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ALEChistorical intraday data

ListedAlector, Inc. Common StockNasdaq

Alector, Inc. Common Stock (ALEC) is a common stock listed on Nasdaq. ALEC has 1,949 trading days on file, from February 7, 2019 to November 9, 2026, with 12,452,720 trades. There are 551,095 1-minute bars on file.

On file

First day
2019-02-07
Last day
2026-11-09
Trading days
1,949
Trades
12,452,720
1-minute bars
551,095
Bars, about
8.3 MB
Trades, about
172 MB
Quotes, about
202 MB

Sizes are approximate: this ticker’s share of the Parquet files.

Trading history

Trades per calendar year. Busiest year: 2021, with 2,163,273 trades over 252 trading days.

Symbols get reused, so the history under ALEC is not always one company.

Sample rows

ALEC1-minute bars, 2026-11-09, Eastern Time
ALEC 1-minute bars. Time is Eastern Time, prices are in USD.
Time (ET)OpenHighLowCloseVolumeTrades
09:302.292.332.28722.3311,160.90795230
09:322.292.32.292.36,63880
09:332.30012.30012.282.2922,22465
09:342.282.312.282.3146,41860
09:352.322.322.322.329429

ALEC by year

YearTrading days on fileTrades
2019227535,233
20202531,602,693
20212522,163,273
20222511,783,793
20232501,389,823
20242521,636,582
20252501,521,069
20262141,820,254