ATRA
Pharmaceuticals, Biotechnology & Life Sciences
CROWD: GREEN
Quiet institutional ownership. No unusual crowd behavior in the latest filings.
Active holders
8
of 33 total, index funds excluded
Streak
0q
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 · $12M held
| Fund | Value | Note |
|---|
| ADAGE CAPITAL PARTNERS GP, … |
$3M |
|
| Redmile Group, LLC |
$2M |
|
| MACKENZIE FINANCIAL CORP |
$1M |
|
| VANGUARD CAPITAL MANAGEMENT… |
$1M |
|
| Steve Cohen |
$919K |
famous whale |
| ACADIAN ASSET MANAGEMENT LLC |
$617K |
|
| EcoR1 Capital, LLC |
$471K |
|
| BlackRock, Inc. |
$374K |
|
| GEODE CAPITAL MANAGEMENT, L… |
$313K |
|
| UBS Group AG |
$237K |
|
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.