The current institutional shareholding score of Sirius XM Holdings Inc is 3.00, ranking 50 out of 83 in the Media & Publishing industry. The latest institutional shareholding proportion is 46.74%, representing a quarter-over-quarter increase of 21.38%. The largest institutional shareholder is Warren Buffett, holding a total of 96.06M shares, representing 37.14% of shares outstanding, with 0.17% increase in holdings.