Who owns ARCB (ARCB)
Which tracked institutional funds hold ARCB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ARCB company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on ARCB is one-sided between 2025-Q4 and 2026-Q1: 103 added or opened and 35 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
ARCB’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes ARCB more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in ARCB divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 279 tracked filers holding ARCB, 133 increased or opened the position and 126 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in ARCB between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 25
- VANGUARD PORTFOLIO MANAGEMENT LLC$125M
- VANGUARD CAPITAL MANAGEMENT LLC$99M
- Driehaus Capital Management LLC$21M
- MASSACHUSETTS FINANCIAL SERVICES CO /MA/$15M
- VANGUARD FIDUCIARY TRUST CO$14M
- Woodline Partners LP$8M
Full exits 15
- VANGUARD GROUP INC$169M
- Encompass Capital Advisors LLC$20M
- Tensile Capital Management LP$6M
- FAS Wealth Partners, Inc.$5M
- TWO SIGMA ADVISERS, LP$4M
- WINTON GROUP Ltd$3M
Largest adds
- Pacer Advisors, Inc.$99M
- FMR LLC$71M
- AMERICAN CENTURY COMPANIES INC$39M
- DIMENSIONAL FUND ADVISORS LP$37M
- Maple Rock Capital Partners Inc.$29M
- STATE STREET CORP$24M
Largest trims
- ALLIANCEBERNSTEIN L.P.$32M
- LSV ASSET MANAGEMENT$20M
- BlackRock, Inc.$16M
- WESTWOOD HOLDINGS GROUP INC$14M
- NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO$8M
- TWO SIGMA INVESTMENTS, LP$4M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 2,414,238 | $237M | 9.5% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 1,397,287 | $137M | 5.5% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 1,382,114 | $136M | 5.4% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 1,269,241 | $125M | 5.0% | 2026-Q1 |
| FMR LLC added | 1,186,890 | $117M | 4.7% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,005,007 | $99M | 3.9% | 2026-Q1 |
| Pacer Advisors, Inc. added | 2,603,515 | $99M | 3.9% | 2026-Q1 |
| STATE STREET CORP added | 957,682 | $94M | 3.8% | 2026-Q1 |
| Invesco Ltd. trimmed | 787,028 | $77M | 3.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 1,031,140 | $77M | 3.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 569,799 | $56M | 2.2% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 526,139 | $52M | 2.1% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 488,115 | $48M | 1.9% | 2026-Q1 |
| MORGAN STANLEY trimmed | 483,808 | $48M | 1.9% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 471,633 | $46M | 1.9% | 2026-Q1 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 446,949 | $44M | 1.8% | 2026-Q1 |
| Maple Rock Capital Partners Inc. added | 404,346 | $40M | 1.6% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 377,129 | $37M | 1.5% | 2026-Q1 |
| WESTWOOD HOLDINGS GROUP INC trimmed | 365,902 | $36M | 1.4% | 2026-Q1 |
| NORTHERN TRUST CORP added | 315,790 | $31M | 1.2% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 267,923 | $26M | 1.1% | 2026-Q1 |
| Nuveen, LLC trimmed | 239,366 | $24M | 0.9% | 2026-Q1 |
| UBS Group AG added | 234,061 | $23M | 0.9% | 2026-Q1 |
| Allianz Asset Management GmbH added | 233,224 | $23M | 0.9% | 2026-Q1 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. trimmed | 230,735 | $23M | 0.9% | 2026-Q1 |
| Driehaus Capital Management LLC added | 210,343 | $21M | 0.8% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 192,090 | $19M | 0.8% | 2026-Q1 |
| Empowered Funds, LLC added | 158,742 | $16M | 0.6% | 2026-Q1 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ added | 151,226 | $15M | 0.6% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 145,085 | $14M | 0.6% | 2026-Q1 |
| Aberdeen Group plc added | 133,799 | $13M | 0.5% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 139,960 | $13M | 0.5% | 2026-Q1 |
| Rockefeller Capital Management L.P. trimmed | 126,870 | $12M | 0.5% | 2026-Q1 |
| LSV ASSET MANAGEMENT trimmed | 126,300 | $12M | 0.5% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 124,826 | $12M | 0.5% | 2026-Q1 |
| HEARTLAND ADVISORS INC added | 110,000 | $11M | 0.4% | 2026-Q1 |
| WASATCH ADVISORS LP trimmed | 102,575 | $10M | 0.4% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 106,356 | $10M | 0.4% | 2026-Q1 |
| Partners Group Holding AG trimmed | 98,797 | $10M | 0.4% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 96,912 | $10M | 0.4% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 92,521 | $9M | 0.4% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 91,822 | $9M | 0.4% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC trimmed | 84,400 | $8M | 0.3% | 2026-Q1 |
| Woodline Partners LP added | 82,482 | $8M | 0.3% | 2026-Q1 |
| TOWLE & CO trimmed | 80,114 | $8M | 0.3% | 2026-Q1 |
| Public Sector Pension Investment Board added | 79,946 | $8M | 0.3% | 2026-Q1 |
| Pier Capital, LLC new | 79,719 | $8M | 0.3% | 2026-Q1 |
| Allspring Global Investments Holdings, LLC trimmed | 66,196 | $7M | 0.3% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 65,293 | $6M | 0.3% | 2026-Q1 |
| BESSEMER GROUP INC added | 64,931 | $6M | 0.3% | 2026-Q1 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 60,193 | $6M | 0.2% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 57,820 | $6M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 54,737 | $5M | 0.2% | 2026-Q1 |
| Jain Global LLC new | 54,485 | $5M | 0.2% | 2026-Q1 |
| SEI INVESTMENTS CO added | 53,687 | $5M | 0.2% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 52,086 | $5M | 0.2% | 2026-Q1 |
| Legal & General Group Plc trimmed | 52,037 | $5M | 0.2% | 2026-Q1 |
| ExodusPoint Capital Management, LP added | 47,515 | $5M | 0.2% | 2026-Q1 |
| CastleKnight Management LP new | 46,995 | $5M | 0.2% | 2026-Q1 |
| Swiss National Bank | 44,900 | $4M | 0.2% | 2026-Q1 |
| Seven Six Capital Management, LLC trimmed | 42,608 | $4M | 0.2% | 2026-Q1 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO trimmed | 42,233 | $4M | 0.2% | 2026-Q1 |
| Linden Thomas Advisory Services, LLC added | 41,526 | $4M | 0.2% | 2026-Q1 |
| Moody Aldrich Partners LLC added | 35,707 | $4M | 0.1% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 32,852 | $3M | 0.1% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 30,323 | $3M | 0.1% | 2026-Q1 |
| Susquehanna Portfolio Strategies, LLC trimmed | 29,793 | $3M | 0.1% | 2026-Q1 |
| Pullen Investment Management, LLC new | 28,735 | $3M | 0.1% | 2026-Q1 |
| Orchard Capital Management, LLC | 27,564 | $3M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 26,926 | $3M | 0.1% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 26,911 | $3M | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 26,511 | $3M | 0.1% | 2026-Q1 |
| Walleye Capital LLC trimmed | 26,224 | $3M | 0.1% | 2026-Q1 |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM trimmed | 25,681 | $3M | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 25,255 | $2M | 0.1% | 2026-Q1 |
| NORGES BANK trimmed | 33,787 | $2M | 0.1% | 2026-Q1 |
| Inspire Investing, LLC added | 23,903 | $2M | 0.1% | 2026-Q1 |
| AMG National Trust Bank trimmed | 23,764 | $2M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 2,275,383 | $169M | 6.7% | 2025-Q4 stale |
| TURTLE CREEK ASSET MANAGEMENT INC. new | 565,450 | $40M | 1.6% | 2025-Q3 stale |
| MACQUARIE GROUP LTD trimmed | 315,748 | $22M | 0.9% | 2025-Q3 stale |
| Encompass Capital Advisors LLC added | 275,000 | $20M | 0.8% | 2025-Q4 stale |
| Interval Partners, LP added | 232,714 | $18M | 0.7% | 2025-Q2 stale |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 215,733 | $17M | 0.7% | 2025-Q2 stale |
| Ancora Advisors LLC added | 204,587 | $14M | 0.6% | 2025-Q1 stale |
| Zimmer Partners, LP added | 140,000 | $10M | 0.4% | 2025-Q1 stale |
| Granite Investment Partners, LLC trimmed | 106,064 | $7M | 0.3% | 2025-Q1 stale |
| Schonfeld Strategic Advisors LLC added | 86,717 | $7M | 0.3% | 2025-Q2 stale |
| Tensile Capital Management LP new | 81,230 | $6M | 0.2% | 2025-Q4 stale |
| JANE STREET GROUP, LLC added | 85,207 | $6M | 0.2% | 2025-Q3 stale |
| FAS Wealth Partners, Inc. trimmed | 62,899 | $5M | 0.2% | 2025-Q4 stale |
| Trexquant Investment LP added | 57,124 | $4M | 0.2% | 2025-Q3 stale |
| Eisler Capital Management Ltd. trimmed | 54,747 | $4M | 0.2% | 2025-Q1 stale |
| Bastion Asset Management Inc. new | 54,324 | $4M | 0.2% | 2025-Q3 stale |
| TWO SIGMA ADVISERS, LP trimmed | 47,500 | $4M | 0.1% | 2025-Q4 stale |
| MARSHALL WACE, LLP trimmed | 40,408 | $3M | 0.1% | 2025-Q3 stale |
| CAPITAL FUND MANAGEMENT S.A. trimmed | 40,125 | $3M | 0.1% | 2025-Q3 stale |
| WINTON GROUP Ltd trimmed | 35,790 | $3M | 0.1% | 2025-Q4 stale |
| Squarepoint Ops LLC added | 32,348 | $2M | 0.1% | 2025-Q3 stale |
| Engineers Gate Manager LP added | 32,100 | $2M | 0.1% | 2025-Q3 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.