CUSTOM TRUCK ONE SOURCE INC (CTOS) Institutional Shareholders
CUSTOM TRUCK ONE SOURCE INC (CTOS) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $2.62B in CTOS holdings during the latest filing period.
Platinum Equity Advisors, Llc/De is currently the largest disclosed institutional shareholder of CTOS tracked by InsiderSet, reporting ownership valued at approximately $1.85B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $1.65B, representing an estimated loss of -10.84% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 86% of the total disclosed CTOS value among the investors covered in this analysis. Major shareholders include Platinum Equity Advisors, Llc/De, Dimensional Fund Advisors Lp, Mirae Asset Global Etfs Holdings Ltd., and several other long-term asset managers with concentrated positions in CUSTOM TRUCK ONE SOURCE INC (CTOS).
This page ranks the largest institutional CTOS shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
180
Total Reported Value
$2.62B
Largest Holder
Platinum Equity Advisors, Llc/De
Largest Position
$1.85B
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
70
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Platinum Equity Advisors, Llc/De | 20.66% | 156,743,635 | $1,851,142,329 | $1,650,510,477 | -$200,631,852 | -10.84% | |
| Dimensional Fund Advisors Lp | 0.01% | 6,172,555 | $72,900,290 | $64,997,004 | -$7,903,286 | -10.84% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.09% | 6,156,876 | $72,713,927 | $64,831,904 | -$7,882,023 | -10.84% | |
| Canvas Wealth Advisors, Llc | 9.86% | 5,982,649 | $70,655,085 | $62,997,294 | -$7,657,791 | -10.84% | |
| Blackrock, Inc. | 0.00% | 4,574,024 | $54,019,223 | $48,164,473 | -$5,854,750 | -10.84% | |
| Vanguard Capital Management Llc | 0.00% | 2,578,410 | $30,451,022 | $27,150,657 | -$3,300,365 | -10.84% | |
| Allspring Global Investments Holdings, Llc | 0.05% | 2,692,878 | $29,729,373 | $28,356,005 | -$1,373,368 | -4.62% | |
| Arrowstreet Capital, Limited Partnership | 0.01% | 2,202,031 | $26,005,986 | $23,187,386 | -$2,818,600 | -10.84% | |
| Goldman Sachs Group Inc | 0.00% | 1,877,617 | $22,174,656 | $19,771,307 | -$2,403,349 | -10.84% | |
| Geode Capital Management, Llc | 0.00% | 1,727,646 | $20,407,869 | $18,192,112 | -$2,215,757 | -10.86% | |
| Alyeska Investment Group, L.P. | 0.05% | 1,642,331 | $19,395,929 | $17,293,745 | -$2,102,184 | -10.84% | |
| Boston Partners | 0.02% | 1,625,092 | $19,185,028 | $17,112,219 | -$2,072,809 | -10.80% | |
| Jpmorgan Chase & Co | 0.00% | 1,587,319 | $18,968,463 | $16,714,469 | -$2,253,994 | -11.88% | |
| State Street Corp | 0.00% | 1,518,554 | $17,934,123 | $15,990,374 | -$1,943,749 | -10.84% | |
| First Trust Advisors Lp | 0.01% | 1,510,931 | $17,844,095 | $15,910,103 | -$1,933,992 | -10.84% | |
| Morgan Stanley | 0.00% | 1,258,227 | $14,859,662 | $13,249,130 | -$1,610,532 | -10.84% | |
| Bank Of America Corp | 0.00% | 1,193,457 | $14,094,726 | $12,567,102 | -$1,527,624 | -10.84% | |
| Algert Global Llc | 0.16% | 1,174,190 | $13,867,184 | $12,364,221 | -$1,502,963 | -10.84% | |
| Clearbridge Investments, Llc | 0.01% | 1,006,418 | $11,885,796 | $10,597,582 | -$1,288,214 | -10.84% | |
| Vanguard Portfolio Management Llc | 0.00% | 954,705 | $11,275,066 | $10,053,044 | -$1,222,022 | -10.84% | |
| Bridgeway Capital Management, Llc | 0.19% | 908,125 | $10,724,956 | $9,562,556 | -$1,162,400 | -10.84% | |
| Mackenzie Financial Corp | 0.01% | 885,956 | $10,463,140 | $9,329,117 | -$1,134,023 | -10.84% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.02% | 861,753 | $10,177,303 | $9,074,259 | -$1,103,044 | -10.84% |
| Aqr Capital Management Llc | 0.00% | 753,989 | $8,904,609 | $7,939,504 | -$965,105 | -10.84% | |
| Heartland Advisors Inc | 0.37% | 700,000 | $8,267,000 | $7,371,000 | -$896,000 | -10.84% | |
| Intrinsic Edge Capital Management Llc | 1.00% | 685,622 | $8,097,196 | $7,219,600 | -$877,596 | -10.84% | |
| D. E. Shaw & Co., Inc. | 0.00% | 623,637 | $7,365,153 | $6,566,898 | -$798,255 | -10.84% | |
| Northern Trust Corp | 0.00% | 607,658 | $7,176,442 | $6,398,639 | -$777,803 | -10.84% | |
| Russell Investments Group, Ltd. | 0.01% | 529,692 | $6,255,672 | $5,577,657 | -$678,015 | -10.84% | |
| Charles Schwab Investment Management Inc | 0.00% | 515,084 | $6,083,142 | $5,423,835 | -$659,307 | -10.84% | |
| Sixth Street Partners Management Company, L.P. | 0.00% | 515,084 | $6,083,142 | $5,423,835 | -$659,307 | -10.84% | |
| Silvercrest Asset Management Group Llc | 0.04% | 509,469 | $6,016,829 | $5,364,709 | -$652,120 | -10.84% | |
| Walleye Capital Llc | 0.03% | 463,475 | $5,473,640 | $4,880,392 | -$593,248 | -10.84% | |
| Empowered Funds, Llc | 0.03% | 810,115 | $5,322,456 | $8,530,511 | +$3,208,055 | +60.27% | |
| Hotchkis & Wiley Capital Management Llc | 0.02% | 439,840 | $5,194,510 | $4,631,515 | -$562,995 | -10.84% | |
| Vanguard Fiduciary Trust Co | 0.00% | 431,711 | $5,098,507 | $4,545,917 | -$552,590 | -10.84% | |
| Citigroup Inc | 0.00% | 412,085 | $4,866,724 | $4,339,255 | -$527,469 | -10.84% | |
| Invesco Ltd. | 0.00% | 354,702 | $4,189,031 | $3,735,012 | -$454,019 | -10.84% | |
| Efg International Ag | 0.07% | 344,458 | $4,066,328 | $3,627,143 | -$439,185 | -10.80% | |
| Voleon Capital Management Lp | 0.07% | 342,120 | $4,040,437 | $3,602,524 | -$437,913 | -10.84% | |
| Bnp Paribas Financial Markets | 0.00% | 321,210 | $3,793,490 | $3,382,341 | -$411,149 | -10.84% | |
| Federated Hermes, Inc. | 0.01% | 296,020 | $3,495,996 | $3,117,091 | -$378,905 | -10.84% | |
| Y.D. More Investments Ltd | 0.09% | 254,500 | $3,005,645 | $2,679,885 | -$325,760 | -10.84% | |
| Sendero Wealth Management, Llc | 0.28% | 390,797 | $2,567,537 | $4,115,092 | +$1,547,555 | +60.27% | |
| Gilder Gagnon Howe & Co Llc | 0.03% | 216,872 | $2,561,258 | $2,283,662 | -$277,596 | -10.84% | |
| Sei Investments Co | 0.00% | 215,771 | $2,548,261 | $2,272,069 | -$276,192 | -10.84% | |
| Occudo Quantitative Strategies Lp | 0.13% | 200,573 | $2,368,767 | $2,112,034 | -$256,733 | -10.84% | |
| Mariner, Llc | 0.00% | 190,057 | $2,244,586 | $2,001,300 | -$243,286 | -10.84% | |
| Point72 Asset Management, L.P. | 0.00% | 179,100 | $2,115,171 | $1,885,923 | -$229,248 | -10.84% | |
| Register Financial Advisors Llc | 0.62% | 170,200 | $2,010,062 | $1,792,206 | -$217,856 | -10.84% |
Frequently asked questions about CTOS
Who owns the most CTOS stock?
The largest holders of CTOS are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for CUSTOM TRUCK ONE SOURCE INC (CTOS).
Is CTOS widely held by superinvestors?
Many widely followed stocks like CTOS appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly CTOS is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.