ORION OFFICE REIT INC (ONL) Institutional Shareholders
ORION OFFICE REIT INC (ONL) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $80.88M in ONL holdings during the latest filing period.
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 $13.07M, representing an estimated loss of -15.57% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 74% 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
190
Total Reported Value
$80.88M
Largest Holder
Private Management Group Inc
Largest Position
$15.48M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
127
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 | $13,071,819 | -$2,410,787 | -15.57% | |
| Blackrock, Inc. | 0.00% | 4,377,992 | $12,652,396 | $10,682,300 | -$1,970,096 | -15.57% | |
| Vanguard Capital Management Llc | 0.00% | 2,427,008 | $7,014,053 | $5,921,900 | -$1,092,153 | -15.57% | |
| Renaissance Technologies LLC | Jim Simons | 0.01% | 1,865,800 | $5,392,162 | $4,552,552 | -$839,610 | -15.57% |
| Parkwood Llc | 0.31% | 1,490,428 | $4,307,000 | $3,636,644 | -$670,356 | -15.56% | |
| J. Goldman & Co Lp | 0.14% | 1,385,479 | $4,004,034 | $3,380,569 | -$623,465 | -15.57% | |
| Geode Capital Management, Llc | 0.00% | 1,325,780 | $3,832,700 | $3,234,903 | -$597,797 | -15.60% | |
| Rbf Capital, Llc | 0.12% | 1,000,000 | $2,890,000 | $2,440,000 | -$450,000 | -15.57% | |
| Marshall Wace, Llp | 0.00% | 768,187 | $2,220,061 | $1,874,376 | -$345,685 | -15.57% | |
| Two Sigma Investments, Lp | 0.00% | 708,069 | $2,046,319 | $1,727,688 | -$318,631 | -15.57% | |
| Rangeley Capital, Llc | 1.56% | 578,567 | $1,672,059 | $1,411,703 | -$260,356 | -15.57% | |
| State Street Corp | 0.00% | 573,274 | $1,668,227 | $1,398,789 | -$269,438 | -16.15% | |
| Dimensional Fund Advisors Lp | 0.00% | 498,143 | $1,439,741 | $1,215,469 | -$224,272 | -15.58% | |
| Charles Schwab Investment Management Inc | 0.00% | 440,642 | $1,273,455 | $1,075,166 | -$198,289 | -15.57% | |
| Northern Trust Corp | 0.00% | 414,582 | $1,198,142 | $1,011,580 | -$186,562 | -15.57% | |
| Vanguard Portfolio Management Llc | 0.00% | 362,930 | $1,048,868 | $885,549 | -$163,319 | -15.57% | |
| Vanguard Fiduciary Trust Co | 0.00% | 355,312 | $1,026,852 | $866,961 | -$159,891 | -15.57% | |
| Morgan Stanley | 0.00% | 351,644 | $1,016,253 | $858,011 | -$158,242 | -15.57% | |
| Cambria Investment Management, L.P. | 0.05% | 324,418 | $937,568 | $791,580 | -$145,988 | -15.57% | |
| D. E. Shaw & Co., Inc. | 0.00% | 273,373 | $790,048 | $667,030 | -$123,018 | -15.57% | |
| Raymond James Financial Inc | 0.00% | 255,983 | $739,792 | $624,599 | -$115,193 | -15.57% | |
| State Of Alaska, Department Of Revenue | 0.01% | 189,310 | $547,000 | $461,916 | -$85,084 | -15.55% | |
| Goldman Sachs Group Inc | 0.00% | 187,425 | $541,658 | $457,317 | -$84,341 | -15.57% | |
| Gsa Capital Partners Llp | 0.03% | 147,364 | $426,000 | $359,568 | -$66,432 | -15.59% | |
| Samalin Investment Counsel, Llc | 0.13% | 143,239 | $413,962 | $349,503 | -$64,459 | -15.57% | |
| Bank Of New York Mellon Corp | 0.00% | 131,950 | $381,334 | $321,958 | -$59,376 | -15.57% | |
| Lazard Asset Management Llc | 0.00% | 112,361 | $324,723 | $274,161 | -$50,562 | -15.57% | |
| Nomura Asset Management Co Ltd | 0.00% | 92,200 | $266,458 | $224,968 | -$41,490 | -15.57% | |
| Quinn Opportunity Partners Llc | 0.01% | 90,768 | $262,320 | $221,474 | -$40,846 | -15.57% | |
| Invesco Ltd. | 0.00% | 85,687 | $247,634 | $209,076 | -$38,558 | -15.57% | |
| Asset Management One Co., Ltd. | 0.00% | 81,329 | $235,041 | $198,443 | -$36,598 | -15.57% | |
| Deutsche Bank Ag\ | 0.00% | 74,204 | $214,450 | $181,058 | -$33,392 | -15.57% | |
| Engineers Gate Manager Lp | 0.00% | 72,711 | $210,135 | $177,415 | -$32,720 | -15.57% | |
| Nuveen, Llc | 0.00% | 71,944 | $207,918 | $175,543 | -$32,375 | -15.57% | |
| Lpl Financial Llc | 0.00% | 67,879 | $196,170 | $165,625 | -$30,545 | -15.57% | |
| Jacobs Levy Equity Management, Inc | 0.00% | 62,914 | $181,821 | $153,510 | -$28,311 | -15.57% | |
| Fmr Llc | 0.00% | 58,134 | $168,006 | $141,847 | -$26,159 | -15.57% | |
| Sumitomo Mitsui Trust Group, Inc. | 0.00% | 56,151 | $162,276 | $137,008 | -$25,268 | -15.57% | |
| Stifel Financial Corp | 0.00% | 54,138 | $156,465 | $132,097 | -$24,368 | -15.57% | |
| Wells Fargo & Company/Mn | 0.00% | 53,560 | $154,790 | $130,686 | -$24,104 | -15.57% | |
| Advisors Asset Management, Inc. | 0.00% | 8,188 | $152,870 | $19,979 | -$132,891 | -86.93% | |
| Price T Rowe Associates Inc | 0.00% | 44,076 | $128,000 | $107,545 | -$20,455 | -15.98% | |
| Axq Capital, Lp | 0.01% | 41,736 | $120,617 | $101,836 | -$18,781 | -15.57% | |
| Meeder Asset Management Inc | 0.01% | 39,876 | $115,242 | $97,297 | -$17,945 | -15.57% | |
| Mariner, Llc | 0.00% | 39,566 | $114,346 | $96,541 | -$17,805 | -15.57% | |
| Rhumbline Advisers | 0.00% | 39,462 | $114,041 | $96,287 | -$17,754 | -15.57% | |
| Mitsubishi Ufj Asset Management Co., Ltd. | 0.00% | 37,889 | $109,499 | $92,449 | -$17,050 | -15.57% | |
| Susquehanna International Group, Llp | 0.00% | 35,982 | $103,988 | $87,796 | -$16,192 | -15.57% | |
| Bfsg, Llc | 0.01% | 31,283 | $90,408 | $76,331 | -$14,077 | -15.57% | |
| Bank Of America Corp | 0.00% | 30,904 | $89,313 | $75,406 | -$13,907 | -15.57% |
Frequently asked questions about ONL
Who owns the most ONL stock?
The largest holders of ONL are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ORION OFFICE REIT INC (ONL).
Is ONL widely held by superinvestors?
Many widely followed stocks like ONL appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ONL is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.