WEST FRASER TIMBER CO LTD

Ticker: WFG CUSIP: 952845105 Class: COM

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

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

Q4 2021

Shares 77,944 Value ($000) $7,441 Avg Close $86.50 Range $78.49 - $97.59

Q3 2021

Shares 78,484 Value ($000) $6,609 Avg Close $74.55 Range $64.72 - $85.44

Q2 2021

Shares 70,309 Value ($000) $5,052 Avg Close $76.84 Range $67.08 - $91.53

Q1 2021

Shares 143,726 Value ($000) $10,339 Avg Close $65.90 Range $58.99 - $78.83

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2021	77,944	$7,441	$86.50	$78.49 - $97.59
Q3 2021	78,484	$6,609	$74.55	$64.72 - $85.44
Q2 2021	70,309	$5,052	$76.84	$67.08 - $91.53
Q1 2021	143,726	$10,339	$65.90	$58.99 - $78.83