JO
OSG

John Overdeck’s Octave Specialty Group OSG Stock Holding History

John Overdeck’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 		– Sell
-45,044
Closed -$350K – 4564
2025
Q4 		$350K Buy
+45,044
New +$385K ﹤0.01% 3512
2025
Q3 		– Sell
-43,923
Closed -$312K – 3642
2025
Q2 		$312K Sell
43,923
-81,740
-65% -$609K ﹤0.01% 2777
2025
Q1 		$1.1M Sell
125,663
-6,632
-5% -$69.8K ﹤0.01% 2121
2024
Q4 		$1.67M Buy
132,295
+38,540
+41% +$465K ﹤0.01% 1840
2024
Q3 		$1.05M Buy
+93,755
New +$1.1M ﹤0.01% 2090
2021
Q2 		– Sell
-14,960
Closed -$250K – 3996
2021
Q1 		$250K Buy
+14,960
New +$244K ﹤0.01% 3474
2018
Q4 		– Sell
-73,414
Closed -$1.5M – 2946
2018
Q3 		$1.5M Sell
73,414
-11,321
-13% -$236K ﹤0.01% 1684
2018
Q2 		$1.68M Buy
84,735
+48,198
+132% +$890K 0.01% 1756
2018
Q1 		$573K Sell
36,537
-199,463
-85% -$3.08M ﹤0.01% 2391
2017
Q4 		$3.77M Buy
236,000
+204,900
+659% +$3.15M 0.01% 1045
2017
Q3 		$537K Buy
31,100
+3,595
+13% +$66.4K ﹤0.01% 2104
2017
Q2 		$477K Sell
27,505
-33,859
-55% -$602K ﹤0.01% 2370
2017
Q1 		$1.16M Sell
61,364
-12,128
-17% -$255K ﹤0.01% 1827
2016
Q4 		$1.65M Buy
+73,492
New +$1.61M 0.01% 1635
2015
Q4 		– Sell
-12,100
Closed -$175K – 2648
2015
Q3 		$175K Sell
12,100
-3,000
-20% -$48.7K ﹤0.01% 2005
2015
Q2 		$251K Buy
15,100
+1,000
+7% +$23.6K ﹤0.01% 2516
2015
Q1 		$341K Buy
+14,100
New +$359K ﹤0.01% 2197
2014
Q2 		– Sell
-204,753
Closed -$6.35M – 2124
2014
Q1 		$6.35M Buy
+204,753
New +$5.65M 0.03% 544
2013
Q4 		– Sell
-68,933
Closed -$1.25M – 2159
2013
Q3 		$1.25M Buy
+68,933
New +$1.57M 0.01% 940

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
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
PGCM
Prescott Group Capital Management Tulsa, Oklahoma $1.16B AUM 53.61% 1-Year Est. Return
WHCM
Wolf Hill Capital Management Greenwich, Connecticut $1.2B AUM 137.35% 1-Year Est. Return
GJL
Gendell Jeffrey L $11.3B AUM 163.06% 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 $368M AUM 9.33% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return

John Overdeck's OSG Position: Q1 2026 in Review

John Overdeck sold out of Octave Specialty Group (OSG) in Q1 2026, closing a stake of 45,044 shares — an estimated $350K sold.

John Overdeck first reported a position in OSG in Q3 2013 and held it in 19 quarters. The position peaked at $6.35M in Q1 2014. 148 funds tracked by Wall St. Rank hold OSG as of Q1 2026.

  • John Overdeck reported no remaining Octave Specialty Group position as of Q1 2026 after selling out during the quarter.
  • John Overdeck sold 45,044 Octave Specialty Group shares in Q1 2026, an estimated $350K.
  • John Overdeck first reported a position in Octave Specialty Group in Q3 2013 and held it in 19 quarters.
  • John Overdeck's Octave Specialty Group position peaked at $6.35M in Q1 2014.
  • 148 funds tracked by Wall St. Rank held Octave Specialty Group as of Q1 2026.

Based on Two Sigma Investments's 13F filing for Q1 2026, filed 15 May 2026.