Ken Griffin
OSG

Ken Griffin’s Octave Specialty Group OSG Stock Holding History

Ken Griffin’s Portfolio OSG Stock Details OSG Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$2.01M Buy
431,809
+144,526
+50% +$827K ﹤0.01% 6057
2025
Q4 		$2.24M Buy
287,283
+115,740
+67% +$989K ﹤0.01% 5701
2025
Q3 		$1.43M Sell
171,543
-947,218
-85% -$8M ﹤0.01% 6767
2025
Q2 		$7.94M Buy
1,118,761
+16,039
+1% +$119K ﹤0.01% 3369
2025
Q1 		$9.65M Buy
1,102,722
+723,712
+191% +$7.62M ﹤0.01% 2896
2024
Q4 		$4.79M Sell
379,010
-350,221
-48% -$4.22M ﹤0.01% 4034
2024
Q3 		$8.17M Buy
729,231
+315,991
+76% +$3.7M ﹤0.01% 3220
2024
Q2 		$5.3M Buy
413,240
+220,051
+114% +$3.36M ﹤0.01% 3659
2024
Q1 		$3.02M Sell
193,189
-211,121
-52% -$3.33M ﹤0.01% 4779
2023
Q4 		$6.66M Buy
404,310
+255,812
+172% +$3.56M ﹤0.01% 3402
2023
Q3 		$1.79M Buy
148,498
+88,409
+147% +$1.19M ﹤0.01% 5421
2023
Q2 		$856K Sell
60,089
-8,479
-12% -$124K ﹤0.01% 6784
2023
Q1 		$1.06M Sell
68,568
-248,720
-78% -$4.03M ﹤0.01% 6645
2022
Q4 		$5.53M Buy
317,288
+151,576
+91% +$2.25M ﹤0.01% 3684
2022
Q3 		$2.11M Sell
165,712
-57,188
-26% -$762K ﹤0.01% 5487
2022
Q2 		$2.53M Buy
222,900
+36,233
+19% +$344K ﹤0.01% 5077
2022
Q1 		$1.94M Sell
186,667
-201,549
-52% -$2.73M ﹤0.01% 6146
2021
Q4 		$6.23M Buy
388,216
+253,342
+188% +$3.98M ﹤0.01% 3907
2021
Q3 		$1.93M Buy
134,874
+30,008
+29% +$428K ﹤0.01% 6445
2021
Q2 		$1.64M Buy
104,866
+12,237
+13% +$197K ﹤0.01% 7104
2021
Q1 		$1.55M Buy
92,629
+42,146
+83% +$689K ﹤0.01% 7019
2020
Q4 		$777K Sell
50,483
-148,526
-75% -$2.19M ﹤0.01% 7310
2020
Q3 		$2.54M Buy
199,009
+74,670
+60% +$962K ﹤0.01% 4277
2020
Q2 		$1.78M Buy
124,339
+26,612
+27% +$389K ﹤0.01% 4783
2020
Q1 		$1.21M Buy
+97,727
New +$1.87M ﹤0.01% 4994
2019
Q4 		– Sell
-31,831
Closed -$653K – 9054
2019
Q3 		$622K Sell
31,831
-112,519
-78% -$2.07M ﹤0.01% 6385
2019
Q2 		$2.43M Buy
144,350
+47,319
+49% +$808K ﹤0.01% 4183
2019
Q1 		$1.76M Buy
97,031
+57,413
+145% +$1.1M ﹤0.01% 4678
2018
Q4 		$683K Sell
39,618
-36,415
-48% -$669K ﹤0.01% 5919
2018
Q3 		$1.55M Buy
76,033
+42,646
+128% +$890K ﹤0.01% 4817
2018
Q2 		$663K Buy
33,387
+3,023
+10% +$55.8K ﹤0.01% 5910
2018
Q1 		$476K Buy
30,364
+11,973
+65% +$185K ﹤0.01% 5956
2017
Q4 		$294K Sell
18,391
-69,606
-79% -$1.07M ﹤0.01% 6497
2017
Q3 		$1.52M Buy
87,997
+31,318
+55% +$578K ﹤0.01% 3749
2017
Q2 		$984K Buy
+56,679
New +$1.01M ﹤0.01% 4096
2017
Q1 		– Sell
-58,520
Closed -$1.23M – 7388
2016
Q4 		$1.32M Buy
+58,520
New +$1.28M ﹤0.01% 3470
2016
Q2 		– Sell
-90,897
Closed -$1.44M – 6775
2016
Q1 		$1.44M Sell
90,897
-104,342
-53% -$1.51M ﹤0.01% 3038
2015
Q4 		$2.75M Sell
195,239
-290,284
-60% -$4.46M ﹤0.01% 2423
2015
Q3 		$7.03M Buy
485,523
+181,040
+59% +$2.94M 0.01% 1611
2015
Q2 		$5.07M Buy
304,483
+159,724
+110% +$3.77M ﹤0.01% 2056
2015
Q1 		$3.5M Buy
144,759
+924
+0.6% +$23.5K ﹤0.01% 2414
2014
Q4 		$3.52M Buy
143,835
+100,243
+230% +$2.33M ﹤0.01% 2309
2014
Q3 		$963K Buy
43,592
+14,640
+51% +$344K ﹤0.01% 3742
2014
Q2 		$791K Sell
28,952
-4,029
-12% -$117K ﹤0.01% 3798
2014
Q1 		$1.02M Sell
32,981
-14,560
-31% -$402K ﹤0.01% 3384
2013
Q4 		$1.17M Buy
47,541
+7,284
+18% +$153K ﹤0.01% 3070
2013
Q3 		$730K Sell
40,257
-54,062
-57% -$1.23M ﹤0.01% 3412
2013
Q2 		$2.25M Buy
+94,319
New +$2.29M ﹤0.01% 2382

Other funds holding OSG

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
WSL
Western Standard LLC Los Angeles, California $295M AUM 40.98% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
PGCM
Prescott Group Capital Management Tulsa, Oklahoma $1.16B AUM 53.61% 1-Year Est. Return
WHCM
Wolf Hill Capital Management Greenwich, Connecticut $1.03B AUM 80.44% 1-Year Est. Return
GJL
Gendell Jeffrey L $7.34B AUM 183.72% 1-Year Est. Return
TAM
Third Avenue Management New York $625M AUM 48.93% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
BCC
Bain Capital Credit Boston, Massachusetts $303M AUM 15.47% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

Ken Griffin's OSG Position: Q1 2026 in Review

Ken Griffin increased its Octave Specialty Group (OSG) stake by 50% in Q1 2026, buying an estimated $827K and bringing the position to 431,809 shares worth $2.01M. The position accounts for ﹤0.01% of the portfolio, ranked #6057.

Ken Griffin first reported a position in OSG in Q2 2013 and has held it in 48 quarters since. The position peaked at $9.65M in Q1 2025. 148 funds tracked by Wall St. Rank hold OSG as of Q1 2026.

  • Ken Griffin held 431,809 shares of Octave Specialty Group worth $2.01M as of Q1 2026.
  • Ken Griffin bought 144,526 Octave Specialty Group shares in Q1 2026, an estimated $827K.
  • Octave Specialty Group made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #6057 holding.
  • Ken Griffin first reported a position in Octave Specialty Group in Q2 2013 and has held it in 48 quarters since.
  • Ken Griffin's Octave Specialty Group position peaked at $9.65M in Q1 2025.
  • 148 funds tracked by Wall St. Rank held Octave Specialty Group as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.