Jim Simons
SGI

Jim Simons’s Somnigroup International SGI Stock Holding History

Jim Simons’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
Q1 		$36.5M Buy
494,100
+325,700
+193% +$28.3M 0.06% 422
2025
Q4 		$15M Buy
+168,400
New +$14.7M 0.02% 733
2025
Q1 		– Sell
-282,200
Closed -$16M – 3943
2024
Q4 		$16M Buy
282,200
+150,300
+114% +$8.02M 0.02% 763
2024
Q3 		$7.2M Buy
+131,900
New +$6.7M 0.01% 1229
2021
Q1 		– Sell
-912,600
Closed -$24.6M – 3790
2020
Q4 		$24.6M Sell
912,600
-176,488
-16% -$4.3M 0.03% 648
2020
Q3 		$24.3M Sell
1,089,088
-802,496
-42% -$16.6M 0.02% 646
2020
Q2 		$34M Sell
1,891,584
-314,000
-14% -$4.5M 0.03% 558
2020
Q1 		$24.1M Buy
2,205,584
+1,207,696
+121% +$22.9M 0.02% 678
2019
Q4 		$21.7M Buy
997,888
+621,088
+165% +$13M 0.02% 958
2019
Q3 		$7.27M Sell
376,800
-256,800
-41% -$4.93M 0.01% 1596
2019
Q2 		$11.6M Sell
633,600
-292,800
-32% -$4.72M 0.01% 1304
2019
Q1 		$13.4M Buy
926,400
+291,600
+46% +$3.94M 0.01% 1212
2018
Q4 		$6.57M Buy
+634,800
New +$7.61M 0.01% 1563
2016
Q2 		– Sell
-606,800
Closed -$9.22M – 3540
2016
Q1 		$9.22M Sell
606,800
-174,400
-22% -$2.58M 0.02% 1198
2015
Q4 		$13.8M Buy
+781,200
New +$14.9M 0.03% 768
2015
Q1 		– Sell
-67,600
Closed -$928K – 3382
2014
Q4 		$928K Buy
+67,600
New +$923K ﹤0.01% 2154
2014
Q3 		– Sell
-666,000
Closed -$9.94M – 2985
2014
Q2 		$9.94M Buy
+666,000
New +$8.93M 0.02% 841

Other funds holding SGI

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Select Equity Group
Select Equity Group New York $19.5B AUM 17.33% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
LP
Linonia Partnership New York $5.38B AUM 20.54% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
WPL
WINDACRE PARTNERSHIP LLC Houston, Texas $9.34B AUM 17.41% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
BW
Browning West Los Angeles, California $1.62B AUM 22.28% 1-Year Est. Return
ACM
Abrams Capital Management Boston, Massachusetts $4.64B AUM 1.52% 1-Year Est. Return

Jim Simons's SGI Position: Q1 2026 in Review

Jim Simons increased its Somnigroup International (SGI) stake by 193% in Q1 2026, buying an estimated $28.3M and bringing the position to 494,100 shares worth $36.5M. The position accounts for 0.06% of the portfolio, ranked #422.

Jim Simons first reported a position in SGI in Q2 2014 and has held it in 17 quarters since. 526 funds tracked by Wall St. Rank hold SGI as of Q1 2026.

  • Jim Simons held 494,100 shares of Somnigroup International worth $36.5M as of Q1 2026.
  • Jim Simons bought 325,700 Somnigroup International shares in Q1 2026, an estimated $28.3M.
  • Somnigroup International made up 0.06% of Jim Simons's portfolio in Q1 2026, its #422 holding.
  • Jim Simons first reported a position in Somnigroup International in Q2 2014 and has held it in 17 quarters since.
  • 526 funds tracked by Wall St. Rank held Somnigroup International as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.