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Winton Group’s SiriusXM SIRI Stock Holding History

Winton Group’s Portfolio SIRI Stock Details SIRI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$8.82M Buy
298,563
+282,863
+1,802% +$7.6M 0.29% 87
2026
Q1 		$362K Sell
15,700
-15,400
-50% -$331K 0.01% 809
2025
Q4 		$622K Buy
+31,100
New +$668K 0.02% 588
2021
Q3 		– Sell
-14,108
Closed -$923K – 1468
2021
Q2 		$923K Buy
14,108
+1,347
+11% +$84.5K 0.05% 575
2021
Q1 		$777K Buy
12,761
+11,267
+754% +$687K 0.04% 613
2020
Q4 		$95K Buy
+1,494
New +$91.7K 0.01% 1261
2019
Q3 		– Sell
-105,471
Closed -$5.88M – 1665
2019
Q2 		$5.88M Buy
105,471
+99,931
+1,804% +$5.68M 0.11% 209
2019
Q1 		$314K Buy
5,540
+3,399
+159% +$203K 0.01% 786
2018
Q4 		$122K Buy
2,141
+940
+78% +$57.1K ﹤0.01% 836
2018
Q3 		$76K Buy
+1,201
New +$83.6K ﹤0.01% 994
2018
Q2 		– Sell
-4,555
Closed -$284K – 1143
2018
Q1 		$284K Sell
4,555
-2,088
-31% -$125K 0.01% 996
2017
Q4 		$356K Sell
6,643
-5,146
-44% -$284K 0.01% 573
2017
Q3 		$651K Buy
11,789
+782
+7% +$43.3K 0.02% 491
2017
Q2 		$602K Sell
11,007
-128,229
-92% -$6.55M 0.02% 476
2017
Q1 		$7.17M Buy
+139,236
New +$6.84M 0.2% 154

Other funds holding SIRI

Berkshire Hathaway
Berkshire Hathaway Omaha, Nebraska $299B AUM 27.55% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
KCMH
Kontiki Capital Management (HK) Hong Kong $1.52B AUM 10.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
CCM
Check Capital Management Costa Mesa, California $7.52B AUM 15.3% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
GCM
Gates Capital Management New York $4.16B AUM 21% 1-Year Est. Return

Winton Group's SIRI Position: Q2 2026 in Review

Winton Group increased its SiriusXM (SIRI) stake by 1,802% in Q2 2026, buying an estimated $7.6M and bringing the position to 298,563 shares worth $8.82M. The position accounts for 0.29% of the portfolio, ranked #87.

Winton Group first reported a position in SIRI in Q1 2017 and has held it in 15 quarters since. 602 funds tracked by Wall St. Rank hold SIRI as of Q2 2026.

  • Winton Group held 298,563 shares of SiriusXM worth $8.82M as of Q2 2026.
  • Winton Group bought 282,863 SiriusXM shares in Q2 2026, an estimated $7.6M.
  • SiriusXM made up 0.29% of Winton Group's portfolio in Q2 2026, its #87 holding.
  • Winton Group first reported a position in SiriusXM in Q1 2017 and has held it in 15 quarters since.
  • 602 funds tracked by Wall St. Rank held SiriusXM as of Q2 2026.

Based on Winton Group's 13F filing for Q2 2026, filed 7 Aug 2026.