Top 100 Contractors in PSC 66: Instruments and Laboratory Equipment, Aug 2025–Jul 2026
Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe
The latest 12 months. See the newest fiscal year's list: Top Contractors in PSC 66: Instruments and Laboratory Equipment, FY2025.
The top 10 won 24% of PSC 66 contract dollars from August 2025 through July 2026
Ranking facts
- Contract obligations
- $3,926,066,044 Net of deobligations, by contracts coded PSC 66 or a code under it
- Contractors
- 3,276 Parent companies with an obligation
- Largest contractor
- Leidos Holdings, Inc. $135 million, 3.3% of obligations
- Data as of
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 | $134,893,177 | |||
| 2 | $123,044,810 | |||
| 3 | $107,227,044 | |||
| 4 | $105,478,146 | |||
| 5 | $104,374,964 | |||
| 6 |
Danaher Corporation
|
$94,824,050 | ||
| 7 |
Rapiscan Systems Inc.
|
$86,078,810 | ||
| 8 | $80,538,816 | |||
| 9 | $79,380,281 | |||
| 10 | $78,417,032 | |||
| 11 | $77,609,393 | |||
| 12 | $70,969,600 | |||
| 13 | $70,028,215 | |||
| 14 | $67,461,115 | |||
| 15 | $67,374,278 | |||
| 16 |
Arthrex Inc.
Top agencies
|
$66,589,022 | ||
| 17 |
BAE Systems
|
$56,751,780 | ||
| 18 |
CHG Group Inc
|
$56,534,980 | ||
| 19 |
Roche Holdings Inc.
|
$54,910,642 | ||
| 20 |
Johnson & Johnson
Top agencies
|
$51,805,972 | ||
| 21 | $51,774,335 | |||
| 22 | $48,363,699 | |||
| 23 |
Thermo Fisher Scientific Inc.
|
$44,968,872 | ||
| 24 | $43,435,227 | |||
| 25 | $42,926,663 | |||
| 26 | $32,783,080 | |||
| 27 | $32,351,940 | |||
| 28 |
Total Technology, Inc.
Top agencies
|
$31,972,106 | ||
| 29 | $31,760,098 | |||
| 30 | $30,690,881 | |||
| 31 |
Red One Medical Devices LLC
Top agencies
|
$29,428,710 | ||
| 32 | $27,379,799 | |||
| 33 | $23,442,450 | |||
| 34 | $22,150,000 | |||
| 35 |
Fortive Corporation
|
$19,195,029 | ||
| 36 |
Siemens Corporation
|
$18,794,047 | ||
| 37 | $18,785,367 | |||
| 38 | $18,612,659 | |||
| 39 |
Sysmex America Inc.
|
$18,263,238 | ||
| 40 | $17,982,298 | |||
| 41 |
Henry Schein, Inc.
Top agencies
|
$17,969,866 | ||
| 42 | $17,601,853 | |||
| 43 |
Thales Defense & Security Inc.
|
$17,379,111 | ||
| 44 | $16,898,746 | |||
| 45 | $16,868,509 | |||
| 46 |
Genesis Vision, Inc.
Top agencies
|
$16,225,401 | ||
| 47 |
Rolls-Royce Corporation
|
$15,807,267 | ||
| 48 | $15,792,875 | |||
| 49 |
Vaisala Inc.
|
$15,697,444 | ||
| 50 | $15,549,722 | |||
| 51 | $14,269,848 | |||
| 52 | $14,244,200 | |||
| 53 | $13,728,211 | |||
| 54 | $13,714,148 | |||
| 55 | $13,665,344 | |||
| 56 |
Era Health LLC
Top agencies
|
$13,537,971 | ||
| 57 |
Ortho-Clinical Diagnostics Inc.
|
$12,791,615 | ||
| 58 | $12,542,081 | |||
| 59 |
VWR International LLC
|
$12,383,095 | ||
| 60 |
Zimmer Biomet Holdings Inc.
Top agencies
|
$12,352,200 | ||
| 61 | $12,327,280 | |||
| 62 | $11,767,012 | |||
| 63 | $11,757,138 | |||
| 64 | $11,648,077 | |||
| 65 | $11,462,830 | |||
| 66 | $10,876,416 | |||
| 67 | $10,622,935 | |||
| 68 |
Alliant Enterprises, LLC
Top agencies
|
$10,571,714 | ||
| 69 | $10,401,104 | |||
| 70 | $10,251,042 | |||
| 71 |
Luxfer Magtech Inc.
|
$10,120,934 | ||
| 72 |
Hexagon Manufacturing Intelligence Inc.
|
$9,996,598 | ||
| 73 |
Apiary Medical Inc.
Top agencies
|
$9,960,918 | ||
| 74 |
Rev-Cap Company, Inc.
Top agencies
|
$9,040,303 | ||
| 75 | $9,021,601 | |||
| 76 |
Pendar Technologies LLC
Top agencies
|
$8,883,557 | ||
| 77 | $8,862,620 | |||
| 78 | $8,708,450 | |||
| 79 | $8,480,586 | |||
| 80 | $8,137,338 | |||
| 81 |
Academy Medical Inc.
Top agencies
|
$7,895,971 | ||
| 82 | $7,709,869 | |||
| 83 | $7,569,140 | |||
| 84 | $7,511,697 | |||
| 85 |
Medtronic Inc.
Top agencies
|
$7,424,525 | ||
| 86 | $7,256,026 | |||
| 87 |
Cardinal Point Captains Inc.
Top agencies
|
$7,154,397 | ||
| 88 | $7,122,729 | |||
| 89 | $7,014,822 | |||
| 90 |
Mason Electric Co.
|
$7,003,675 | ||
| 91 | $6,953,522 | |||
| 92 |
S & K Aerospace, LLC
Top agencies
|
$6,951,024 | ||
| 93 | $6,814,244 | |||
| 94 |
Tecan U.S. Group Inc.
|
$6,760,873 | ||
| 95 | $6,726,679 | |||
| 96 |
Buffalo Supply Inc.
Top agencies
|
$6,700,523 | ||
| 97 | $6,666,926 | |||
| 98 |
Nikon Metrology Inc
|
$6,624,805 | ||
| 99 | $6,601,707 | |||
| 100 | $6,551,638 |
Show 75 more
100 of 3,276 contractors listed here. See the rest on GovTribe.
Rankings for the codes under PSC 66
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 $4.08 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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.
- Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
- Rank changes compare with Aug 2024–Jul 2025. "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.
- 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 66 contractors in Aug 2025–Jul 2026?
1. Leidos Holdings, Inc. ($135M), 2. Government Scientific Source Inc. ($123M), 3. Astronics Corporation ($107M), 4. Honeywell International Inc. ($105M), 5. Lockheed Martin Corporation ($104M), 6. Danaher Corporation ($94.8M), 7. Rapiscan Systems Inc. ($86.1M), 8. Technical Communities, Inc. ($80.5M), 9. Northrop Grumman Systems Corporation ($79.4M), 10. L3Harris Technologies, Inc. ($78.4M).
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