Citadel Advisors
SGI

Citadel Advisors’s Somnigroup International SGI Stock Holding History

Citadel Advisors’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 		$5.95M Buy
80,500
+24,000
+42% +$2.08M ﹤0.01% 4054
2025
Q4 		$5.04M Buy
56,500
+700
+1% +$61.2K ﹤0.01% 4276
2025
Q3 		$4.71M Sell
55,800
-53,900
-49% -$4.25M ﹤0.01% 4470
2025
Q2 		$7.47M Buy
109,700
+31,500
+40% +$1.98M ﹤0.01% 3451
2025
Q1 		$4.68M Sell
78,200
-26,800
-26% -$1.62M ﹤0.01% 3980
2024
Q4 		$5.95M Sell
105,000
-43,300
-29% -$2.31M ﹤0.01% 3690
2024
Q3 		$8.1M Sell
148,300
-33,300
-18% -$1.69M ﹤0.01% 3229
2024
Q2 		$8.6M Buy
181,600
+38,600
+27% +$1.95M ﹤0.01% 2970
2024
Q1 		$8.13M Sell
143,000
-101,200
-41% -$5.27M ﹤0.01% 3210
2023
Q4 		$12.4M Sell
244,200
-10,800
-4% -$458K ﹤0.01% 2567
2023
Q3 		$11.1M Buy
255,000
+80,200
+46% +$3.56M ﹤0.01% 2567
2023
Q2 		$7M Buy
174,800
+67,000
+62% +$2.52M ﹤0.01% 3153
2023
Q1 		$4.26M Sell
107,800
-197,600
-65% -$7.86M ﹤0.01% 4070
2022
Q4 		$10.5M Buy
305,400
+28,600
+10% +$860K ﹤0.01% 2766
2022
Q3 		$6.68M Buy
276,800
+15,800
+6% +$409K ﹤0.01% 3397
2022
Q2 		$5.58M Buy
261,000
+158,500
+155% +$4.08M ﹤0.01% 3595
2022
Q1 		$2.86M Sell
102,500
-152,900
-60% -$5.63M ﹤0.01% 5299
2021
Q4 		$12M Sell
255,400
-120,000
-32% -$5.44M ﹤0.01% 2757
2021
Q3 		$17.4M Buy
375,400
+130,800
+53% +$5.71M ﹤0.01% 2203
2021
Q2 		$9.59M Buy
244,600
+33,000
+16% +$1.26M ﹤0.01% 3150
2021
Q1 		$7.74M Sell
211,600
-142,600
-40% -$4.62M ﹤0.01% 3397
2020
Q4 		$9.56M Buy
354,200
+77,400
+28% +$1.89M ﹤0.01% 2699
2020
Q3 		$6.17M Buy
276,800
+40,400
+17% +$835K ﹤0.01% 2864
2020
Q2 		$4.25M Sell
236,400
-77,600
-25% -$1.11M ﹤0.01% 3312
2020
Q1 		$3.43M Sell
314,000
-49,600
-14% -$942K ﹤0.01% 3251
2019
Q4 		$7.91M Sell
363,600
-73,600
-17% -$1.54M ﹤0.01% 2481
2019
Q3 		$8.44M Sell
437,200
-1,039,200
-70% -$19.9M ﹤0.01% 2420
2019
Q2 		$27.1M Sell
1,476,400
-521,200
-26% -$8.41M 0.01% 1149
2019
Q1 		$28.8M Buy
1,997,600
+1,125,200
+129% +$15.2M 0.01% 1052
2018
Q4 		$9.03M Sell
872,400
-48,000
-5% -$575K ﹤0.01% 2019
2018
Q3 		$12.2M Buy
920,400
+122,000
+15% +$1.63M 0.01% 1887
2018
Q2 		$9.59M Buy
798,400
+509,600
+176% +$6.01M ﹤0.01% 1983
2018
Q1 		$3.27M Sell
288,800
-288,000
-50% -$3.95M ﹤0.01% 3024
2017
Q4 		$9.04M Buy
576,800
+371,600
+181% +$5.67M 0.01% 1830
2017
Q3 		$3.31M Sell
205,200
-777,600
-79% -$11.5M ﹤0.01% 2783
2017
Q2 		$13.1M Sell
982,800
-2,121,200
-68% -$25M 0.01% 1259
2017
Q1 		$36.1M Buy
3,104,000
+2,786,400
+877% +$35.8M 0.03% 608
2016
Q4 		$5.42M Buy
317,600
+94,000
+42% +$1.4M 0.01% 1918
2016
Q3 		$3.17M Sell
223,600
-51,600
-19% -$920K ﹤0.01% 2447
2016
Q2 		$3.81M Buy
275,200
+98,000
+55% +$1.45M ﹤0.01% 2074
2016
Q1 		$2.69M Buy
177,200
+5,200
+3% +$77K ﹤0.01% 2353
2015
Q4 		$3.03M Buy
172,000
+45,600
+36% +$867K ﹤0.01% 2317
2015
Q3 		$2.26M Sell
126,400
-5,600
-4% -$103K ﹤0.01% 2790
2015
Q2 		$2.17M Buy
132,000
+30,400
+30% +$464K ﹤0.01% 2976
2015
Q1 		$1.47M Buy
101,600
+26,800
+36% +$371K ﹤0.01% 3468
2014
Q4 		$1.03M Sell
74,800
-10,800
-13% -$147K ﹤0.01% 3738
2014
Q3 		$1.2M Buy
85,600
+19,600
+30% +$287K ﹤0.01% 3481
2014
Q2 		$985K Buy
66,000
+10,400
+19% +$139K ﹤0.01% 3506
2014
Q1 		$704K Sell
55,600
-121,200
-69% -$1.51M ﹤0.01% 3881
2013
Q4 		$2.38M Sell
176,800
-58,800
-25% -$675K ﹤0.01% 2366
2013
Q3 		$2.59M Sell
235,600
-210,800
-47% -$2.19M ﹤0.01% 2163
2013
Q2 		$4.9M Buy
+446,400
New +$5.07M 0.01% 1596

Other funds holding SGI

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 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 $2.9T AUM 29.55% 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

Citadel Advisors's SGI Position: Q1 2026 in Review

Citadel Advisors increased its Somnigroup International (SGI) stake by 1,547% in Q1 2026, buying an estimated $56.5M and bringing the position to 692,884 shares worth $51.2M. The position accounts for 0.01% of the portfolio, ranked #1331.

Citadel Advisors first reported a position in SGI in Q2 2013 and has held it in 49 quarters since. The position peaked at $88.8M in Q2 2025. 524 funds tracked by Wall St. Rank hold SGI as of Q1 2026.

  • Citadel Advisors held 692,884 shares of Somnigroup International worth $51.2M as of Q1 2026.
  • Citadel Advisors bought 650,812 Somnigroup International shares in Q1 2026, an estimated $56.5M.
  • Somnigroup International made up 0.01% of Citadel Advisors's portfolio in Q1 2026, its #1331 holding.
  • Citadel Advisors first reported a position in Somnigroup International in Q2 2013 and has held it in 49 quarters since.
  • Citadel Advisors's Somnigroup International position peaked at $88.8M in Q2 2025.
  • 524 funds tracked by Wall St. Rank held Somnigroup International as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.