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Disclosery

ALEC ALECTOR INC

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COMMON STOCK (common), issuer CIK 1653087

137 managers (141 13F filers) reported a position in ALEC shares at 2026-06-30, 91,241,723 shares in all. 14 filers opened a position and 9 filers sold out during the quarter.

Managers
137
13F filers
141
New
14
Added
59
Reduced
35
Sold out
9
Shares held by filers
91,241,723

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
TCG Crossover Management, LLC10,000,000$20.1M0.48%013F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.7,847,879$15.8M<0.01%+106,63413F-HRTimelineGroup
VANGUARD GROUP INCgroup of 5 filers holding7,574,172$15.2M+652,038Timeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC4,414,345$8.86M0.01%+375,56013F-HRTimelineGroup
Nantahala Capital Management, LLC4,318,109$8.68M0.52%+1,502,12613F-HR/ATimeline
Kynam Capital Management, LP3,808,494$7.66M0.42%+1,808,49413F-HRTimeline
Merck & Co., Inc.in group Merck & Co., Inc.3,545,719$7.13M1.35%013F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management3,247,426$6.53M0.01%+312,17313F-HRTimelineGroup
683 Capital Management, LLCin group 683 Capital Management, LLC3,200,000$6.43M0.59%013F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.2,959,983$5.95M<0.01%-372,85213F-HRTimelineGroup
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC2,883,583$5.8M0.27%+1,833,58313F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC2,454,271$4.93M<0.01%+168,05313F-HRTimelineGroup
Spruce Street Capital LP2,101,068$4.22M0.83%013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC1,988,835$4M<0.01%+9,60913F-HRTimelineGroup
Ikarian Capital, LLC1,982,606$3.99M0.65%-100,00013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP1,879,765$3.78M<0.01%+14,23913F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC1,765,929$3.55M0.01%-388,43213F-HRTimeline
MEDICI CAPITAL LLC1,652,520$3.32M6.51%013F-HRTimeline
Affinity Asset Advisors, LLC1,510,000$3.04M0.15%+1,010,00013F-HRTimeline
Eversept Partners, LP1,423,873$2.86M0.16%+72,76713F-HRTimeline
FMR LLCin group FMR LLC1,396,398$2.81M<0.01%-399,70613F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC1,309,577$2.63M<0.01%+598,24313F-HRTimelineGroup
Euclidean Capital LLC1,307,858$2.63M0.6%013F-HRTimeline
MACKENZIE FINANCIAL CORP1,109,770$2.23M<0.01%+252,41613F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\1,098,388$2.21M<0.01%+5,48513F-HRTimelineGroup
DEERFIELD MANAGEMENT COMPANY, L.P.in group DEERFIELD MANAGEMENT COMPANY,…1,055,192$2.12M0.02%013F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP1,045,376$2.1M<0.01%-233,93013F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC935,166$1.88M<0.01%-352,52513F-HRTimeline
DAFNA Capital Management LLC908,351$1.83M0.35%013F-HRTimeline
Elmind Capital, LP900,000$1.81M0.45%013F-HRTimeline
PANAGORA ASSET MANAGEMENT INC845,999$1.7M0.01%+255,61113F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co818,831$1.65M<0.01%+31,42313F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP773,462$1.55M<0.01%+81,20613F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP598,559$1.2M<0.01%-21,86513F-HRTimelineGroup
BOOTHBAY FUND MANAGEMENT, LLC532,850$1.07M0.02%-26,87613F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC433,875$872K<0.01%-170,68713F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd399,681$803K0.01%-160,21513F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC391,232$786K<0.01%+313,68713F-HRTimelineGroup
CANTOR FITZGERALD, L. P.in group CANTOR FITZGERALD, L. P.295,492$594K0.01%new13F-HR/ATimelineGroup
UBS Group AGin group UBS Group AG273,780$550K<0.01%+128,43613F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.257,139$517K<0.01%-7,92813F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp250,093$503K<0.01%-2,20413F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC224,530$451K<0.01%-46,74213F-HRTimelineGroup
NANO CAP NEW MILLENNIUM GROWTH FUND L P200,000$402K0.31%013F-HRTimeline
LMR Partners LLPin group LMR Partners LLP200,000$402K<0.01%new13F-HRTimelineGroup
Nuveen, LLCin group TIAA176,234$354K<0.01%+21,30413F-HRTimelineGroup
Utah Retirement Systems154,290$310K<0.01%013F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/142,678$287K<0.01%-238,23013F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC142,500$286K0.01%013F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD131,300$264K<0.01%-51,90013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY120,480$242K<0.01%-244,08713F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…119,769$241K<0.01%-16,23113F-HRTimeline
ALLIANCEBERNSTEIN L.P.108,940$234K<0.01%+16,00013F-HRTimeline
RHUMBLINE ADVISERS109,532$220K<0.01%+8,20513F-HRTimeline
STRS OHIO101,600$204K<0.01%+15,10013F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…98,496$198K<0.01%+32,36513F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN89,172$179K<0.01%+54,64613F-HRTimelineGroup
SIMPLEX TRADING, LLC85,488$172K<0.01%+17,01113F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/81,655$165K<0.01%+25,55513F-HRTimeline
Blackstone Inc.in group Blackstone Inc.77,145$155K<0.01%013F-HRTimelineGroupThe filing omitted confidential holdings, a later amendment may add them.
Jasper Ridge Partners, L.P.73,531$148K<0.01%013F-HR/ATimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO71,151$143K<0.01%+17,30513F-HRTimelineGroup
DZ BANK AG Deutsche Zentral Genossensch…in group DZ BANK AG Deutsche Zentral G…69,666$140K<0.01%013F-HRTimelineGroup
IEQ CAPITAL, LLC60,570$122K<0.01%+13,49013F-HRTimeline
Verdad Advisers, LP60,509$122K0.12%+36,95513F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…58,696$118K<0.01%+22,48813F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC52,709$106K<0.01%+33,91013F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC48,523$98K<0.01%013F-HRTimelineGroup
Graham Capital Management, L.P.46,496$93.5K<0.01%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC46,275$93K<0.01%+41,63613F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…45,190$90.8K<0.01%+2,52913F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC44,957$90.4K<0.01%+2,36613F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO42,998$89.4K<0.01%+5,61913F-HRTimelineGroup
DIVERSIFIED TRUST CO42,351$85.1K<0.01%+16,45613F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP33,728$68K<0.01%-250,08913F-HRTimelineGroup
Cerity Partners LLCin group Cerity Partners LLC32,521$65.4K<0.01%+5,54513F-HRTimelineGroup
Cannell & Spears LLC30,342$61K<0.01%-24,30013F-HRTimeline
Vontobel Holding Ltd.in group Vontobel Holding Ltd.30,000$60.3K<0.01%013F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.26,699$53.7K<0.01%-53,39213F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA26,122$53K<0.01%+19,07513F-HRTimelineGroup
MERCER GLOBAL ADVISORS INC /ADV25,504$51.3K<0.01%new13F-HR/ATimeline
GROUP ONE TRADING LLC25,208$50.7K<0.01%new13F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC24,530$49.3K<0.01%+57613F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…30,251$48.7K<0.01%+12,05413F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…24,123$48.5K<0.01%-83,47413F-HRTimelineGroup
Police & Firemen's Retirement System of…23,426$47.1K<0.01%013F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC21,898$44K<0.01%+6,42013F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS21,200$42.6K<0.01%+1,17313F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …19,397$39K<0.01%-6,75113F-HRTimelineGroup
Qube Research & Technologies Ltd16,569$33.3K<0.01%new13F-HRTimeline
CAPTRUST FINANCIAL ADVISORS16,037$32.2K<0.01%+5,38913F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC16,015$32.2K<0.01%-7,78013F-HRTimelineGroup
Creative Planningin group Creative Planning15,015$30.2K<0.01%new13F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…14,450$29K<0.01%+8,50713F-HRTimelineGroup
HAMILTON LANE ADVISORS LLC14,400$28.9K0.02%013F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd14,169$28.5K<0.01%-5,31713F-HRTimelineGroup
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC13,521$27.2K<0.01%-1,00713F-HRTimelineGroup
ProShare Advisors LLC12,848$25.8K<0.01%-34013F-HRTimeline
Bronte Capital Management Pty Ltd.11,758$23.6K<0.01%-7,52413F-HRTimeline
Merit Financial Group, LLC11,243$22.6K<0.01%+31513F-HR/ATimeline
NEW YORK STATE COMMON RETIREMENT FUND10,310$20.7K<0.01%013F-HRTimeline
HighTower Advisors, LLC10,227$20.6K<0.01%-53313F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc8,346$16.8K<0.01%013F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…8,175$16.4K<0.01%013F-HRTimelineGroup
Arax Advisory Partners5,433$10.9K<0.01%+5,25413F-HRTimeline
Integrated Wealth Concepts LLC4,892$9.83K<0.01%new13F-HRTimeline
China Universal Asset Management Co., L…3,600$7.24K<0.01%new13F-HRTimeline
Allworth Financial LP2,479$4.98K<0.01%+1,85213F-HRTimeline
GAMMA Investing LLC1,523$3.06K<0.01%013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC1,416$2.85K<0.01%+40013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…1,309$2.63K<0.01%+42213F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…1,274$2.56K<0.01%-3,62013F-HR/ATimeline
Essential Partners LLC1,237$2.49K<0.01%-2,62013F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.925$1.86K<0.01%-77613F-HRTimelineGroup
True Wealth Design, LLC867$1.74K<0.01%+27413F-HRTimeline
Physician Wealth Advisors, Inc.752$1.51K<0.01%013F-HRTimeline
ROTHSCHILD INVESTMENT LLC680$1.37K<0.01%+44013F-HRTimeline
Sterling Capital Management LLC523$1.05K<0.01%-2,28313F-HRTimeline
Basecamp Wealth Advisors LLC446$896<0.01%+11713F-HRTimeline
Federation des caisses Desjardins du Qu…415$834<0.01%013F-HRTimeline
Wilmington Savings Fund Society, FSB400$804<0.01%013F-HRTimeline
Hughes Financial Services, LLC388$780<0.01%-2413F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…367$738<0.01%013F-HRTimelineGroup
MARK SHEPTOFF FINANCIAL PLANNING, LLC300$603<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.300$603<0.01%new13F-HRTimelineGroup
Farther Finance Advisors, LLC253$509<0.01%+9713F-HRTimeline
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/200$400<0.01%013F-HRTimelineGroup
Fortitude Family Office, LLC134$269<0.01%-12113F-HRTimeline
Clearstead Advisors, LLC125$252<0.01%new13F-HRTimeline
Wealth Enhancement Trust Services, Inc.105$211<0.01%new13F-HR/ATimeline
IFP Advisors, Inc94$189<0.01%+8813F-HRTimeline
Kingdom Financial Group LLC.48$96<0.01%013F-HRTimeline
SJS Investment Consulting Inc.43$87<0.01%new13F-HRTimeline
Caitong International Asset Management …42$84<0.01%+4013F-HRTimeline
SBI Securities Co., Ltd.20$40<0.01%013F-HRTimeline
JPL Wealth Management, LLC18$37<0.01%new13F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…6$12<0.01%013F-HRTimelineGroup