Institutional Ownership
Custom Truck One Source Inc
CUSIP 23204X103COM CL ACTOSQ1 2026
13D / 13G Filings
6
Schedule 13D/13G on record
Beneficial Filers
3
Distinct reporting persons
Largest Stake
69.6%
Max % of class reported
Institutional Holders
164
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
6 filings · latest Oct 21, 2025
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Oct 21, 2025 | Capitol Acquisition Management IV LLC | 13D/A | 2.3% | — | SEC |
| 2 | Feb 3, 2025 | Ecp Controlco, LLC | 13D/A | — | — | SEC |
| 3 | Feb 3, 2025 | Platinum Equity Capital Partners V, L.P. | 13D/A | 69.6% | — | SEC |
| 4 | Dec 23, 2024 | Ecp Controlco, LLC | 13D/A | 7.0% | — | SEC |
| 5 | Dec 10, 2024 | Ecp Controlco, LLC | 13D/A | 8.7% | 20.29M | SEC |
| 6 | Sep 9, 2024 | Ecp Controlco, LLC | 13D/A | 9.9% | 23.38M | SEC |
Top Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Platinum Equity Advisors, LLC/De | 156.74M | $1.03B |
| 2 | Canvas Wealth Advisors, LLC | 7.02M | $46.12M |
| 3 | Mirae Asset Global Etfs Holdings Ltd. | 5.67M | $37.28M |
| 4 | Dimensional Fund Advisors LP | 5.60M | $36.81M |
| 5 | Blackrock, Inc. | 4.25M | $27.94M |
| 6 | Allspring Global Investments Holdings, LLC | 3.91M | $25.91M |
| 7 | Alyeska Investment Group, L.P. | 2.83M | $18.57M |
| 8 | Boston Partners | 2.02M | $13.25M |
| 9 | State Street Corp | 1.49M | $9.76M |
| 10 | Geode Capital Management, LLC | 1.47M | $9.66M |