CTOS · Custom Truck One Source, Inc. · Shareholders & Ownership
Every disclosed holder of CTOS in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns CTOS
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positionsNo chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 222,738,529 | 98.05% |
| Insiders (Forms 3, 4, 5) | 324,185,527 | 142.70% |
| 13D/G-only blocks | 0 | 0.00% |
| Remaining | 319,750,708 | -140.75% |
| Registered funds (N-PORT, not summed) | 28,510,745 | 12.55% |
Shares outstanding: 227,173,348, the issuer's latest cover-page count restated onto today's split basis.
Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of CTOS
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
|
156,743,635 | ||
| 2 |
Platinum Equity Advisors, LLC/DE
13F
CIK 1803274 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
156,743,635 | ||
| 3 |
|
156,743,635 | ||
| 3.1 |
|
156,743,635 | ||
| 4 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
6,172,555 | ||
| 4.1 |
U.S. SMALL CAP VALUE PORTFOLIO
Fund
S000000987 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
1,026,196 | ||
| 4.2 |
U.S. Targeted Value Portfolio
Fund
S000000970 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
861,292 | ||
| 4.3 |
Dimensional U.S. Targeted Value ETF
Fund
S000070901 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
816,535 | ||
| 4.4 |
Dimensional US Small Cap Value ETF
Fund
S000075151 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
720,834 | ||
| 4.5 |
Dimensional U.S. Small Cap ETF
Fund
S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
582,307 | ||
| 5 |
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
13F
CIK 1705339 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
6,156,876 | ||
| 5.1 |
Global X U.S. Infrastructure Development ETF
Fund
S000056509 · Registered fund · May 31, 2026
GLOBAL X FUNDS, not summed
|
5,631,800 | ||
| 5.2 |
Global X Russell 2000 ETF
Fund
S000085029 · Registered fund · Jul 31, 2026
GLOBAL X FUNDS, not summed
|
29,262 | ||
| 6 |
Canvas Wealth Advisors, LLC
13F
CIK 1858782 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
5,982,649 | ||
| 7 |
|
5,166,178 | ||
| 7.1 |
|
5,159,319 | ||
| 8 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,574,024 | ||
| 8.1 |
iShares Russell 2000 ETF
Fund
S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
1,602,511 | ||
| 8.2 |
iShares Russell 2000 Growth ETF
Fund
S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
485,972 | ||
| 8.3 |
iShares Core S&P Total U.S. Stock Market ETF
Fund
S000004317 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
125,024 | ||
| 8.4 |
Master Small Cap Index Series
Fund
S000002716 · Registered fund · Jun 30, 2026
Quantitative Master Series LLC, not summed
|
114,576 | ||
| 8.5 |
iShares Russell 2000 Value ETF
Fund
S000004342 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
82,521 | ||
| 9 |
Allspring Global Investments Holdings, LLC
13F
CIK 1890906 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,692,878 | ||
| 10 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,578,410 | ||
| 11 |
|
2,540,188 | ||
| 12 |
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
13F
CIK 1164508 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,202,031 | ||
| 13 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,877,617 | ||
| 13.1 |
Goldman Sachs Small Cap Value Insights Fund
Fund
S000014929 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
439,148 | ||
| 13.2 |
Goldman Sachs Small Cap Equity Insights Fund
Fund
S000009329 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
233,594 | ||
| 13.3 |
Goldman Sachs Small Cap Growth Insights Fund
Fund
S000014930 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
92,371 | ||
| 13.4 |
Goldman Sachs Variable Insurance Trust Small Cap Equity Insights Fund
Fund
S000009355 · Registered fund · Jun 30, 2026
Goldman Sachs Variable Insurance Trust, not summed
|
56,795 | ||
| 13.5 |
Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF
Fund
S000048296 · Registered fund · Aug 31, 2026
Goldman Sachs ETF Trust, not summed
|
23,974 | ||
| 14 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,820,142 | ||
| 15 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,727,646 | ||
| 16 |
Alyeska Investment Group, L.P.
13F
CIK 1453072 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,642,331 | ||
| 17 |
Boston Partners
13F
CIK 1386060 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,625,092 | ||
| 18 |
JPMORGAN CHASE & CO
13F
CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,587,319 | ||
| 19 |
|
1,518,554 | ||
| 19.1 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
23,500 | ||
| 19.2 |
State Street Total Return V.I.S. Fund
Fund
S000001637 · Registered fund · Jun 30, 2026
STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
|
1,613 | ||
| 19.3 |
State Street Balanced Index Fund
Fund
S000082802 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
593 | ||
| 20 |
FIRST TRUST ADVISORS LP
13F
CIK 1125816 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,510,931 | ||
| 20.1 |
First Trust Small Cap Growth AlphaDEX Fund
Fund
S000031806 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
743,056 | ||
| 20.2 |
First Trust Small Cap Core AlphaDEX Fund
Fund
S000017339 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
369,320 | ||
| 20.3 |
First Trust Multi Cap Growth AlphaDEX Fund
Fund
S000017343 · Registered fund · Jul 31, 2026
First Trust Exchange-Traded AlphaDEX Fund, not summed
|
67,310 | ||
| 21 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,258,227 | ||
| 21.1 |
E*TRADE No Fee Total Market Index Fund
Fund
S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
|
98 | ||
| 22 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,193,457 | ||
| 23 |
ALGERT GLOBAL LLC
13F
CIK 1275218 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,174,190 | ||
| 24 |
Clearbridge Investments, LLC
13F
CIK 1348883 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,006,418 | ||
| 25 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
954,705 | ||
| 26 |
BRIDGEWAY CAPITAL MANAGEMENT, LLC
13F
CIK 1107261 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
908,125 | ||
| 26.1 |
Omni Small-Cap Value Fund
Fund
S000033567 · Registered fund · Jun 30, 2026
Bridgeway Funds, Inc., not summed
|
35,000 | ||
| 27 |
MACKENZIE FINANCIAL CORP
13F
CIK 919859 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
885,956 | ||
| 28 |
Empowered Funds, LLC
13F
CIK 1592828 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
873,125 | ||
| 28.1 |
EA Bridgeway Omni Small-Cap Value ETF
Fund
S000078089 · Registered fund · Jun 30, 2026
EA Series Trust, not summed
|
873,125 | ||
| 29 |
First Eagle Investment Management, LLC
13F
CIK 1325447 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
861,753 | ||
| 29.1 |
First Eagle Small Cap Opportunity Fund
Fund
S000072438 · Registered fund · Jul 31, 2026
First Eagle Funds, not summed
|
757,230 | ||
| 30 |
ClearBridge Small Cap Fund
Fund
S000036165 · Registered fund · Jul 31, 2026
Legg Mason Global Asset Management Trust, not summed
|
803,795 | ||
| 31 |
AQR CAPITAL MANAGEMENT LLC
13F
CIK 1167557 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
753,989 | ||
| 32 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
700,287 | ||
| 33 |
HEARTLAND ADVISORS INC
13F
CIK 937394 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
700,000 | ||
| 33.1 |
Heartland Value Fund
Fund
S000003523 · Registered fund · Jun 30, 2026
HEARTLAND GROUP INC., not summed
|
700,000 | ||
| 34 |
|
695,984 | ||
| 35 |
INTRINSIC EDGE CAPITAL MANAGEMENT LLC
13F
CIK 1671754 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
685,622 | ||
| 36 |
|
659,942 | ||
| 37 |
D. E. Shaw & Co., Inc.
13F
CIK 1009207 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
623,637 | ||
| 38 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
607,658 | ||
| 38.1 |
Small Cap Index Fund
Fund
S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
31,575 | ||
| 38.2 |
Small Cap Core Fund
Fund
S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
21,421 | ||
| 38.3 |
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund
S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
|
7,693 | ||
| 39 |
Column Small Cap Select Fund
Fund
S000082920 · Registered fund · Aug 31, 2026
Trust for Professional Managers, not summed
|
561,142 | ||
| 40 |
Russell Investments Group, Ltd.
13F
CIK 1692234 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
529,692 | ||
| 40.1 |
U.S. Small Cap Equity Fund
Fund
S000001586 · Registered fund · Jul 31, 2026
RUSSELL INVESTMENT CO, not summed
|
105,414 | ||
| 40.2 |
Multi-Asset Strategy Fund
Fund
S000055522 · Registered fund · Jul 31, 2026
RUSSELL INVESTMENT CO, not summed
|
49,437 | ||
| 40.3 |
U.S. Small Cap Equity Fund
Fund
S000006864 · Registered fund · Jun 30, 2026
RUSSELL INVESTMENT FUNDS, not summed
|
22,958 | ||
| 40.4 |
Multi-Strategy Income Fund
Fund
S000048356 · Registered fund · Jul 31, 2026
RUSSELL INVESTMENT CO, not summed
|
21,653 | ||
| 40.5 |
Russell Investments U.S. Small Cap Equity ETF
Fund
S000089990 · Registered fund · Jun 30, 2026
Russell Investments Exchange Traded Funds, not summed
|
12,847 | ||
| 41 |
|
520,548 | ||
| 42 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
515,084 | ||
| 42.1 |
Schwab U.S. Small-Cap ETF
Fund
S000026636 · Registered fund · Aug 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
298,431 | ||
| 42.2 |
Schwab Small-Cap Index Fund
Fund
S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
149,807 | ||
| 42.3 |
Schwab Total Stock Market Index Fund
Fund
S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
42,302 | ||
| 42.4 |
Schwab U.S. Broad Market ETF
Fund
S000026631 · Registered fund · Aug 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
38,096 | ||
| 43 |
SILVERCREST ASSET MANAGEMENT GROUP LLC
13F
CIK 1232395 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
509,469 | ||
| 44 |
Brighthouse Small Cap Value Portfolio
Fund
S000011105 · Registered fund · Jun 30, 2026
Brighthouse Funds Trust I, not summed
|
479,182 | ||
| 45 |
Federated Hermes MDT Small Cap Growth Fund
Fund
S000012973 · Registered fund · Jul 31, 2026
Federated Hermes MDT Series, not summed
|
468,940 | ||
| 46 |
Walleye Capital LLC
13F
CIK 1758720 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
463,475 | ||
| 47 |
Sendero Wealth Management, LLC
13F
CIK 1639375 · Registered investment adviser · Sep 30, 2026
|
457,766 | ||
| 48 |
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC
13F
CIK 1164833 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
439,840 | ||
| 48.1 |
Hotchkis and Wiley Small Cap Diversified Value Fund
Fund
S000045868 · Registered fund · Jun 30, 2026
HOTCHKIS & WILEY FUNDS/DE/, not summed
|
114,800 | ||
| 49 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
431,711 | ||
| 50 |
|
412,085 |
25 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
Showing 1–50 of 295 holders
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