Across its top 20 institutional holders, SIRI's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 15/100, avg. turnover score 20/100).

Quarterly Activity

Recent Activity

+$1.7B

Total Buy Value

$1.5B

Total Sell Value

New buy112

Trim121

Add179

Sold out65

291

Net Buyers

186

Net Sellers

Smart Money Convergence

SIRI does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.

13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.

Insider Trading (Form 4)

Form 144 Pre-Sale Notices

No Form 144 planned sale filings in the last 90 days

Beneficial Ownership (13D/13G)

No Schedule 13D/13G filings for this ticker

Material Events (8-K)

No Form 8-K filings for this ticker

CUSIP

829933100, 82967N108

FAQ

Who are the top institutional investors holding SIRIUS XM HOLDINGS INC (SIRI)?

Major stakeholders currently include Berkshire Hathaway Inc ($2.9B), BlackRock, Inc. ($222.1M), Vanguard Portfolio Management LLC ($200.9M). Based on the latest 13F filings, there are a total of 559 tracked investment funds and institutions maintaining positions in SIRI.

What is the overall institutional sentiment toward SIRI recently?

Institutional sentiment appears Bullish (Net Buying). During the most recent reporting quarter, the stock experienced a net inflow of $842.2M, driven by 291 managers accumulating shares while 186 reduced their exposure.

Which institutions have been selling or reducing their SIRI positions?

In the latest period, 121 funds trimmed their holdings, and 65 managers completely exited their positions. The aggregate reported sell value was $1.5B.

Are there any notable investors adding SIRI to their portfolios?

Yes, buying activity remains notable. 112 institutions opened new positions in {ticker}, and 179 existing holders added to their shares. The total reported buy value for the quarter amounted to $1.7B.