Sirius Xm Holdings SIRI Institutional Ownership

NASDAQ SIRI

$28.78 -0.20 (-0.71%)

As of: Sep 8, 2026 · 3:59 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

84.16%

▲+7.06 pp QoQ

Shares Held by Institutions

283.61Mn

of 337.00Mn outstanding

▲+12.18% QoQ

Shares Outstanding

337.00Mn

53.39Mn held outside 13F filers

Institutional Investors

593

filed 13F for Jun 2026

▲+38 vs prior quarter

Net Shares Added (QoQ)

+30.80Mn

accumulated since last quarter

Value of Holdings

$8.22Bn

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

Quarter ending 30 Jun, 2026

Sirius Xm Holdings Inc. (NASDAQ:SIRI) is held by 593 institutional investors per 13F filings through June 2026.

Their combined ownership stood at 84.2% of outstanding shares in June 2026, up from 77.1% in March 2026.
Their total shares held in SIRI increased 12.18% from the prior quarter, while the number of investors in Sirius Xm Holdings increased 8.41% year over year.
Of these 593 funds, 312 grew their exposure to Sirius Xm Holdings, 149 cut back, and 132 maintained positions.
Combined, these investors held 283.61Mn shares in SIRI for June 2026, up by 30.8Mn shares quarter on quarter, and up 38.1Mn shares year over year.
As of June 30, 2026, Berkshire Hathaway Inc held the largest stake in Sirius Xm Holdings with 124.81Mn shares, accounting for 37.03% of total shares outstanding.
The biggest buyers of Sirius Xm Holdings for the quarter ending June 2026 included BlackRock, Inc. (7.98Mn), Boston Partners (5.08Mn), DIMENSIONAL FUND ADVISORS LP (4.21Mn), J. Goldman & Co LP (2.92Mn), State Street Corp (2.44Mn).
Top sellers of SIRI stock for the quarter ending June 2026 included SEIZERT CAPITAL PARTNERS, LLC (1.83Mn), Ameriprise Financial Inc (1.69Mn), CANADA PENSION PLAN INVESTMENT BOARD (1.5Mn), THOMPSON SIEGEL & WALMSLEY LLC (1.49Mn), HSBC HOLDINGS PLC (1.25Mn).
Business Quant data shows the 10 biggest positions in Sirius Xm Holdings as of June 2026 are held by Berkshire Hathaway Inc (124.81Mn), BlackRock, Inc. (17.6Mn), DIMENSIONAL FUND ADVISORS LP (10.51Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (9.08Mn), VANGUARD CAPITAL MANAGEMENT LLC (8.39Mn), Kontiki Capital Management (HK) Ltd. (6.08Mn), State Street Corp (5.99Mn), Boston Partners (5.08Mn), Gates Capital Management, Inc. (4.54Mn), GEODE CAPITAL MANAGEMENT, LLC (3.9Mn).

Form 13F Holdings

593 Institutional Holders

Report period 30 Jun, 2026

Total shares held 283.61Mn

Of outstanding 84.16%

#	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 593 holders