What does CUSIP 014442107 represent in this 13F holders report?

CUSIP 014442107 is the security identifier for ALEC - Alector, Inc. - Common Stock, $0.0001 par value per share used to aggregate holder disclosures.

How many institutions held ALEC - Alector, Inc. - Common Stock, $0.0001 par value per share in Q4 2021?

160 institutional investors reported ALEC - Alector, Inc. - Common Stock, $0.0001 par value per share for Q4 2021. Use the holders table for investor-level position and value details.

Alector, Inc. - Common Stock, $0.0001 par value per share (ALEC)

CUSIP: 014442107

Q4 2021 13F Holders as of 31 Dec 2021

Type / Class: Equity / Common Stock, $0.0001 par value per share
Shares outstanding: 110,074,447
Total 13F shares: 54,728,224
Share change: +3,246,171
Total reported value: $1,130,142,954
Put/Call ratio: 203%
Price per share: $20.65
Number of holders: 160
Value change: +$66,134,357
Number of buys: 85
Number of sells: 61

Quarterly Holders Quick Answers

What is CUSIP 014442107?
CUSIP 014442107 identifies ALEC - Alector, Inc. - Common Stock, $0.0001 par value per share in SEC institutional holdings data.

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Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q1 2022
Previous quarter: Q3 2021

Recent filing periods for CUSIP 014442107:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of ALEC - Alector, Inc. - Common Stock, $0.0001 par value per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
BlackRock Finance, Inc.	13F	Company	4.8%	5,270,814	$120,279,000	—	30 Sep 2021	13F
VANGUARD GROUP INC	13F	Company	4.6%	5,077,433	$115,867,000	—	30 Sep 2021	13F
FEDERATED HERMES, INC.	13F	Company	4.5%	5,000,918	$114,121,000	—	30 Sep 2021	13F
EcoR1 Capital, LLC	13F	Company	4.5%	4,994,970	$113,985,000	—	30 Sep 2021	13F
FMR LLC	13F	Company	4.4%	4,831,794	$110,261,000	—	30 Sep 2021	13F
STATE STREET CORP	13F	Company	3.3%	3,584,519	$81,799,000	—	30 Sep 2021	13F
JPMORGAN CHASE & CO	13F	Company	2.3%	2,559,893	$58,418,000	—	30 Sep 2021	13F
FRANKLIN RESOURCES INC	13F	Company	2%	2,239,417	$51,103,000	—	30 Sep 2021	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	1.7%	1,866,898	$42,603,000	—	30 Sep 2021	13F
Casdin Capital, LLC	13F	Company	1.5%	1,650,000	$37,653,000	—	30 Sep 2021	13F
Marshall Wace North America L.P.	13F	Company	0.98%	1,083,580	$24,728,000	—	30 Sep 2021	13F
DEERFIELD MANAGEMENT COMPANY, L.P.	13F	Company	0.96%	1,055,192	$24,079,000	—	30 Sep 2021	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.91%	999,768	$22,814,000	—	30 Sep 2021	13F
Euclidean Capital LLC	13F	Company	0.89%	980,894	$22,384,000	—	30 Sep 2021	13F
GILDER GAGNON HOWE & CO LLC	13F	Company	0.79%	872,048	$19,900,000	—	30 Sep 2021	13F
MORGAN STANLEY	13F	Company	0.73%	805,258	$18,376,000	—	30 Sep 2021	13F
NORTHERN TRUST CORP	13F	Company	0.55%	606,597	$13,843,000	—	30 Sep 2021	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.54%	594,259	$13,561,000	—	30 Sep 2021	13F
VOLORIDGE INVESTMENT MANAGEMENT, LLC	13F	Company	0.39%	425,902	$9,719,000	—	30 Sep 2021	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.37%	406,112	$9,268,000	—	30 Sep 2021	13F
Nuveen Asset Management, LLC	13F	Company	0.32%	349,111	$7,967,000	—	30 Sep 2021	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	0.31%	340,486	$7,770,000	—	30 Sep 2021	13F
BAILLIE GIFFORD & CO	13F	Company	0.31%	340,352	$7,767,000	—	30 Sep 2021	13F
New Leaf Venture Partners, L.L.C.	13F	Company	0.31%	339,569	$7,749,000	—	30 Sep 2021	13F
MARSHALL WACE, LLP	13F	Company	0.28%	312,561	$7,132,000	—	30 Sep 2021	13F
Pier Capital, LLC	13F	Company	0.28%	306,536	$6,995,000	—	30 Sep 2021	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.24%	269,142	$6,142,000	—	30 Sep 2021	13F
BAKER BROS. ADVISORS LP	13F	Company	0.22%	239,228	$5,459,000	—	30 Sep 2021	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.19%	214,550	$4,896,000	—	30 Sep 2021	13F
Bank of New York Mellon Corp	13F	Company	0.17%	184,221	$4,204,000	—	30 Sep 2021	13F
Alphabet Inc.	13F	Company	0.16%	175,866	$4,013,000	—	30 Sep 2021	13F
CITADEL ADVISORS LLC	13F	Company	0.16%	174,170	$3,975,000	—	30 Sep 2021	13F
SCHRODER INVESTMENT MANAGEMENT GROUP	13F	Company	0.15%	160,315	$3,658,000	—	30 Sep 2021	13F
TWO SIGMA ADVISERS, LP	13F	Company	0.14%	150,200	$3,428,000	—	30 Sep 2021	13F
UBS Group AG	13F	Company	0.13%	141,251	$3,223,000	—	30 Sep 2021	13F
Rafferty Asset Management, LLC	13F	Company	0.12%	136,905	$3,124,000	—	30 Sep 2021	13F
Cannell & Co.	13F	Company	0.12%	135,122	$3,083,000	—	30 Sep 2021	13F
SUSQUEHANNA INTERNATIONAL GROUP, LLP	13F	Company	0.11%	117,067	$2,671,000	—	30 Sep 2021	13F
Swiss National Bank	13F	Company	0.1%	114,000	$2,601,000	—	30 Sep 2021	13F
NORGES BANK	13F	Company	0.1%	110,649	$2,525,000	—	30 Sep 2021	13F
DAFNA Capital Management LLC	13F	Company	0.1%	107,412	$2,451,000	—	30 Sep 2021	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	0.09%	104,142	$2,377,000	—	30 Sep 2021	13F
PDT Partners, LLC	13F	Company	0.09%	102,063	$2,329,000	—	30 Sep 2021	13F
ALPS ADVISORS INC	13F	Company	0.09%	99,127	$2,262,000	—	30 Sep 2021	13F
CITIGROUP INC	13F	Company	0.09%	96,507	$2,202,000	—	30 Sep 2021	13F
JANE STREET GROUP, LLC	13F	Company	0.08%	87,404	$1,995,000	—	30 Sep 2021	13F
STATE OF WISCONSIN INVESTMENT BOARD	13F	Company	0.08%	86,900	$1,983,000	—	30 Sep 2021	13F
Squarepoint Ops LLC	13F	Company	0.08%	84,674	$1,932,000	—	30 Sep 2021	13F
Ghost Tree Capital, LLC	13F	Company	0.07%	80,000	$1,826,000	—	30 Sep 2021	13F
SG Americas Securities, LLC	13F	Company	0.07%	79,242	$1,808,000	—	30 Sep 2021	13F

Institutional Holders of Alector, Inc. - Common Stock, $0.0001 par value per share (ALEC) as of Q4 2021

As of 31 Dec 2021, Alector, Inc. - Common Stock, $0.0001 par value per share (ALEC) was held by 160 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 54,728,224 shares. The largest 10 holders included VANGUARD GROUP INC, BlackRock Inc., FEDERATED HERMES, INC., EcoR1 Capital, LLC, FMR LLC, STATE STREET CORP, JPMORGAN CHASE & CO, FRANKLIN RESOURCES INC, MORGAN STANLEY, and PRICE T ROWE ASSOCIATES INC /MD/. This page lists 160 institutional shareholders reporting positions in this security for the Q4 2021 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q4 2021 vs Q3 2021 Across Filers

Q3 2021 holders

144

Q4 2021 holders

160

Holder diff

Investor	Q3 2021 Shares	Q4 2021 Shares	Share Diff	Share Chg %	Q3 2021 Value $	Q4 2021 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.