XTX Topco’s SiriusXM SIRI Stock Holding History

XTX Topco’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	–	Sell	-12,030	Closed	-$278K	–	4659
2026 Q1	$278K	Sell	12,030 -59,545	-83%	-$1.28M	﹤0.01%	2547
2025 Q4	$1.43M	Buy	71,575 +37,256	+109%	+$801K	0.04%	771
2025 Q3	$799K	Sell	34,319 -6,027	-15%	-$139K	0.04%	721
2025 Q2	$927K	Buy	+40,346	New	+$868K	0.04%	710
2024 Q4	–	Sell	-52,161	Closed	-$1.23M	–	2874
2024 Q3	$1.23M	Buy	+52,161	New	+$1.62M	0.09%	334
2024 Q1	–	Sell	-1,887	Closed	-$103K	–	2279
2023 Q4	$103K	Sell	1,887 -3,417	-64%	-$164K	0.02%	1112
2023 Q3	$240K	Buy	+5,304	New	+$247K	0.04%	897
2023 Q1	–	Sell	-8,839	Closed	-$516K	–	1630
2022 Q4	$516K	Buy	+8,839	New	+$543K	0.11%	285
2022 Q3	–	Sell	-8,303	Closed	-$509K	–	1356
2022 Q2	$509K	Buy	8,303 +3,494	+73%	+$217K	0.21%	111
2022 Q1	$318K	Buy	+4,809	New	+$303K	0.14%	246
2021 Q2	–	Sell	-1,152	Closed	-$70K	–	1064
2021 Q1	$70K	Buy	+1,152	New	+$70.2K	0.03%	598

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 $3.37T 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, Massachusetts $113B AUM 38.87% 1-Year Est. Return

GCM

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

XTX Topco's SIRI Position: Q2 2026 in Review

XTX Topco sold out of SiriusXM (SIRI) in Q2 2026, closing a stake of 12,030 shares — an estimated $278K sold.

XTX Topco first reported a position in SIRI in Q1 2021 and held it in 11 quarters. The position peaked at $1.43M in Q4 2025. 601 funds tracked by Wall St. Rank hold SIRI as of Q2 2026.

XTX Topco reported no remaining SiriusXM position as of Q2 2026 after selling out during the quarter.
XTX Topco sold 12,030 SiriusXM shares in Q2 2026, an estimated $278K.
XTX Topco first reported a position in SiriusXM in Q1 2021 and held it in 11 quarters.
XTX Topco's SiriusXM position peaked at $1.43M in Q4 2025.
601 funds tracked by Wall St. Rank held SiriusXM as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.