PEAK6
SIRI icon

PEAK6’s SiriusXM SIRI Stock Holding History

PEAK6’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 		$3.74M Buy
126,700
+10,800
+9% +$290K 0.01% 984
2026
Q1 		$2.67M Sell
115,900
-20,800
-15% -$447K 0.01% 1226
2025
Q4 		$2.73M Buy
136,700
+20,800
+18% +$447K 0.01% 1266
2025
Q3 		$2.7M Buy
+115,900
New +$2.68M ﹤0.01% 1340
2025
Q2 		– Sell
-83,800
Closed -$1.89M – 3462
2025
Q1 		$1.89M Buy
+83,800
New +$1.97M ﹤0.01% 1442

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 $3.37T AUM 44.26% 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

PEAK6's SIRI Position: Q2 2026 in Review

PEAK6 sold out of SiriusXM (SIRI) in Q2 2026, closing a stake of 6,111 shares — an estimated $164K sold.

PEAK6 first reported a position in SIRI in Q1 2025 and held it in 4 quarters. The position peaked at $374K in Q4 2025. 600 funds tracked by Wall St. Rank hold SIRI as of Q2 2026.

  • PEAK6 reported no remaining SiriusXM position as of Q2 2026 after selling out during the quarter.
  • PEAK6 sold 6,111 SiriusXM shares in Q2 2026, an estimated $164K.
  • PEAK6 first reported a position in SiriusXM in Q1 2025 and held it in 4 quarters.
  • PEAK6's SiriusXM position peaked at $374K in Q4 2025.
  • 600 funds tracked by Wall St. Rank held SiriusXM as of Q2 2026.

Based on PEAK6's 13F filing for Q2 2026, filed 13 Aug 2026.