13F Insight
DOSSIER · 13F Holders · Q1 2026High-convictionMulti-bagger
ANRO

ALTO NEUROSCIENCE INC

113 institutions still hold ALTO NEUROSCIENCE INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 02157Q109·113 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 3.9%
vs prior quarter
13F value held
$499M
77.0% inst. owned
of float
Holders
113
+64 QoQ
filers reporting
Activity
+92 / −98
+912 added · −793 reduced
this quarter
Concentration
16.69%
Alpha Wave Global, LP #1
top holder share
AI Holders Summary · Q1 2026

113 institutions reported ANRO in Q1 2026. Alpha Wave Global, LP leads at 16.7% of the visible book. +64 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Alpha Wave Global, LP
CIK 0001558858
$83M3.7M10.54%Q1 202602
Commodore Capital LP
CIK 0001831942
$61M2.7M3.54%Q1 202603
Vestal Point Capital, LP
CIK 0001974915
$46M2.1M1.30%Q1 202604
PERCEPTIVE ADVISORS LLC
CIK 0001224962
$45M2.0M0.88%Q1 202605
Spruce Street Capital LP
CIK 0002050194
$29M1.3M7.00%Q1 202606
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$27M1.2M0.00%Q1 202607
FRANKLIN RESOURCES INC
CIK 0000038777
$25M1.1M0.01%Q1 202608
Vivo Capital, LLC
CIK 0001674712
$23M1.0M1.94%Q1 202609
ARMISTICE CAPITAL, LLC
CIK 0001601086
$21M912K0.36%Q1 202610
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$18M822K0.01%Q1 202611
72 Investment Holdings, LLC
CIK 0001832749
$15M668K30.26%Q1 202612
BlackRock, Inc.
CIK 0002012383
$15M666K0.00%Q1 202613
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$14M638K0.00%Q1 202614
Ikarian Capital, LLC
CIK 0001778253
$12M515K0.94%Q1 202615
Point72 Asset Management, L.P.
CIK 0001603466
$11M503K0.01%Q1 202616
Affinity Asset Advisors, LLC
CIK 0001773195
$11M500K0.58%Q1 202617
Integral Health Asset Management, LLC
CIK 0001773206
$11M500K0.54%Q1 202618
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 0000938206
$11M487K0.08%Q1 202619
NORTHERN TRUST CORP
CIK 0000073124· Index
$11M473K0.00%Q1 202620
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 0001165408
$9M385K0.01%Q1 2026
Page 1 of 6
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