HBK Investments’s SiriusXM SIRI Stock Holding History

HBK Investments’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
2025 Q1	–	Sell	-369,000	Closed	-$8.41M	–	226
2024 Q4	$8.41M	Buy	+369,000	New	+$9.41M	0.1%	95
2024 Q2	–	Sell	-222,780	Closed	-$8.64M	–	217
2024 Q1	$8.64M	Buy	222,780 +147,780	+197%	+$7.03M	0.04%	78
2023 Q4	$4.1M	Buy	+75,000	New	+$3.6M	0.02%	132
2019 Q1	–	Sell	-75,000	Closed	-$4.28M	–	1314
2018 Q4	$4.28M	Hold	75,000	–	–	0.05%	312
2018 Q3	$4.74M	Hold	75,000	–	–	0.04%	304
2018 Q2	$5.08M	Hold	75,000	–	–	0.03%	271
2018 Q1	$4.68M	Hold	75,000	–	–	0.03%	293
2017 Q4	$4.02M	Buy	+75,000	New	+$4.14M	0.03%	299
2015 Q1	–	Sell	-5,150	Closed	-$180K	–	1142
2014 Q4	$180K	Buy	+5,150	New	+$177K	﹤0.01%	928
2013 Q4	–	Sell	-35,090	Closed	-$1.36M	–	1002
2013 Q3	$1.36M	Sell	35,090 -15,900	-31%	-$592K	0.02%	385
2013 Q2	$1.71M	Buy	+50,990	New	+$1.68M	0.03%	295

Other funds holding SIRI

Berkshire Hathaway Omaha, Nebraska $299B AUM 27.55% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

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 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, Massachusetts $113B AUM 38.87% 1-Year Est. Return

GCM

Gates Capital Management New York $4.16B AUM 21% 1-Year Est. Return

HBK Investments's SIRI Position: Q2 2026 in Review

HBK Investments reduced its SiriusXM (SIRI) stake by 27% in Q2 2026, selling an estimated $8.47M and leaving 848,845 shares worth $25.1M. The position accounts for 0.24% of the portfolio, ranked #45.

HBK Investments first reported a position in SIRI in Q3 2015 and has held it in 14 quarters since. The position peaked at $33.7M in Q4 2025. 602 funds tracked by Wall St. Rank hold SIRI as of Q2 2026.

HBK Investments held 848,845 shares of SiriusXM worth $25.1M as of Q2 2026.
HBK Investments sold 315,358 SiriusXM shares in Q2 2026, an estimated $8.47M.
SiriusXM made up 0.24% of HBK Investments's portfolio in Q2 2026, its #45 holding.
HBK Investments first reported a position in SiriusXM in Q3 2015 and has held it in 14 quarters since.
HBK Investments's SiriusXM position peaked at $33.7M in Q4 2025.
602 funds tracked by Wall St. Rank held SiriusXM as of Q2 2026.

Based on HBK Investments's 13F filing for Q2 2026, filed 14 Aug 2026.