SIRIUS XM HOLDINGS INC (SIRI) Institutional Shareholders
SIRIUS XM HOLDINGS INC (SIRI) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $5.81B in SIRI holdings during the latest filing period.
Berkshire Hathaway is currently the largest disclosed institutional shareholder of SIRI tracked by InsiderSet, reporting ownership valued at approximately $2.88B in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $3.79B, representing an estimated gain of +31.59% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 71% of the total disclosed SIRI value among the investors covered in this analysis. Major shareholders include Berkshire Hathaway, Blackrock, Inc., Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in SIRIUS XM HOLDINGS INC (SIRI).
This page ranks the largest institutional SIRI shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
570
Total Reported Value
$5.81B
Largest Holder
Berkshire Hathaway
Largest Position
$2.88B
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
88
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Berkshire Hathaway | Warren Buffett | 1.09% | 124,807,117 | $2,880,548,260 | $3,790,392,143 | +$909,843,883 | +31.59% |
| Blackrock, Inc. | 0.00% | 9,625,184 | $222,149,242 | $292,316,838 | +$70,167,596 | +31.59% | |
| Vanguard Portfolio Management Llc | 0.01% | 8,704,748 | $200,905,584 | $264,363,197 | +$63,457,613 | +31.59% | |
| Vanguard Capital Management Llc | 0.00% | 8,303,630 | $191,647,780 | $252,181,243 | +$60,533,463 | +31.59% | |
| Dimensional Fund Advisors Lp | 0.03% | 6,301,181 | $145,425,502 | $191,366,867 | +$45,941,365 | +31.59% | |
| Kontiki Capital Management (Hk) Ltd. | 9.22% | 5,696,724 | $131,480,390 | $173,009,508 | +$41,529,118 | +31.59% | |
| Goldman Sachs Group Inc | 0.01% | 3,913,128 | $90,314,992 | $118,841,697 | +$28,526,705 | +31.59% | |
| Canada Pension Plan Investment Board | 0.06% | 3,860,924 | $89,110,126 | $117,256,262 | +$28,146,136 | +31.59% | |
| Geode Capital Management, Llc | 0.01% | 3,706,711 | $85,570,838 | $112,572,813 | +$27,001,975 | +31.56% | |
| State Street Corp | 0.00% | 3,547,616 | $81,878,977 | $107,741,098 | +$25,862,121 | +31.59% | |
| Citadel Advisors Llc | 0.05% | 3,261,642 | $75,278,697 | $99,056,068 | +$23,777,371 | +31.59% | |
| Aqr Capital Management Llc | 0.03% | 2,988,907 | $68,296,535 | $90,773,106 | +$22,476,571 | +32.91% | |
| Check Capital Management Inc/Ca | 4.19% | 2,942,595 | $67,915,104 | $89,366,610 | +$21,451,506 | +31.59% | |
| Gates Capital Management, Inc. | 2.18% | 2,742,359 | $63,293,646 | $83,285,443 | +$19,991,797 | +31.59% | |
| Ameriprise Financial Inc | 0.01% | 2,414,999 | $55,738,184 | $73,343,520 | +$17,605,336 | +31.59% | |
| Bank Of New York Mellon Corp | 0.01% | 2,177,761 | $50,262,718 | $66,138,602 | +$15,875,884 | +31.59% | |
| Morgan Stanley | 0.00% | 2,156,763 | $49,778,110 | $65,500,892 | +$15,722,782 | +31.59% | |
| Seizert Capital Partners, Llc | 1.96% | 1,840,822 | $42,486,172 | $55,905,764 | +$13,419,592 | +31.59% | |
| Storebrand Asset Management As | 0.01% | 7,648,465 | $42,257,714 | $232,283,882 | +$190,026,168 | +449.68% | |
| Hsbc Holdings Plc | 0.02% | 1,795,954 | $41,601,825 | $54,543,123 | +$12,941,298 | +31.11% | |
| Two Sigma Investments, Lp | 0.03% | 1,777,219 | $41,018,215 | $53,974,141 | +$12,955,926 | +31.59% | |
| Charles Schwab Investment Management Inc | 0.01% | 1,740,191 | $40,163,608 | $52,849,601 | +$12,685,993 | +31.59% | |
| Private Management Group Inc | 0.96% | 1,234,502 | $36,467,189 | $37,491,826 | +$1,024,637 | +2.81% | |
| Weitz Investment Management, Inc. | 2.08% | 1,293,000 | $29,842,440 | $39,268,410 | +$9,425,970 | +31.59% | |
| Gotham Asset Management, Llc | 0.09% | 1,238,571 | $28,586,219 | $37,615,401 | +$9,029,182 | +31.59% | |
| Tidal Investments Llc | 0.09% | 1,208,449 | $27,891,003 | $36,700,596 | +$8,809,593 | +31.59% | |
| Ubs Group Ag | 0.00% | 1,180,876 | $27,254,618 | $35,863,204 | +$8,608,586 | +31.59% | |
| Hbk Investments L P | 0.34% | 1,164,203 | $26,869,805 | $35,356,845 | +$8,487,040 | +31.59% | |
| Vanguard Fiduciary Trust Co | 0.01% | 1,161,228 | $26,801,142 | $35,266,494 | +$8,465,352 | +31.59% | |
| Wittenberg Investment Management, Inc. | 9.50% | 1,107,416 | $25,559,161 | $33,632,224 | +$8,073,063 | +31.59% | |
| Northern Trust Corp | 0.00% | 1,096,087 | $25,297,688 | $33,288,162 | +$7,990,474 | +31.59% | |
| Raymond James Financial Inc | 0.01% | 953,340 | $22,003,086 | $28,952,936 | +$6,949,850 | +31.59% | |
| First Trust Advisors Lp | 0.02% | 952,013 | $21,972,450 | $28,912,635 | +$6,940,185 | +31.59% | |
| Healthcare Of Ontario Pension Plan Trust Fund | 0.03% | 901,000 | $20,795,080 | $27,363,370 | +$6,568,290 | +31.59% | |
| Susquehanna International Group, Llp | 0.03% | 899,785 | $20,767,038 | $27,326,470 | +$6,559,432 | +31.59% | |
| Hi-Line Capital Management, Llc | 5.63% | 677,658 | $20,018,017 | $20,580,473 | +$562,456 | +2.81% | |
| Allianz Asset Management Gmbh | 0.02% | 809,069 | $18,673,313 | $24,571,426 | +$5,898,113 | +31.59% | |
| Barclays Plc | 0.01% | 720,775 | $16,635,487 | $21,889,937 | +$5,254,450 | +31.59% | |
| Empyrean Capital Partners, Lp | 0.53% | 692,775 | $15,989,247 | $21,039,577 | +$5,050,330 | +31.59% | |
| Prudential Financial Inc | 0.02% | 691,237 | $15,953,750 | $20,992,868 | +$5,039,118 | +31.59% | |
| Bank Of America Corp | 0.00% | 668,355 | $15,425,630 | $20,297,941 | +$4,872,311 | +31.59% | |
| Panagora Asset Management Inc | 0.06% | 650,212 | $15,006,893 | $19,746,938 | +$4,740,045 | +31.59% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 614,562 | $14,184,091 | $18,664,248 | +$4,480,157 | +31.59% | |
| Jane Street Group, Llc | 0.02% | 609,494 | $14,067,122 | $18,510,333 | +$4,443,211 | +31.59% | |
| Bislett Management, Llc | 10.68% | 600,000 | $13,848,000 | $18,222,000 | +$4,374,000 | +31.59% | |
| Capital Management Corp | 1.89% | 426,391 | $12,595,603 | $12,949,495 | +$353,892 | +2.81% | |
| Millennium Management Llc | 0.01% | 509,053 | $11,748,943 | $15,459,940 | +$3,710,997 | +31.59% | |
| Pdt Partners, Llc | 0.65% | 475,186 | $10,967,293 | $14,431,399 | +$3,464,106 | +31.59% | |
| Advisors Asset Management, Inc. | 0.17% | 452,870 | $10,452,240 | $13,753,662 | +$3,301,422 | +31.59% | |
| Gabelli Funds Llc | 0.07% | 452,758 | $10,449,655 | $13,750,260 | +$3,300,605 | +31.59% |
Frequently asked questions about SIRI
Who owns the most SIRI stock?
The largest holders of SIRI are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for SIRIUS XM HOLDINGS INC (SIRI).
Is SIRI widely held by superinvestors?
Many widely followed stocks like SIRI appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly SIRI is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.