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CTOS · Custom Truck One Source, Inc. · Holdings

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$9.11 +0.07 (+0.77%) At close · Sep 11
Market Cap
$2.07B
Shares
227.51M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 187
Total Value: $2,629,122,632
Total Shares: 222,667,055
Showing 1–100 of 188 holdings by value · page 1 of 2

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 187 13F filers · Δ vs Mar 31, 2026
Top Holder
70.4%
Sep 2023 → Jun 2026 · range 66.8% – 73.4%
−1.2 pts
Top 5
80.7%
Sep 2023 → Jun 2026 · range 80.7% – 86.2%
−1.2 pts
Top 10
85.7%
Sep 2023 → Jun 2026 · range 85.7% – 91.3%
−2.1 pts
HHI
4,995
Sep 2023 → Jun 2026 · range 4,566 – 5,430
Highly concentrated−168

Quarterly Activity

vs Mar 31, 2026
New
34
Increased
78
Decreased
57
Sold Out
22
Unchanged
18
Holder count: +12
Institutional value: +82.8%
Shares held: +1.7%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 188
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1709682 CUSIP 23204X103 13F (30d) 65 filings 64 filers Visit website Investor relations