13F

Stock

Alector, Inc.

ALEC · held by 130 managers

Reported value

$125.6M

Holders

130

+2 new · −3 exited

Holders’ est. mark

−$1.25M

Price effect on 6 books still in the name

Largest holder

$15.6M

TCG Crossover Management, LLC

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
TCG Crossover Management, LLC10M$15.6MHeld
BlackRock, Inc.7.15M$11.2MHeld
Vanguard6.91M$10.8MHeld
Foresite Capital Management IV, LLC3.89M$6.06MHeld
Merck & Co., Inc.3.55M$5.53MHeld
683 Capital Management, LLC3.35M$5.23MHeld
Balyasny Asset Management L.P.3.27M$5.09MHeld
D. E. Shaw & Co., Inc.2.37M$3.69MHeld
Fidelity2.23M$3.48MHeld
JACOBS LEVY EQUITY MANAGEMENT, INC2.17M$3.39MHeld
Ikarian Capital, LLC2.08M$3.25MHeld
GEODE CAPITAL MANAGEMENT, LLC2.08M$3.24MHeld
Kynam Capital Management, LP2M$3.12MHeld
State Street1.81M$2.83MHeld
Renaissance Technologies1.54M$2.41MHeld
MEDICI CAPITAL LLC1.5M$2.34MHeld
MILLENNIUM MANAGEMENT LLC1.33M$2.08MHeld
Euclidean Capital LLC1.31M$2.04MHeld
MARSHALL WACE, LLP1.17M$1.82MHeld
Spruce Street Capital LP1.12M$1.74MHeld
ADAR1 Capital Management, LLC1.11M$1.73MHeld
DEERFIELD MANAGEMENT COMPANY, L.P.1.06M$1.65MHeld
TWO SIGMA INVESTMENTS, LP1.04M$1.62MHeld
DEUTSCHE BANK AG\1.04M$1.61MHeld
Eversept Partners, LP1.01M$1.57MHeld
JANE STREET GROUP, LLC993.9K$1.55MHeld
DAFNA Capital Management LLC908.4K$1.42MHeld
Elmind Capital, LP900K$1.4MHeld
PANAGORA ASSET MANAGEMENT INC850.3K$1.33MHeld
Vestal Point Capital, LP755K$1.18MHeld
CHARLES SCHWAB INVESTMENT MANAGEMENT INC665.5K$1.04MHeld
TWO SIGMA ADVISERS, LP651.8K$1.02MHeld
MACKENZIE FINANCIAL CORP660.2K$1MHeld
Icahn Capital599.6K$935.3KHeld
XTX Topco Ltd592.8K$924.8KHeld
NORTHERN TRUST CORP587.7K$916.7KHeld
BOOTHBAY FUND MANAGEMENT, LLC559.7K$873.2KHeld
GOLDMAN SACHS GROUP INC438K$683.2KHeld
BARCLAYS PLC398.7K$622K−$558.2KCut−$1.96M
AMERIPRISE FINANCIAL INC354.3K$552.7KHeld
MORGAN STANLEY319.1K$497.8K−$446.7KCut−$787.4K
SUSQUEHANNA INTERNATIONAL GROUP, LLP291.2K$454.2KHeld
Invesco Ltd.279.5K$436KHeld
Bank of New York Mellon Corp217.9K$339.9KHeld
NANO CAP NEW MILLENNIUM GROWTH FUND L P200K$312KHeld
DIMENSIONAL FUND ADVISORS LP199.1K$310.5KHeld
CANADA PENSION PLAN INVESTMENT BOARD172.3K$268.8KHeld
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO136K$212.2KHeld
BANK OF AMERICA CORP /DE/134.5K$209.8K−$188.3KCut−$519.2K
Utah Retirement Systems133.7K$208.6KHeld
Nuveen, LLC133.2K$207.9KHeld
UBS Group AG119.4K$186.3KHeld
BRIDGEWAY CAPITAL MANAGEMENT, LLC115K$179.4KHeld
STRS OHIO110.4K$172.2KHeld
Graham Capital Management, L.P.104.9K$163.6KHeld
RHUMBLINE ADVISERS101.9K$159KHeld
Jasper Ridge Partners, L.P.95.1K$148.3KHeld
Citadel93.5K$145.9KHeld
ALLIANCEBERNSTEIN L.P.92.9K$145KHeld
LOS ANGELES CAPITAL MANAGEMENT LLC93.1K$141.4KHeld
WELLS FARGO & COMPANY/MN90.1K$140.6KHeld
Man Group plc86.2K$134.4KHeld
SIMPLEX TRADING, LLC82K$127.9KHeld
Squarepoint Ops LLC77.6K$121.1KHeld
Russell Investments Group, Ltd.71.9K$112.1KHeld
Blackstone Inc.66.9K$104.3KNew
Quadrature Capital Ltd62.3K$97.1KHeld
Cannell & Spears LLC54.6K$85.2KHeld
Lexington Partners L.P.53.5K$83.4KHeld
Vanguard Personalized Indexing Management, LLC53.1K$82.8KHeld
HSBC HOLDINGS PLC48.5K$75.7KHeld
OXFORD ASSET MANAGEMENT LLP42.9K$66.9KNew
TUDOR INVESTMENT CORP ET AL41.3K$64.4K−$57.8KCut−$57.8K
Tower Research Capital LLC (TRC)39.5K$61.7KHeld
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.37.3K$58.1KHeld
INTECH INVESTMENT MANAGEMENT LLC34.5K$53.8KHeld
JPMORGAN CHASE & CO32.6K$50.9KHeld
PRUDENTIAL FINANCIAL INC32.2K$50.3KHeld
Vontobel Holding Ltd.30K$46.8KHeld
MANUFACTURERS LIFE INSURANCE COMPANY, THE28.8K$45KHeld
Dynamic Technology Lab Private Ltd25.9K$40KHeld
Police & Firemen's Retirement System of New Jersey23.4K$36.5KHeld
Point72 Asset Management, L.P.23.1K$36KHeld
BNP PARIBAS FINANCIAL MARKETS22.4K$34.9KHeld
HERSHEY TRUST CO20.6K$32.1KHeld
Bronte Capital Management Pty Ltd.19.3K$30.1KHeld
SEI INVESTMENTS CO16.9K$26.3KHeld
ProShare Advisors LLC14.7K$22.9KHeld
NEUBERGER BERMAN GROUP LLC14.2K$22.1KHeld
DIVERSIFIED TRUST CO14.1K$22KHeld
VOYA INVESTMENT MANAGEMENT LLC13.9K$21.7KHeld
Cerity Partners LLC13.7K$21.3KHeld
R Squared Ltd12.5K$19.5KHeld
NEW YORK STATE COMMON RETIREMENT FUND10.3K$16.1KHeld
Corient Private Wealth LLC10.3K$16KHeld
HighTower Advisors, LLC10K$15.6KHeld
Texas Yale Capital Corp.10K$15.6KHeld
Ameritas Investment Partners, Inc.8.18K$12.8KHeld
CITIGROUP INC6.16K$9.6KHeld
Legal & General Group Plc6.04K$9.42KHeld
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM4.94K$7.71KHeld
ROYAL BANK OF CANADA4.68K$7KHeld
Sterling Capital Management LLC4.42K$6.9KHeld
ACADIAN ASSET MANAGEMENT LLC3.44M$5.36KHeld
GAMMA Investing LLC1.07K$1.68KHeld
NISA INVESTMENT ADVISORS, LLC1.02K$1.58KHeld
Physician Wealth Advisors, Inc.752$1.17KHeld
OSAIC HOLDINGS, INC.620$967Held
True Wealth Design, LLC563$879Held
Hughes Financial Services, LLC553$863Held
EverSource Wealth Advisors, LLC504$786Held
Essential Partners LLC431$672−$604Cut−$897
DekaBank Deutsche Girozentrale100K$661Held
Federation des caisses Desjardins du Quebec415$647Held
Wilmington Savings Fund Society, FSB400$624Held
Rockefeller Capital Management L.P.367$573Held
MARK SHEPTOFF FINANCIAL PLANNING, LLC300$468Held
GSA CAPITAL PARTNERS LLP225.6K$352Held
ROTHSCHILD INVESTMENT LLC209$326Held
NATIONAL BANK OF CANADA /FI/200$312Held
HRT FINANCIAL LP57.3K$89Held
PRICE T ROWE ASSOCIATES INC /MD/56.2K$89Held
Kingdom Financial Group LLC.48$75Held
IFP Advisors, Inc47$73−$66Cut−$66
SG Americas Securities, LLC27K$42Held
Virtu Financial LLC21.9K$34Held
SBI Securities Co., Ltd.20$31Held
CWM, LLC12.2K$19Held
COMERICA BANK9$14Held
AMALGAMATED BANK2.52K$4Held

Who left

Positions as of Q4 2025. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.