Who owns Orion Group Holdings (ORN)
Which tracked institutional funds hold ORN, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ORN company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 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 ORN is one-sided between 2026-Q1 and 2026-Q2: 90 added or opened and 27 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
ORN’s largest tracked holder by dollar value, BRANDES INVESTMENT PARTNERS, LP, sizes it at 0.6% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.6pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ORN 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 2026-Q1 and 2026-Q2, across 254 tracked filers holding ORN, 138 increased or opened the position and 113 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 ORN between the 2026-Q1 and 2026-Q2 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 8
- SG Capital Management LLC$6M
- PANAGORA ASSET MANAGEMENT INC$3M
- Walleye Capital LLC$3M
- TUDOR INVESTMENT CORP ET AL$3M
- BOOTHBAY FUND MANAGEMENT, LLC$2M
- Y-Intercept (Hong Kong) Ltd$1M
Full exits 9
- ACADIAN ASSET MANAGEMENT LLC$5M
- CSM Advisors, LLC$5M
- INGALLS & SNYDER LLC$3M
- Ancora Advisors LLC$2M
- GSA CAPITAL PARTNERS LLP$1M
- THOR INVESTMENT MANAGEMENT INC /OH/ /ADV$1M
Largest adds
- BRANDES INVESTMENT PARTNERS, LP$26M
- BlackRock, Inc.$23M
- WASATCH ADVISORS LP$16M
- ROYCE & ASSOCIATES LP$11M
- VANGUARD CAPITAL MANAGEMENT LLC$10M
- NEXT CENTURY GROWTH INVESTORS LLC$9M
Largest trims
- Invesco Ltd.$9M
- CenterBook Partners LP$3M
- JACOBS LEVY EQUITY MANAGEMENT, INC$3M
- SEI INVESTMENTS CO$2M
- JANE STREET GROUP, LLC$2M
- MARSHALL WACE, LLP$1M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BRANDES INVESTMENT PARTNERS, LP trimmed | 4,914,450 | $83M | 11.0% | 2026-Q2 |
| PZENA INVESTMENT MANAGEMENT LLC added | 4,771,969 | $32M | 4.2% | 2026-Q2 |
| Divisar Capital Management LLC trimmed | 3,384,750 | $22M | 3.0% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 3,202,288 | $21M | 2.8% | 2026-Q2 |
| BlackRock, Inc. added | 3,008,011 | $51M | 6.7% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 2,471,012 | $16M | 2.2% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 2,194,308 | $15M | 1.9% | 2026-Q2 |
| WASATCH ADVISORS LP added | 2,014,110 | $34M | 4.5% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 1,695,318 | $29M | 3.8% | 2026-Q2 |
| Invesco Ltd. added | 1,661,524 | $11M | 1.5% | 2026-Q2 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 1,643,929 | $11M | 1.5% | 2026-Q2 |
| ROYCE & ASSOCIATES LP added | 1,601,034 | $27M | 3.6% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 1,477,688 | $25M | 3.3% | 2026-Q2 |
| MORGAN STANLEY trimmed | 1,321,317 | $9M | 1.2% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 1,284,941 | $9M | 1.1% | 2026-Q2 |
| Harvey Partners, LLC trimmed | 1,190,579 | $8M | 1.1% | 2026-Q2 |
| GENDELL JEFFREY L | 1,104,300 | $19M | 2.5% | 2026-Q2 |
| MACKENZIE FINANCIAL CORP added | 1,008,655 | $7M | 0.9% | 2026-Q2 |
| NEXT CENTURY GROWTH INVESTORS LLC added | 988,549 | $17M | 2.2% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 976,121 | $16M | 2.2% | 2026-Q2 |
| GRACE & WHITE INC /NY trimmed | 812,722 | $14M | 1.8% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 800,223 | $5M | 0.7% | 2026-Q2 |
| STATE STREET CORP added | 784,845 | $13M | 1.8% | 2026-Q2 |
| Minneapolis Portfolio Management Group, LLC trimmed | 752,279 | $5M | 0.7% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 745,243 | $5M | 0.7% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 693,401 | $12M | 1.6% | 2026-Q2 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed | 683,217 | $11M | 1.5% | 2026-Q2 |
| KENNEDY CAPITAL MANAGEMENT LLC trimmed | 677,132 | $11M | 1.5% | 2026-Q2 |
| Quinn Opportunity Partners LLC | 647,563 | $4M | 0.6% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 624,876 | $4M | 0.6% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 613,661 | $4M | 0.5% | 2026-Q2 |
| FIRST WILSHIRE SECURITIES MANAGEMENT INC trimmed | 518,879 | $9M | 1.2% | 2026-Q2 |
| CastleKnight Management LP | 471,941 | $3M | 0.4% | 2026-Q2 |
| Trexquant Investment LP added | 462,128 | $3M | 0.4% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC added | 452,219 | $7M | 0.9% | 2026-Q2 |
| ESSEX INVESTMENT MANAGEMENT CO LLC trimmed | 442,603 | $7M | 1.0% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 437,585 | $7M | 1.0% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 427,959 | $3M | 0.4% | 2026-Q2 |
| De Lisle Partners LLP added | 419,651 | $7M | 0.9% | 2026-Q2 |
| First Pacific Advisors, LP | 417,388 | $3M | 0.4% | 2026-Q2 |
| WESTERLY CAPITAL MANAGEMENT, LLC trimmed | 415,000 | $7M | 0.9% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC trimmed | 408,417 | $3M | 0.4% | 2026-Q2 |
| Simcoe Capital LLC added | 366,441 | $6M | 0.8% | 2026-Q2 |
| SG Capital Management LLC new | 365,177 | $6M | 0.8% | 2026-Q2 |
| Archon Capital Management LLC added | 353,980 | $6M | 0.8% | 2026-Q2 |
| JB CAPITAL PARTNERS LP | 335,000 | $2M | 0.3% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 328,165 | $6M | 0.7% | 2026-Q2 |
| ALGERT GLOBAL LLC added | 323,314 | $5M | 0.7% | 2026-Q2 |
| NORTHERN TRUST CORP added | 320,364 | $5M | 0.7% | 2026-Q2 |
| Voleon Capital Management LP added | 298,712 | $2M | 0.3% | 2026-Q2 |
| Quantinno Capital Management LP added | 286,086 | $2M | 0.3% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 277,035 | $5M | 0.6% | 2026-Q2 |
| UBS Group AG added | 276,309 | $5M | 0.6% | 2026-Q2 |
| FORMULA GROWTH LTD trimmed | 256,633 | $4M | 0.6% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 250,069 | $4M | 0.6% | 2026-Q2 |
| Cruiser Capital Advisors, LLC | 244,104 | $4M | 0.5% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 207,800 | $1M | 0.2% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 207,396 | $3M | 0.5% | 2026-Q2 |
| ARDSLEY ADVISORY PARTNERS LP | 200,000 | $3M | 0.4% | 2026-Q2 |
| Legato Capital Management LLC added | 197,981 | $3M | 0.4% | 2026-Q2 |
| Nuveen, LLC added | 197,213 | $3M | 0.4% | 2026-Q2 |
| IEQ CAPITAL, LLC added | 190,101 | $1M | 0.2% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 178,789 | $3M | 0.4% | 2026-Q2 |
| Qube Research & Technologies Ltd trimmed | 172,769 | $3M | 0.4% | 2026-Q2 |
| Vanguard Global Advisers, LLC added | 172,743 | $1M | 0.2% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 170,245 | $3M | 0.4% | 2026-Q2 |
| Seros Financial, LLC | 168,704 | $3M | 0.4% | 2026-Q2 |
| CenterBook Partners LP trimmed | 165,298 | $3M | 0.4% | 2026-Q2 |
| Walleye Capital LLC added | 160,269 | $3M | 0.4% | 2026-Q2 |
| Creative Planning added | 157,111 | $1M | 0.1% | 2026-Q2 |
| Bank of New York Mellon Corp added | 153,549 | $3M | 0.3% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL new | 149,220 | $3M | 0.3% | 2026-Q2 |
| Russell Investments Group, Ltd. trimmed | 139,326 | $2M | 0.3% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC new | 138,495 | $2M | 0.3% | 2026-Q2 |
| US BANCORP \DE\ trimmed | 135,865 | $2M | 0.3% | 2026-Q2 |
| MERCER GLOBAL ADVISORS INC /ADV added | 134,540 | $892K | 0.1% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 133,480 | $2M | 0.3% | 2026-Q2 |
| Carnegie Lake Advisors LLC trimmed | 129,291 | $857K | 0.1% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 127,627 | $2M | 0.3% | 2026-Q2 |
| LPL Financial LLC added | 117,720 | $2M | 0.3% | 2026-Q2 |
| FMR LLC trimmed | 115,799 | $2M | 0.3% | 2026-Q2 |
| Informed Momentum Co LLC trimmed | 112,703 | $2M | 0.3% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 103,295 | $2M | 0.2% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 96,114 | $2M | 0.2% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 85,402 | $1M | 0.2% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC added | 85,045 | $1M | 0.2% | 2026-Q2 |
| Integrated Quantitative Investments LLC added | 80,557 | $1M | 0.2% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 71,675 | $1M | 0.2% | 2026-Q2 |
| GLOBEFLEX CAPITAL L P | 71,310 | $1M | 0.2% | 2026-Q2 |
| North Star Investment Management Corp. | 70,000 | $1M | 0.2% | 2026-Q2 |
| State of Wyoming added | 69,830 | $1M | 0.2% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 65,259 | $1M | 0.1% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 64,575 | $1M | 0.1% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC trimmed | 61,453 | $1M | 0.1% | 2026-Q2 |
| Harbour Capital Advisors, LLC added | 57,300 | $787K | 0.1% | 2026-Q2 |
| JANE STREET GROUP, LLC trimmed | 55,852 | $939K | 0.1% | 2026-Q2 |
| XTX Topco Ltd trimmed | 54,327 | $914K | 0.1% | 2026-Q2 |
| Y-Intercept (Hong Kong) Ltd added | 52,147 | $877K | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 49,780 | $837K | 0.1% | 2026-Q2 |
| Sanctuary Advisors, LLC added | 47,254 | $795K | 0.1% | 2026-Q2 |
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.