Security key
02157Q109
Alto Neuroscience, Inc. - Common Stock, par value $0.0001 per share (ANRO)
CUSIP: 02157Q109
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Common Stock, par value $0.0001 per share
- Total 13F shares
- 24,487,002
- Total 13F value
- $435,860,904
- Share change
- +7,554,448
- Put/Call ratio
- 0%
- SEC-reported price per share
- $17.80
- Number of holders
- 96
- Value change
- +$135,656,607
- Number of buys
- 52
- Number of sells
- 32
- Shares outstanding
- 35,799,484
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2025
Institutions
96
Top holders
10
ANRO full security history
Ownership snapshot
Full 13F holder table
Alto Neuroscience, Inc. SEC filings
Alto Neuroscience, Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of ANRO - Alto Neuroscience, Inc. - Common Stock, par value $0.0001 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
ARMISTICE CAPITAL, LLC
Disclosed value leader
Divisadero Street Capital...
Comparable rows
15/15
Latest evidence
31 Dec 2025
13F
13D/G
3/4/5
Lead comparable stake: 4.9%
13D/G row: ARMISTICE CAPITAL, LLC
Showing 1-6 of 15 holder rows.
Quick read
ARMISTICE CAPITAL, LLC leads the comparable SEC ownership view at 4.9%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens ARMISTICE CAPITAL, LLC's linked filing trail.
Comparable ownership
Top 5
ARMISTICE CAPITAL, LLC
4.9%
FMR LLC
4.7%
K2 HealthVentures Equity Trust LLC
2.4%
Alpha Wave Global, LP
10%
Divisadero Street Capital Managem...
8.9%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| ARMISTICE CAPITAL, LLC |
13F
13D/G
Company
|
4.9%
from 13D/G
|
$24,850,840
3,272,000 shares
mixed-class rows
|
— | 30 Sep 2025 |
| FMR LLC |
13D/G
13F
Company
|
4.7%
|
$2,885,445
1,265,546 shares
|
$0 | 31 Dec 2024 |
| K2 HealthVentures Equity Trust LLC |
13D/G
|
2.4%
|
$13,018,418
788,995 shares
|
-$13,676,190 | 31 Dec 2025 |
| Alpha Wave Global, LP |
13F
3/4/5
Company · 10%+ Owner
|
10%
|
$14,905,183
3,707,757 shares
|
— | 30 Sep 2025 |
| Divisadero Street Capital Management, LP |
13F
Company
|
8.9%
|
$41,084,656
3,678,125 shares
|
— | 30 Sep 2025 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP |
13F
Company
|
6.2%
|
$28,712,561
2,570,506 shares
|
— | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
96
Shares
24,487,002
Rows available
96
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
74
Q4 2025 holders
96
Holder diff
22
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|