Mariner
ONL

Mariner’s Orion Office REIT ONL Stock Holding History

Mariner’s Portfolio ONL Stock Details ONL Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$114K Sell
39,566
-20,378
-34% -$55.8K ﹤0.01% 3310
2026
Q1 		$129K Sell
59,944
-71,875
-55% -$166K ﹤0.01% 3276
2025
Q4 		$298K Sell
131,819
-96,570
-42% -$228K ﹤0.01% 2852
2025
Q3 		$617K Sell
228,389
-227,999
-50% -$610K ﹤0.01% 2263
2025
Q2 		$972K Buy
456,388
+359,954
+373% +$686K ﹤0.01% 1808
2025
Q1 		$206K Sell
96,434
-168,180
-64% -$587K ﹤0.01% 2981
2024
Q4 		$982K Buy
264,614
+148,223
+127% +$583K ﹤0.01% 1660
2024
Q3 		$466K Buy
116,391
+5,060
+5% +$19.8K ﹤0.01% 2187
2024
Q2 		$400K Buy
111,331
+19,060
+21% +$65.3K ﹤0.01% 2227
2024
Q1 		$324K Buy
92,271
+54,128
+142% +$243K ﹤0.01% 2371
2023
Q4 		$218K Buy
+38,143
New +$199K ﹤0.01% 2622
2022
Q4 		– Sell
-11,209
Closed -$98K – 2808
2022
Q3 		$98K Buy
+11,209
New +$115K ﹤0.01% 2210

Other funds holding ONL

PMG
Private Management Group Irvine, California $3.8B AUM 23.19% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
PL
Parkwood LLC Cleveland, Ohio $1.4B AUM 33.21% 1-Year Est. Return
JGC
J. Goldman & Co New York $3.87B AUM 46.92% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
RC
RBF Capital San Francisco, California $2.41B AUM 39.41% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Mariner's ONL Position: Q2 2026 in Review

Mariner reduced its Orion Office REIT (ONL) stake by 34% in Q2 2026, selling an estimated $55.8K and leaving 39,566 shares worth $114K. The position accounts for ﹤0.01% of the portfolio, ranked #3310.

Mariner first reported a position in ONL in Q3 2022 and has held it in 12 quarters since. The position peaked at $982K in Q4 2024. 196 funds tracked by Wall St. Rank hold ONL as of Q2 2026.

  • Mariner held 39,566 shares of Orion Office REIT worth $114K as of Q2 2026.
  • Mariner sold 20,378 Orion Office REIT shares in Q2 2026, an estimated $55.8K.
  • Orion Office REIT made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #3310 holding.
  • Mariner first reported a position in Orion Office REIT in Q3 2022 and has held it in 12 quarters since.
  • Mariner's Orion Office REIT position peaked at $982K in Q4 2024.
  • 196 funds tracked by Wall St. Rank held Orion Office REIT as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.