Skip to main content
CTOS logo

CTOS · Custom Truck One Source, Inc. · Shareholders & Ownership

Track CTOS — free
$10.77 +0.26 (+2.47%) At close · Oct 28 Q3 2026 earnings call transcript
Market Cap
$2.39B
Shares
227.17M
Volume · Oct 28 1.6M Avg daily vol (3M) 1.03M

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 positions

No 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
1
PE One Source Holdings, LLC
Insider CIK 1855018 · Jan 30, 2025
10% Owner, issuer-wide
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
PLATINUM EQUITY, LLC
13D CIK 1228754 · Unknown · Jan 30, 2025
not summed
156,743,635
3.1
PLATINUM EQUITY LLC
Insider CIK 1228754 · Jan 30, 2025
Director, issuer-wide
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
EIN MARK
Insider CIK 1246840 · Mar 31, 2026
Director, issuer-wide
5,166,178
7.1
EIN MARK
13D CIK 1246840 · Unknown · Oct 17, 2025
Item 4 purpose: Other
not summed
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
Ross Fredrick M. Jr.
Insider CIK 1851369 · Apr 1, 2026
Director, issuer-wide
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
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
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
McMonagle Ryan
Insider CIK 1851380 · Apr 1, 2026
Director, Chief Executive Officer, issuer-wide
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
Ross Joe P.
Insider CIK 1852519 · Apr 1, 2026
President - Sales, issuer-wide
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
Heinberg Marshall A
Insider CIK 1481338 · Mar 31, 2026
Director, issuer-wide
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
CITIGROUP INC
13F CIK 831001 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
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

Create a free account to page through every holder, filter by source and group by ultimate parent.

Key facts CIK 1709682 CUSIP 23204X103 13F (30d) 28 filings 28 filers Visit website Investor relations