Marshall Wace
OSG

Marshall Wace’s Octave Specialty Group OSG Stock Holding History

Marshall Wace’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
Q2 		$3.76M Sell
601,796
-463,539
-44% -$2.41M ﹤0.01% 1515
2026
Q1 		$4.95M Buy
1,065,335
+316,763
+42% +$1.81M ﹤0.01% 1311
2025
Q4 		$5.82M Buy
748,572
+293,498
+64% +$2.51M 0.01% 1085
2025
Q3 		$3.8M Sell
455,074
-193,081
-30% -$1.63M ﹤0.01% 1306
2025
Q2 		$4.6M Buy
648,155
+442,750
+216% +$3.3M 0.01% 1181
2025
Q1 		$1.8M Sell
205,405
-61,534
-23% -$648K ﹤0.01% 1508
2024
Q4 		$3.38M Sell
266,939
-97,635
-27% -$1.18M ﹤0.01% 1232
2024
Q3 		$4.09M Buy
364,574
+18,859
+5% +$221K 0.01% 1074
2024
Q2 		$4.43M Buy
345,715
+276,210
+397% +$4.21M 0.01% 1048
2024
Q1 		$1.09M Buy
+69,505
New +$1.1M ﹤0.01% 1621
2023
Q3 		– Sell
-28,430
Closed -$405K – 2156
2023
Q2 		$405K Buy
+28,430
New +$416K ﹤0.01% 2057
2023
Q1 		– Sell
-66,029
Closed -$1.15M – 2612
2022
Q4 		$1.15M Buy
+66,029
New +$981K ﹤0.01% 2025

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
TAM
Third Avenue Management New York $625M AUM 48.93% 1-Year Est. Return
BCC
Bain Capital Credit Boston, Massachusetts $368M AUM 9.33% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Jacobs Levy Equity Management
Jacobs Levy Equity Management Florham Park, New Jersey $27.8B AUM 46.46% 1-Year Est. Return

Marshall Wace's OSG Position: Q2 2026 in Review

Marshall Wace reduced its Octave Specialty Group (OSG) stake by 44% in Q2 2026, selling an estimated $2.41M and leaving 601,796 shares worth $3.76M. The position accounts for ﹤0.01% of the portfolio, ranked #1515.

Marshall Wace first reported a position in OSG in Q4 2022 and has held it in 12 quarters since. The position peaked at $5.82M in Q4 2025. 148 funds tracked by Wall St. Rank hold OSG as of Q2 2026.

  • Marshall Wace held 601,796 shares of Octave Specialty Group worth $3.76M as of Q2 2026.
  • Marshall Wace sold 463,539 Octave Specialty Group shares in Q2 2026, an estimated $2.41M.
  • Octave Specialty Group made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #1515 holding.
  • Marshall Wace first reported a position in Octave Specialty Group in Q4 2022 and has held it in 12 quarters since.
  • Marshall Wace's Octave Specialty Group position peaked at $5.82M in Q4 2025.
  • 148 funds tracked by Wall St. Rank held Octave Specialty Group as of Q2 2026.

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