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ONL

Orion Office REIT
ONL

198 hedge funds and large institutions have $86M invested in Orion Office REIT in 2025 Q3 according to their latest regulatory filings, with 23 funds opening new positions, 33 increasing their positions, 62 reducing their positions, and 34 closing their positions.

New
Increased
Maintained
Reduced
Closed

21% more capital invested

Capital invested by funds: $71.2M → $86M (+$14.8M)

0% more funds holding in top 10

Funds holding in top 10: 1 → 1 (0)

2.94% less ownership

Funds ownership: 59.51% → 56.58% (-2.9%)

6% less funds holding

Funds holding: 211 → 198 (-13)

32% less first-time investments, than exits

New positions opened: 23 | Existing positions closed: 34

47% less repeat investments, than reductions

Existing positions increased: 33 | Existing positions reduced: 62

Holders
198
Holders Change
-13
Holders Change %
-6.16%
% of All Funds
2.6%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
23
Increased
33
Reduced
62
Closed
34
Calls
$36K
Puts
–
Net Calls
+$36K
Net Calls Change
+$9K

Top Buyers

Rank Fund Capital Flow
1
Susquehanna International Group
Susquehanna International Group
Pennsylvania
+$744K
2
Two Sigma Investments
Two Sigma Investments
New York
+$507K
3
Citadel Advisors
Citadel Advisors
Florida
+$473K
4
Marshall Wace
Marshall Wace
United Kingdom
+$270K
5
Two Sigma Advisers
Two Sigma Advisers
New York
+$247K

Top Sellers

Rank Fund Capital Flow
1
Geode Capital Management
Geode Capital Management
Massachusetts
-$892K
2
Mariner
Mariner
Kansas
-$610K
3
HF
HRT Financial
New York
-$526K
4
Millennium Management
Millennium Management
New York
-$395K
5
XT
XTX Topco
Cayman Islands
-$389K
Name Holding Trade Value Shares
Change 		Change in
Stake
SIC
26
Samalin Investment Counsel
New York
$570K -$222K -83,136 -28%
Citadel Advisors
27
Citadel Advisors
Florida
$477K +$473K +176,712 New
Invesco
28
Invesco
Georgia
$424K -$100K -37,551 -19%
Goldman Sachs
29
Goldman Sachs
New York
$348K +$90K +33,642 +35%
Two Sigma Advisers
30
Two Sigma Advisers
New York
$342K +$247K +92,300 +268%
AA
31
ALPS Advisors
Colorado
$282K -$78K -29,178 -22%
Northern Trust
32
Northern Trust
Illinois
$276K -$45.8K -17,111 -14%
Marshall Wace
33
Marshall Wace
United Kingdom
$273K +$270K +100,959 New
Bank of America
34
Bank of America
North Carolina
$257K +$82.8K +30,969 +48%
Qube Research & Technologies (QRT)
35
Qube Research & Technologies (QRT)
United Kingdom
$252K +$173K +64,582 +223%
QOP
36
Quinn Opportunity Partners
Virginia
$245K – – –
Jacobs Levy Equity Management
37
Jacobs Levy Equity Management
New Jersey
$239K -$259K -96,755 -52%
Royal Bank of Canada
38
Royal Bank of Canada
Ontario, Canada
$233K -$329K -122,842 -59%
Asset Management One
39
Asset Management One
Japan
$220K – – –
Fidelity Investments
40
Fidelity Investments
Massachusetts
$185K -$5.32K -1,989 -3%
Nomura Asset Management
41
Nomura Asset Management
Japan
$176K – – –
Stifel Financial
42
Stifel Financial
Missouri
$175K -$8.84K -3,305 -5%
Macquarie Group
43
Macquarie Group
Australia
$171K – – –
Sumitomo Mitsui Trust Group
44
Sumitomo Mitsui Trust Group
Japan
$159K – – –
CM
45
CastleKnight Management
New York
$145K – – –
CSS
46
Cubist Systematic Strategies
Connecticut
$131K -$23.7K -8,857 -15%
AQR Capital Management
47
AQR Capital Management
Connecticut
$129K -$254K -95,087 -67%
Squarepoint
48
Squarepoint
New York
$123K -$70.2K -26,246 -37%
EGM
49
Engineers Gate Manager
New York
$109K -$35.6K -13,309 -25%
MAM
50
Meeder Asset Management
Ohio
$108K – – –
1
2
3 4 5

ONL Hedge Fund Activity: Q3 2025 in Review

198 of the 7,621 institutional investors tracked by Wall St. Rank reported a position in Orion Office REIT (ONL) for Q3 2025, worth a combined $86M — up 21% from $71.2M a quarter earlier.

Sellers outnumbered buyers: 34 funds closed out of ONL and 23 opened new positions — a net loss of 11 holders — while 62 trimmed existing stakes and 33 added.

The largest buyer was Susquehanna International Group, adding an estimated $744K. The largest seller was Geode Capital Management, cutting an estimated $892K.

  • 198 institutional investors held Orion Office REIT (ONL) as of Q3 2025, down from 211 in Q2 2025.
  • Funds reported $86M of Orion Office REIT stock for Q3 2025, up 21% quarter-over-quarter.
  • 23 funds opened new Orion Office REIT positions in Q3 2025 and 34 closed out, a net change of -11 holders.
  • The largest Orion Office REIT buyer in Q3 2025 was Susquehanna International Group, an estimated $744K added.
  • The largest Orion Office REIT seller in Q3 2025 was Geode Capital Management, an estimated $892K sold.

Based on aggregated 13F filings for Q3 2025.