Marshall Wace
SGI

Marshall Wace’s Somnigroup International SGI Stock Holding History

Marshall Wace’s Portfolio SGI Stock Details SGI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$25.3M Sell
322,484
-266,301
-45% -$19.5M 0.02% 623
2026
Q1 		$43.5M Sell
588,785
-162,974
-22% -$14.1M 0.04% 417
2025
Q4 		$67.1M Buy
751,759
+466,260
+163% +$40.7M 0.06% 273
2025
Q3 		$24.1M Buy
+285,499
New +$22.5M 0.02% 573
2025
Q2 		– Sell
-279,960
Closed -$16.8M – 3301
2025
Q1 		$16.8M Buy
+279,960
New +$16.9M 0.02% 565
2024
Q4 		– Sell
-97,396
Closed -$5.32M – 3095
2024
Q3 		$5.32M Buy
97,396
+88,396
+982% +$4.49M 0.01% 977
2024
Q2 		$426K Buy
+9,000
New +$456K ﹤0.01% 2018
2023
Q1 		– Sell
-395,484
Closed -$13.6M – 3197
2022
Q4 		$13.6M Buy
+395,484
New +$11.9M 0.03% 640
2022
Q2 		– Sell
-348,256
Closed -$9.72M – 3942
2022
Q1 		$9.72M Buy
348,256
+245,778
+240% +$9.06M 0.02% 890
2021
Q4 		$4.82M Buy
102,478
+70,285
+218% +$3.19M 0.01% 1382
2021
Q3 		$1.49M Buy
+32,193
New +$1.41M 0.01% 1753
2020
Q4 		– Sell
-53,904
Closed -$1.2M – 2248
2020
Q3 		$1.2M Sell
53,904
-229,028
-81% -$4.73M 0.01% 962
2020
Q2 		$5.09M Buy
282,932
+203,720
+257% +$2.92M 0.04% 465
2020
Q1 		$866K Sell
79,212
-479,664
-86% -$9.11M 0.01% 835
2019
Q4 		$12.2M Buy
+558,876
New +$11.7M 0.08% 274
2019
Q1 		– Sell
-10,412
Closed -$108K – 2104
2018
Q4 		$108K Buy
+10,412
New +$125K ﹤0.01% 1355
2015
Q4 		– Sell
-35,756
Closed -$639K – 1151
2015
Q3 		$639K Buy
+35,756
New +$656K 0.01% 701

Other funds holding SGI

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 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
Select Equity Group
Select Equity Group New York $20.2B AUM 17.52% 1-Year Est. Return
WPL
WINDACRE PARTNERSHIP LLC Houston, Texas $10.1B AUM 10.46% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
LP
Linonia Partnership New York $5.6B AUM 1.81% 1-Year Est. Return
BW
Browning West Los Angeles, California $1.69B AUM 9.16% 1-Year Est. Return
ACM
Abrams Capital Management Boston, Massachusetts $5.48B AUM 3.63% 1-Year Est. Return

Marshall Wace's SGI Position: Q2 2026 in Review

Marshall Wace reduced its Somnigroup International (SGI) stake by 45% in Q2 2026, selling an estimated $19.5M and leaving 322,484 shares worth $25.3M. The position accounts for 0.02% of the portfolio, ranked #623.

Marshall Wace first reported a position in SGI in Q3 2015 and has held it in 17 quarters since. The position peaked at $67.1M in Q4 2025. 538 funds tracked by Wall St. Rank hold SGI as of Q2 2026.

  • Marshall Wace held 322,484 shares of Somnigroup International worth $25.3M as of Q2 2026.
  • Marshall Wace sold 266,301 Somnigroup International shares in Q2 2026, an estimated $19.5M.
  • Somnigroup International made up 0.02% of Marshall Wace's portfolio in Q2 2026, its #623 holding.
  • Marshall Wace first reported a position in Somnigroup International in Q3 2015 and has held it in 17 quarters since.
  • Marshall Wace's Somnigroup International position peaked at $67.1M in Q4 2025.
  • 538 funds tracked by Wall St. Rank held Somnigroup International as of Q2 2026.

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