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 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 Omaha, Nebraska $263B AUM 16.68% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

KCMH

Kontiki Capital Management (HK) Hong Kong $1.43B AUM 9.81% 1-Year Est. Return

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Canada Pension Plan Investment Board Toronto Ontario, Ontario, Canada $155B AUM 29.93% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

PEAK6's SIRI Position: Q1 2026 in Review

PEAK6 reduced its SiriusXM (SIRI) stake by 67% in Q1 2026, selling an estimated $270K and leaving 6,111 shares worth $141K. The position accounts for ﹤0.01% of the portfolio, ranked #2351.

PEAK6 first reported a position in SIRI in Q1 2025 and has held it in 4 quarters since. The position peaked at $374K in Q4 2025. 559 funds tracked by Wall St. Rank hold SIRI as of Q1 2026.

PEAK6 held 6,111 shares of SiriusXM worth $141K as of Q1 2026.
PEAK6 sold 12,583 SiriusXM shares in Q1 2026, an estimated $270K.
SiriusXM made up ﹤0.01% of PEAK6's portfolio in Q1 2026, its #2351 holding.
PEAK6 first reported a position in SiriusXM in Q1 2025 and has held it in 4 quarters since.
PEAK6's SiriusXM position peaked at $374K in Q4 2025.
559 funds tracked by Wall St. Rank held SiriusXM as of Q1 2026.

Based on PEAK6's 13F filing for Q1 2026, filed 14 May 2026.