SIRI · Sirius Xm Holdings Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Holder Concentration
Across 612 13F filersWho Holds SIRI
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 599 filers, like-for-like change +8.2%; actively managed books +5.1%; index-like books +24.9%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 31.5% | 343 | +18.4% |
| Exempt adviser | 2.2% | 5 | +2.8% |
| Adviser | 1.2% | 17 | -24.2% |
| Bank | 5.1% | 25 | +33.4% |
| Insurer | 44.4% | 4 | -0.1% |
| Broker-dealer | 0.0% | 1 | -13.1% |
| Benefit plan | 0.2% | 7 | +9.7% |
| Non-US | 2.0% | 9 | -37.3% |
| Holding company | 8.1% | 8 | +42.6% |
| Unknown | 5.1% | 180 | +0.5% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 18.7% | 46 | +24.9% |
| Systematic-like | 2.5% | 19 | -6.2% |
| Concentrated | 49.7% | 144 | +0.1% |
| Diversified active | 29.1% | 390 | +16.1% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 76.9% | 392 | +7.4% |
| Medium turnover | 11.0% | 109 | +20.5% |
| High turnover | 4.5% | 49 | +2.6% |
| Unknown | 7.6% | 49 | +3.7% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 7.8% | 69 | -0.9% |
| Medium horizon | 7.5% | 99 | +64.1% |
| Long horizon | 81.7% | 401 | +5.5% |
| Unknown | 3.0% | 30 | +15.7% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 2.3% | 214 | +1.6% |
| $1B to $10B | 10.4% | 177 | +8.0% |
| $10B to $100B | 7.3% | 140 | +11.3% |
| $100B or more | 80.0% | 68 | +8.1% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 3.1% | 224 | +2.5% |
| Pooled investment vehicles | 6.6% | 40 | +21.5% |
| Registered funds and BDCs | 16.8% | 30 | +25.8% |
| Pension and profit sharing plans | 0.0% | 4 | -37.0% |
| Insurance companies | 0.1% | 6 | +1029.7% |
| Charitable organizations | 0.2% | 2 | +1.5% |
| Governments and sovereign funds | 0.5% | 5 | -56.6% |
| Corporations | 0.0% | 2 | -19.3% |
| Other investment advisers | 0.0% | 6 | +40.9% |
| Other | 0.0% | 1 | new |
| Diversified | 4.1% | 22 | +22.7% |
| Unknown | 68.5% | 257 | +4.0% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 13.8% | 63 | +28.2% |
| Private equity funds | 0.4% | 14 | +57.3% |
| Venture capital funds | 0.0% | 1 | +227.3% |
| Real estate funds | 0.0% | 6 | +97.4% |
| Liquidity funds | 0.0% | 1 | 0.0% |
| Securitized asset funds | 0.2% | 2 | +11.5% |
| Other private funds | 6.1% | 25 | +49.6% |
| Mixed private funds | 0.1% | 2 | +84.4% |
| Private funds, type not stated | 0.1% | 5 | -69.7% |
| No private funds | 12.9% | 228 | -1.5% |
| Unknown | 66.3% | 252 | +4.1% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 93.4% | 528 | +9.9% |
| Outside the US | 6.6% | 71 | -13.4% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 8 holders with no observed 2026-03-31 13F and 5 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
599 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 16.4% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies SIRI's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | LLYVA Liberty Live Holdings, Inc. | 16 |
| 2 | LBRDK Liberty Broadband Corp | 18 |
| 3 | GLIBA Liberty Capital Corp/NV | 8 |
| 4 | LBTYA Liberty Global Ltd. | 8 |
| 5 | PSFE Paysafe Ltd | 3 |
| 6 | MBI Mbia Inc | 4 |
| 7 | FWONA Liberty Media Corp | 13 |
| 8 | M Macy's, Inc. | 7 |
| 9 | WBD Warner Bros. Discovery, Inc. | 18 |
| 10 | STLA Stellantis N.V. | 8 |
Shareholder Targets
13F filers that own its peers but not SIRI, quarter ended Jun 30, 2026Found through its holder-overlap peers: LLYVA, LBRDK, GLIBA, LBTYA, PSFE, MBI, FWONA, M, WBD, STLA, LILA, GO, BFH, BRSP, VYX, CRD-A, LKQ, CMBT, MAN, TAP. 1,512 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | MILLENNIUM MANAGEMENT LLC Registered adviser, Systematic-like | $2,085,551,766 18 held | WBD, FWONA, LBRDK |
| 2 | D. E. Shaw & Co., Inc. Unknown, Systematic-like | $1,893,715,020 16 held | WBD, FWONA, LLYVA |
| 3 | T. Rowe Price Investment Management, Inc. Adviser, Diversified active | $1,547,209,825 3 held | LLYVA, FWONA, GO |
| 4 | Pentwater Capital Management LP Registered adviser, Concentrated | $1,356,972,359 2 held | WBD, LBRDK |
| 5 | Bpifrance SA Unknown, Unknown | $1,106,120,426 1 held | STLA |
| 6 | Linonia Partnership LP Registered adviser, Concentrated | $1,078,026,284 2 held | LLYVA, FWONA |
| 7 | Sessa Capital IM, L.P. Registered adviser, Concentrated | $804,220,361 1 held | WBD |
| 8 | Qube Research & Technologies Ltd Exempt adviser, Systematic-like | $788,966,997 11 held | WBD, FWONA, CMBT |
| 9 | Dodge & Cox Registered adviser, Diversified active | $770,584,569 2 held | TAP, LBTYA |
| 10 | AMERICAN CENTURY COMPANIES INC Unknown, Diversified active | $724,136,831 15 held | M, BFH, LBTYA |
Fund Ownership of SIRI by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 11.94% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 1.68% | 5,667,594 |
| Index ETFs | 10.26% | 34,581,862 |
| Active ETFs | 1.44% | 4,866,482 |
| Active funds | 3.68% | 12,419,439 |
| Unclassified | 0.45% | 1,523,162 |
| All registered funds | 17.52% | 59,058,539 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega Berkshire Hathaway Inc Insurer | $3,686,802,235 | 41.59% | 124,807,117 | Shares | 2026-08-14 | |
| Mega BlackRock, Inc. Holding company | $519,969,838 | 5.87% | 17,602,229 | Shares | 2026-08-07 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $310,534,875 | 3.50% | 10,512,352 | Shares | 2026-08-11 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $268,300,860 | 3.03% | 9,082,629 | Shares | 2026-08-13 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $247,745,599 | 2.79% | 8,386,784 | Shares | 2026-08-13 | |
| Mid Kontiki Capital Management (HK) Ltd. Exempt adviser | $179,686,620 | 2.03% | 6,082,824 | Shares | 2026-08-12 | |
| Mega STATE STREET CORP Bank | $177,018,361 | 2.00% | 5,992,497 | Shares | 2026-09-22 | |
| Mega Boston Partners Registered adviser | $150,087,008 | 1.69% | 5,080,806 | Shares | 2026-08-04 | |
| Mid Gates Capital Management, Inc. Registered adviser | $134,109,443 | 1.51% | 4,539,927 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $129,243,408 | 1.46% | 4,375,200 | Call | 2026-08-14 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $115,249,954 | 1.30% | 3,901,488 | Shares | 2026-08-12 | |
| Large LSV ASSET MANAGEMENT Registered adviser | $106,948,654 | 1.21% | 3,620,469 | Shares | 2026-08-06 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $100,326,933 | 1.13% | 3,396,308 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $97,793,646 | 1.10% | 3,310,550 | Shares | 2026-09-02 | |
| Mega Bank of New York Mellon Corp Bank | $88,981,565 | 1.00% | 3,012,240 | Shares | 2026-08-06 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $88,830,826 | 1.00% | 3,007,137 | Shares | 2026-08-14 | |
| Mid CHECK CAPITAL MANAGEMENT INC/CA Registered adviser | $86,487,182 | 0.98% | 2,927,799 | Shares | 2026-08-05 | |
| Mid J. Goldman & Co LP Registered adviser | $86,305,570 | 0.97% | 2,921,651 | Shares | 2026-08-14 | |
| Mega CANADA PENSION PLAN INVESTMENT BOARD Non-US | $69,860,120 | 0.79% | 2,364,933 | Shares | 2026-08-14 | |
| Mega NORGES BANK Non-US | $61,795,228 | 0.70% | 2,091,917 | Shares | 2026-08-12 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $52,009,098 | 0.59% | 1,760,633 | Shares | 2026-08-14 | |
| Large Squarepoint Ops LLC Registered adviser | $48,721,119 | 0.55% | 1,649,327 | Shares | 2026-08-14 | |
| Large Pacer Advisors, Inc. | $48,630,106 | 0.55% | 1,646,246 | Shares | 2026-08-13 | |
| Mega MORGAN STANLEY Holding company | $48,487,984 | 0.55% | 1,641,435 | Shares | 2026-08-13 | |
| Mega NORTHERN TRUST CORP Bank | $46,806,275 | 0.53% | 1,584,505 | Shares | 2026-08-13 | |
| Large Tidal Investments LLC Registered adviser | $45,043,271 | 0.51% | 1,524,823 | Shares | 2026-08-13 | |
| Large Tidal Investments LLC Registered adviser | $44,327,724 | 0.50% | 1,500,600 | Call | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $44,177,070 | 0.50% | 1,495,500 | Put | 2026-08-14 | |
| Large Penserra Capital Management LLC Registered adviser | $42,327,777 | 0.48% | 1,432,897 | Shares | 2026-08-13 | |
| Large Gotham Asset Management, LLC Registered adviser | $40,861,234 | 0.46% | 1,383,251 | Shares | 2026-08-14 | |
| Mid PRIVATE MANAGEMENT GROUP INC Registered adviser | $36,467,189 | 0.41% | 1,234,502 | Shares | 2026-07-31 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $35,448,000 | 0.40% | 1,200,000 | Call | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $35,099,398 | 0.40% | 1,188,199 | Shares | 2026-08-13 | |
| Mid WEITZ INVESTMENT MANAGEMENT, INC. Registered adviser | $35,093,520 | 0.40% | 1,188,000 | Shares | 2026-08-12 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $34,168,918 | 0.39% | 1,156,700 | Call | 2026-09-02 | |
| Mid DEPRINCE RACE & ZOLLO INC Registered adviser | $33,983,105 | 0.38% | 1,313,103 | Shares | 2026-10-13 | |
| Mid THOMPSON SIEGEL & WALMSLEY LLC Registered adviser | $31,683,274 | 0.36% | 1,072,555 | Shares | 2026-08-11 | |
| Mega JANE STREET GROUP, LLC | $31,395,112 | 0.35% | 1,062,800 | Call | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $30,658,797 | 0.35% | 1,037,874 | Shares | 2026-08-14 | |
| Mega BARCLAYS PLC Bank | $29,637,482 | 0.33% | 1,003,300 | Call | 2026-08-14 | |
| Small WITTENBERG INVESTMENT MANAGEMENT, INC. Adviser | $27,615,882 | 0.31% | 934,864 | Shares | 2026-08-12 | |
| Mega UBS Group AG Bank | $26,925,355 | 0.30% | 911,488 | Shares | 2026-08-13 | |
| Mega Allianz Asset Management GmbH | $26,798,303 | 0.30% | 907,187 | Shares | 2026-09-02 | |
| Mega FIRST TRUST ADVISORS LP Registered adviser | $26,058,061 | 0.29% | 882,128 | Shares | 2026-08-11 | |
| Mega RAYMOND JAMES FINANCIAL INC | $25,256,315 | 0.28% | 854,987 | Shares | 2026-08-14 | |
| Mid HBK INVESTMENTS L P Registered adviser | $25,074,881 | 0.28% | 848,845 | Shares | 2026-09-16 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $24,940,622 | 0.28% | 844,300 | Put | 2026-09-02 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $23,394,527 | 0.26% | 791,961 | Shares | 2026-08-14 | |
| Mid HBK INVESTMENTS L P Registered adviser | $22,846,236 | 0.26% | 773,400 | Call | 2026-09-16 | |
| Mega JPMORGAN CHASE & CO Bank | $21,816,441 | 0.25% | 738,539 | Shares | 2026-08-12 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $21,573,859 | 0.24% | 730,327 | Shares | 2026-08-14 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $21,520,124 | 0.24% | 728,508 | Shares | 2026-08-14 | |
| Mega Invesco Ltd. Adviser | $21,384,033 | 0.24% | 723,901 | Shares | 2026-08-14 | |
| Mid Empyrean Capital Partners, LP Registered adviser | $20,464,573 | 0.23% | 692,775 | Shares | 2026-08-14 | |
| Small Hi-Line Capital Management, LLC Registered adviser | $20,018,017 | 0.23% | 677,658 | Shares | 2026-07-24 | |
| Mega DEUTSCHE BANK AG\ Non-US | $19,521,183 | 0.22% | 660,839 | Shares | 2026-08-07 | |
| Mega ROYAL BANK OF CANADA Bank | $19,271,803 | 0.22% | 652,397 | Shares | 2026-08-14 | |
| Mega BARCLAYS PLC Bank | $19,198,046 | 0.22% | 649,900 | Put | 2026-08-14 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $18,992,412 | 0.21% | 642,939 | Shares | 2026-08-13 | |
| Large PANAGORA ASSET MANAGEMENT INC Registered adviser | $18,955,493 | 0.21% | 641,689 | Shares | 2026-08-06 | |
| Mega JANE STREET GROUP, LLC | $18,849,474 | 0.21% | 638,100 | Put | 2026-08-14 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $17,724,000 | 0.20% | 600,000 | Put | 2026-08-14 | |
| Small BISLETT MANAGEMENT, LLC Registered adviser | $17,724,000 | 0.20% | 600,000 | Shares | 2026-08-11 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $17,328,871 | 0.20% | 586,624 | Shares | 2026-08-14 | |
| Mid S&CO INC | $16,814,345 | 0.19% | 569,206 | Shares | 2026-08-06 | |
| Mega HSBC HOLDINGS PLC | $15,985,539 | 0.18% | 541,149 | Shares | 2026-08-14 | |
| Large ExodusPoint Capital Management, LP Registered adviser | $15,713,330 | 0.18% | 531,934 | Shares | 2026-08-14 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $15,234,516 | 0.17% | 515,725 | Shares | 2026-08-12 | |
| Large GABELLI FUNDS LLC Registered adviser | $15,095,944 | 0.17% | 511,034 | Shares | 2026-08-12 | |
| Large Walleye Trading LLC | $13,222,104 | 0.15% | 447,600 | Put | 2026-08-03 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $12,642,114 | 0.14% | 427,966 | Shares | 2026-08-04 | |
| Small CAPITAL MANAGEMENT CORP /VA Registered adviser | $12,595,590 | 0.14% | 426,391 | Shares | 2026-07-29 | |
| Large Walleye Trading LLC | $12,365,444 | 0.14% | 418,600 | Call | 2026-08-03 | |
| Small swisspartners Advisors Ltd Registered adviser | $12,216,828 | 0.14% | 413,569 | Shares | 2026-08-11 | |
| Small Chou Associates Management Inc. | $12,099,259 | 0.14% | 409,589 | Shares | 2026-08-12 | |
| Mid Advisors Asset Management, Inc. Registered adviser | $12,089,894 | 0.14% | 409,272 | Shares | 2026-08-14 | |
| Mid PDT Partners, LLC Registered adviser | $11,955,162 | 0.13% | 404,711 | Shares | 2026-08-14 | |
| Large GAMCO INVESTORS, INC. ET AL Registered adviser | $11,795,440 | 0.13% | 399,304 | Shares | 2026-08-12 | |
| Mega Swiss National Bank | $10,914,586 | 0.12% | 369,485 | Shares | 2026-08-11 | |
| Mega SEI INVESTMENTS CO | $10,743,224 | 0.12% | 363,684 | Shares | 2026-08-14 | |
| Large HUNTINGTON NATIONAL BANK | $10,399,290 | 0.12% | 352,041 | Shares | 2026-08-13 | |
| Small Fund 1 Investments, LLC Holding company | $10,314,570 | 0.12% | 349,173 | Shares | 2026-08-14 | |
| Mega FRANKLIN RESOURCES INC Adviser | $10,022,092 | 0.11% | 339,272 | Shares | 2026-08-13 | |
| Mega Creative Planning Registered adviser | $9,885,649 | 0.11% | 334,653 | Shares | 2026-08-13 | |
| Mid Cambria Investment Management, L.P. Registered adviser | $9,710,536 | 0.11% | 328,725 | Shares | 2026-08-14 | |
| Mega Legal & General Group Plc | $9,572,228 | 0.11% | 324,043 | Shares | 2026-08-14 | |
| Large PEAK6 LLC Broker-dealer | $9,378,950 | 0.11% | 317,500 | Call | 2026-08-13 | |
| Mega BARCLAYS PLC Bank | $9,052,561 | 0.10% | 306,451 | Shares | 2026-08-14 | |
| Mid Engineers Gate Manager LP | $8,951,476 | 0.10% | 303,029 | Shares | 2026-08-14 | |
| Mid WINTON GROUP Ltd | $8,819,551 | 0.10% | 298,563 | Shares | 2026-08-07 | |
| Mega Nuveen, LLC | $8,676,045 | 0.10% | 293,705 | Shares | 2026-08-11 | |
| Small TOWERVIEW LLC | $8,345,050 | 0.09% | 282,500 | Shares | 2026-08-04 | |
| Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. Non-US | $8,072,926 | 0.09% | 273,288 | Shares | 2026-08-13 | |
| Small PLUSTICK MANAGEMENT LLC Registered adviser | $7,975,800 | 0.09% | 270,000 | Shares | 2026-08-14 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $7,871,729 | 0.09% | 266,477 | Shares | 2026-08-14 | |
| Mid PEREGRINE CAPITAL MANAGEMENT LLC Registered adviser | $7,803,906 | 0.09% | 264,181 | Shares | 2026-07-17 | |
| Mid CastleKnight Management LP Registered adviser | $7,588,826 | 0.09% | 256,900 | Shares | 2026-08-14 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $7,298,949 | 0.08% | 247,087 | Shares | 2026-08-14 | |
| Mega CITIGROUP INC Bank | $6,694,825 | 0.08% | 226,636 | Shares | 2026-08-03 | |
| Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM Benefit plan | $6,692,405 | 0.08% | 226,554 | Shares | 2026-08-10 |
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