	$11,739,655	1.3%	Rank history: not on the FY2022–FY2025 lists; up 26 since FY2020.
18	Arlington Capital Partners IV, L.P. Through Tyto Athene, LLC Top agencies USAF (Department of the Air Force)	$11,735,950	1.3%	Rank history: #21 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
19	Skookum Educational Programs Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$11,521,033	1.2%	Rank history: #39 in FY2022 and not on the FY2023–FY2025 lists; up 14 since FY2020.
20	Afognak Native Corporation Through Alutiiq Information Management, LLC Top agencies Navy (Department of the Navy)	$10,173,555	1.1%	Rank history: #14 in FY2022, #16 in FY2023, #40 in FY2024 and not on the FY2025 list; up 4 since FY2020.
21	Atlas Technologies, Inc. Top agencies Navy (Department of the Navy)	$10,064,017	1.1%	Rank history: #27 in FY2022, #42 in FY2023 and not on the FY2024–FY2025 lists; down 16 since FY2020.
22	Chartis Consulting Corporation Top agencies DHS (Department of Homeland Security)	$8,888,224	1.0%	Rank history: #31 in FY2022, #35 in FY2023, #27 in FY2024 and not on the FY2025 list; down 8 since FY2020.
23	Stellant Systems Inc. Top agencies USAF (Department of the Air Force)	$8,475,738	0.9%	Rank history: not on the FY2022–FY2025 lists; up 198 since FY2020.
24	M.c. Dean, Inc. Top agencies Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$8,072,900	0.9%	Rank history: #38 in FY2022, not on the FY2023 list, #69 in FY2024 and #18 in FY2025; up 7 since FY2020.
25	General Electric Company 4 awardees, including GE Energy Power Conversion USA Inc., GE Aviation Systems LLC and Nexus Controls LLC Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$7,405,604	0.8%	Rank history: #19 in FY2022 and not on the FY2023–FY2025 lists; down 17 since FY2020.
26	Intific Inc Through Cubic Defense Applications, Inc. Top agencies USAF (Department of the Air Force)	$6,522,830	0.7%	Rank history: not on the FY2022–FY2025 lists; up 9 since FY2020.
27	Government of Canada 2 awardees, including Canadian Commercial Corporation and National Research Council Canada Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$6,175,517	0.7%	Rank history: #46 in FY2022, #44 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
28	Johnson Controls Security Solutions LLC 5 awardees, including Johnson Controls, Inc. and Johnson Controls Fire Protection LP Top agencies DHS (Department of Homeland Security) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$6,035,529	0.7%	Rank history: #32 in FY2022, #62 in FY2023 and not on the FY2024–FY2025 lists; down 19 since FY2020.
29	Sielman S.A. Top agencies Army (Department of the Army)	$5,977,779	0.6%	Rank history: #72 in FY2022, #28 in FY2023, #15 in FY2024 and #5 in FY2025; up 32 since FY2020.
30	IAI North America Inc. 2 awardees, including Stark Aerospace Inc. and Elta North America Inc. Top agencies Army (Department of the Army) DOT (Department of Transportation)	$5,904,117	0.6%	Rank history: #23 in FY2022, #33 in FY2023 and not on the FY2024–FY2025 lists; up 111 since FY2020.
31	King & George, LLC Top agencies Army (Department of the Army)	$5,881,064	0.6%	Rank history: #35 in FY2022, #80 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
32	Tristar, Inc. Top agencies Navy (Department of the Navy)	$5,693,683	0.6%	Rank history: #40 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
33	Honeywell International Inc. 9 awardees, including Honeywell Building Solutions GMBH Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$5,676,124	0.6%	Rank history: not on the FY2022–FY2024 lists and #28 in FY2025; up 25 since FY2020.
34	Youone Engineering Co.,Ltd Top agencies Army (Department of the Army)	$5,441,669	0.6%	Rank history: #18 in FY2022, #32 in FY2023, #45 in FY2024 and #62 in FY2025; down 16 since FY2020.
35	Motorola Inc Through Motorola Solutions, Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$5,439,382	0.6%	Rank history: #30 in FY2022, #11 in FY2023, #14 in FY2024 and not on the FY2025 list; up 249 since FY2020.
36	Elevated Technologies Services, LLC Top agencies VA (Department of Veterans Affairs)	$4,521,700	0.5%	Rank history: #54 in FY2022, #52 in FY2023, #38 in FY2024 and #55 in FY2025; up 47 since FY2020.
37	Validatek-Citi, LLC Top agencies DHS (Department of Homeland Security)	$4,521,443	0.5%	Rank history: #43 in FY2022, #43 in FY2023, #41 in FY2024 and #72 in FY2025; down 20 since FY2020.
38	Tanadgusix Corporation Through TDX Global Solutions, LLC Top agencies Army (Department of the Army)	$4,486,080	0.5%	Rank history: #49 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; up 107 since FY2020.
39	King Technologies, Inc. Top agencies Navy (Department of the Navy)	$4,233,310	0.5%	Rank history: not on the FY2022–FY2025 lists; up 69 since FY2020.
40	Data Link Solutions LLC Top agencies USAF (Department of the Air Force)	$4,177,320	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
41	Orbit Communication Systems Inc Top agencies USAF (Department of the Air Force)	$4,170,118	0.4%	Rank history: #60 in FY2022, not on the FY2023 list, #54 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
42	Cherokee Nation 2 awardees, including Cherokee Nation Management & Consulting, L.l.c.. and Cherokee Federal Solutions, L.L.C. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$4,145,228	0.4%	Rank history: #45 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
43	The Chenega Corporation 2 awardees, including Chenega Tri-Services, LLC and Chenega Facilities Management LLC Top agencies Army (Department of the Army)	$4,105,302	0.4%	Rank history: #47 in FY2022, #55 in FY2023 and not on the FY2024–FY2025 lists; down 11 since FY2020.
44	BAE Systems Land & Armaments L.P. 4 awardees, including BAE Systems Technology Solutions & Services Inc. and BAE Systems Information and Electronic Systems Integration Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$4,023,560	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
45	ABM Industries Inc. 2 awardees, including ABM Electrical Power Solutions LLC Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$4,001,909	0.4%	Rank history: #61 in FY2022, #58 in FY2023, #70 in FY2024 and not on the FY2025 list; up 34 since FY2020.
46	Pen-Link, Ltd Top agencies DOJ (Department of Justice)	$3,962,636	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
47	Oasis Systems, LLC Top agencies Navy (Department of the Navy)	$3,805,000	0.4%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
48	Viasat Inc. 2 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$3,764,423	0.4%	Rank history: #76 in FY2022, #54 in FY2023 and not on the FY2024–FY2025 lists; up 48 since FY2020.
49	Elbit Systems Ltd 2 awardees, including Elbitamerica, Inc. and Elbit Systems of America - Night Vision LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$3,763,264	0.4%	Rank history: #59 in FY2022, #82 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
50	Teledyne Technologies Incorporated 7 awardees, including Teledyne Flir Defense, LLC, Teledyne Defense Electronics, LLC and Teledyne Controls, LLC Top agencies DOT (Department of Transportation) Navy (Department of the Navy) USAF (Department of the Air Force)	$3,747,022	0.4%	Rank history: #24 in FY2022, #17 in FY2023, #11 in FY2024 and #9 in FY2025; down 4 since FY2020.
51	VT Milcom Inc. Top agencies Navy (Department of the Navy)	$3,712,720	0.4%	Rank history: #25 in FY2022, #83 in FY2023 and not on the FY2024–FY2025 lists; down 39 since FY2020.
52	Leonardo S.p.A. 7 awardees, including Laurel Technologies Partnership, DRS Training & Control Systems, LLC and DRS Advanced ISR LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$3,491,639	0.4%	Rank history: #28 in FY2022, #20 in FY2023, #12 in FY2024 and #84 in FY2025; up 30 since FY2020.
53	Trandes Corp Top agencies Navy (Department of the Navy)	$3,233,258	0.3%	Rank history: #67 in FY2022, #70 in FY2023, #47 in FY2024 and #35 in FY2025; down 32 since FY2020.
54	Systems Technology Forum, Ltd. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$3,208,531	0.3%	Rank history: #41 in FY2022, #38 in FY2023, #30 in FY2024 and #37 in FY2025; down 29 since FY2020.
55	Parsons Corporation 3 awardees, including Williams Electric Co Inc., Ptsi Managed Services Inc. and Qrc, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$3,058,620	0.3%	Rank history: not on the FY2022–FY2024 lists and #71 in FY2025; down 6 since FY2020.
56	Flir Systems Inc. 2 awardees, including Teledyne Flir Defense, LLC Top agencies DOT (Department of Transportation) DHS (Department of Homeland Security) Navy (Department of the Navy)	$2,901,139	0.3%	Rank history: #13 in FY2022, #12 in FY2023, #48 in FY2024 and not on the FY2025 list; down 46 since FY2020.
57	Apogee Engineering, LLC Top agencies DHS (Department of Homeland Security)	$2,881,605	0.3%	Rank history: not on the FY2022–FY2025 lists; down 17 since FY2020.
58	DCS Corporation Top agencies Navy (Department of the Navy)	$2,848,416	0.3%	Rank history: #55 in FY2022, #47 in FY2023, #46 in FY2024 and #42 in FY2025; new, not ranked in FY2020.
59	Nve, Inc. Top agencies DLA (Defense Logistics Agency)	$2,721,754	0.3%	Rank history: #66 in FY2022, #60 in FY2023, #62 in FY2024 and #87 in FY2025; down 17 since FY2020.
60	C&C Power Solutions, LLC Top agencies Navy (Department of the Navy)	$2,711,573	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
61	Acorn Growth Companies LLC Through Telecommunication Support Services, Inc. Top agencies USAF (Department of the Air Force)	$2,661,300	0.3%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
62	HP Enterprise Services LLC 2 awardees, including Peraton Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$2,559,325	0.3%	Rank history: #17 in FY2022, #14 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
63	Teradyne Inc. 2 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$2,543,936	0.3%	Rank history: #65 in FY2022, #56 in FY2023, #59 in FY2024 and #53 in FY2025; down 16 since FY2020.
64	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies Navy (Department of the Navy)	$2,484,667	0.3%	Rank history: not on the FY2022–FY2025 lists; down 13 since FY2020.
65	Applied Systems Engineering Inc. Top agencies USAF (Department of the Air Force)	$2,457,264	0.3%	Rank history: not on the FY2022 list, #64 in FY2023, #87 in FY2024 and #51 in FY2025; new, not ranked in FY2020.
66	Huntington Ingalls Industries, Inc. 2 awardees, including HII Mission Technologies Corp and HII Fleet Support Group LLC Top agencies Navy (Department of the Navy)	$2,424,873	0.3%	Rank history: #56 in FY2022, #41 in FY2023, #53 in FY2024 and #33 in FY2025; down 47 since FY2020.
67	Advanced Electronics Company Limited Top agencies USAF (Department of the Air Force)	$2,316,754	0.2%	Rank history: not on the FY2022–FY2024 lists and #73 in FY2025; new, not ranked in FY2020.
68	Nana Regional Corporation Inc Through Affigent, LLC Top agencies DHS (Department of Homeland Security)	$2,185,984	0.2%	Rank history: not on the FY2022–FY2025 lists; up 262 since FY2020.
69	Woods Hole Group Inc. the Top agencies Commerce (Department of Commerce)	$2,096,648	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
70	Louis Berger U.S. Inc. Through Louis Berger Power, LLC Top agencies Army (Department of the Army)	$1,967,144	0.2%	Rank history: not on the FY2022–FY2025 lists; down 43 since FY2020.
71	Shiers Communication Specialists Inc. Top agencies Army (Department of the Army)	$1,800,378	0.2%	Rank history: #62 in FY2022, #85 in FY2023, #74 in FY2024 and #100 in FY2025; down 34 since FY2020.
72	Pacific Electronic Enterprises Inc. Top agencies USAF (Department of the Air Force)	$1,722,229	0.2%	Rank history: #70 in FY2022, #72 in FY2023, #79 in FY2024 and not on the FY2025 list; up 198 since FY2020.
73	Software Information Resource Corp. Top agencies USAF (Department of the Air Force)	$1,685,442	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
74	Dawson Enterprises, Inc. Top agencies Army (Department of the Army)	$1,583,805	0.2%	Rank history: #80 in FY2022, #74 in FY2023 and not on the FY2024–FY2025 lists; up 12 since FY2020.
75	International Business Machines Corporation 2 awardees, including Merge Healthcare Solutions Inc. Top agencies DISA (Defense Information Systems Agency) VA (Department of Veterans Affairs)	$1,545,525	0.2%	Rank history: #50 in FY2022, #37 in FY2023, #66 in FY2024 and #74 in FY2025; new, not ranked in FY2020.
76	L3 Technologies, Inc. Top agencies DHS (Department of Homeland Security)	$1,539,845	0.2%	Rank history: not on the FY2022–FY2025 lists; down 23 since FY2020.
77	Pht Aerospace LLC Top agencies USAF (Department of the Air Force)	$1,533,576	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	Textron Inc. 2 awardees, including Textron Systems Corporation and Able Aerospace Services, Inc. Top agencies USAF (Department of the Air Force)	$1,525,926	0.2%	Rank history: #73 in FY2022, #49 in FY2023, #60 in FY2024 and #39 in FY2025; down 14 since FY2020.
79	Perimeter Security Partners, LP Top agencies USAF (Department of the Air Force)	$1,520,791	0.2%	Rank history: #78 in FY2022, #86 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2020.
80	Photo-Sonics, Inc. Top agencies USAF (Department of the Air Force)	$1,478,040	0.2%	Rank history: not on the FY2022–FY2025 lists; up 331 since FY2020.
81	Siemens Aktiengesellschaft 5 awardees, including Siemens Industry Inc. Top agencies VA (Department of Veterans Affairs) SSA (Social Security Administration) DHS (Department of Homeland Security)	$1,430,369	0.2%	Rank history: #79 in FY2022, #68 in FY2023, not on the FY2024 list and #25 in FY2025; down 27 since FY2020.
82	R. S. Means Company LLC 3 awardees, including Tektronix, Inc., Fluke Electronics Corp and Advanced Sterilization Products Services Inc. Top agencies Commerce (Department of Commerce) Navy (Department of the Navy) VA (Department of Veterans Affairs)	$1,390,602	0.1%	Rank history: not on the FY2022 list, #99 in FY2023, #92 in FY2024 and not on the FY2025 list; down 30 since FY2020.
83	LG Uplus Corp. Top agencies Army (Department of the Army)	$1,377,459	0.1%	Rank history: not on the FY2022–FY2025 lists; down 14 since FY2020.
84	Reliance Construction Management Company Top agencies HHS (Department of Health and Human Services)	$1,319,549	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
85	ABB Inc. 2 awardees Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs)	$1,291,625	0.1%	Rank history: #83 in FY2022, #96 in FY2023 and not on the FY2024–FY2025 lists; down 10 since FY2020.
86	Indyne, Inc. Top agencies Army (Department of the Army)	$1,289,400	0.1%	Rank history: not on the FY2022–FY2025 lists; down 23 since FY2020.
87	Princetel, Inc. Top agencies USAF (Department of the Air Force)	$1,289,288	0.1%	Rank history: #89 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
88	Phia LLC Top agencies DHS (Department of Homeland Security)	$1,288,753	0.1%	Rank history: not on the FY2022–FY2025 lists; up 63 since FY2020.
89	Accelint Global Inc. Top agencies Navy (Department of the Navy)	$1,193,422	0.1%	Rank history: #91 in FY2022, not on the FY2023 list, #81 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
90	Evergreen Fire Alarms LLC Top agencies Army (Department of the Army)	$1,183,972	0.1%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
91	Front Range Construction Inc. Top agencies GSA (General Services Administration)	$1,128,265	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
92	GE Energy Power Conversion USA Inc. Top agencies DHS (Department of Homeland Security)	$1,074,550	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
93	Corelogix Consulting Inc. Top agencies DHS (Department of Homeland Security)	$1,037,850	0.1%	Rank history: #92 in FY2022, #94 in FY2023 and not on the FY2024–FY2025 lists; down 17 since FY2020.
94	Abacus Technology Corporation Top agencies USAF (Department of the Air Force)	$997,166	0.1%	Rank history: not on the FY2022–FY2025 lists; up 3 since FY2020.
95	Amentum Services, Inc. Top agencies Navy (Department of the Navy)	$992,740	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
96	Cobham Advanced Electron 3 awardees, including Frontgrade Technologies Inc., Caes Systems LLC and Mission Systems Orchard Park Inc. Top agencies USAF (Department of the Air Force) Commerce (Department of Commerce) USSOCOM (United States Special Operations Command)	$956,813	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Nasatka Barrier, Incorporated Top agencies USAF (Department of the Air Force)	$947,456	0.1%	Rank history: not on the FY2022–FY2025 lists; up 162 since FY2020.
98	X Technologies, Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$919,054	0.1%	Rank history: not on the FY2022–FY2023 lists, #98 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
99	Penobscot Support Services, LLC Top agencies Commerce (Department of Commerce)	$915,337	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	Advantest Corporation Through Astronics Test Systems Inc. Top agencies USAF (Department of the Air Force)	$913,315	0.1%	Rank history: #86 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 $928 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.

Quick answers