Sirius Xm Holdings SIRI Institutional Ownership

NASDAQ SIRI

$26.84 -0.13 (-0.48%)

At close: Oct 19, 2026 · 4:00 PM EDT

Institutions by Trading Activity

593 Institutions

Increased 312 52.6%

Unchanged 132 22.3%

Reduced 149 25.1%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

83.64%

▲+6.58 pp QoQ

Shares Held by Institutions

281.85Mn

of 337.00Mn outstanding

▲+8.86% QoQ

Shares Outstanding

337.00Mn

55.15Mn held outside 13F filers

Institutional Investors

593

filed 13F for Jun 2026

▲+40 vs prior quarter

Net Shares Added (QoQ)

+22.94Mn

accumulated since last quarter

Value of Holdings

$7.65Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

Sirius Xm Holdings Inc. (NASDAQ:SIRI) counted 593 institutional investors among its 13F-reported shareholders for the quarter ended June 30, 2026.

These investors held 83.64% of Sirius Xm Holdings' outstanding shares at the end of Q2 2026, up from 77.06% in Q1 2026.
Total holdings of SIRI shares rose 8.86% from Q1 2026, and the holder count rose 9.01% from Q2 2025.
Of these 593 holders, 312 added to their positions, 149 reduced their stakes and 132 left their positions unchanged.
Altogether, institutional holders owned 281.85Mn SIRI shares at the end of Q2 2026, up 22.94Mn from the prior quarter and up 39.33Mn from a year earlier.
Berkshire Hathaway Inc led 13F holders of SIRI with 124.81Mn shares as of June 30, 2026, or 37.03% of shares outstanding.
Among existing holders, the largest additions to Sirius Xm Holdings in Q2 2026 came from BlackRock, Inc. (+7.98Mn shares), Dimensional Fund Advisors LP (+4.21Mn shares), State Street Corp (+2.44Mn shares), Gates Capital Management, Inc. (+1.8Mn shares) and Squarepoint Ops LLC (+1.6Mn shares).
The biggest cuts to SIRI positions during Q2 2026 came from Seizert Capital Partners, LLC (-1.83Mn shares), Ameriprise Financial Inc (-1.69Mn shares), Canada Pension Plan Investment Board (-1.5Mn shares), Thompson Siegel & Walmsley LLC (-1.49Mn shares) and HSBC Holdings PLC (-1.25Mn shares).
Business Quant data shows the 10 biggest positions in Sirius Xm Holdings as of Q2 2026 were held by Berkshire Hathaway Inc (124.81Mn shares), BlackRock, Inc. (17.6Mn shares), Dimensional Fund Advisors LP (10.51Mn shares), Vanguard Portfolio Management LLC (9.08Mn shares), Vanguard Capital Management LLC (8.39Mn shares), Kontiki Capital Management (HK) Ltd. (6.08Mn shares), State Street Corp (5.99Mn shares), Boston Partners (5.08Mn shares), Gates Capital Management, Inc. (4.54Mn shares) and Geode Capital Management, LLC (3.9Mn shares).

Form 13F Holdings

594 Institutional Holders

Report period 30 Jun, 2026

Total shares held 281.85Mn

Of outstanding 83.64%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Berkshire Hathaway Inc	0001067983	124,807,117	37.03%	0	0.00%	$3.69Bn
2	BlackRock, Inc.	0002012383	17,602,229	5.22%	▲7,977,045	+82.88%	$519.97Mn
3	DIMENSIONAL FUND ADVISORS LP	0000354204	10,512,352	3.12%	▲4,211,171	+66.83%	$310.53Mn
4	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	9,082,629	2.70%	▲377,881	+4.34%	$268.30Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	8,386,784	2.49%	▲83,154	+1.00%	$247.75Mn
6	Kontiki Capital Management (HK) Ltd.	0001713390	6,082,824	1.80%	▲386,100	+6.78%	$179.69Mn
7	State Street Corp	0000093751	5,992,497	1.78%	▲2,444,881	+68.92%	$177.02Mn
8	Boston Partners	0001386060	5,080,806	1.51%	▲5,080,806	0.00%	$150.17Mn
9	Gates Capital Management, Inc.	0001312908	4,539,927	1.35%	▲1,797,568	+65.55%	$134.11Mn
10	GEODE CAPITAL MANAGEMENT, LLC	0001214717	3,901,488	1.16%	▲194,777	+5.25%	$115.28Mn
11	LSV ASSET MANAGEMENT	0001050470	3,620,469	1.07%	▲400,492	+12.44%	$106.95K
12	AQR CAPITAL MANAGEMENT LLC	0001167557	3,396,308	1.01%	▲407,401	+13.63%	$98.37Mn
13	CITADEL ADVISORS LLC	0001423053	3,310,550	0.98%	▲48,908	+1.50%	$97.79Mn
14	Bank of New York Mellon Corp	0001390777	3,012,240	0.89%	▲834,479	+38.32%	$88.98Mn
15	Goldman Sachs Group Inc	0000886982	3,007,137	0.89%	▼905,991	-23.15%	$88.83Mn
16	CHECK CAPITAL MANAGEMENT INC/CA	0001032814	2,927,799	0.87%	▼14,796	-0.50%	$86.49Mn
17	J. Goldman & Co LP	0001412741	2,921,651	0.87%	▲2,921,651	0.00%	$86.31Mn
18	CANADA PENSION PLAN INVESTMENT BOARD	0001283718	2,364,933	0.70%	▼1,495,991	-38.75%	$69.86Mn
19	NORGES BANK	0001374170	2,091,917	0.62%	▲2,091,917	0.00%	$61.80Mn
20	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	1,760,633	0.52%	▲20,442	+1.17%	$52.01Mn

Showing 1 to 20 of 594 holders