Top 100 Contractors in PSC R424: Expert Witness, FY2022

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Georgia TECH Research Corp Through Georgia TECH Applied Research Corp Top agencies USAF (Department of the Air Force)	$42,228,724	12.7%	Rank history: #1 in FY2021, #1 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2021.
2	Analysis Group Inc. Top agencies DOJ (Department of Justice) Treasury (Department of the Treasury) FTC (Federal Trade Commission)	$18,642,761	5.6%	Rank history: #2 in FY2021, #7 in FY2023, #4 in FY2024 and #6 in FY2025; unchanged since FY2021.
3	The Brattle Group Inc. 2 awardees Top agencies DOE (Department of Energy) DOJ (Department of Justice) FTC (Federal Trade Commission)	$17,170,278	5.2%	Rank history: #6 in FY2021, #5 in FY2023, #5 in FY2024 and #3 in FY2025; up 3 since FY2021.
4	HKA Global LLC Through The Kenrich Group, LLC Top agencies Army (Department of the Army)	$14,180,912	4.3%	Rank history: #5 in FY2021, #4 in FY2023, not on the FY2024 list and #46 in FY2025; up 1 since FY2021.
5	Bates White, LLC Top agencies Treasury (Department of the Treasury) DOJ (Department of Justice) FTC (Federal Trade Commission)	$12,892,739	3.9%	Rank history: #8 in FY2021, #6 in FY2023, #2 in FY2024 and #2 in FY2025; up 3 since FY2021.
6	CRA International, Inc. Top agencies DOJ (Department of Justice) FTC (Federal Trade Commission) Treasury (Department of the Treasury)	$8,937,932	2.7%	Rank history: #4 in FY2021, #2 in FY2023, #7 in FY2024 and #20 in FY2025; down 2 since FY2021.
7	Cornerstone Research Inc. Top agencies FTC (Federal Trade Commission) Treasury (Department of the Treasury) DOJ (Department of Justice)	$4,340,516	1.3%	Rank history: #3 in FY2021, #3 in FY2023, #3 in FY2024 and #14 in FY2025; down 4 since FY2021.
8	Ocean Tomo, LLC 2 awardees, including Veris Consulting, LLC Top agencies Navy (Department of the Navy) DOJ (Department of Justice) Treasury (Department of the Treasury)	$4,275,929	1.3%	Rank history: #22 in FY2021 and not on the FY2023–FY2025 lists; up 14 since FY2021.
9	RER Solutions, Inc. Top agencies Treasury (Department of the Treasury)	$4,141,559	1.2%	Rank history: #19 in FY2021, not on the FY2023–FY2024 lists and #31 in FY2025; up 10 since FY2021.
10	Keystone Strategy LLC 2 awardees Top agencies FTC (Federal Trade Commission) DOJ (Department of Justice)	$3,895,080	1.2%	Rank history: not on the FY2021 list, #40 in FY2023, #13 in FY2024 and #8 in FY2025; up 93 since FY2021.
11	FTI Consulting, Inc. 2 awardees, including Compass Lexecon LLC Top agencies GSA (General Services Administration) SEC (Securities and Exchange Commission) FTC (Federal Trade Commission)	$3,613,280	1.1%	Rank history: #7 in FY2021, #9 in FY2023, #6 in FY2024 and #5 in FY2025; down 4 since FY2021.
12	Duff & Phelps LLC Through Kroll, LLC Top agencies Treasury (Department of the Treasury) SEC (Securities and Exchange Commission)	$3,467,031	1.0%	Rank history: #20 in FY2021 and not on the FY2023–FY2025 lists; up 8 since FY2021.
13	Beacon Group, LLC Top agencies Navy (Department of the Navy) DOJ (Department of Justice)	$3,433,445	1.0%	Rank history: #28 in FY2021, #15 in FY2023, #11 in FY2024 and #27 in FY2025; up 15 since FY2021.
14	Morgan, Angel, Brigham & Associates L.L.C. Top agencies DOJ (Department of Justice)	$3,379,749	1.0%	Rank history: #13 in FY2021, #21 in FY2023, #16 in FY2024 and #9 in FY2025; down 1 since FY2021.
15	Gordian Litigation Solutions Group, Inc. Top agencies USAF (Department of the Air Force)	$3,240,123	1.0%	Rank history: #9 in FY2021, #26 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2021.
16	J.s. Held LLC Top agencies DOJ (Department of Justice) SEC (Securities and Exchange Commission)	$3,149,136	0.9%	Rank history: #72 in FY2021, #17 in FY2023, #65 in FY2024 and #35 in FY2025; up 56 since FY2021.
17	Union Station Venture, Ltd. Through JLL Valuation & Advisory Services, LLC Top agencies DOJ (Department of Justice) Treasury (Department of the Treasury)	$3,027,066	0.9%	Rank history: not on the FY2021 list, #19 in FY2023, #78 in FY2024 and not on the FY2025 list; up 110 since FY2021.
18	Litcon Group LLC Top agencies DOJ (Department of Justice) Navy (Department of the Navy)	$2,830,091	0.8%	Rank history: #11 in FY2021, #20 in FY2023, #14 in FY2024 and #21 in FY2025; down 7 since FY2021.
19	SRK Consulting (U.S.), Inc. Top agencies Treasury (Department of the Treasury)	$2,725,059	0.8%	Rank history: #74 in FY2021, #11 in FY2023 and not on the FY2024–FY2025 lists; up 55 since FY2021.
20	Gnss Solutions Ltd Top agencies Army (Department of the Army)	$2,657,097	0.8%	Rank history: #37 in FY2021, #36 in FY2023 and not on the FY2024–FY2025 lists; up 17 since FY2021.
21	Integra FEC LLC Top agencies SEC (Securities and Exchange Commission)	$2,501,323	0.8%	Rank history: #18 in FY2021, #18 in FY2023, #20 in FY2024 and #34 in FY2025; down 3 since FY2021.
22	Mccarty Appraisal Company LLC Top agencies DOJ (Department of Justice)	$2,218,410	0.7%	Rank history: not on the FY2021 list, not on the FY2023 list, #86 in FY2024 and not on the FY2025 list; new.
23	ABZ Inc. Top agencies DOJ (Department of Justice)	$2,157,316	0.6%	Rank history: #23 in FY2021, #27 in FY2023, #92 in FY2024 and not on the FY2025 list; unchanged since FY2021.
24	Industrial Economics Inc. Top agencies DOJ (Department of Justice)	$2,017,424	0.6%	Rank history: #14 in FY2021, #12 in FY2023, #21 in FY2024 and #42 in FY2025; down 10 since FY2021.
25	Alixpartners LLP Top agencies SEC (Securities and Exchange Commission) DOJ (Department of Justice) DOL (Department of Labor)	$1,983,778	0.6%	Rank history: #40 in FY2021 and not on the FY2023–FY2025 lists; up 15 since FY2021.
26	Sellers Realty, LLC Top agencies Treasury (Department of the Treasury)	$1,940,140	0.6%	Rank history: not on the FY2021 list, #16 in FY2023, #43 in FY2024 and #23 in FY2025; up 461 since FY2021.
27	Infoedge Technology, Inc. Top agencies DOS (Department of State)	$1,780,000	0.5%	Rank history: #26 in FY2021, #23 in FY2023, #17 in FY2024 and #18 in FY2025; down 1 since FY2021.
28	Delta Consulting Group Inc. Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs)	$1,738,458	0.5%	Rank history: #38 in FY2021, #54 in FY2023, #54 in FY2024 and not on the FY2025 list; up 10 since FY2021.
29	Secretariat Economists LLC Top agencies DOJ (Department of Justice) FTC (Federal Trade Commission)	$1,615,317	0.5%	Rank history: #34 in FY2021, #70 in FY2023, #15 in FY2024 and not on the FY2025 list; up 5 since FY2021.
30	Accumyn LLC Top agencies Treasury (Department of the Treasury)	$1,599,350	0.5%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 72 since FY2021.
31	CACI International Inc. Through Caci, LLC - Commercial Top agencies DOJ (Department of Justice)	$1,513,853	0.5%	Rank history: not on the FY2021 list, not on the FY2023 list, #22 in FY2024 and not on the FY2025 list; new.
32	Berkeley Research Group, LLC Top agencies DOJ (Department of Justice) CFTC (Commodity Futures Trading Commission) SEC (Securities and Exchange Commission)	$1,507,620	0.5%	Rank history: #21 in FY2021, #8 in FY2023, #8 in FY2024 and #7 in FY2025; down 11 since FY2021.
33	Barber and Mann Inc. Top agencies Treasury (Department of the Treasury)	$1,474,131	0.4%	Rank history: not on the FY2021 list, #38 in FY2023, #32 in FY2024 and #17 in FY2025; up 132 since FY2021.
34	Lampl / Herbert Consultants, Inc. Top agencies Treasury (Department of the Treasury)	$1,456,443	0.4%	Rank history: not on the FY2021 list, #55 in FY2023, #28 in FY2024 and not on the FY2025 list; up 91 since FY2021.
35	Stagg Resource Consultants, Inc. Top agencies Treasury (Department of the Treasury)	$1,418,616	0.4%	Rank history: not on the FY2021 list, #32 in FY2023, not on the FY2024 list and #19 in FY2025; new.
36	Marsh & Mclennan Companies Inc. Through National Economic Research Associates Inc. Top agencies Treasury (Department of the Treasury)	$1,405,237	0.4%	Rank history: not on the FY2021 list, #22 in FY2023, #18 in FY2024 and #15 in FY2025; up 65 since FY2021.
37	Deloitte LLP 2 awardees, including Deloitte Financial Advisory Services LLP and Deloitte & Touche LLP Top agencies DOJ (Department of Justice)	$1,370,841	0.4%	Rank history: #32 in FY2021, #57 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2021.
38	Pem-Iei JV LLP Top agencies DOL (Department of Labor)	$1,319,327	0.4%	Rank history: #30 in FY2021 and not on the FY2023–FY2025 lists; down 8 since FY2021.
39	Bursztajn, Harold J MD Top agencies DOJ (Department of Justice)	$1,198,926	0.4%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
40	Secretariat Advisors LLC Top agencies DOJ (Department of Justice) DOL (Department of Labor)	$1,142,550	0.3%	Rank history: not on the FY2021 list, not on the FY2023–FY2024 lists and #40 in FY2025; up 78 since FY2021.
41	Ankura Holdings, LP Through Ankura Consulting Group, LLC Top agencies SEC (Securities and Exchange Commission) DOE (Department of Energy)	$1,080,918	0.3%	Rank history: #53 in FY2021, #25 in FY2023, #58 in FY2024 and not on the FY2025 list; up 12 since FY2021.
42	Jab Innovative Solutions LLC Top agencies DOL (Department of Labor)	$1,073,254	0.3%	Rank history: #35 in FY2021 and not on the FY2023–FY2025 lists; down 7 since FY2021.
43	Madison Consulting Group, Inc. Top agencies Treasury (Department of the Treasury)	$1,059,515	0.3%	Rank history: #56 in FY2021, #77 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2021.
44	Stout Risius Ross, LLC Top agencies DOJ (Department of Justice) SEC (Securities and Exchange Commission) Treasury (Department of the Treasury)	$1,042,597	0.3%	Rank history: #24 in FY2021, #60 in FY2023, #46 in FY2024 and #30 in FY2025; down 20 since FY2021.
45	Environmental Research Incorporated Top agencies DOJ (Department of Justice)	$1,021,656	0.3%	Rank history: not on the FY2021 list, #58 in FY2023, #37 in FY2024 and not on the FY2025 list; up 59 since FY2021.
46	Togiak Management Services, LLC Top agencies Treasury (Department of the Treasury)	$980,000	0.3%	Rank history: not on the FY2021 list, #59 in FY2023, not on the FY2024 list and #56 in FY2025; new.
47	Stoneturn Group LLP Top agencies SEC (Securities and Exchange Commission) DOJ (Department of Justice)	$917,062	0.3%	Rank history: #66 in FY2021, #29 in FY2023, #68 in FY2024 and not on the FY2025 list; up 19 since FY2021.
48	964218 Ontario Limited Through W.f. Baird & Associates Ltd. Top agencies DOJ (Department of Justice)	$815,596	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 59 since FY2021.
49	Wolf Water Resources Inc. Top agencies DOJ (Department of Justice)	$813,142	0.2%	Rank history: #16 in FY2021, #61 in FY2023, #89 in FY2024 and not on the FY2025 list; down 33 since FY2021.
50	Hemming Morse, LLC Top agencies SEC (Securities and Exchange Commission) DOJ (Department of Justice)	$804,669	0.2%	Rank history: not on the FY2021 list, #80 in FY2023, not on the FY2024 list and #59 in FY2025; new.
51	TAC Insurance Consulting, LLC Top agencies Treasury (Department of the Treasury)	$799,365	0.2%	Rank history: #91 in FY2021, #50 in FY2023, #45 in FY2024 and not on the FY2025 list; up 40 since FY2021.
52	Pritchett, Ball & Wise, Inc. Top agencies Treasury (Department of the Treasury)	$795,797	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 267 since FY2021.
53	Resolution Economics Group, LLC Top agencies Navy (Department of the Navy) DOJ (Department of Justice)	$775,031	0.2%	Rank history: #36 in FY2021 and not on the FY2023–FY2025 lists; down 17 since FY2021.
54	Gradco LLC Top agencies DOJ (Department of Justice)	$774,005	0.2%	Rank history: #68 in FY2021, #41 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2021.
55	Credibility International LLC Top agencies DOS (Department of State) DOJ (Department of Justice)	$757,500	0.2%	Rank history: not on the FY2021 list, not on the FY2023 list, #66 in FY2024 and not on the FY2025 list; new.
56	Evans Water Resources Engineering PLLC Top agencies DOJ (Department of Justice)	$756,840	0.2%	Rank history: #48 in FY2021, #98 in FY2023, not on the FY2024 list and #75 in FY2025; down 8 since FY2021.
57	Horst Frisch Inc. Top agencies Treasury (Department of the Treasury)	$756,400	0.2%	Rank history: #33 in FY2021 and not on the FY2023–FY2025 lists; down 24 since FY2021.
58	BDO USA LLP 2 awardees, including BDO Public Sector, LLC Top agencies DOJ (Department of Justice)	$749,166	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 65 since FY2021.
59	Risk Assessment Corporation Top agencies DOJ (Department of Justice)	$738,500	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
60	Kleinschmidt Associates Top agencies DOJ (Department of Justice)	$698,933	0.2%	Rank history: not on the FY2021 list, #52 in FY2023 and not on the FY2024–FY2025 lists; new.
61	Banner & Witcoff Ltd Top agencies SEC (Securities and Exchange Commission)	$630,000	0.2%	Rank history: #39 in FY2021, not on the FY2023 list, #79 in FY2024 and not on the FY2025 list; down 22 since FY2021.
62	MTC Consulting LLC Top agencies Treasury (Department of the Treasury)	$626,482	0.2%	Rank history: not on the FY2021 list, #74 in FY2023 and not on the FY2024–FY2025 lists; new.
63	Chess Consulting LLC Top agencies DOJ (Department of Justice)	$621,588	0.2%	Rank history: #65 in FY2021, #67 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2021.
64	Monument Economics Group LLC Top agencies DOJ (Department of Justice) CFTC (Commodity Futures Trading Commission)	$617,078	0.2%	Rank history: #57 in FY2021 and not on the FY2023–FY2025 lists; down 7 since FY2021.
65	Capital Project Management, Inc. Top agencies Army (Department of the Army) DOJ (Department of Justice) Navy (Department of the Navy)	$613,463	0.2%	Rank history: #27 in FY2021, #42 in FY2023, #27 in FY2024 and #13 in FY2025; down 38 since FY2021.
66	FPS Energy Consulting LLC Top agencies DOE (Department of Energy)	$599,300	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
67	Complete Discovery Source Inc. Top agencies Army (Department of the Army)	$593,871	0.2%	Rank history: not on the FY2021 list, #30 in FY2023 and not on the FY2024–FY2025 lists; up 74 since FY2021.
68	Russell, David T Top agencies Treasury (Department of the Treasury)	$588,388	0.2%	Rank history: not on the FY2021 list, #72 in FY2023 and not on the FY2024–FY2025 lists; up 43 since FY2021.
69	Garland Actuarial LLC Top agencies DOJ (Department of Justice) Treasury (Department of the Treasury)	$587,812	0.2%	Rank history: #60 in FY2021 and not on the FY2023–FY2025 lists; down 9 since FY2021.
70	Eastern Research Group Inc. Top agencies DOJ (Department of Justice)	$565,568	0.2%	Rank history: not on the FY2021 list, not on the FY2023 list, #100 in FY2024 and not on the FY2025 list; up 186 since FY2021.
71	Gary L. Fischler & Associates LLC Top agencies DOJ (Department of Justice)	$561,466	0.2%	Rank history: #84 in FY2021 and not on the FY2023–FY2025 lists; up 13 since FY2021.
72	Engineering Systems Inc. Top agencies DOJ (Department of Justice) CPSC (Consumer Product Safety Commission)	$556,807	0.2%	Rank history: not on the FY2021 list, not on the FY2023 list, #69 in FY2024 and #50 in FY2025; up 67 since FY2021.
73	PG Environmental, LLC Top agencies DOJ (Department of Justice)	$553,678	0.2%	Rank history: not on the FY2021 list, #89 in FY2023 and not on the FY2024–FY2025 lists; new.
74	Principia Digita Inc. Top agencies Treasury (Department of the Treasury)	$550,960	0.2%	Rank history: not on the FY2021 list, not on the FY2023 list, #49 in FY2024 and not on the FY2025 list; new.
75	Analytic Focus LLC Top agencies DOJ (Department of Justice) Treasury (Department of the Treasury)	$550,567	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
76	Munzing Timothy Top agencies DOJ (Department of Justice)	$543,252	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 74 since FY2021.
77	Kapilamukamal, LLP Top agencies SEC (Securities and Exchange Commission) CFTC (Commodity Futures Trading Commission)	$502,297	0.2%	Rank history: #75 in FY2021, not on the FY2023–FY2024 lists and #76 in FY2025; down 2 since FY2021.
78	Gary D Kronrad PHD Top agencies DOJ (Department of Justice)	$500,000	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
79	Rimkus Consulting Group, Inc. 2 awardees, including Rimkus Analytics, L.L.C. Top agencies MDA (DOD Missile Defense Agency) DOJ (Department of Justice)	$497,273	0.1%	Rank history: not on the FY2021 list, #75 in FY2023, #94 in FY2024 and not on the FY2025 list; up 140 since FY2021.
80	Robson Forensic Inc. Top agencies DOJ (Department of Justice)	$493,046	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
81	SIA Partners U.S. Inc. Top agencies Treasury (Department of the Treasury)	$482,816	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
82	Lamont Financial Services Corp Top agencies DOJ (Department of Justice)	$482,550	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
83	SAF Mining Consulting LLC Top agencies Treasury (Department of the Treasury)	$475,282	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
84	Tankersley Michael Top agencies Treasury (Department of the Treasury)	$451,223	0.1%	Rank history: not on the FY2021 list, #78 in FY2023, not on the FY2024 list and #36 in FY2025; new.
85	Ircos, LLC Top agencies DOJ (Department of Justice) Treasury (Department of the Treasury)	$449,540	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 221 since FY2021.
86	Davis & Hosfield Consulting LLC Top agencies SEC (Securities and Exchange Commission)	$445,500	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
87	Marianne R Wolk Top agencies SEC (Securities and Exchange Commission)	$432,250	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
88	S & S Realty Associates Inc. Top agencies Treasury (Department of the Treasury)	$431,093	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
89	Henry Spencer Banzhaf Top agencies DOJ (Department of Justice)	$431,044	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 17 since FY2021.
90	Natural Resources Consulting Engineers, Inc. Top agencies DOJ (Department of Justice)	$423,916	0.1%	Rank history: #41 in FY2021, #66 in FY2023, #31 in FY2024 and #45 in FY2025; down 49 since FY2021.
91	Argianas & Associates Inc. Top agencies DOJ (Department of Justice)	$423,659	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
92	Global Economics Group, LLC Top agencies SEC (Securities and Exchange Commission) FTC (Federal Trade Commission)	$422,182	0.1%	Rank history: #31 in FY2021, #49 in FY2023, #57 in FY2024 and #33 in FY2025; down 61 since FY2021.
93	M.b. Main Enterprise LLC Top agencies Treasury (Department of the Treasury)	$420,962	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 331 since FY2021.
94	Driggers Commercial Group, Inc. Top agencies Treasury (Department of the Treasury)	$419,914	0.1%	Rank history: not on the FY2021 list, #76 in FY2023, not on the FY2024 list and #61 in FY2025; up 298 since FY2021.
95	B. Riley Financial, Inc. 2 awardees, including Glassratner Advisory & Capital Group LLC Top agencies DOJ (Department of Justice)	$418,435	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
96	Parity Compliance Advisors LLC Top agencies DOL (Department of Labor)	$417,625	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 17 since FY2021.
97	Forensic Environmental Services Inc. Top agencies DOJ (Department of Justice)	$412,065	0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #81 in FY2024 and not on the FY2025 list; up 108 since FY2021.
98	L.C. Lee & Associates, Inc. Top agencies DOJ (Department of Justice)	$409,530	0.1%	Rank history: #86 in FY2021 and not on the FY2023–FY2025 lists; down 12 since FY2021.
99	Innovest Portfolio Solutions LLC Top agencies DOL (Department of Labor)	$406,500	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
100	Insight Economics LLC Top agencies DOJ (Department of Justice)	$400,000	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 70 since FY2021.

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 $333 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 2022 ran Oct 1, 2021 – Sep 30, 2022. 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 FY2021. "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 FY2021 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