Sirius XM Ownership | Who Owns Sirius XM?

Overview Forecast RevenueFinancials Chart Transcripts

Sirius XM Ownership Summary

Sirius XM is owned by 77.04% institutional investors, 47.49% insiders. Berkshire hathaway is the largest institutional shareholder, holding 36.93% of SIRI shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 2.06% of its assets in Sirius XM shares.

SIRI Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Sirius XM	77.04%	47.49%	-24.53%
Sector	Communication Services Stocks	28.85%	18.19%	52.95%
Industry	Entertainment Stocks	29.37%	18.93%	51.70%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Berkshire hathaway	124.81M	36.93%	$2.88B
Vanguard group	18.32M	5.42%	$366.32M
Blackrock funding, inc. /de	9.63M	2.85%	$222.15M
Dimensional fund advisors lp	6.30M	1.86%	$145.43M
Kontiki capital management (hk)	5.70M	1.69%	$131.48M
Goldman sachs group	3.91M	1.16%	$90.31M
Canada pension plan investment board	3.86M	1.14%	$89.11M
Geode capital management	3.71M	1.10%	$85.57M
State street	3.55M	1.05%	$81.88M
Citadel advisors	3.26M	0.96%	$75.28M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Bardin hill management partners lp	1.25M	14.40%	$35.46M
Bislett management	600.00K	10.68%	$13.85M
Wittenberg investment management	1.11M	9.50%	$25.56M
Kontiki capital management (hk)	5.70M	9.22%	$131.48M
Swisspartners advisors	419.34K	6.05%	$9.62M
Towerview	335.30K	4.99%	$7.74M
Hi-line capital management	667.68K	4.84%	$15.41M
Chou associates management	409.59K	4.50%	$9.45M
Hall kathryn a.	262.03K	3.29%	$6.10M
Capital management corp /va	530.54K	2.09%	$12.24M

Top Buyers

Holder	Shares	% Assets	Change
Dimensional fund advisors lp	6.30M	0.03%	4.56M
Norges bank	2.86M	0.01%	2.86M
Gates capital management	2.74M	1.73%	2.74M
Citadel advisors	3.26M	0.01%	2.47M
Canada pension plan investment board	3.86M	0.06%	1.99M

Top Sellers

Holder	Shares	% Assets	Change
Blackrock	28.07M	0.00%	-15.71M
Proshare advisors	-	-	-3.75M
Impactive capital lp	-	-	-3.49M
D. e. shaw	101.53K	0.00%	-3.20M
Senvest management	-	-	-3.14M

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	2.86M	0.01%	2.86M	$57.12M
Gates capital management	2.74M	1.73%	2.74M	$63.29M
Vanguard fiduciary trust	1.16M	0.01%	1.16M	$26.80M
Healthcare of ontario pension plan trust fund	901.00K	0.03%	901.00K	$20.80M
Panagora asset management	650.21K	0.06%	650.21K	$15.01M

Sold Out

Holder	Change
Grove bank & trust	-1.00
Annis gardner whiting capital advisors	-1.00
Hallmark capital management	-1.00
Strategic advocates	-1.00
Rakuten securities	-2.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	576	4.16%	258,845,352	3.92%	77	1.40%	302	45.19%	116	-29.27%
Dec 31, 2025	209	-63.78%	35,845,507	-85.26%	10	0.20%	71	-67.43%	53	-69.36%
Sep 30, 2025	261	-54.92%	40,594,235	-83.49%	12	0.23%	89	-61.47%	74	-56.21%
Jun 30, 2025	571	-3.22%	244,369,306	0.94%	72	1.42%	226	-12.40%	167	-2.34%
Mar 31, 2025	587	-3.45%	246,422,132	-2.78%	72	1.29%	254	-13.31%	172	-2.27%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard US Total Market Shares ETF	6.97M	2.06%	6.23M
Vanguard Total Stock Mkt Idx Inv	5.89M	1.75%	14.96K
Vanguard Small Cap Index	4.24M	1.26%	-12.94K
BlackRock Systematic Multi-Strat Instl	2.81M	0.83%	-237.74K
Vanguard Small Cap Value Index Inv	2.73M	0.81%	23.98K
Vanguard Institutional Extnd Mkt Idx Tr	2.12M	0.63%	21.79K
FullerThaler Behavioral Small-Cap Growth	1.94M	0.57%	1.94M
Smead Value Investor	1.93M	0.57%	-85.57K
Smead US Value Composite	1.93M	0.57%	-91.82K
FullerThaler Behavioral Sm-Cp Gr R6	1.92M	0.57%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Aug 04, 2025	BERKSHIRE HATHAWAY INC	-	Buy	$22.43M
Aug 01, 2025	BERKSHIRE HATHAWAY INC	-	Buy	$40.57M
Aug 01, 2025	BERKSHIRE HATHAWAY INC	-	Buy	$40.57M
Jul 31, 2025	BERKSHIRE HATHAWAY INC	-	Buy	$1.83M
Aug 04, 2025	BERKSHIRE HATHAWAY INC	-	Buy	$22.43M

Insider Transactions Trends

Date	Buy	Sell
2025 Q3	8	-
2025 Q1	4	-
2024 Q4	15	-
2024 Q3	-	-
2023 Q4	-	-

SIRI Ownership FAQ

Who Owns Sirius XM?

Sirius XM shareholders are primarily institutional investors at 77.04%, followed by 47.49% insiders and -24.53% retail investors. The average institutional ownership in Sirius XM's industry, Entertainment Stocks , is 29.37%, which Sirius XM exceeds.

Who owns the most shares of Sirius XM?

Sirius XM’s largest shareholders are Berkshire hathaway (124.81M shares, 36.93%), Vanguard group (18.32M shares, 5.42%), and Blackrock funding, inc. /de (9.63M shares, 2.85%). Together, they hold 45.19% of Sirius XM’s total shares outstanding.

Does Blackrock own Sirius XM?

BlackRock is not among the top 10 institutional shareholders of Sirius XM.

Who is Sirius XM’s biggest shareholder by percentage of total assets invested?

Bardin hill management partners lp is Sirius XM’s biggest shareholder by percentage of total assets invested, with 14.40% of its assets in 1.25M Sirius XM shares, valued at 35.46M$.

Who is the top mutual fund holder of Sirius XM shares?

Vanguard US Total Market Shares ETF is the top mutual fund holder of Sirius XM shares, with 2.06% of its total shares outstanding invested in 6.97M Sirius XM shares.

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