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 $8.29B 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 $3.69B in its June 30, 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 $3.56B, representing an estimated loss of -3.32% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 70% of the total disclosed SIRI value among the investors covered in this analysis. Major shareholders include Berkshire Hathaway, Blackrock, Inc., Dimensional Fund Advisors Lp, 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
583
Total Reported Value
$8.29B
Largest Holder
Berkshire Hathaway
Largest Position
$3.69B
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
62
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 | 1.23% | 124,807,117 | $3,686,802,237 | $3,564,491,262 | -$122,310,975 | -3.32% |
| Blackrock, Inc. | 0.01% | 17,602,229 | $519,969,849 | $502,719,660 | -$17,250,189 | -3.32% | |
| Dimensional Fund Advisors Lp | 0.06% | 10,512,352 | $310,527,367 | $300,232,773 | -$10,294,594 | -3.32% | |
| Vanguard Portfolio Management Llc | 0.01% | 9,082,629 | $268,300,861 | $259,399,884 | -$8,900,977 | -3.32% | |
| Vanguard Capital Management Llc | 0.01% | 8,386,784 | $247,745,599 | $239,526,551 | -$8,219,048 | -3.32% | |
| Kontiki Capital Management (Hk) Ltd. | 11.78% | 6,082,824 | $179,686,621 | $173,725,453 | -$5,961,168 | -3.32% | |
| State Street Corp | 0.01% | 5,992,497 | $177,018,361 | $171,145,714 | -$5,872,647 | -3.32% | |
| Boston Partners | 0.13% | 5,080,806 | $150,170,810 | $145,107,819 | -$5,062,991 | -3.37% | |
| Gates Capital Management, Inc. | 4.40% | 4,539,927 | $134,109,444 | $129,660,315 | -$4,449,129 | -3.32% | |
| Geode Capital Management, Llc | 0.01% | 3,901,488 | $115,276,087 | $111,426,497 | -$3,849,590 | -3.34% | |
| Lsv Asset Management | 0.19% | 3,620,469 | $106,949,000 | $103,400,595 | -$3,548,405 | -3.32% | |
| Aqr Capital Management Llc | 0.03% | 3,396,308 | $98,374,052 | $96,998,556 | -$1,375,496 | -1.40% | |
| Citadel Advisors Llc | 0.06% | 3,310,550 | $97,793,647 | $94,549,308 | -$3,244,339 | -3.32% | |
| Bank Of New York Mellon Corp | 0.01% | 3,012,240 | $88,981,571 | $86,029,574 | -$2,951,997 | -3.32% | |
| Goldman Sachs Group Inc | 0.01% | 3,007,137 | $88,830,827 | $85,883,833 | -$2,946,994 | -3.32% | |
| Check Capital Management Inc/Ca | 4.98% | 2,927,799 | $86,487,194 | $83,617,939 | -$2,869,255 | -3.32% | |
| J. Goldman & Co Lp | 3.04% | 2,921,651 | $86,305,571 | $83,442,353 | -$2,863,218 | -3.32% | |
| Canada Pension Plan Investment Board | 0.04% | 2,364,933 | $69,860,121 | $67,542,486 | -$2,317,635 | -3.32% | |
| Norges Bank | 0.01% | 2,091,917 | $61,795,228 | $59,745,150 | -$2,050,078 | -3.32% | |
| Charles Schwab Investment Management Inc | 0.01% | 1,760,633 | $52,009,092 | $50,283,678 | -$1,725,414 | -3.32% | |
| Squarepoint Ops Llc | 0.09% | 1,649,327 | $48,721,120 | $47,104,779 | -$1,616,341 | -3.32% | |
| Pacer Advisors, Inc. | 0.13% | 1,646,246 | $48,630,000 | $47,016,786 | -$1,613,214 | -3.32% | |
| Morgan Stanley | 0.00% | 1,641,435 | $48,488,054 | $46,879,384 | -$1,608,670 | -3.32% | |
| Northern Trust Corp | 0.01% | 1,584,505 | $46,806,278 | $45,253,463 | -$1,552,815 | -3.32% | |
| Tidal Investments Llc | 0.11% | 1,524,823 | $45,043,271 | $43,548,945 | -$1,494,326 | -3.32% | |
| Penserra Capital Management Llc | 0.33% | 1,432,897 | $42,327,000 | $40,923,538 | -$1,403,462 | -3.32% | |
| Gotham Asset Management, Llc | 0.10% | 1,383,251 | $40,861,235 | $39,505,649 | -$1,355,586 | -3.32% | |
| Private Management Group Inc | 0.96% | 1,234,502 | $36,467,189 | $35,257,377 | -$1,209,812 | -3.32% | |
| Vanguard Fiduciary Trust Co | 0.01% | 1,188,199 | $35,099,398 | $33,934,963 | -$1,164,435 | -3.32% | |
| Weitz Investment Management, Inc. | 2.43% | 1,188,000 | $35,093,520 | $33,929,280 | -$1,164,240 | -3.32% | |
| Deprince Race & Zollo Inc | 0.56% | 1,120,872 | $33,110,559 | $32,012,104 | -$1,098,455 | -3.32% | |
| Thompson Siegel & Walmsley Llc | 0.57% | 1,072,555 | $31,683,000 | $30,632,171 | -$1,050,829 | -3.32% | |
| Susquehanna International Group, Llp | 0.03% | 1,037,874 | $30,658,798 | $29,641,681 | -$1,017,117 | -3.32% | |
| Wittenberg Investment Management, Inc. | 9.44% | 934,864 | $27,615,883 | $26,699,716 | -$916,167 | -3.32% | |
| Ubs Group Ag | 0.00% | 911,488 | $26,925,355 | $26,032,097 | -$893,258 | -3.32% | |
| Allianz Asset Management Gmbh | 0.02% | 907,187 | $26,798,304 | $25,909,261 | -$889,043 | -3.32% | |
| First Trust Advisors Lp | 0.02% | 882,128 | $26,058,061 | $25,193,576 | -$864,485 | -3.32% | |
| Raymond James Financial Inc | 0.01% | 854,987 | $25,256,305 | $24,418,429 | -$837,876 | -3.32% | |
| Hbk Investments L P | 0.29% | 848,845 | $25,074,881 | $24,243,013 | -$831,868 | -3.32% | |
| Two Sigma Investments, Lp | 0.02% | 791,961 | $23,394,528 | $22,618,406 | -$776,122 | -3.32% | |
| Jpmorgan Chase & Co | 0.00% | 738,539 | $21,845,146 | $21,092,674 | -$752,472 | -3.44% | |
| Price T Rowe Associates Inc | 0.00% | 730,327 | $21,575,000 | $20,858,139 | -$716,861 | -3.32% | |
| Ameriprise Financial Inc | 0.00% | 728,508 | $21,548,142 | $20,806,188 | -$741,954 | -3.44% | |
| Invesco Ltd. | 0.00% | 723,901 | $21,384,035 | $20,674,613 | -$709,422 | -3.32% | |
| Empyrean Capital Partners, Lp | 0.72% | 692,775 | $20,464,574 | $19,785,654 | -$678,920 | -3.32% | |
| Hi-Line Capital Management, Llc | 5.63% | 677,658 | $20,018,017 | $19,353,912 | -$664,105 | -3.32% | |
| Deutsche Bank Ag\ | 0.01% | 660,839 | $19,521,183 | $18,873,562 | -$647,621 | -3.32% | |
| Royal Bank Of Canada | 0.00% | 652,397 | $19,271,000 | $18,632,458 | -$638,542 | -3.31% | |
| Panagora Asset Management Inc | 0.06% | 641,689 | $18,955,493 | $18,326,638 | -$628,855 | -3.32% | |
| Bislett Management, Llc | 12.01% | 600,000 | $17,724,000 | $17,136,000 | -$588,000 | -3.32% |
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.