Top 100 Contractors in PSC R707: Contract, Procurement, and Acquisition Support Services, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Riverside Research Institute Through Applied Research Solutions, Inc. Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service)	$177,993,865	11.5%	Rank history: #3 in FY2022, #1 in FY2023, #34 in FY2024 and not on the FY2025 list; up 2 since FY2020.
2	Oasis Systems, LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$159,283,032	10.3%	Rank history: #1 in FY2022, #6 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
3	Rolls-Royce Military Aero Engines Ltd Through Rolls-Royce Corporation Top agencies USAF (Department of the Air Force)	$147,765,360	9.5%	Rank history: #2 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
4	HX5 LLC Top agencies USAF (Department of the Air Force)	$88,255,566	5.7%	Rank history: #4 in FY2022, #11 in FY2023, #4 in FY2024 and #8 in FY2025; up 38 since FY2020.
5	Winnebago Tribe of Nebraska Through HCI Management Services Company Top agencies DOS (Department of State)	$40,083,931	2.6%	Rank history: #11 in FY2022, #7 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
6	Michael Stapleton Associates, Ltd. Top agencies DOS (Department of State)	$38,341,345	2.5%	Rank history: not on the FY2022 list, #15 in FY2023, #7 in FY2024 and #6 in FY2025; up 4 since FY2020.
7	Credence Management Solutions Limited Liability Company Top agencies USAF (Department of the Air Force) DOJ (Department of Justice)	$34,149,925	2.2%	Rank history: #7 in FY2022, #4 in FY2023, #10 in FY2024 and #56 in FY2025; unchanged since FY2020.
8	Science Applications International Corporation Top agencies PBGC (Pension Benefit Guaranty Corporation) Navy (Department of the Navy)	$33,889,978	2.2%	Rank history: #9 in FY2022, #8 in FY2023, #12 in FY2024 and not on the FY2025 list; up 25 since FY2020.
9	Tecolote Research, Inc. Top agencies USAF (Department of the Air Force)	$33,721,296	2.2%	Rank history: #5 in FY2022, #5 in FY2023, #5 in FY2024 and #4 in FY2025; down 4 since FY2020.
10	Medical Science & Computing, LLC Top agencies HHS (Department of Health and Human Services)	$32,286,137	2.1%	Rank history: #8 in FY2022, #9 in FY2023, #19 in FY2024 and not on the FY2025 list; down 1 since FY2020.
11	Odyssey Systems Consulting Group, Ltd. Top agencies USAF (Department of the Air Force)	$27,017,970	1.7%	Rank history: #6 in FY2022, #2 in FY2023, #2 in FY2024 and #14 in FY2025; down 5 since FY2020.
12	Amyx Inc. Top agencies DHA (Defense Health Agency)	$21,743,610	1.4%	Rank history: #12 in FY2022, #17 in FY2023, #20 in FY2024 and not on the FY2025 list; up 14 since FY2020.
13	American Systems Corporation Top agencies DHS (Department of Homeland Security)	$18,348,904	1.2%	Rank history: not on the FY2022 list, #25 in FY2023, #17 in FY2024 and #17 in FY2025; new, not ranked in FY2020.
14	Koniag, Inc. 3 awardees, including Pacarctic, LLC, Koniag Information Security Services LLC and Tuknik Government Services LLC Top agencies DOS (Department of State) DISA (Defense Information Systems Agency) USAID (US Agency for International Development)	$15,607,171	1.0%	Rank history: #15 in FY2022, #18 in FY2023, not on the FY2024 list and #35 in FY2025; up 29 since FY2020.
15	Imsolutions, LLC Top agencies Commerce (Department of Commerce)	$13,913,838	0.9%	Rank history: #10 in FY2022, #13 in FY2023, #15 in FY2024 and not on the FY2025 list; down 1 since FY2020.
16	Unisys Corporation Top agencies Commerce (Department of Commerce)	$13,088,828	0.8%	Rank history: not on the FY2022–FY2025 lists; down 12 since FY2020.
17	Garud Technology Services, Inc. Top agencies DHS (Department of Homeland Security)	$12,717,694	0.8%	Rank history: #18 in FY2022, #16 in FY2023, #18 in FY2024 and #33 in FY2025; up 3 since FY2020.
18	Seventh Sense, LLC Top agencies Commerce (Department of Commerce) HHS (Department of Health and Human Services) DOI (Department of the Interior)	$12,632,337	0.8%	Rank history: #37 in FY2022, #30 in FY2023, #76 in FY2024 and not on the FY2025 list; down 3 since FY2020.
19	Solerity Inc. Through Government Contract Solutions, Inc. Top agencies DOJ (Department of Justice)	$10,827,626	0.7%	Rank history: #27 in FY2022 and not on the FY2023–FY2025 lists; up 43 since FY2020.
20	Palladium International LLC Top agencies USAID (US Agency for International Development)	$10,664,868	0.7%	Rank history: #24 in FY2022, not on the FY2023–FY2024 lists and #21 in FY2025; up 1 since FY2020.
21	Hive Group, LLC Top agencies GSA (General Services Administration)	$10,432,301	0.7%	Rank history: #21 in FY2022, #26 in FY2023, #24 in FY2024 and #49 in FY2025; up 15 since FY2020.
22	Jefferson Consulting Group LLC Top agencies USAID (US Agency for International Development) PBGC (Pension Benefit Guaranty Corporation) USAGM (US Agency for Global Media)	$10,162,204	0.7%	Rank history: #22 in FY2022, #32 in FY2023, #32 in FY2024 and #52 in FY2025; down 10 since FY2020.
23	General Electric Company Top agencies USAF (Department of the Air Force)	$10,000,000	0.6%	Rank history: not on the FY2022–FY2023 lists, #53 in FY2024 and #91 in FY2025; new, not ranked in FY2020.
24	Nakupuna Solutions, LLC Top agencies DOS (Department of State)	$9,998,027	0.6%	Rank history: #13 in FY2022, #10 in FY2023, #6 in FY2024 and #10 in FY2025; up 1 since FY2020.
25	Goodwill of Central and Coastal Virginia, Inc. Through Goodwill Services Inc. Top agencies DLA (Defense Logistics Agency)	$9,359,435	0.6%	Rank history: not on the FY2022 list, #68 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
26	Technology Blue Inc. Top agencies Treasury (Department of the Treasury)	$9,135,056	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
27	Axle Informatics, LLC Top agencies HHS (Department of Health and Human Services)	$8,911,369	0.6%	Rank history: #14 in FY2022, #12 in FY2023, #11 in FY2024 and #11 in FY2025; up 69 since FY2020.
28	Advanced Technology Systems Inc. Through Salient Crgt, Inc. Top agencies PBGC (Pension Benefit Guaranty Corporation)	$8,497,911	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
29	Nathan Associates LLC Top agencies USAID (US Agency for International Development)	$8,017,390	0.5%	Rank history: #23 in FY2022, not on the FY2023–FY2024 lists and #45 in FY2025; new, not ranked in FY2020.
30	Creative Associates International, Inc. Top agencies USAID (US Agency for International Development)	$7,994,000	0.5%	Rank history: #19 in FY2022, #14 in FY2023, #14 in FY2024 and #48 in FY2025; new, not ranked in FY2020.
31	Kepler Research Inc. Top agencies MDA (DOD Missile Defense Agency)	$7,682,391	0.5%	Rank history: #25 in FY2022, #20 in FY2023, #21 in FY2024 and #18 in FY2025; up 59 since FY2020.
32	Design To Delivery Inc. Top agencies Navy (Department of the Navy) GSA (General Services Administration) USDA (Department of Agriculture)	$7,652,126	0.5%	Rank history: #57 in FY2022, #69 in FY2023, #93 in FY2024 and not on the FY2025 list; down 15 since FY2020.
33	Nippon Telegraph and Telephone Corporation Through NTT Data Federal Services, Inc. Top agencies DHS (Department of Homeland Security)	$7,636,745	0.5%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; down 20 since FY2020.
34	Innovative Consulting & Management Services, LLC Top agencies HHS (Department of Health and Human Services)	$7,463,807	0.5%	Rank history: #28 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; down 11 since FY2020.
35	The Arcanum Group, Inc. Top agencies VA (Department of Veterans Affairs)	$7,395,000	0.5%	Rank history: #31 in FY2022, not on the FY2023–FY2024 lists and #69 in FY2025; up 340 since FY2020.
36	Panum Telecom, L.L.C. Top agencies DHS (Department of Homeland Security) USDA (Department of Agriculture)	$7,087,017	0.5%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
37	Stafford Consulting Company, Inc. Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior) PBGC (Pension Benefit Guaranty Corporation)	$7,076,685	0.5%	Rank history: #16 in FY2022, not on the FY2023 list, #31 in FY2024 and #9 in FY2025; up 16 since FY2020.
38	Research Triangle Institute Top agencies USAID (US Agency for International Development)	$6,500,020	0.4%	Rank history: #26 in FY2022 and not on the FY2023–FY2025 lists; up 169 since FY2020.
39	Spectrum Comm Inc. Top agencies USAF (Department of the Air Force)	$6,435,962	0.4%	Rank history: #33 in FY2022 and not on the FY2023–FY2025 lists; down 12 since FY2020.
40	National Opinion Research Center Top agencies USAID (US Agency for International Development)	$6,220,159	0.4%	Rank history: #50 in FY2022 and not on the FY2023–FY2025 lists; up 1 since FY2020.
41	Potomacwave, Inc. Top agencies DHS (Department of Homeland Security)	$5,978,197	0.4%	Rank history: not on the FY2022–FY2025 lists; up 68 since FY2020.
42	OCT Consulting LLC Top agencies USAID (US Agency for International Development) SEC (Securities and Exchange Commission) ED (Department of Education)	$5,649,535	0.4%	Rank history: #72 in FY2022, #35 in FY2023, #46 in FY2024 and #60 in FY2025; up 27 since FY2020.
43	Trust Consulting Services Inc. Top agencies DOT (Department of Transportation) USDA (Department of Agriculture)	$5,603,654	0.4%	Rank history: #41 in FY2022, #36 in FY2023, #44 in FY2024 and #55 in FY2025; down 15 since FY2020.
44	System One Holdings, LLC Through Gap Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$5,531,560	0.4%	Rank history: #32 in FY2022, #23 in FY2023, #49 in FY2024 and not on the FY2025 list; up 102 since FY2020.
45	Competitive Range Solutions LLC Top agencies DISA (Defense Information Systems Agency)	$5,469,402	0.4%	Rank history: #42 in FY2022, #46 in FY2023, #52 in FY2024 and #58 in FY2025; up 3 since FY2020.
46	Integrity Management Consulting, Inc. Top agencies DHS (Department of Homeland Security)	$5,362,724	0.3%	Rank history: #29 in FY2022, #65 in FY2023, #27 in FY2024 and #43 in FY2025; up 4 since FY2020.
47	Martek-Cri JV Top agencies DOI (Department of the Interior)	$5,268,400	0.3%	Rank history: not on the FY2022–FY2025 lists; down 29 since FY2020.
48	Thomas Scientific LLC 2 awardees, including Unison Software Inc. and Unison Marketplace, Inc. Top agencies DOL (Department of Labor) DHS (Department of Homeland Security)	$5,038,679	0.3%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
49	Reservoir International, LLC Top agencies USAF (Department of the Air Force)	$4,928,560	0.3%	Rank history: not on the FY2022–FY2025 lists; down 12 since FY2020.
50	CGI Technologies and Solutions Inc. Through CGI Federal Inc. Top agencies DOS (Department of State)	$4,393,654	0.3%	Rank history: #44 in FY2022, #44 in FY2023 and not on the FY2024–FY2025 lists; down 11 since FY2020.
51	Strategic Insight, Ltd. Top agencies Navy (Department of the Navy)	$4,275,001	0.3%	Rank history: #64 in FY2022, #71 in FY2023, #71 in FY2024 and #63 in FY2025; up 84 since FY2020.
52	Hamilton Enterprises, LLC Top agencies DHA (Defense Health Agency)	$4,205,346	0.3%	Rank history: #49 in FY2022, #52 in FY2023, not on the FY2024 list and #34 in FY2025; down 5 since FY2020.
53	Espire Services, L.l.c Top agencies DOS (Department of State)	$4,188,368	0.3%	Rank history: #60 in FY2022 and not on the FY2023–FY2025 lists; down 18 since FY2020.
54	Cloudburst Consulting Group, Inc. Top agencies USAID (US Agency for International Development)	$4,168,631	0.3%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; up 17 since FY2020.
55	Encompass LLC Top agencies USAID (US Agency for International Development)	$4,082,458	0.3%	Rank history: not on the FY2022–FY2025 lists; up 28 since FY2020.
56	Oak Grove Technologies, LLC Top agencies DOJ (Department of Justice)	$4,066,475	0.3%	Rank history: not on the FY2022 list, #51 in FY2023, #89 in FY2024 and not on the FY2025 list; down 10 since FY2020.
57	DJS Financial Services, LLC Top agencies DHS (Department of Homeland Security) USDA (Department of Agriculture) DOT (Department of Transportation)	$3,684,412	0.2%	Rank history: #56 in FY2022, #75 in FY2023, #59 in FY2024 and #85 in FY2025; down 8 since FY2020.
58	Group W Inc. Top agencies USAF (Department of the Air Force)	$3,674,967	0.2%	Rank history: not on the FY2022–FY2025 lists; down 14 since FY2020.
59	Queen Rania Teacher Academy Top agencies USAID (US Agency for International Development)	$3,628,500	0.2%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
60	Nana Regional Corporation Inc 2 awardees, including Tuva LLC and Rivertech LLC Top agencies DOJ (Department of Justice) DOI (Department of the Interior)	$3,604,428	0.2%	Rank history: not on the FY2022–FY2025 lists; up 197 since FY2020.
61	Deloitte LLP Through Deloitte Consulting LLP Top agencies DHA (Defense Health Agency) PBGC (Pension Benefit Guaranty Corporation)	$3,419,190	0.2%	Rank history: #46 in FY2022, #19 in FY2023 and not on the FY2024–FY2025 lists; down 39 since FY2020.
62	Ingenesis Inc. Through Kelly Services, Inc. Top agencies HHS (Department of Health and Human Services)	$3,401,062	0.2%	Rank history: #38 in FY2022, #22 in FY2023, #51 in FY2024 and not on the FY2025 list; up 76 since FY2020.
63	Falcon Capital Advisors LLC Top agencies HUD (Department of Housing and Urban Development)	$3,399,553	0.2%	Rank history: #69 in FY2022 and not on the FY2023–FY2025 lists; down 18 since FY2020.
64	Voigt Peters Associates LLC Top agencies Commerce (Department of Commerce)	$3,284,000	0.2%	Rank history: #65 in FY2022, #47 in FY2023, #63 in FY2024 and #47 in FY2025; down 9 since FY2020.
65	Acquisition Professionals LLC Top agencies USDA (Department of Agriculture) Commerce (Department of Commerce) HHS (Department of Health and Human Services)	$3,271,178	0.2%	Rank history: #89 in FY2022 and not on the FY2023–FY2025 lists; up 107 since FY2020.
66	KT Consulting, Inc. Top agencies USAF (Department of the Air Force)	$3,264,842	0.2%	Rank history: #63 in FY2022, #57 in FY2023, #60 in FY2024 and #41 in FY2025; up 171 since FY2020.
67	Specpro Management Services, LLC Top agencies USAID (US Agency for International Development)	$3,250,000	0.2%	Rank history: #55 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
68	Washington Business Dynamics, LLC Top agencies OPM (Office of Personnel Management) DSCA (Defense Security Cooperation Agency)	$3,180,993	0.2%	Rank history: #84 in FY2022, #79 in FY2023 and not on the FY2024–FY2025 lists; up 27 since FY2020.
69	Broadleaf, Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$3,043,872	0.2%	Rank history: #61 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; up 17 since FY2020.
70	Dsfederal, Inc. Top agencies HHS (Department of Health and Human Services)	$2,905,000	0.2%	Rank history: not on the FY2022–FY2025 lists; down 10 since FY2020.
71	Z-Tech Solutions, LLC Top agencies DOT (Department of Transportation) SBA (Small Business Administration)	$2,837,178	0.2%	Rank history: #78 in FY2022, not on the FY2023 list, #85 in FY2024 and #73 in FY2025; down 31 since FY2020.
72	Advanced Management Strategies Group, Inc. Top agencies DHA (Defense Health Agency) Navy (Department of the Navy) FTC (Federal Trade Commission)	$2,766,230	0.2%	Rank history: #53 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; up 64 since FY2020.
73	Thermo Electron Corporation Through Fisher Bioservices Inc. Top agencies HHS (Department of Health and Human Services)	$2,721,179	0.2%	Rank history: #80 in FY2022 and not on the FY2023–FY2025 lists; up 231 since FY2020.
74	The Boston Consulting Group Inc Through BCG Federal Corp. Top agencies USAF (Department of the Air Force)	$2,662,500	0.2%	Rank history: not on the FY2022–FY2025 lists; down 23 since FY2020.
75	C W Worldwide Meetings Inc. Top agencies DOS (Department of State)	$2,559,232	0.2%	Rank history: not on the FY2022–FY2025 lists; up 26 since FY2020.
76	Chenega It Enterprise Services, LLC Top agencies DOJ (Department of Justice)	$2,504,986	0.2%	Rank history: not on the FY2022–FY2025 lists; down 6 since FY2020.
77	Culmen International, LLC Top agencies Army (Department of the Army)	$2,406,317	0.2%	Rank history: #59 in FY2022, #43 in FY2023, #56 in FY2024 and #36 in FY2025; down 2 since FY2020.
78	Cnfa Top agencies USAID (US Agency for International Development)	$2,405,000	0.2%	Rank history: #87 in FY2022, #42 in FY2023 and not on the FY2024–FY2025 lists; down 47 since FY2020.
79	Camris International, LLC Top agencies HHS (Department of Health and Human Services)	$2,386,962	0.2%	Rank history: #66 in FY2022, #60 in FY2023, #54 in FY2024 and #79 in FY2025; up 145 since FY2020.
80	CTR Management Group LLC Top agencies GSA (General Services Administration) DOT (Department of Transportation)	$2,353,871	0.2%	Rank history: not on the FY2022–FY2025 lists; up 33 since FY2020.
81	Six Mile, LLC Top agencies DLA (Defense Logistics Agency)	$2,244,389	0.1%	Rank history: not on the FY2022 list, #82 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
82	Martek Global Services, Inc. Top agencies DCSA (Defense Counterintelligence and Security Agency) DOI (Department of the Interior)	$2,175,047	0.1%	Rank history: #43 in FY2022, #62 in FY2023, #58 in FY2024 and #97 in FY2025; up 126 since FY2020.
83	Circuit Media LLC Top agencies DOI (Department of the Interior)	$2,129,568	0.1%	Rank history: not on the FY2022–FY2025 lists; up 41 since FY2020.
84	National Industries for the Blind Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Commerce (Department of Commerce)	$2,120,933	0.1%	Rank history: #20 in FY2022, #73 in FY2023, #39 in FY2024 and #98 in FY2025; down 68 since FY2020.
85	Chenega Enterprise Systems & Solutions, LLC Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$2,073,740	0.1%	Rank history: #51 in FY2022, #63 in FY2023, #79 in FY2024 and not on the FY2025 list; down 7 since FY2020.
86	Marsh & Mclennan Companies Inc. Through Mercer (Us) LLC Top agencies DHA (Defense Health Agency)	$2,071,583	0.1%	Rank history: #94 in FY2022, #50 in FY2023 and not on the FY2024–FY2025 lists; down 25 since FY2020.
87	Information Management Resources, Inc. Top agencies GSA (General Services Administration)	$2,068,604	0.1%	Rank history: #90 in FY2022, #64 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
88	Mitchell Group, Inc. (The) Top agencies HHS (Department of Health and Human Services)	$2,041,983	0.1%	Rank history: #68 in FY2022 and not on the FY2023–FY2025 lists; up 186 since FY2020.
89	Concordant LLC Top agencies DOT (Department of Transportation)	$2,038,082	0.1%	Rank history: #82 in FY2022, #40 in FY2023, #77 in FY2024 and not on the FY2025 list; up 39 since FY2020.
90	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security)	$1,933,510	0.1%	Rank history: #40 in FY2022 and not on the FY2023–FY2025 lists; down 56 since FY2020.
91	Angayut, LLC Top agencies HHS (Department of Health and Human Services)	$1,918,505	0.1%	Rank history: #88 in FY2022, #78 in FY2023, #92 in FY2024 and #78 in FY2025; new, not ranked in FY2020.
92	Zygos Consulting LLC Top agencies DHA (Defense Health Agency)	$1,911,455	0.1%	Rank history: #83 in FY2022, not on the FY2023–FY2024 lists and #42 in FY2025; up 66 since FY2020.
93	MCR LLC Through MCR Federal, LLC Top agencies USAF (Department of the Air Force)	$1,909,222	0.1%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
94	Reli Group Inc. Top agencies DHS (Department of Homeland Security)	$1,854,582	0.1%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
95	Primcorp, LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$1,839,058	0.1%	Rank history: #54 in FY2022 and not on the FY2023–FY2025 lists; down 43 since FY2020.
96	CACI International Inc. 2 awardees, including Caci, Inc. - Federal Top agencies NARA (National Archives and Records Administration) DHA (Defense Health Agency) Army (Department of the Army)	$1,828,676	0.1%	Rank history: #62 in FY2022, #56 in FY2023, #50 in FY2024 and not on the FY2025 list; down 72 since FY2020.
97	Platinum Business Services, LLC Top agencies GSA (General Services Administration)	$1,787,059	0.1%	Rank history: not on the FY2022 list, #59 in FY2023, #91 in FY2024 and not on the FY2025 list; up 82 since FY2020.
98	Compass Point LLC Top agencies DOJ (Department of Justice)	$1,756,542	0.1%	Rank history: #77 in FY2022, #61 in FY2023, not on the FY2024 list and #88 in FY2025; new, not ranked in FY2020.
99	T3W Business Solutions, Inc. Top agencies USAF (Department of the Air Force)	$1,741,941	0.1%	Rank history: #98 in FY2022, #89 in FY2023, #94 in FY2024 and not on the FY2025 list; down 25 since FY2020.
100	Cameo Consulting Group LLC Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior) GSA (General Services Administration)	$1,736,799	0.1%	Rank history: not on the FY2022–FY2023 lists, #30 in FY2024 and not on the FY2025 list; up 30 since 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 $1.55 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 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