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SummitTX Capital’s SiriusXM SIRI Stock Holding History

SummitTX Capital’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 		$890K Sell
30,133
-143,102
-83% -$3.85M 0.02% 483
2026
Q1 		$4M Buy
173,235
+19,275
+13% +$414K 0.12% 193
2025
Q4 		$3.08M Buy
153,960
+143,704
+1,401% +$3.09M 0.09% 232
2025
Q3 		$239K Sell
10,256
-52,248
-84% -$1.21M 0.01% 676
2025
Q2 		$1.44M Buy
62,504
+7,916
+15% +$170K 0.06% 305
2025
Q1 		$1.23M Buy
+54,588
New +$1.29M 0.05% 352

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

SummitTX Capital's SIRI Position: Q2 2026 in Review

SummitTX Capital reduced its SiriusXM (SIRI) stake by 83% in Q2 2026, selling an estimated $3.85M and leaving 30,133 shares worth $890K. The position accounts for 0.02% of the portfolio, ranked #483.

SummitTX Capital first reported a position in SIRI in Q1 2025 and has held it in 6 quarters since. The position peaked at $4M in Q1 2026. 600 funds tracked by Wall St. Rank hold SIRI as of Q2 2026.

  • SummitTX Capital held 30,133 shares of SiriusXM worth $890K as of Q2 2026.
  • SummitTX Capital sold 143,102 SiriusXM shares in Q2 2026, an estimated $3.85M.
  • SiriusXM made up 0.02% of SummitTX Capital's portfolio in Q2 2026, its #483 holding.
  • SummitTX Capital first reported a position in SiriusXM in Q1 2025 and has held it in 6 quarters since.
  • SummitTX Capital's SiriusXM position peaked at $4M in Q1 2026.
  • 600 funds tracked by Wall St. Rank held SiriusXM as of Q2 2026.

Based on SummitTX Capital's 13F filing for Q2 2026, filed 14 Aug 2026.