ALEC

Alector, Inc.

Company with tickers: ALEC

CIK

1653087

CUSIP

014442107

Shares Outstanding

111,025,187

Website

https://www.alector.com

13F Activity (30d)

11 filings 7 filers

Total shares sold short and not yet covered, reported to FINRA by broker-dealers and published twice a month (bi-monthly). Days to cover divides the short position by average daily volume; a high value (above 5) can signal short-squeeze potential.

Short Squeeze Score

55/100

Short interest 4.6% of shares — P70 Days to cover 6.6 — P82 Short-volume trend -13.9% — P12

Peer-relative percentile rank across all stocks reporting short interest at the latest settlement date (2026-05-29). Equal-weight mean of the available factors.

1M 3M 6M 1Y 5Y All

Short Interest History

Settlement Date	Current Position	Previous Position	Change	Avg Daily Volume	Days to Cover
2020-01-15	4,583,621	4,275,138	+308,483	281,059	16.31
2020-01-31	4,999,889	4,583,621	+416,268	825,655	6.06
2020-02-14	5,627,955	4,999,889	+628,066	899,589	6.26
2020-02-28	5,834,073	5,627,955	+206,118	632,934	9.22
2020-03-13	5,869,979	5,834,073	+35,906	453,833	12.93
2020-03-31	5,375,541	5,869,979	-494,438	589,356	9.12
2020-04-15	5,298,703	5,375,541	-76,838	432,103	12.26
2020-04-30	5,122,084	5,298,703	-176,619	339,509	15.09
2020-05-15	5,173,620	5,122,115	+51,505	357,059	14.49
2020-05-29	5,164,348	5,173,620	-9,272	420,148	12.29
2020-06-15	5,761,049	5,164,348	+596,701	390,745	14.74
2020-06-30	6,832,012	5,761,049	+1,070,963	909,527	7.51
2020-07-15	6,732,454	6,832,012	-99,558	480,648	14.01
2020-07-31	7,241,359	6,732,454	+508,905	1,314,642	5.51
2020-08-14	8,747,924	7,241,359	+1,506,565	977,280	8.95
2020-08-31	8,292,452	8,747,924	-455,472	596,799	13.89
2020-09-15	8,428,750	8,292,452	+136,298	575,419	14.65
2020-09-30	10,671,190	8,428,750	+2,242,440	1,130,499	9.44
2020-10-15	9,971,794	10,671,190	-699,396	1,025,205	9.73
2020-10-30	10,427,382	9,971,794	+455,588	735,583	14.18
2020-11-13	9,907,873	10,427,382	-519,509	726,556	13.64
2020-11-30	8,610,031	9,907,873	-1,297,842	514,632	16.73
2020-12-15	8,296,272	8,610,031	-313,759	539,711	15.37
2020-12-31	6,958,265	8,296,272	-1,338,007	665,454	10.46
2021-01-15	5,360,060	6,958,265	-1,598,205	347,050	15.44
2021-01-29	5,083,536	5,360,060	-276,524	486,705	10.44
2021-02-12	5,050,120	5,083,536	-33,416	514,461	9.82
2021-02-26	5,408,887	5,050,120	+358,767	553,731	9.77
2021-03-15	5,474,066	5,408,887	+65,179	561,354	9.75
2021-03-31	5,808,385	5,474,066	+334,319	922,536	6.30
2021-04-15	6,142,320	5,808,385	+333,935	556,045	11.05
2021-04-30	6,720,256	6,142,320	+577,936	447,581	15.01
2021-05-14	6,627,879	6,720,256	-92,377	622,941	10.64
2021-05-28	6,415,000	6,627,879	-212,879	323,299	19.84
2021-06-15	6,641,774	6,412,250	+229,524	641,253	10.36
2021-06-30	7,403,872	6,641,774	+762,098	737,139	10.04
2021-07-15	6,178,507	7,403,872	-1,225,365	5,571,129	1.11
2021-07-30	6,344,114	6,178,507	+165,607	1,259,674	5.04
2021-08-13	6,170,820	6,344,114	-173,294	700,308	8.81
2021-08-31	5,901,179	6,170,820	-269,641	526,186	11.22
2021-09-15	6,787,086	5,901,179	+885,907	1,124,007	6.04
2021-09-30	7,514,932	6,787,086	+727,846	648,543	11.59
2021-10-15	7,320,329	7,514,932	-194,603	351,178	20.85
2021-10-29	7,345,964	7,320,329	+25,635	361,928	20.30
2021-11-15	7,095,240	7,345,964	-250,724	599,347	11.84
2021-11-30	7,364,592	7,095,240	+269,352	447,728	16.45
2021-12-15	7,607,996	7,364,592	+243,404	878,565	8.66
2021-12-31	7,141,704	7,607,996	-466,292	620,894	11.50
2022-01-14	7,106,936	7,141,704	-34,768	722,386	9.84
2022-01-31	7,040,053	7,106,936	-66,883	913,698	7.71

Showing 1–50 of 154 settlements