Smart Money Radar / Tickers / SIRI

SIRISirius Xm Holdings Inc

Communication Services Media Cable & Satellite
CROWD: GREEN Quiet institutional ownership. No unusual crowd behavior in the latest filings.
Active holders?Institutions that actively chose this stock. Index funds and mega-diversified platforms (filers holding 1500+ names) are stripped out; they hold it automatically, not by decision.
317
of 552 total, index funds excluded
This quarter?Turnover of the active crowd vs the prior quarter: funds that opened a position vs funds that closed out entirely. The split shows texture: broad new interest vs a revolving door.
+78
65 out
Conviction?How big this position is inside the typical holder's own portfolio (median, in basis points). 1 bps is pocket lint they will not miss; 200+ bps is a bet they did real work on. Many holders at tiny weight is weaker than few holders at real weight.
n/a
Streak?How many quarters in a row the active holder count has risen. Persistence, not a buy signal: long streaks are how names end up crowded.
1q
consecutive rising quarters

The crowd, 2016 to now

active holders per quarter
2016Mar 2026
Holdings as of Mar 31, 2026, filed by May 16, 2026. Counts for the newest quarter keep settling for a few weeks as amendments land.

The tide

funds in (up) vs out (down)
Jun 23 Mar 26

Top holders

by reported value · $6.0B held
FundValueNote
Warren Buffett $2.9B famous whale
BlackRock, Inc. $222M
VANGUARD PORTFOLIO MANAGEME… $201M
VANGUARD CAPITAL MANAGEMENT… $192M
DIMENSIONAL FUND ADVISORS LP $145M
Kontiki Capital Management … $131M
GOLDMAN SACHS GROUP INC $90M
CANADA PENSION PLAN INVESTM… $89M
GEODE CAPITAL MANAGEMENT, L… $86M
STATE STREET CORP $82M

Tourists vs true believers

every holder a dot · right = bigger bet in their own book, up = patient money
TOURISTS: small bets, fast churn BELIEVERS: real weight, patient books POSITION WEIGHT IN THE HOLDER'S OWN BOOK (LOG) PATIENCE
Hover any dot for the fund and its bet size. Patience is measured from each filer's actual quarter-to-quarter turnover across our whole database.