Who owns Custom Truck One Source, Inc.?
Institutional ownership of CTOS from SEC Form 13F filings across 132 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
132
13F holders
$543.6M
value, 2026 filers
20.5%
of shares outstanding (46.7M sh)
25
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of CTOS's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 6.2M | $72.7M | 0.1% | 2.7% | +8.5% |
| 2 | Canvas Wealth Advisors, LLC | 6.0M | $70.7M | 9.9% | 2.6% | -14.8% |
| 3 | BlackRock, Inc. | 4.6M | $54.0M | 0.0% | 2% | +7.5% |
| 4 | Allspring Global Investments Holdings, LLC | 2.7M | $29.7M | 0.0% | 1.2% | -31.2% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2.6M | $30.5M | 0.0% | 1.1% | -49.0% |
| 6 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2.2M | $26.0M | 0.0% | 1% | +108.4% |
| 7 | GOLDMAN SACHS GROUP INC | 1.9M | $22.2M | 0.0% | 0.8% | +264.1% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 1.7M | $20.4M | 0.0% | 0.8% | +17.5% |
| 9 | JPMORGAN CHASE & CO | 1.6M | $19.0M | 0.0% | 0.7% | +106.1% |
| 10 | FIRST TRUST ADVISORS LP | 1.5M | $17.8M | 0.0% | 0.7% | +16.1% |
| 11 | MORGAN STANLEY | 1.3M | $14.9M | 0.0% | 0.6% | +40.2% |
| 12 | BANK OF AMERICA CORP /DE/ | 1.2M | $14.1M | 0.0% | 0.5% | -0.2% |
| 13 | Clearbridge Investments, LLC | 1.0M | $11.9M | 0.0% | 0.4% | -28.3% |
| 14 | VANGUARD PORTFOLIO MANAGEMENT LLC | 954,705 | $11.3M | 0.0% | 0.4% | +88.2% |
| 15 | MACKENZIE FINANCIAL CORP | 885,956 | $10.5M | 0.0% | 0.4% | +50.4% |
| 16 | D. E. Shaw & Co., Inc. | 623,637 | $7.4M | 0.0% | 0.3% | +241.2% |
| 17 | NORTHERN TRUST CORP | 607,658 | $7.2M | 0.0% | 0.3% | +24.2% |
| 18 | Russell Investments Group, Ltd. | 529,692 | $6.3M | 0.0% | 0.2% | -2.4% |
| 19 | Sixth Street Partners Management Company, L.P.NEW | 515,084 | $6.1M | 1.1% | 0.2% | new |
| 20 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 515,084 | $6.1M | 0.0% | 0.2% | -0.4% |
| 21 | SILVERCREST ASSET MANAGEMENT GROUP LLC | 509,469 | $6.0M | 0.0% | 0.2% | +29.2% |
| 22 | Walleye Capital LLCNEW | 463,475 | $5.5M | 0.0% | 0.2% | new |
| 23 | VANGUARD FIDUCIARY TRUST CO | 431,711 | $5.1M | 0.0% | 0.2% | +6.7% |
| 24 | CITIGROUP INC | 412,085 | $4.9M | 0.0% | 0.2% | +7.1% |
| 25 | Invesco Ltd. | 354,702 | $4.2M | 0.0% | 0.2% | +45.3% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.