ANRO · Alto Neuroscience, Inc.

$35.28 -0.27 (-0.76%)

Russell 2000 member Rebalance outlook locked

Market Cap

$1.40B

39.24M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Quarter:

Holders: 116

Total Value: $780,367,195

Total Shares: 29,570,567

Showing 1–100 of 118 holdings by value · page 1 of 2

Institutional Ownership Trend

10 quarters

Holder Concentration

Across 116 13F filers · Δ vs Mar 31, 2026

Top Holder

12.5%

−1.0 pts

Top 5

39.8%

−3.5 pts

Top 10

59.5%

−2.4 pts

HHI

494

Broadly held−48

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +5

Institutional value: +27.1%

Shares held: +8.3%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega BlackRock, Inc.	+1,454,821	2,121,009
Large ADAGE CAPITAL PARTNERS GP, L.L.C.	+1,215,000	1,600,000
Mega STATE STREET CORP	+486,442	685,945
Mega GEODE CAPITAL MANAGEMENT, LLC	+385,300	678,199
Mid Affinity Asset Advisors, LLC	+350,000	850,000

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mid Vestal Point Capital, LP	−1,279,075	785,000
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	−568,300	69,298
Mid PERCEPTIVE ADVISORS LLC	−400,000	1,609,893
Mega MILLENNIUM MANAGEMENT LLC	−263,662	558,320
Large ALKEON CAPITAL MANAGEMENT LLC	−125,000	102,101

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Small Parkman Healthcare Partners LLC	429,035	$11,322,233
Large Schonfeld Strategic Advisors LLC	257,631	$6,798,882
Mega VANGUARD PORTFOLIO MANAGEMENT LLC	181,101	$4,779,255
Mega Bank of New York Mellon Corp	76,330	$2,014,347
Mega Nuveen, LLC	62,342	$1,645,204

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mega JENNISON ASSOCIATES LLC	386,426	$8,686,856
Mega Qube Research & Technologies Ltd	209,268	$4,704,344
Small Almitas Capital LLC	78,520	$1,765,129
Mega D. E. Shaw & Co., Inc.	45,343	$1,019,310
Large Hudson Bay Capital Management LP	43,762	$983,769

Filter: New 27 Increased 39 Reduced 30 Sold out 22 Unchanged 20

Showing 100 of 118

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

Alpha Wave Global, LP

$97,847,707

12.54%

3,707,757

Commodore Capital LP

$71,865,142

9.21%

2,723,196

BlackRock, Inc.

$55,973,424

7.17%

2,121,009

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	11,150	$294,248	0.5%	Sole
BlackRock Investment Management, LLC	77,298	$2,039,894	3.6%	Sole
BLACKROCK ADVISORS LLC	59,138	$1,560,651	2.8%	Sole
BlackRock Fund Advisors	1,270,643	$33,532,268	59.9%	Sole
BlackRock Institutional Trust Company, N.A.	695,707	$18,359,707	32.8%	Sole
Aperio Group, LLC	7,073	$186,656	0.3%	Sole

PERCEPTIVE ADVISORS LLC

$42,485,076

5.44%

1,609,893

ADAGE CAPITAL PARTNERS GP, L.L.C.

$42,224,000

5.41%

1,600,000

VANGUARD CAPITAL MANAGEMENT LLC

$36,668,298

4.70%

1,389,477

Spruce Street Capital LP

$35,706,910

4.58%

1,353,047

Vivo Capital, LLC

$31,901,762

4.09%

1,208,858

FRANKLIN RESOURCES INC

$26,741,171

3.43%

1,013,307

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FRANKLIN ADVISERS INC	1,013,307	$26,741,171	100.0%	Defined

ARMISTICE CAPITAL, LLC

$22,800,960

2.92%

864,000

Affinity Asset Advisors, LLC

$22,431,500

2.87%

850,000

Vestal Point Capital, LP

$20,716,150

2.65%

785,000

STATE STREET CORP

$18,102,088

2.32%

685,945

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	685,945	$18,102,088	100.0%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$17,897,671

2.29%

678,199

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	106,501	$2,810,561	15.7%	Defined
Held directly	571,698	$15,087,110	84.3%	Defined

72 Investment Holdings, LLC

$17,622,661

2.26%

667,778

NORTHERN TRUST CORP

$16,696,977

2.14%

632,701

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	628,586	$16,588,383	99.3%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	4,115	$108,594	0.7%	Other

MILLENNIUM MANAGEMENT LLC

$14,734,064

1.89%

558,320

Point72 Asset Management, L.P.

$13,272,850

1.70%

502,950

Venrock Adviser, LLC

$13,195,000

1.69%

500,000

Integral Health Asset Management, LLC

$13,195,000

1.69%

500,000

Driehaus Capital Management LLC

$12,867,130

1.65%

487,576

Parkman Healthcare Partners LLC

$11,322,233

1.45%

429,035

Ikarian Capital, LLC

$10,749,649

1.38%

407,338

PRICE T ROWE ASSOCIATES INC /MD/

$9,454,982

1.21%

358,279

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	57,522	$1,518,005	16.1%	Defined
Held directly	300,757	$7,936,977	83.9%	Sole

ORBIMED ADVISORS LLC

$6,804,714

0.87%

257,852

Schonfeld Strategic Advisors LLC

$6,798,882

0.87%

257,631

GOLDMAN SACHS GROUP INC

$6,249,942

0.80%

236,830

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	192,992	$5,093,058	81.5%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	43,838	$1,156,884	18.5%	Defined

MARSHALL WACE, LLP

$5,951,023

0.76%

225,503

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	225,503	$5,951,023	100.0%	Other

VANGUARD FIDUCIARY TRUST CO

$5,575,072

0.71%

211,257

AMERIPRISE FINANCIAL INC

$5,040,384

0.65%

190,996

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC	190,996	$5,040,384	100.0%	Defined

Saturn V Capital Management LP

$4,824,857

0.62%

182,829

VANGUARD PORTFOLIO MANAGEMENT LLC

$4,779,255

0.61%

181,101

TWO SIGMA INVESTMENTS, LP

$3,887,220

0.50%

147,299

Eversept Partners, LP

$3,385,467

0.43%

128,286

BOOTHBAY FUND MANAGEMENT, LLC

$2,803,515

0.36%

106,234

ALKEON CAPITAL MANAGEMENT LLC

$2,694,445

0.35%

102,101

STIFEL FINANCIAL CORP

$2,255,817

0.29%

85,480

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STIFEL NICOLAUS & CO INC \MO\	85,480	$2,255,817	100.0%	Defined

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$2,126,585

0.27%

80,583

AWM Investment Company, Inc.

$2,111,200

0.27%

80,000

Bank of New York Mellon Corp

$2,014,347

0.26%

76,330

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	29,375	$775,206	38.5%	Defined
The Bank of New York Mellon	46,214	$1,219,587	60.5%	Defined
BNY Mellon, NA	740	$19,528	1.0%	Defined
Held directly	1	$26	0.0%	Defined

MORGAN STANLEY

$1,977,665

0.25%

74,940

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	67	$1,768	0.1%	Defined
MORGAN STANLEY & CO. LLC	7,193	$189,823	9.6%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	21,094	$556,670	28.1%	Defined
MORGAN STANLEY SMITH BARNEY LLC	6,931	$182,909	9.2%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	39,655	$1,046,495	52.9%	Defined

RENAISSANCE TECHNOLOGIES LLC

$1,884,219

0.24%

71,399

WELLINGTON MANAGEMENT GROUP LLP

$1,871,393

0.24%

70,913

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wellington Management Company LLP	22,455	$592,587	31.7%	Defined
Wellington Trust Company, NA joint	45,391	$1,197,868	64.0%	Defined
Wellington Management Australia Pty Ltd	3,067	$80,938	4.3%	Defined

AdvisorShares Investments LLC

$1,867,039

0.24%

70,748

Nuveen, LLC

$1,645,204

0.21%

62,342

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	5,710	$150,686	9.2%	Defined
TEACHERS ADVISORS, LLC joint	56,632	$1,494,518	90.8%	Defined

UBS Group AG

$1,549,013

0.20%

58,697

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	58,697	$1,549,013	100.0%	Defined

ACADIAN ASSET MANAGEMENT LLC

$1,464,882

0.19%

55,509

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	55,509	$1,464,882	100.0%	Defined

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$1,336,732

0.17%

50,653

XTX Topco Ltd

$1,229,800

0.16%

46,601

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	46,601	$1,229,800	100.0%	Defined

TD Asset Management Inc

$1,155,882

0.15%

43,800

DIMENSIONAL FUND ADVISORS LP

$1,123,184

0.14%

42,561

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Ireland Ltd	7,189	$189,717	16.9%	Defined
Held directly	35,372	$933,467	83.1%	Sole

Quantinno Capital Management LP

$1,017,492

0.13%

38,556

ALPS ADVISORS INC

$939,827

0.12%

35,613

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$881,426

0.11%

33,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	33,400	$881,426	100.0%	Other

RHUMBLINE ADVISERS

$834,874

0.11%

31,636

MANUFACTURERS LIFE INSURANCE COMPANY, THE

$797,848

0.10%

30,233

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MANULIFE FINANCIAL CORP joint	30,233	$797,848	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$736,281

0.09%

27,900

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	27,900	$736,281	100.0%	Other

ALLIANCEBERNSTEIN L.P.

$720,447

0.09%

27,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	27,300	$720,447	100.0%	Defined

AMERICAN CENTURY COMPANIES INC

$707,779

0.09%

26,820

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AMERICAN CENTURY INVESTMENT MANAGEMENT INC	26,820	$707,779	100.0%	Defined

WELLS FARGO & COMPANY/MN

$694,135

0.09%

26,303

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	23,892	$630,509	90.8%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	2,411	$63,626	9.2%	Defined

DEUTSCHE BANK AG\

$687,485

0.09%

26,051

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS INVESTMENT MANAGEMENT AMERICAS, INC	493	$13,010	1.9%	Defined
DWS Investments UK Ltd	25,558	$674,475	98.1%	Defined

Allianz Asset Management GmbH

$686,140

0.09%

26,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Allianz Global Investors Asia Pacific Ltd	26,000	$686,140	100.0%	Defined

BROWN ADVISORY INC

$659,750

0.08%

25,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Brown Advisory LLC	25,000	$659,750	100.0%	Defined

JANE STREET GROUP, LLC

$622,804

0.08%

23,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	23,600	$622,804	100.0%	Defined

UNIVERSITY OF TEXAS/TEXAS AM INVESTMENT MANAGEMENT CO

$585,198

0.07%

22,175

Squarepoint Ops LLC

$561,737

0.07%

21,286

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	21,286	$561,737	100.0%	Defined

CITIGROUP INC

$547,460

0.07%

20,745

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	20,745	$547,460	100.0%	Defined

BANK OF AMERICA CORP /DE/

$504,075

0.06%

19,101

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	19,101	$504,075	100.0%	Defined

Revisor Wealth Management LLC

$452,060

0.06%

17,130

SCS Capital Management LLC

$444,407

0.06%

16,840

MetLife Investment Management, LLC

$412,845

0.05%

15,644

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	15,644	$412,845	100.0%	Defined

Virtus Investment Advisers, LLC

$402,157

0.05%

15,239

CITADEL ADVISORS LLC

$398,489

0.05%

15,100

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	15,100	$398,489	100.0%	Defined

BANK OF NOVA SCOTIA

$380,016

0.05%

14,400

Invesco Ltd.

$376,188

0.05%

14,255

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	3,812	$100,598	26.7%	Defined
Invesco Trust Co joint	10,443	$275,590	73.3%	Defined

BARCLAYS PLC

$351,461

0.05%

13,318

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	11,235	$296,491	84.4%	Defined
BARCLAYS CAPITAL INC.	2,083	$54,970	15.6%	Defined

Vanguard Personalized Indexing Management, LLC

$334,044

0.04%

12,658

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$316,917

0.04%

12,009

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	12,009	$316,917	100.0%	Defined

BANK OF MONTREAL /CAN/

$301,240

0.04%

11,415

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BMO Bank N.A.	71	$1,873	0.6%	Defined
BMO Family Office, LLC	11,343	$299,341	99.4%	Defined
BMO NESBITT BURNS INC.	1	$26	0.0%	Defined

JPMORGAN CHASE & CO

$287,755

0.04%

10,904

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	10,858	$286,542	99.6%	Defined
J.P. Morgan Securities plc	46	$1,213	0.4%	Defined

Vanguard Global Advisers, LLC

$281,027

0.04%

10,649

NEW YORK STATE COMMON RETIREMENT FUND

$242,788

0.03%

9,200

GK Wealth Management LLC

$226,030

0.03%

8,565

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$211,067

0.03%

7,998

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	7,998	$211,067	100.0%	Other

IEQ CAPITAL, LLC

$210,803

0.03%

7,988

PROFUND ADVISORS LLC

$208,692

0.03%

7,908

Police & Firemen's Retirement System of New Jersey

$203,862

0.03%

7,725

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	7,725	$203,862	100.0%	Defined

Persistent Asset Partners Ltd

$203,150

0.03%

7,698

State of Wyoming

$202,780

0.03%

7,684

FMR LLC

$166,916

0.02%

6,325

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	6,313	$166,600	99.8%	Defined
STRATEGIC ADVISERS LLC	12	$316	0.2%	Defined

BNP PARIBAS ARBITRAGE, SA

$102,393

0.01%

3,880

ROYAL BANK OF CANADA

$94,344

0.01%

3,575

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	975	$25,730	27.3%	Defined
RBC Capital Markets, LLC	2,600	$68,614	72.7%	Defined

Legal & General Group Plc

$67,109

0.01%

2,543

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management America Inc	2,543	$67,109	100.0%	Defined

WHITTIER TRUST CO OF NEVADA INC

$65,499

0.01%

2,482

Russell Investments Group, Ltd.

$63,335

0.01%

2,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	2,400	$63,335	100.0%	Defined

Ameritas Investment Partners, Inc.

$62,729

0.01%

2,377

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
EATON VANCE MANAGEMENT	2,377	$62,729	100.0%	Other

Tower Research Capital LLC (TRC)

$52,673

0.01%

1,996

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Tower Research Capital Investments LLC	171	$4,512	8.6%	Other
Latour Trading LLC (Latour)	1,825	$48,161	91.4%	Defined

PNC FINANCIAL SERVICES GROUP, INC.

$31,666

0.00%

1,200

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PNC Bank, National Association	1,200	$31,666	100.0%	Defined

LOS ANGELES CAPITAL MANAGEMENT LLC

$26,548

0.00%

1,006

ROTHSCHILD INVESTMENT LLC

$18,077

0.00%

685

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