SiriusXM Holdings Inc (SIRI) Stock Institutional Trading Activity


SiriusXM Holdings Inc (SIRI) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Chou Associates Management, Tweedy, Browne Co All Funds (US), Berkshire Hathaway, Sequoia Financial Advisors, and Hancock Classic Value. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2018Sequoia Financial AdvisorsBuy12510,125$58
Q4 2018Renaissance Technologies LLCSell-2,805,4005,701,100$32,553
Q3 2018Renaissance Technologies LLCBuy8,058,4008,506,500$53,761
Q1 2018Sequoia Financial AdvisorsSell-1,80010,000$62
Q1 2018Renaissance Technologies LLCSell-324,100448,100$2,796
Q4 2017Renaissance Technologies LLCSell-3,279,819772,200$4,139
Q3 2017Renaissance Technologies LLCSell-793,7814,052,019$22,367
Q2 2017Renaissance Technologies LLCSell-21,100,1004,845,800$26,507
Q2 2017Berkshire HathawaySell-34,409,624137,915,729$754,399
Q1 2017Renaissance Technologies LLCSell-5,028,10025,945,900$133,621
Q1 2017Berkshire HathawayBuy5,685,412172,325,353$887,476
Q4 2016Renaissance Technologies LLCSell-20,063,50030,974,000$137,834
Q4 2016Berkshire HathawayBuy166,639,941166,639,941$741,547
Q3 2016Sequoia Financial AdvisorsSell-83011,800$49
Q3 2016Renaissance Technologies LLCBuy22,211,40051,037,500$212,826
Q2 2016Sequoia Financial AdvisorsBuy12,58312,630$50
Q2 2016Renaissance Technologies LLCBuy13,609,10028,826,100$113,863
Q1 2016Sequoia Financial AdvisorsSell-14,25347$11,800
Q1 2016Renaissance Technologies LLCSell-10,208,30015,217,000$60,107
Q4 2015Sequoia Financial AdvisorsBuy2,50014,300$50
Q4 2015Renaissance Technologies LLCBuy17,565,90025,425,300$103,481
Q3 2015Sequoia Financial AdvisorsSell-2,50011,800$44
Q3 2015Renaissance Technologies LLCSell-11,722,6207,859,400$29,394
Q2 2015Renaissance Technologies LLCBuy6,891,92019,582,020$73,041
Q1 2015Renaissance Technologies LLCBuy4,849,00012,690,100$48,476
Q4 2014Renaissance Technologies LLCBuy449,2447,841,100$27,444
Q4 2014Dodge & Cox Stock FundSell-30,99010,520$37
Q3 2014First Eagle U.S. ValueSell-1,228,700350,000$1,222
Q3 2014Egerton Capital UKBuy20,888,47620,888,476$72,901
Q3 2014Dodge & Cox Stock FundBuy41,51041,510$145

Frequently asked questions about SIRI activity

  • Which institutional owners are buying SIRI?

    Institutional owners buying SIRI include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in SIRI activity?

    "Buy" means an investor increased their reported position in SIRI compared to the prior reporting period. This reflects growing exposure to SiriusXM Holdings Inc (SIRI) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in SIRI increasing?

    Institutional interest in SIRI can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.