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Alto Neuroscience, Inc. (ANRO) institutional ownership

Latest close $27.23 Jul 22, 2026
Market cap$83M 52-week range SectorHealthcare
Funds holding · Q1 2026
101
reported ANRO position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
50 buyers · 51 sellers

Alto Neuroscience, Inc. (ANRO) price and institutional activity

Dates

Q1 2026

$0 bought by 50 investors
Spruce Street Capital LPCommodore Capital LP +48 more
$0 sold by 51 investors
Point72 Asset Management, L.P.Armistice Capital, LLC +49 more
Bought Sold Totals per quarter; hover a bar for the names.

Alto Neuroscience, Inc. (ANRO) institutional activity · 101

Investor Type Est. change Change Δ Own Date
Point72 Asset Management, L.P. · Reduced
Change −1.1M Δ Own −68.7% Date Q1 2026
Point72 Asset Management, L.P. Reduced· Q1 2026 −1.1M −68.7% Q1 2026
Spruce Street Capital LP · Added
Change +1.1M Date Q1 2026
Spruce Street Capital LP Added· Q1 2026 +1.1M Q1 2026
Commodore Capital LP · Added
Change +900K Date Q1 2026
Commodore Capital LP Added· Q1 2026 +900K Q1 2026
Armistice Capital, LLC · Reduced
Change −624K Date Q1 2026
Armistice Capital, LLC Reduced· Q1 2026 −624K Q1 2026
Affinity Asset Advisors, LLC · New
Change +500K Date Q1 2026
Affinity Asset Advisors, LLC New· Q1 2026 +500K Q1 2026
Venrock Adviser, LLC · New
Change +500K Date Q1 2026
Venrock Adviser, LLC New· Q1 2026 +500K Q1 2026
Vestal Point Capital, LP · Reduced
Change −421K Date Q1 2026
Vestal Point Capital, LP Reduced· Q1 2026 −421K Q1 2026
Jennison Associates LLC · New
Change +386K Date Q1 2026
Jennison Associates LLC New· Q1 2026 +386K Q1 2026
Adage Capital Partners Gp, L.L.C. · New
Change +385K Date Q1 2026
Adage Capital Partners Gp, L.L.C. New· Q1 2026 +385K Q1 2026
T. Rowe Price Associates · Added
Change +341K Date Q1 2026
T. Rowe Price Associates Added· Q1 2026 +341K Q1 2026
Peapod Lane Capital LLC · Exited
Change −254K Δ Own −100.0% Date Q1 2026
Peapod Lane Capital LLC Exited· Q1 2026 −254K −100.0% Q1 2026
Alkeon Capital Management LLC · Reduced
Change −250K Date Q1 2026
Alkeon Capital Management LLC Reduced· Q1 2026 −250K Q1 2026
Perceptive Advisors LLC · Added
Change +226K Date Q1 2026
Perceptive Advisors LLC Added· Q1 2026 +226K Q1 2026
Northwestern Mutual Wealth Management Co · Exited
Change −213K Δ Own −100.0% Date Q1 2026
Northwestern Mutual Wealth Management Co Exited· Q1 2026 −213K −100.0% Q1 2026
Millennium Management LLC · Added
Change +192K Date Q1 2026
Millennium Management LLC Added· Q1 2026 +192K Q1 2026
Data through Q1 2026 · filed Jun 2, 2026
15 of 101

Famous investor activity in Alto Neuroscience, Inc. (ANRO)

Alto Neuroscience, Inc. (ANRO) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Miller Andrew Craig · Director Grant (A) 26K
Owned 26K Trade date May 27, 2026 Filed date May 29, 2026
Miller Andrew Craig Director Grant (A) 26K 26K May 27, 2026 May 29, 2026
Etkin Amit · Director Gift (G) -400K
Owned 834K Trade date May 14, 2026 Filed date May 15, 2026
Etkin Amit Director Gift (G) -400K 834K May 14, 2026 May 15, 2026
Sanchez Ramiro · Director Grant (A) 11K
Owned 11K Trade date May 12, 2026 Filed date May 14, 2026
Sanchez Ramiro Director Grant (A) 11K 11K May 12, 2026 May 14, 2026
Cox Christopher Nixon · Director Grant (A) 11K
Owned 11K Trade date May 12, 2026 Filed date May 14, 2026
Cox Christopher Nixon Director Grant (A) 11K 11K May 12, 2026 May 14, 2026
Manji Husseini · Director Grant (A) 11K
Owned 11K Trade date May 12, 2026 Filed date May 14, 2026
Manji Husseini Director Grant (A) 11K 11K May 12, 2026 May 14, 2026
Dreyfus Andrew · Director Grant (A) 11K
Owned 11K Trade date May 12, 2026 Filed date May 14, 2026
Dreyfus Andrew Director Grant (A) 11K 11K May 12, 2026 May 14, 2026
York Gwill · Director Grant (A) 11K
Owned 11K Trade date May 12, 2026 Filed date May 14, 2026
York Gwill Director Grant (A) 11K 11K May 12, 2026 May 14, 2026
Etkin Amit · Director Tax withholding or exercise payment (F) -$123K
Price $19.69 Qty -6K Owned 1.2M Trade date Mar 1, 2026 Filed date Mar 3, 2026
Etkin Amit Director Tax withholding or exercise payment (F) $19.69 -6K -$123K 1.2M Mar 1, 2026 Mar 3, 2026
Smith Nicholas Conrad · Officer Tax withholding or exercise payment (F) -$55K
Price $19.69 Qty -3K Owned 24K Trade date Mar 1, 2026 Filed date Mar 3, 2026
Smith Nicholas Conrad Officer Tax withholding or exercise payment (F) $19.69 -3K -$55K 24K Mar 1, 2026 Mar 3, 2026
Etkin Amit · Director, Officer Grant (A) 306K
Owned 306K Trade date Feb 11, 2026 Filed date Feb 13, 2026
Etkin Amit Director, Officer Grant (A) 306K 306K Feb 11, 2026 Feb 13, 2026
Savitz Adam · Officer Grant (A) 124K
Owned 124K Trade date Feb 11, 2026 Filed date Feb 13, 2026
Savitz Adam Officer Grant (A) 124K 124K Feb 11, 2026 Feb 13, 2026
Smith Nicholas Conrad · CFO Grant (A) 200K
Owned 200K Trade date Feb 11, 2026 Filed date Feb 13, 2026
Smith Nicholas Conrad CFO Grant (A) 200K 200K Feb 11, 2026 Feb 13, 2026
Hanley Jr. Michael Conick · Officer Grant (A) 131K
Owned 131K Trade date Feb 11, 2026 Filed date Feb 13, 2026
Hanley Jr. Michael Conick Officer Grant (A) 131K 131K Feb 11, 2026 Feb 13, 2026
York Gwill · Director Grant (A) $62K
Price $11.82 Qty 5K Owned 5K Trade date Jan 2, 2026 Filed date Jan 6, 2026
York Gwill Director Grant (A) $11.82 5K $62K 5K Jan 2, 2026 Jan 6, 2026
Cox Christopher Nixon · Director Grant (A) $85K
Price $11.82 Qty 7K Owned 7K Trade date Jan 2, 2026 Filed date Jan 6, 2026
Cox Christopher Nixon Director Grant (A) $11.82 7K $85K 7K Jan 2, 2026 Jan 6, 2026
15 of 18
15 of 18 Sign in to continue to older insider transactions.

Alto Neuroscience, Inc. (ANRO) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Alpha Wave Global, LP 3.7M
% of shares outstanding 13.8% Filing date Feb 9, 2024
Alpha Wave Global, LP 3.7M 13.8% Feb 9, 2024
Commodore Capital LP 3.6M
% of shares outstanding 9.9% Filing date May 15, 2026
Commodore Capital LP 3.6M 9.9% May 15, 2026
FMR LLC 2.4M
% of shares outstanding 8.8% Filing date Nov 12, 2024
FMR LLC 2.4M 8.8% Nov 12, 2024
Sirenia Capital Management LP 2.6M
% of shares outstanding 7.9% Filing date May 15, 2026
Sirenia Capital Management LP 2.6M 7.9% May 15, 2026
Ra Capital Management, L.P. 2.1M
% of shares outstanding 7.7% Filing date Nov 14, 2024
Ra Capital Management, L.P. 2.1M 7.7% Nov 14, 2024
Vestal Point Capital, LP 2.1M
% of shares outstanding 6.5% Filing date May 15, 2026
Vestal Point Capital, LP 2.1M 6.5% May 15, 2026
Armistice Capital, LLC 1.6M
% of shares outstanding 6.0% Filing date Aug 14, 2025
Armistice Capital, LLC 1.6M 6.0% Aug 14, 2025
Ecor1 Capital, LLC 2.2M
% of shares outstanding 5.8% Filing date Jul 20, 2026
Ecor1 Capital, LLC 2.2M 5.8% Jul 20, 2026
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Alto Neuroscience, Inc. (ANRO) ownership FAQ

Who owns ANRO?

101 reporting institutions disclosed ANRO position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.