CUSTOM TRUCK ONE SOURCE INC (CTOS) Top 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 March 31, 2026. The institutional investors covered on this page collectively reported approximately $1.43B 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 $1.03B in its March 31, 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 $1.66B, representing an estimated gain of +61.49% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 88% of the total disclosed CTOS value among the investors covered in this analysis. Major shareholders include Platinum Equity Advisors, Llc/De, Canvas Wealth Advisors, Llc, 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
167
Total Reported Value
$1.43B
Largest Holder
Platinum Equity Advisors, Llc/De
Largest Position
$1.03B
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
192
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 | 11.60% | 156,743,635 | $1,029,805,682 | $1,663,049,967 | +$633,244,285 | +61.49% | |
| Canvas Wealth Advisors, Llc | 7.84% | 7,019,526 | $46,118,286 | $74,477,171 | +$28,358,885 | +61.49% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.05% | 5,674,918 | $37,282,158 | $60,210,880 | +$22,928,722 | +61.50% | |
| Dimensional Fund Advisors Lp | 0.01% | 5,602,838 | $36,805,568 | $59,446,111 | +$22,640,543 | +61.51% | |
| Blackrock, Inc. | 0.00% | 4,252,972 | $27,942,027 | $45,124,033 | +$17,182,006 | +61.49% | |
| Allspring Global Investments Holdings, Llc | 0.04% | 3,914,133 | $25,911,561 | $41,528,951 | +$15,617,390 | +60.27% | |
| Alyeska Investment Group, L.P. | 0.05% | 2,825,820 | $18,565,637 | $29,981,950 | +$11,416,313 | +61.49% | |
| Vanguard Capital Management Llc | 0.00% | 2,525,744 | $16,594,138 | $26,798,144 | +$10,204,006 | +61.49% | |
| Boston Partners | 0.01% | 2,016,406 | $13,247,944 | $21,394,068 | +$8,146,124 | +61.49% | |
| State Street Corp | 0.00% | 1,486,051 | $9,763,355 | $15,767,001 | +$6,003,646 | +61.49% | |
| Geode Capital Management, Llc | 0.00% | 1,470,636 | $9,664,328 | $15,603,448 | +$5,939,120 | +61.45% | |
| Clearbridge Investments, Llc | 0.01% | 1,403,965 | $9,224,050 | $14,896,069 | +$5,672,019 | +61.49% | |
| First Trust Advisors Lp | 0.01% | 1,301,351 | $8,549,876 | $13,807,334 | +$5,257,458 | +61.49% | |
| Bank Of America Corp | 0.00% | 1,195,836 | $7,856,643 | $12,687,820 | +$4,831,177 | +61.49% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 1,056,550 | $6,941,534 | $11,209,996 | +$4,268,462 | +61.49% | |
| Heartland Advisors Inc | 0.34% | 1,000,000 | $6,570,000 | $10,610,000 | +$4,040,000 | +61.49% | |
| Morgan Stanley | 0.00% | 897,525 | $5,896,739 | $9,522,740 | +$3,626,001 | +61.49% | |
| Intrinsic Edge Capital Management Llc | 1.05% | 879,622 | $5,779,117 | $9,332,789 | +$3,553,672 | +61.49% | |
| Bridgeway Capital Management, Llc | 0.11% | 845,115 | $5,552,406 | $8,966,670 | +$3,414,264 | +61.49% | |
| Empowered Funds, Llc | 0.03% | 810,115 | $5,322,456 | $8,595,320 | +$3,272,864 | +61.49% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.01% | 765,822 | $5,031,450 | $8,125,371 | +$3,093,921 | +61.49% |
| Jane Street Group, Llc | 0.00% | 660,534 | $4,339,708 | $7,008,266 | +$2,668,558 | +61.49% | |
| Aqr Capital Management Llc | 0.00% | 650,700 | $4,275,098 | $6,903,927 | +$2,628,829 | +61.49% | |
| Mackenzie Financial Corp | 0.00% | 589,100 | $3,870,387 | $6,250,351 | +$2,379,964 | +61.49% | |
| Russell Investments Group, Ltd. | 0.00% | 542,865 | $3,566,623 | $5,759,798 | +$2,193,175 | +61.49% | |
| Charles Schwab Investment Management Inc | 0.00% | 517,411 | $3,399,390 | $5,489,731 | +$2,090,341 | +61.49% | |
| Goldman Sachs Group Inc | 0.00% | 515,735 | $3,388,379 | $5,471,948 | +$2,083,569 | +61.49% | |
| Vanguard Portfolio Management Llc | 0.00% | 507,309 | $3,333,020 | $5,382,548 | +$2,049,528 | +61.49% | |
| Northern Trust Corp | 0.00% | 489,076 | $3,213,229 | $5,189,096 | +$1,975,867 | +61.49% | |
| Hotchkis & Wiley Capital Management Llc | 0.01% | 452,640 | $2,973,845 | $4,802,510 | +$1,828,665 | +61.49% | |
| Vanguard Fiduciary Trust Co | 0.00% | 404,548 | $2,657,880 | $4,292,254 | +$1,634,374 | +61.49% | |
| Silvercrest Asset Management Group Llc | 0.02% | 394,416 | $2,591,313 | $4,184,754 | +$1,593,441 | +61.49% | |
| Sendero Wealth Management, Llc | 0.28% | 390,797 | $2,567,537 | $4,146,356 | +$1,578,819 | +61.49% | |
| Citigroup Inc | 0.00% | 384,712 | $2,527,558 | $4,081,794 | +$1,554,236 | +61.49% | |
| Efg International Ag | 0.05% | 351,001 | $2,306,077 | $3,724,121 | +$1,418,044 | +61.49% | |
| Private Capital Management, Llc | 0.22% | 327,500 | $2,151,675 | $3,474,775 | +$1,323,100 | +61.49% | |
| Citadel Advisors Llc | 0.00% | 280,361 | $1,841,972 | $2,974,630 | +$1,132,658 | +61.49% | |
| Millennium Management Llc | 0.00% | 257,825 | $1,693,910 | $2,735,523 | +$1,041,613 | +61.49% | |
| Invesco Ltd. | 0.00% | 244,105 | $1,603,769 | $2,589,954 | +$986,185 | +61.49% | |
| Point72 Asset Management, L.P. | 0.00% | 242,189 | $1,591,182 | $2,569,625 | +$978,443 | +61.49% | |
| Tudor Investment Corp Et Al | 0.01% | 228,518 | $1,501,363 | $2,424,576 | +$923,213 | +61.49% | |
| Sei Investments Co | 0.00% | 227,568 | $1,495,114 | $2,414,496 | +$919,382 | +61.49% | |
| Voleon Capital Management Lp | 0.03% | 220,174 | $1,446,543 | $2,336,046 | +$889,503 | +61.49% | |
| Gilder Gagnon Howe & Co Llc | 0.02% | 217,877 | $1,431,452 | $2,311,675 | +$880,223 | +61.49% | |
| D. E. Shaw & Co., Inc. | 0.00% | 182,785 | $1,200,897 | $1,939,349 | +$738,452 | +61.49% | |
| Trexquant Investment Lp | 0.01% | 179,371 | $1,178,467 | $1,903,126 | +$724,659 | +61.49% | |
| Register Financial Advisors Llc | 0.42% | 171,200 | $1,124,784 | $1,816,432 | +$691,648 | +61.49% | |
| Mariner, Llc | 0.00% | 168,207 | $1,104,656 | $1,784,676 | +$680,020 | +61.56% | |
| Bank Of New York Mellon Corp | 0.00% | 156,242 | $1,026,511 | $1,657,728 | +$631,217 | +61.49% | |
| Nuveen, Llc | 0.00% | 149,991 | $985,441 | $1,591,405 | +$605,964 | +61.49% |
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.