Citadel Advisors
OSG

Citadel Advisors’s Octave Specialty Group OSG Stock Holding History

Citadel Advisors’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 		$154K Sell
33,200
-53,800
-62% -$308K ﹤0.01% 11657
2025
Q4 		$677K Sell
87,000
-5,500
-6% -$47K ﹤0.01% 8276
2025
Q3 		$771K Buy
92,500
+2,400
+3% +$20.3K ﹤0.01% 8111
2025
Q2 		$640K Buy
90,100
+23,200
+35% +$173K ﹤0.01% 8044
2025
Q1 		$585K Sell
66,900
-73,700
-52% -$776K ﹤0.01% 8130
2024
Q4 		$1.78M Sell
140,600
-169,400
-55% -$2.04M ﹤0.01% 5873
2024
Q3 		$3.48M Buy
310,000
+206,000
+198% +$2.41M ﹤0.01% 4536
2024
Q2 		$1.33M Sell
104,000
-38,300
-27% -$584K ﹤0.01% 6066
2024
Q1 		$2.22M Buy
142,300
+27,800
+24% +$438K ﹤0.01% 5327
2023
Q4 		$1.89M Buy
114,500
+47,800
+72% +$665K ﹤0.01% 5462
2023
Q3 		$804K Sell
66,700
-40,900
-38% -$550K ﹤0.01% 7025
2023
Q2 		$1.53M Buy
107,600
+37,400
+53% +$547K ﹤0.01% 5643
2023
Q1 		$1.09M Buy
70,200
+53,700
+325% +$869K ﹤0.01% 6586
2022
Q4 		$288K Sell
16,500
-36,000
-69% -$535K ﹤0.01% 9410
2022
Q3 		$669K Sell
52,500
-16,600
-24% -$221K ﹤0.01% 7833
2022
Q2 		$784K Sell
69,100
-13,800
-17% -$131K ﹤0.01% 7588
2022
Q1 		$862K Buy
82,900
+17,300
+26% +$234K ﹤0.01% 8043
2021
Q4 		$1.05M Sell
65,600
-9,900
-13% -$156K ﹤0.01% 7820
2021
Q3 		$1.08M Buy
75,500
+41,400
+121% +$591K ﹤0.01% 7950
2021
Q2 		$534K Sell
34,100
-8,800
-21% -$141K ﹤0.01% 9923
2021
Q1 		$718K Buy
42,900
+30,400
+243% +$497K ﹤0.01% 8882
2020
Q4 		$192K Buy
+12,500
New +$184K ﹤0.01% 9763
2020
Q3 		– Sell
-22,500
Closed -$322K – 10021
2020
Q2 		$322K Sell
22,500
-22,700
-50% -$332K ﹤0.01% 7796
2020
Q1 		$558K Sell
45,200
-400
-0.9% -$7.67K ﹤0.01% 6284
2019
Q4 		$984K Sell
45,600
-10,400
-19% -$213K ﹤0.01% 5597
2019
Q3 		$1.09M Buy
56,000
+29,100
+108% +$534K ﹤0.01% 5444
2019
Q2 		$453K Buy
26,900
+1,800
+7% +$30.7K ﹤0.01% 6973
2019
Q1 		$455K Sell
25,100
-30,500
-55% -$583K ﹤0.01% 6945
2018
Q4 		$959K Sell
55,600
-23,600
-30% -$433K ﹤0.01% 5372
2018
Q3 		$1.62M Buy
79,200
+40,200
+103% +$839K ﹤0.01% 4753
2018
Q2 		$774K Buy
39,000
+9,000
+30% +$166K ﹤0.01% 5646
2018
Q1 		$470K Buy
30,000
+14,100
+89% +$218K ﹤0.01% 5978
2017
Q4 		$254K Buy
+15,900
New +$245K ﹤0.01% 6718
2017
Q3 		– Sell
-22,500
Closed -$390K – 7482
2017
Q2 		$390K Buy
22,500
+10,600
+89% +$188K ﹤0.01% 5487
2017
Q1 		$224K Sell
11,900
-15,800
-57% -$332K ﹤0.01% 6336
2016
Q4 		$623K Buy
+27,700
New +$605K ﹤0.01% 4558

Other funds holding OSG

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
WSL
Western Standard LLC Los Angeles, California $190M AUM 40.88% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
PGCM
Prescott Group Capital Management Tulsa, Oklahoma $1B AUM 51.95% 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 $616M AUM 45.6% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 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

Citadel Advisors's OSG Position: Q1 2026 in Review

Citadel Advisors 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.

Citadel Advisors 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.

  • Citadel Advisors held 431,809 shares of Octave Specialty Group worth $2.01M as of Q1 2026.
  • Citadel Advisors bought 144,526 Octave Specialty Group shares in Q1 2026, an estimated $827K.
  • Octave Specialty Group made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #6057 holding.
  • Citadel Advisors first reported a position in Octave Specialty Group in Q2 2013 and has held it in 48 quarters since.
  • Citadel Advisors'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.