ONL Institutional Ownership & Shareholders
ORION OFFICE REIT INC (ONL) is currently held by 192 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $77.42M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Private Management Group Inc is currently the largest disclosed institutional shareholder of ONL tracked by InsiderSet, reporting ownership valued at approximately $15.48M in its June 30, 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 $14.41M, representing an estimated loss of -6.92% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 77% of the total disclosed ONL value among the investors covered in this analysis. Major shareholders include Private Management Group Inc, Blackrock, Inc., Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in ORION OFFICE REIT INC (ONL).
This page ranks the largest institutional ONL 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
192
Total Reported Value
$77.42M
Largest Holder
Private Management Group Inc
Largest Position
$15.48M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
95
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Private Management Group Inc | 0.41% | 5,357,303 | $15,482,606 | $14,411,145 | -$1,071,461 | -6.92% | |
| Blackrock, Inc. | 0.00% | 4,377,992 | $12,652,396 | $11,776,798 | -$875,598 | -6.92% | |
| Vanguard Capital Management Llc | 0.00% | 2,427,008 | $7,014,053 | $6,528,652 | -$485,401 | -6.92% | |
| Renaissance Technologies LLC | Jim Simons | 0.01% | 1,865,800 | $5,392,162 | $5,019,002 | -$373,160 | -6.92% |
| Parkwood Llc | 0.31% | 1,490,428 | $4,307,000 | $4,009,251 | -$297,749 | -6.91% | |
| J. Goldman & Co Lp | 0.14% | 1,385,479 | $4,004,034 | $3,726,939 | -$277,095 | -6.92% | |
| Geode Capital Management, Llc | 0.00% | 1,325,780 | $3,832,700 | $3,566,348 | -$266,352 | -6.95% | |
| Rbf Capital, Llc | 0.12% | 1,000,000 | $2,890,000 | $2,690,000 | -$200,000 | -6.92% | |
| Marshall Wace, Llp | 0.00% | 768,187 | $2,220,061 | $2,066,423 | -$153,638 | -6.92% | |
| Two Sigma Investments, Lp | 0.00% | 708,069 | $2,046,319 | $1,904,706 | -$141,613 | -6.92% | |
| Rangeley Capital, Llc | 1.56% | 578,567 | $1,672,059 | $1,556,345 | -$115,714 | -6.92% | |
| State Street Corp | 0.00% | 573,274 | $1,668,227 | $1,542,107 | -$126,120 | -7.56% | |
| Dimensional Fund Advisors Lp | 0.00% | 498,143 | $1,439,741 | $1,340,005 | -$99,736 | -6.93% | |
| Charles Schwab Investment Management Inc | 0.00% | 440,642 | $1,273,455 | $1,185,327 | -$88,128 | -6.92% | |
| Northern Trust Corp | 0.00% | 414,582 | $1,198,142 | $1,115,226 | -$82,916 | -6.92% | |
| Vanguard Portfolio Management Llc | 0.00% | 362,930 | $1,048,868 | $976,282 | -$72,586 | -6.92% | |
| Vanguard Fiduciary Trust Co | 0.00% | 355,312 | $1,026,852 | $955,789 | -$71,063 | -6.92% | |
| Morgan Stanley | 0.00% | 351,644 | $1,016,253 | $945,922 | -$70,331 | -6.92% | |
| Cambria Investment Management, L.P. | 0.05% | 324,418 | $937,568 | $872,684 | -$64,884 | -6.92% | |
| D. E. Shaw & Co., Inc. | 0.00% | 273,373 | $790,048 | $735,373 | -$54,675 | -6.92% | |
| Raymond James Financial Inc | 0.00% | 255,983 | $739,792 | $688,594 | -$51,198 | -6.92% | |
| Goldman Sachs Group Inc | 0.00% | 187,425 | $541,658 | $504,173 | -$37,485 | -6.92% | |
| Gsa Capital Partners Llp | 0.03% | 147,364 | $426,000 | $396,409 | -$29,591 | -6.95% | |
| Bank Of New York Mellon Corp | 0.00% | 131,950 | $381,334 | $354,946 | -$26,389 | -6.92% | |
| Lazard Asset Management Llc | 0.00% | 112,361 | $324,723 | $302,251 | -$22,472 | -6.92% | |
| Nomura Asset Management Co Ltd | 0.00% | 92,200 | $266,458 | $248,018 | -$18,440 | -6.92% | |
| Quinn Opportunity Partners Llc | 0.01% | 90,768 | $262,320 | $244,166 | -$18,154 | -6.92% | |
| Invesco Ltd. | 0.00% | 85,687 | $247,634 | $230,498 | -$17,136 | -6.92% | |
| Deutsche Bank Ag\ | 0.00% | 74,204 | $214,450 | $199,609 | -$14,841 | -6.92% | |
| Engineers Gate Manager Lp | 0.00% | 72,711 | $210,135 | $195,593 | -$14,542 | -6.92% | |
| Nuveen, Llc | 0.00% | 71,944 | $207,918 | $193,529 | -$14,389 | -6.92% | |
| Asset Management One Co., Ltd. | 0.00% | 81,329 | $202,509 | $218,775 | +$16,266 | +8.03% | |
| Lpl Financial Llc | 0.00% | 67,879 | $196,170 | $182,595 | -$13,575 | -6.92% | |
| Jacobs Levy Equity Management, Inc | 0.00% | 62,914 | $181,821 | $169,239 | -$12,582 | -6.92% | |
| Fmr Llc | 0.00% | 58,134 | $168,006 | $156,380 | -$11,626 | -6.92% | |
| Stifel Financial Corp | 0.00% | 54,138 | $156,465 | $145,631 | -$10,834 | -6.92% | |
| Samalin Investment Counsel, Llc | 0.05% | 62,699 | $156,122 | $168,660 | +$12,538 | +8.03% | |
| Wells Fargo & Company/Mn | 0.00% | 53,560 | $154,790 | $144,076 | -$10,714 | -6.92% | |
| Advisors Asset Management, Inc. | 0.00% | 8,188 | $152,870 | $22,026 | -$130,844 | -85.59% | |
| Sumitomo Mitsui Trust Group, Inc. | 0.00% | 56,151 | $139,816 | $151,046 | +$11,230 | +8.03% | |
| Price T Rowe Associates Inc | 0.00% | 44,076 | $128,000 | $118,564 | -$9,436 | -7.37% | |
| Axq Capital, Lp | 0.01% | 41,736 | $120,617 | $112,270 | -$8,347 | -6.92% | |
| Meeder Asset Management Inc | 0.01% | 39,876 | $115,242 | $107,266 | -$7,976 | -6.92% | |
| Mariner, Llc | 0.00% | 39,566 | $114,346 | $106,433 | -$7,913 | -6.92% | |
| Rhumbline Advisers | 0.00% | 39,462 | $114,041 | $106,153 | -$7,888 | -6.92% | |
| Mitsubishi Ufj Asset Management Co., Ltd. | 0.00% | 37,889 | $109,499 | $101,921 | -$7,578 | -6.92% | |
| Susquehanna International Group, Llp | 0.00% | 35,982 | $103,988 | $96,792 | -$7,196 | -6.92% | |
| Bfsg, Llc | 0.01% | 31,283 | $90,408 | $84,151 | -$6,257 | -6.92% | |
| Bank Of America Corp | 0.00% | 30,904 | $89,313 | $83,132 | -$6,181 | -6.92% | |
| State Of Wisconsin Investment Board | 0.00% | 28,400 | $82,076 | $76,396 | -$5,680 | -6.92% |
Frequently asked questions about ONL
Who are the largest institutional holders of ONL?
The largest institutional holders of ONL reported in the latest SEC Form 13F filings include Private Management Group Inc, Blackrock, Inc., Vanguard Capital Management Llc, Renaissance Technologies LLC, and Parkwood Llc. InsiderSet ranks institutional holders by their latest reported ONL position.
What is ONL institutional ownership?
This page tracks ONL positions reported by institutional investment managers through SEC Form 13F. ORION OFFICE REIT INC (ONL) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own ONL?
InsiderSet currently tracks 192 institutional managers reporting ONL holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of ONL shareholders.
How much ONL stock do institutions own?
Institutional investment managers disclosed approximately $77.42M in ONL holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was ONL institutional ownership last updated?
The latest ONL institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional ONL holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its ONL position after the reporting date.
Are institutions buying or selling ONL?
Institutional buying and selling can be analyzed by comparing ONL positions across consecutive 13F reporting periods. InsiderSet's ONL Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View ONL ownership changes.
How has ONL institutional ownership changed over time?
InsiderSet tracks ONL institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.