SIERRA METALS INC

CUSIP: 82639W106 Class: COM

Grantham, Mayo, Van Otterloo & Co. LLC's Holding History (CIK: 0001352662)

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

Q1 2021
Shares 386,700 Value ($000) $1,218 Avg Close — Range —
Q4 2020
Shares 164,800 Value ($000) $547 Avg Close — Range —