ALECTOR INC

Ticker: ALEC CUSIP: 014442107 Class: COM

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 1,166,817 Value ($000) $1,820 Avg Close $1.77 Range $1.09 - $3.40
Q3 2025
Shares 151,643 Value ($000) $449 Avg Close $2.20 Range $1.34 - $3.28
Q1 2025
Shares 59,099 Value ($000) $73 Avg Close $1.63 Range $1.20 - $2.15
Q4 2024
Shares 48,448 Value ($000) $92 Avg Close $3.76 Range $1.68 - $6.14
Q3 2024
Shares 54,000 Value ($000) $252 Avg Close $5.36 Range $4.22 - $6.78
Q2 2024
Shares 52,609 Value ($000) $239 Avg Close $5.15 Range $4.11 - $6.25
Q1 2024
Shares 177,278 Value ($000) $1,067 Avg Close $6.54 Range $5.49 - $8.90
Q2 2022
Shares 629,852 Value ($000) $6,399 Avg Close $9.97 Range $7.50 - $14.63
Q1 2022
Shares 511,140 Value ($000) $7,284 Avg Close $15.82 Range $11.41 - $21.25
Q4 2021
Shares 1,080,854 Value ($000) $22,320 Avg Close $22.55 Range $18.61 - $27.00
Q3 2021
Shares 312,561 Value ($000) $7,132 Avg Close $28.01 Range $20.71 - $43.32
Q4 2020
Shares 80,371 Value ($000) $1,216 Avg Close $12.43 Range $9.12 - $17.31
Q3 2020
Shares 131,418 Value ($000) $1,385 Avg Close $16.17 Range $10.45 - $25.73
Q2 2020
Shares 93,237 Value ($000) $2,279 Avg Close $27.60 Range $21.26 - $34.89
Q4 2019
Shares 15,968 Value ($000) $275 Avg Close $17.00 Range $13.71 - $21.03