CROWD: RED
Active holders jumped 23 to 31 recently (35% in one quarter). Ten years of our own data says fast institutional pile-ins mark late money, not early money. Careful chasing this.
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.
31
of 71 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.
+13
5 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.
19 bps
median holder weight: token bet
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.
2q
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)
Top holders
by reported value · $434M held
Fund
Value
Note
MPM BIOIMPACT LLC
$109M
Vivo Capital, LLC
$56M
Artisan Partners Limited Pa…
$46M
Siren, L.L.C.
$39M
BAKER BROS. ADVISORS LP
$31M
ADAR1 Capital Management, L…
$21M
PERCEPTIVE ADVISORS LLC
$20M
Patient Square Capital LP
$14M
Octagon Capital Advisors LP
$12M
Redmile Group, LLC
$10M
Tourists vs true believers
every holder a dot · right = bigger bet in their own book, up = patient money
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.