$SIRI

$27.42 -$0.21 (0.78%) Close

$SIRI Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 337.1M shares outstanding

Who owns SIRI?

By type of holder

Institutions 83.4% Insiders 6.0% Everyone else 10.6%

Concentration Top 10 holders own 62.7%

Berkshire Hathaway Inc 37.0% · John C. Malone 5.5%

Institutional ownership

83.4%

+6.6 pts vs last qtr

Institutional holders

596

+38 vs last qtr

Net shares bought

+22.1M

by institutions in Q2 2026

New / sold out

111 / 73

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

BlackRock, Inc. +8.0M
Boston Partners NEW +5.1M

Biggest sellers in Q2 2026

Seizert Capital Partners, LLC −1.8M
Ameriprise Financial Inc −1.7M

Who is planning to sell?

Notices of proposed sale, last 12 months

$161K

2 notices from 1 person

Shares covered

5.9K

0.00% of the company

Arranged in advance

100%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Salen Kristina Director 10b5-1 $161K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2023–FY2025

−1.4%

−0.69% a year

Each share's claim on the business

+1.4%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$416M vs $582M

over 3 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years89% Under 1 year11%

Quarterly turnover

13.2%

of institutional shares changed hands

Top 10 managers, median time held

1.8 years

Super Investors

Investment managers reporting SIRI on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
BH Berkshire Hathaway Inc	124.8M	37.03%	Unchanged	2024	1.2%
Shares held by quarter Peak holding124.8M (Q3'25) Change over 8 quarters+19.7M Share of the company37.030% Berkshire Hathaway Inc's full portfolio →
B BlackRock, Inc.	17.6M	5.22%	+8.0M (+82.9%)	2024	0.0%
Shares held by quarter Peak holding17.6M (Q2'26) Change over 8 quarters+8.1M Share of the company5.220% BlackRock, Inc.'s full portfolio →

Berkshire Hathaway Inc

124.8M

% of company

37.03%

Change vs last qtr

Unchanged

Held since

2024

BlackRock, Inc.

17.6M

% of company

5.22%

Change vs last qtr

+8.0M (+82.9%)

Held since

2024

28 more super investors behind a free account

See every manager holding Sirius XM Holdings Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting SIRI on Form N-PORT; together they hold 19.5% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core S&P Mid-Cap ETF iShares Trust	$191M	6.5M	1.91%	0.15%	June 30, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$174M	5.9M	1.75%	0.01%	June 30, 2026

iShares Core S&P Mid-Cap ETF

iShares Trust

Position value

$191M

% of company

1.91%

% of the fund

0.15%

As of

June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$174M

% of company

1.75%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Sirius XM Holdings Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
JC John C. Malone 5%+ holder 13D · 5.5%	18.4M	5.47%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company5.470% Disclosed stake13D · 5.5% View the 13D/G filing →
MG Maffei Gregory B Insider	5.4M	1.60%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.600% Maffei Gregory B's insider activity →

John C. Malone

5%+ holder13D · 5.5%

18.4M

% of company

5.47%

Change vs last qtr

—

Held since

—

Maffei Gregory B

Insider

5.4M

% of company

1.60%

Change vs last qtr

—

Held since

—

18 more holders behind a free account

See every insider and 5%+ holder of Sirius XM Holdings Inc..

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