Alto Neuroscience, Inc. - ANRO

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q2 2026 · Compare: Q1 2026
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
Alpha Wave Global, LP History No change 3,707,757 97,847 1.57% 10.54% 1 0 0.0% Q2 2026 Aug 13, 2026
Commodore Capital LP History No change 2,723,196 71,865 4.28% 3.54% 2 0 0.0% Q2 2026 Aug 14, 2026
BlackRock, Inc. History Added to 2,121,009 55,973 0.0% 0.0% 3 +1,454,821 218.38% Q2 2026 Aug 07, 2026
PERCEPTIVE ADVISORS LLC History Reduced 1,609,893 42,485 0.64% 0.88% 4 -400,000 -19.9% Q2 2026 Aug 14, 2026
ADAGE CAPITAL PARTNERS GP, L.L.C. History Added to 1,600,000 42,224 0.06% 0.01% 5 +1,215,000 315.58% Q2 2026 Aug 14, 2026
VANGUARD CAPITAL MANAGEMENT LLC History Added to 1,389,477 36,668 0.0% 0.0% 6 +182,452 15.12% Q2 2026 Aug 13, 2026
Spruce Street Capital LP History Added to 1,353,047 35,706 7.01% 7.0% 7 +27,837 2.1% Q2 2026 Aug 13, 2026
Vivo Capital, LLC History Added to 1,208,858 31,901 2.91% 1.94% 8 +173,307 16.74% Q2 2026 Aug 14, 2026
FRANKLIN RESOURCES INC History Reduced 1,013,307 26,741 0.01% 0.01% 9 -88,567 -8.04% Q2 2026 Aug 13, 2026
ARMISTICE CAPITAL, LLC History Reduced 864,000 22,800 0.28% 0.36% 10 -48,000 -5.26% Q2 2026 Aug 14, 2026
Affinity Asset Advisors, LLC History Added to 850,000 22,431 1.01% 0.58% 11 +350,000 70.0% Q2 2026 Aug 13, 2026
Vestal Point Capital, LP History Reduced 785,000 20,716 0.48% 1.3% 12 -1,279,075 -61.97% Q2 2026 Aug 14, 2026
STATE STREET CORP History Added to 685,945 18,102 0.0% 0.0% 13 +486,442 243.83% Q2 2026 Aug 07, 2026
GEODE CAPITAL MANAGEMENT, LLC History Added to 678,199 17,902 0.0% 0.0% 14 +385,300 131.55% Q2 2026 Aug 12, 2026
72 Investment Holdings, LLC History No change 667,778 17,622 35.27% 30.26% 15 0 0.0% Q2 2026 Aug 14, 2026
NORTHERN TRUST CORP History Added to 632,701 16,696 0.0% 0.0% 16 +159,298 33.65% Q2 2026 Aug 13, 2026
MILLENNIUM MANAGEMENT LLC History Reduced 558,320 14,734 0.01% 0.01% 17 -263,662 -32.08% Q2 2026 Aug 14, 2026
Point72 Asset Management, L.P. History Reduced 502,950 13,272 0.01% 0.01% 18 -137 -0.03% Q2 2026 Aug 14, 2026
Venrock Adviser, LLC History No change 500,000 13,195 0.4% 0.42% 19 0 0.0% Q2 2026 Aug 14, 2026
Integral Health Asset Management, LLC History No change 500,000 13,195 0.52% 0.54% 20 0 0.0% Q2 2026 Aug 14, 2026
DRIEHAUS CAPITAL MANAGEMENT LLC History Added to 487,576 12,867 0.07% 0.08% 21 +850 0.17% Q2 2026 Aug 14, 2026
Parkman Healthcare Partners LLC History New 429,035 11,322 1.16% 22 +429,035 New Q2 2026 Aug 14, 2026
Ikarian Capital, LLC History Reduced 407,338 10,749 1.16% 0.94% 23 -107,662 -20.91% Q2 2026 Aug 14, 2026
PRICE T ROWE ASSOCIATES INC /MD/ History Reduced 358,279 9,456 0.0% 0.0% 24 -12,929 -3.48% Q2 2026 Aug 14, 2026
ORBIMED ADVISORS LLC History Added to 257,852 6,804 0.13% 0.07% 25 +90,352 53.94% Q2 2026 Aug 14, 2026
Schonfeld Strategic Advisors LLC History New 257,631 6,798 0.02% 26 +257,631 New Q2 2026 Aug 14, 2026
GOLDMAN SACHS GROUP INC History Added to 236,830 6,249 0.0% 0.0% 27 +132,113 126.16% Q2 2026 Aug 14, 2026
MARSHALL WACE, LLP History Added to 225,503 5,951 0.0% 0.0% 28 +49,156 27.87% Q2 2026 Aug 13, 2026
VANGUARD FIDUCIARY TRUST CO History Added to 211,257 5,575 0.0% 0.0% 29 +45,985 27.82% Q2 2026 Aug 13, 2026
AMERIPRISE FINANCIAL INC History Added to 190,996 5,040 0.0% 0.0% 30 +177,672 1333.47% Q2 2026 Aug 14, 2026
Saturn V Capital Management LP History Added to 182,829 4,824 0.69% 0.36% 31 +93,830 105.43% Q2 2026 Aug 14, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC History New 181,101 4,779 0.0% 32 +181,101 New Q2 2026 Aug 13, 2026
TWO SIGMA INVESTMENTS, LP History Reduced 147,299 3,887 0.0% 0.0% 33 -68,800 -31.84% Q2 2026 Aug 14, 2026
Eversept Partners, LP History Added to 128,286 3,385 0.18% 0.15% 34 +3,118 2.49% Q2 2026 Aug 14, 2026
BOOTHBAY FUND MANAGEMENT, LLC History Reduced 106,234 2,803 0.04% 0.04% 35 -33,070 -23.74% Q2 2026 Aug 14, 2026
ALKEON CAPITAL MANAGEMENT LLC History Reduced 102,101 2,694 0.0% 0.01% 36 -125,000 -55.04% Q2 2026 Aug 13, 2026
STIFEL FINANCIAL CORP History Reduced 85,480 2,255 0.0% 0.0% 37 -855 -0.99% Q2 2026 Aug 12, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History Added to 80,583 2,126 0.0% 0.0% 38 +63,565 373.52% Q2 2026 Aug 14, 2026
AWM Investment Company, Inc. History Reduced 80,000 2,111 0.18% 0.42% 39 -90,000 -52.94% Q2 2026 Aug 14, 2026
Bank of New York Mellon Corp History New 76,330 2,014 0.0% 40 +76,330 New Q2 2026 Aug 06, 2026
MORGAN STANLEY History Added to 74,940 1,977 0.0% 0.0% 41 +6,286 9.16% Q2 2026 Aug 13, 2026
RENAISSANCE TECHNOLOGIES LLC History Reduced 71,399 1,884 0.0% 0.0% 42 -32,100 -31.01% Q2 2026 Aug 13, 2026
WELLINGTON MANAGEMENT GROUP LLP History Added to 70,913 1,871 0.0% 0.0% 43 +11,114 18.59% Q2 2026 Aug 14, 2026
AdvisorShares Investments LLC History Added to 70,748 1,867 0.23% 0.17% 44 +29,725 72.46% Q2 2026 Aug 11, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Reduced 69,298 1,828 0.0% 0.0% 45 -568,300 -89.13% Q2 2026 Aug 14, 2026
Nuveen, LLC History New 62,342 1,645 0.0% 46 +62,342 New Q2 2026 Aug 11, 2026
UBS Group AG History Added to 58,697 1,549 0.0% 0.0% 47 +41,447 240.27% Q2 2026 Aug 13, 2026
ACADIAN ASSET MANAGEMENT LLC History Reduced 55,509 1,464 0.0% 0.0% 48 -4,567 -7.6% Q2 2026 Aug 13, 2026
BRIDGEWAY CAPITAL MANAGEMENT, LLC History Reduced 50,653 1,336 0.02% 0.02% 49 -2,000 -3.8% Q2 2026 Aug 14, 2026
XTX Topco Ltd History Added to 46,601 1,229 0.02% 0.02% 50 +6,760 16.97% Q2 2026 Aug 14, 2026
TD ASSET MANAGEMENT INC History No change 43,800 1,155 0.0% 0.0% 51 0 0.0% Q2 2026 Aug 04, 2026
DIMENSIONAL FUND ADVISORS LP History Added to 42,561 1,123 0.0% 0.0% 52 +3,237 8.23% Q2 2026 Aug 11, 2026
Quantinno Capital Management LP History Added to 38,556 1,017 0.0% 0.0% 53 +2,487 6.9% Q2 2026 Aug 13, 2026
ALPS ADVISORS INC History Added to 35,613 939 0.0% 0.0% 54 +10,325 40.83% Q2 2026 Jul 29, 2026
RHUMBLINE ADVISERS History New 31,636 834 0.0% 55 +31,636 New Q2 2026 Aug 11, 2026
MANUFACTURERS LIFE INSURANCE COMPANY, THE History Added to 30,233 797 0.0% 0.0% 56 +6,486 27.31% Q2 2026 Sep 09, 2026
AMERICAN CENTURY COMPANIES INC History Added to 26,820 707 0.0% 0.0% 57 +12,634 89.06% Q2 2026 Aug 12, 2026
WELLS FARGO & COMPANY/MN History Added to 26,303 694 0.0% 0.0% 58 +25,513 3229.49% Q2 2026 Aug 14, 2026
DEUTSCHE BANK AG\ History New 26,051 687 0.0% 59 +26,051 New Q2 2026 Aug 07, 2026
Allianz Asset Management GmbH History Reduced 26,000 686 0.0% 0.0% 60 -2,500 -8.77% Q2 2026 Sep 02, 2026
BROWN ADVISORY INC History No change 25,000 659 0.0% 0.0% 61 0 0.0% Q2 2026 Aug 14, 2026
JANE STREET GROUP, LLC History Reduced 23,600 622 0.0% 0.0% 62 -54,458 -69.77% Q2 2026 Aug 14, 2026
ALLIANCEBERNSTEIN L.P. History New 27,300 613 0.0% 63 +27,300 New Q2 2026 Aug 14, 2026
UNIVERSITY OF TEXAS/TEXAS AM INVESTMENT MANAGEMENT CO History No change 22,175 585 0.07% 0.07% 64 0 0.0% Q2 2026 Aug 03, 2026
Squarepoint Ops LLC History Reduced 21,286 561 0.0% 0.0% 65 -8,675 -28.95% Q2 2026 Aug 14, 2026
CITIGROUP INC History Added to 20,745 547 0.0% 0.0% 66 +11,315 119.99% Q2 2026 Aug 03, 2026
BANK OF AMERICA CORP /DE/ History Reduced 19,101 504 0.0% 0.0% 67 -6,576 -25.61% Q2 2026 Aug 14, 2026
Revisor Wealth Management LLC History No change 17,130 452 0.11% 0.11% 68 0 0.0% Q2 2026 Jul 21, 2026
SCS Capital Management LLC History No change 16,840 444 0.0% 0.0% 69 0 0.0% Q2 2026 Aug 06, 2026
MetLife Investment Management, LLC History New 15,644 412 0.0% 70 +15,644 New Q2 2026 Aug 13, 2026
Virtus Investment Advisers, LLC History New 15,239 402 0.09% 71 +15,239 New Q2 2026 Aug 11, 2026
CITADEL ADVISORS LLC History Reduced 15,100 398 0.0% 0.0% 72 -16,000 -51.45% Q2 2026 Sep 02, 2026
BANK OF NOVA SCOTIA History New 14,400 380 0.0% 73 +14,400 New Q2 2026 Aug 12, 2026
Invesco Ltd. History New 14,255 376 0.0% 74 +14,255 New Q2 2026 Aug 14, 2026
BARCLAYS PLC History Reduced 13,318 351 0.0% 0.0% 75 -11,718 -46.8% Q2 2026 Aug 14, 2026
Vanguard Personalized Indexing Management, LLC History Reduced 12,658 334 0.0% 0.0% 76 -2,988 -19.1% Q2 2026 Aug 11, 2026
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. History New 12,009 316 0.0% 77 +12,009 New Q2 2026 Aug 14, 2026
JPMORGAN CHASE & CO History Added to 10,904 306 0.0% 78 +10,858 23604.35% Q2 2026 Aug 12, 2026
BANK OF MONTREAL /CAN/ History Added to 11,415 301 0.0% 0.0% 79 +72 0.63% Q2 2026 Aug 12, 2026
Vanguard Global Advisers, LLC History No change 10,649 281 0.0% 0.0% 80 0 0.0% Q2 2026 Aug 13, 2026
NEW YORK STATE COMMON RETIREMENT FUND History New 9,200 242 0.0% 81 +9,200 New Q2 2026 Jul 29, 2026
GK Wealth Management LLC History New 8,565 226 0.12% 82 +8,565 New Q2 2026 Jul 07, 2026
IEQ CAPITAL, LLC History Reduced 7,988 210 0.0% 0.0% 83 -15,739 -66.33% Q2 2026 Aug 11, 2026
PROFUND ADVISORS LLC History New 7,908 208 0.01% 84 +7,908 New Q2 2026 Aug 11, 2026
Police & Firemen's Retirement System of New Jersey History New 7,725 203 0.0% 85 +7,725 New Q2 2026 Jul 23, 2026
Persistent Asset Partners Ltd History New 7,698 203 0.06% 86 +7,698 New Q2 2026 Aug 06, 2026
State of Wyoming History New 7,684 202 0.02% 87 +7,684 New Q2 2026 Aug 06, 2026
FMR LLC History Added to 6,325 166 0.0% 0.0% 88 +11 0.17% Q2 2026 Aug 13, 2026
BNP PARIBAS FINANCIAL MARKETS History Added to 3,880 102 0.0% 0.0% 89 +3,566 1135.67% Q2 2026 Aug 13, 2026
ROYAL BANK OF CANADA History Added to 3,575 95 0.0% 0.0% 90 +3,534 8619.51% Q2 2026 Aug 14, 2026
Legal & General Group Plc History New 2,543 67 0.0% 91 +2,543 New Q2 2026 Aug 14, 2026
Russell Investments Group, Ltd. History Added to 2,400 63 0.0% 0.0% 93 +2,094 684.31% Q2 2026 Aug 06, 2026
WHITTIER TRUST CO OF NEVADA INC History No change 2,482 63 0.0% 0.0% 92 0 0.0% Q2 2026 Jul 27, 2026
Ameritas Investment Partners, Inc. History New 2,377 62 0.0% 94 +2,377 New Q2 2026 Aug 13, 2026
Tower Research Capital LLC (TRC) History Added to 1,996 52 0.0% 0.0% 95 +1,931 2970.77% Q2 2026 Aug 11, 2026
PNC FINANCIAL SERVICES GROUP, INC. History Reduced 1,200 31 0.0% 0.0% 96 -6 -0.5% Q2 2026 Aug 07, 2026
LOS ANGELES CAPITAL MANAGEMENT LLC History New 1,006 26 0.0% 97 +1,006 New Q2 2026 Aug 13, 2026
ROTHSCHILD INVESTMENT LLC History Reduced 685 18 0.0% 0.0% 98 -1,000 -59.35% Q2 2026 Aug 06, 2026
STRS OHIO History New 600 15 0.0% 99 +600 New Q2 2026 Jul 30, 2026
EverSource Wealth Advisors, LLC History Reduced 560 14 0.0% 0.0% 101 -68 -10.83% Q2 2026 Jul 24, 2026
JONES FINANCIAL COMPANIES LLLP History No change 533 14 0.0% 0.0% 100 0 0.0% Q2 2026 Aug 14, 2026
Torren Management, LLC History No change 558 14 0.01% 0.01% 102 0 0.0% Q2 2026 Jul 10, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM History New 361 9 0.0% 104 +361 New Q2 2026 Aug 24, 2026
Accent Capital Management, LLC History Added to 366 9 0.0% 0.0% 103 +91 33.09% Q2 2026 Aug 12, 2026
NISA INVESTMENT ADVISORS, LLC History No change 338 8 0.0% 0.0% 105 0 0.0% Q2 2026 Aug 10, 2026
Aster Capital Management (DIFC) Ltd History New 135 3 0.0% 106 +135 New Q2 2026 Aug 14, 2026
FEDERATED HERMES, INC. History Reduced 110 2 0.0% 0.0% 107 -544 -83.18% Q2 2026 Aug 12, 2026
Optiver Holding B.V. History Added to 112 2 0.0% 109 +108 2700.0% Q2 2026 Aug 12, 2026
Sterling Capital Management LLC History New 92 2 0.0% 110 +92 New Q2 2026 Jul 28, 2026
CWM, LLC History No change 102 2 0.0% 0.0% 108 0 0.0% Q1 2026 May 14, 2026
US BANCORP \DE\ History Reduced 39 1 0.0% 0.0% 111 -71 -64.55% Q2 2026 Aug 12, 2026
Cornerstone Financial Management LLC History No change 69 1 0.0% 0.0% 112 0 0.0% Q2 2026 Aug 28, 2026
JENNISON ASSOCIATES LLC History Closed out 0 0 0.01% -386,426 -100.0% Q2 2026 Aug 03, 2026
Qube Research & Technologies Ltd History Closed out 0 0 0.01% -209,268 -100.0% Q2 2026 Aug 14, 2026
Almitas Capital LLC History Closed out 0 0 0.4% -78,520 -100.0% Q2 2026 Aug 14, 2026
D. E. Shaw & Co., Inc. History Closed out 0 0 0.0% -45,343 -100.0% Q2 2026 Aug 14, 2026
Hudson Bay Capital Management LP History Closed out 0 0 0.0% -43,762 -100.0% Q2 2026 Aug 14, 2026
683 Capital Management, LLC History Closed out 0 0 0.05% -40,000 -100.0% Q2 2026 Aug 14, 2026
Brevan Howard Capital Management LP History Closed out 0 0 0.01% -38,782 -100.0% Q2 2026 Aug 14, 2026
BALYASNY ASSET MANAGEMENT L.P. History Closed out 0 0 0.0% -32,111 -100.0% Q2 2026 Aug 14, 2026
Y-Intercept (Hong Kong) Ltd History Closed out 0 0 0.01% -23,945 -100.0% Q2 2026 Jul 13, 2026
LANDSCAPE CAPITAL MANAGEMENT, L.L.C. History Closed out 0 0 0.03% -18,083 -100.0% Q2 2026 Aug 11, 2026
POLEN CAPITAL MANAGEMENT LLC History Closed out 0 0 0.0% -16,613 -100.0% Q2 2026 Aug 04, 2026
TORONTO DOMINION BANK History Closed out 0 0 0.0% -13,434 -100.0% Q2 2026 Aug 14, 2026
Clearstead Advisors, LLC History Closed out 0 0 0.0% -13,312 -100.0% Q2 2026 Aug 06, 2026
Catalyst Funds Management Pty Ltd History Closed out 0 0 0.04% -11,400 -100.0% Q2 2026 Aug 10, 2026
Diametric Capital, LP History Closed out 0 0 0.06% -10,315 -100.0% Q2 2026 Aug 14, 2026
OMERS ADMINISTRATION Corp History Closed out 0 0 0.0% -9,700 -100.0% Q2 2026 Aug 13, 2026
Advisory Services Network, LLC History Closed out 0 0 0.0% -802 -100.0% Q2 2026 Aug 12, 2026
SIMPLEX TRADING, LLC History Closed out 0 0 0.0% -450 -100.0% Q2 2026 Aug 12, 2026
GROUP ONE TRADING LLC History Closed out 0 0 0.0% -400 -100.0% Q2 2026 Aug 13, 2026
SIGNATUREFD, LLC History Closed out 0 0 -41 -100.0% Q2 2026 Jul 23, 2026
SHP Wealth Management History Closed out 0 0 -25 -100.0% Q2 2026 Aug 11, 2026
GAMMA Investing LLC History New 8 0 +8 New Q2 2026 Jul 07, 2026
Arax Advisory Partners History No change 5 0 0 0.0% Q2 2026 Aug 10, 2026
OSAIC HOLDINGS, INC. History No change 3 0 0 0.0% Q2 2026 Aug 14, 2026
SBI Securities Co., Ltd. History No change 12 0 0 0.0% Q2 2026 Jul 22, 2026
Farther Finance Advisors, LLC History No change 11 0 0 0.0% Q2 2026 Jul 17, 2026