Alto Neuroscience ANRO Institutional Ownership

NYSE ANRO

$35.67 -0.73 (-2.01%)

As of: Sep 4, 2026 · 2:28 PM EDT

Institutions by Trading Activity

115 Institutions

Increased 68 59.1%

Unchanged 21 18.3%

Reduced 26 22.6%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

69.03%

▼-12.54 pp QoQ

Shares Held by Institutions

29.55Mn

of 42.81Mn outstanding

▲+14.52% QoQ

Shares Outstanding

42.81Mn

13.26Mn held outside 13F filers

Institutional Investors

115

filed 13F for Jun 2026

▲+6 vs prior quarter

Net Shares Added (QoQ)

+3.75Mn

accumulated since last quarter

Value of Holdings

$1.07Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Alto Neuroscience, Inc. (NYSE:ANRO) showed up in the 13F filings of 115 institutional investors as of June 2026.

These investors collectively held 69.0% of Alto Neuroscience's outstanding shares in June 2026, down from 81.6% in March 2026.
They increased total shares held in ANRO by 14.52% quarter over quarter, and investors in Alto Neuroscience increased 45.57% from a year ago.
Of these 115 funds, 68 grew their exposure to Alto Neuroscience, 26 cut back, and 21 maintained positions.
In total, institutional investors held 29.55Mn shares in Alto Neuroscience as of June 2026, up by 3.75Mn shares quarter on quarter, and up 12.24Mn shares year over year.
As of June 30, 2026, the biggest holder of Alto Neuroscience is Alpha Wave Global, LP at 3.71Mn shares, representing 8.66% of shares outstanding.
The biggest buyers of Alto Neuroscience for the quarter ending June 2026 included BlackRock, Inc. (1.45Mn), ADAGE CAPITAL PARTNERS GP, L.L.C. (1.21Mn), State Street Corp (486.44K), Parkman Healthcare Partners LLC (429.04K), GEODE CAPITAL MANAGEMENT, LLC (385.3K).
Leading sellers of Alto Neuroscience shares for the quarter ending June 2026 were Vestal Point Capital, LP (1.28Mn), PERCEPTIVE ADVISORS LLC (400.0K), MILLENNIUM MANAGEMENT LLC (263.66K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (230.5K), ALKEON CAPITAL MANAGEMENT LLC (125.0K).
Business Quant data shows the 10 biggest positions in Alto Neuroscience as of June 2026 are held by Alpha Wave Global, LP (3.71Mn), Commodore Capital LP (2.72Mn), BlackRock, Inc. (2.12Mn), PERCEPTIVE ADVISORS LLC (1.61Mn), ADAGE CAPITAL PARTNERS GP, L.L.C. (1.6Mn), VANGUARD CAPITAL MANAGEMENT LLC (1.39Mn), Spruce Street Capital LP (1.35Mn), Vivo Capital, LLC (1.21Mn), Franklin Resources Inc (1.01Mn), ARMISTICE CAPITAL, LLC (864.0K).

Form 13F Holdings

115 Institutional Holders

Report period 30 Jun, 2026

Total shares held 29.55Mn

Of outstanding 69.03%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Alpha Wave Global, LP	0001558858	3,707,757	8.66%	0	0.00%	$97.85Mn
2	Commodore Capital LP	0001831942	2,723,196	6.36%	0	0.00%	$71.87Mn
3	BlackRock, Inc.	0002012383	2,121,009	4.95%	▲1,454,821	+218.38%	$55.97Mn
4	PERCEPTIVE ADVISORS LLC	0001224962	1,609,893	3.76%	▼400,000	-19.90%	$42.49Mn
5	ADAGE CAPITAL PARTNERS GP, L.L.C.	0001165408	1,600,000	3.74%	▲1,215,000	+315.58%	$42.22Mn
6	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	1,389,477	3.25%	▲182,452	+15.12%	$36.67Mn
7	Spruce Street Capital LP	0002050194	1,353,047	3.16%	▲27,837	+2.10%	$35.71Mn
8	Vivo Capital, LLC	0001674712	1,208,858	2.82%	▲173,307	+16.74%	$31.90Mn
9	Franklin Resources Inc	0000038777	1,013,307	2.37%	▼88,567	-8.04%	$26.74Mn
10	ARMISTICE CAPITAL, LLC	0001601086	864,000	2.02%	▼48,000	-5.26%	$22.80Mn
11	Affinity Asset Advisors, LLC	0001773195	850,000	1.99%	▲350,000	+70.00%	$22.43Mn
12	Vestal Point Capital, LP	0001974915	785,000	1.83%	▼1,279,075	-61.97%	$20.72Mn
13	State Street Corp	0000093751	685,945	1.60%	▲486,442	+243.83%	$18.10Mn
14	GEODE CAPITAL MANAGEMENT, LLC	0001214717	678,199	1.58%	▲385,300	+131.55%	$17.90Mn
15	72 Investment Holdings, LLC	0001832749	667,778	1.56%	0	0.00%	$17.62Mn
16	Northern Trust Corp	0000073124	632,701	1.48%	▲159,298	+33.65%	$16.70Mn
17	MILLENNIUM MANAGEMENT LLC	0001273087	558,320	1.30%	▼263,662	-32.08%	$14.73Mn
18	Point72 Asset Management, L.P.	0001603466	502,950	1.17%	▼137	-0.03%	$13.27Mn
19	Integral Health Asset Management, LLC	0001773206	500,000	1.17%	0	0.00%	$13.20Mn
19	Venrock Adviser, LLC	0001615982	500,000	1.17%	0	0.00%	$13.20Mn

Showing 1 to 20 of 115 holders