MP
SGI

Mangrove Partners’s Somnigroup International SGI Stock Holding History

Mangrove Partners’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
2025
Q4 		– Sell
-575,915
Closed -$48.6M – 450
2025
Q3 		$48.6M Buy
575,915
+99,952
+21% +$7.88M 3.59% 6
2025
Q2 		$32.4M Buy
475,963
+12,088
+3% +$761K 3.48% 11
2025
Q1 		$27.8M Buy
463,875
+176,984
+62% +$10.7M 3% 13
2024
Q4 		$16.3M Sell
286,891
-31,877
-10% -$1.7M 1.8% 19
2024
Q3 		$17.4M Hold
318,768
– – 1.5% 25
2024
Q2 		$15.1M Hold
318,768
– – 1.16% 30
2024
Q1 		$18.1M Sell
318,768
-320,000
-50% -$16.7M 1.26% 27
2023
Q4 		$32.6M Hold
638,768
– – 2.2% 8
2023
Q3 		$27.7M Buy
+638,768
New +$28.3M 2.09% 10

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 Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
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
LP
Linonia Partnership New York $5.6B AUM 1.81% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
ACM
Abrams Capital Management Boston, Massachusetts $5.48B AUM 3.63% 1-Year Est. Return
BW
Browning West Los Angeles, California $1.69B AUM 9.16% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Mangrove Partners's SGI Position: Q4 2025 in Review

Mangrove Partners sold out of Somnigroup International (SGI) in Q4 2025, closing a stake of 575,915 shares — an estimated $48.6M sold.

Mangrove Partners first reported a position in SGI in Q3 2023 and held it in 9 quarters. The position peaked at $48.6M in Q3 2025. 549 funds tracked by Wall St. Rank hold SGI as of Q4 2025.

  • Mangrove Partners reported no remaining Somnigroup International position as of Q4 2025 after selling out during the quarter.
  • Mangrove Partners sold 575,915 Somnigroup International shares in Q4 2025, an estimated $48.6M.
  • Mangrove Partners first reported a position in Somnigroup International in Q3 2023 and held it in 9 quarters.
  • Mangrove Partners's Somnigroup International position peaked at $48.6M in Q3 2025.
  • 549 funds tracked by Wall St. Rank held Somnigroup International as of Q4 2025.

Based on Mangrove Partners's 13F filing for Q4 2025, filed 17 Feb 2026.