Stock Ownership/SIRI

SIRIUSXM HOLDINGS INC (SIRI): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in SIRI · Communication Services. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
21
13F filers
Aggregate Value
$4.1B
Across holders
Last Price
$28.45
2026-08-24
Sector
Communication Services
GICS
Quarterly fund activity14 increased5 reduced10 exited
Full exits: MAVERICK CAPITAL LTD, Point72 Asset Management, L.P., Lighthouse Investment Partners, LLC, ADAGE CAPITAL PARTNERS GP, L.L.C., MILLENNIUM MANAGEMENT LLC, MARSHALL WACE, LLP, Magnetar Financial LLC, SHAW D E & CO INC, Holocene Advisors, LP, Walleye Capital LLC
Institutional Holders of SIRI
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21 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
BERKSHIRE HATHAWAY INC (BRK-A, BRK-B)
CIK 0001067983
Institutional Manager124.81M$3.7B90.4%1.2%Unchanged+$2.7BQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund3.40M$98.4M2.4%0.0%Added+$98.4MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund3.31M$97.8M2.4%0.0%Added$-18.5MQ2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund1.65M$48.7M1.2%0.1%Added+$47.4MQ2 2026
Gotham Asset Management, LLC
CIK 0001510387
Hedge Fund1.38M$40.9M1.0%0.1%Added+$4.3MQ2 2026
HBK INVESTMENTS L P
CIK 0001011443
Hedge Fund849K$25.1M0.6%0.2%Reduced$-9.3MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund792K$23.4M0.6%0.0%Reduced+$22.7MQ2 2026
ExodusPoint Capital Management, LP
CIK 0001736225
Hedge Fund532K$15.7M0.4%0.1%Added—Q2 2026
GAMCO INVESTORS, INC. ET AL
CIK 0000807249
Institutional Manager399K$11.8M0.3%0.1%Reduced$-138KQ2 2026
Verition Fund Management LLC
CIK 0001454027
Hedge Fund174K$5.1M0.1%0.0%Added+$4.2MQ2 2026
BERKSHIRE HATHAWAY INC (BRK-A, BRK-B)Unchanged
Institutional Manager
$3.7B· 90.4% of total· 1.2% port· 124.81M sh· +$2.7B QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$98.4M· 2.4% of total· 0.0% port· 3.40M sh· +$98.4M QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$97.8M· 2.4% of total· 0.0% port· 3.31M sh· $-18.5M QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$48.7M· 1.2% of total· 0.1% port· 1.65M sh· +$47.4M QoQ· Q2 2026
Gotham Asset Management, LLCAdded
Hedge Fund
$40.9M· 1.0% of total· 0.1% port· 1.38M sh· +$4.3M QoQ· Q2 2026
HBK INVESTMENTS L PReduced
Hedge Fund
$25.1M· 0.6% of total· 0.2% port· 849K sh· $-9.3M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPReduced
Hedge Fund
$23.4M· 0.6% of total· 0.0% port· 792K sh· +$22.7M QoQ· Q2 2026
ExodusPoint Capital Management, LPAdded
Hedge Fund
$15.7M· 0.4% of total· 0.1% port· 532K sh· — QoQ· Q2 2026
GAMCO INVESTORS, INC. ET ALReduced
Institutional Manager
$11.8M· 0.3% of total· 0.1% port· 399K sh· $-138K QoQ· Q2 2026
Verition Fund Management LLCAdded
Hedge Fund
$5.1M· 0.1% of total· 0.0% port· 174K sh· +$4.2M QoQ· Q2 2026
Bridgewater Associates, LPAdded
Hedge Fund
$4.4M· 0.1% of total· 0.0% port· 148K sh· +$1.7M QoQ· Q2 2026
ArrowMark Colorado Holdings LLCUnchanged
Hedge Fund
$4.3M· 0.1% of total· 0.2% port· 145K sh· +$0 QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$3.2M· 0.1% of total· 0.0% port· 108K sh· +$1.5M QoQ· Q2 2026
CAXTON ASSOCIATES LLPAdded
Hedge Fund
$2.5M· 0.1% of total· 0.0% port· 86K sh· — QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCReduced
Hedge Fund
$2.3M· 0.1% of total· 0.0% port· 77K sh· $-4.1M QoQ· Q2 2026
TWEEDY BROWNE CO LLC//Added
Institutional Manager
$2.0M· 0.0% of total· 0.1% port· 66K sh· +$579K QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$1.6M· 0.0% of total· 0.0% port· 54K sh· — QoQ· Q2 2026
Ancora Advisors, LLCReduced
Hedge Fund
$1.3M· 0.0% of total· 0.0% port· 45K sh· +$473 QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$669K· 0.0% of total· 0.0% port· 23K sh· $-1.4M QoQ· Q2 2026
Fulcrum Asset Management LLPAdded
Hedge Fund
$333K· 0.0% of total· 0.0% port· 11K sh· — QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$251K· 0.0% of total· 0.0% port· 8K sh· $-919K QoQ· Q2 2026
1–10 of 21
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