CHEMBIO DIAGNOSTICS INC

CUSIP: 163572209 Class: COM NEW

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

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

Q2 2021
Shares 10,977 Value ($000) $33 Avg Close — Range —
Q4 2020
Shares 176,981 Value ($000) $841 Avg Close — Range —
Q4 2018
Shares 15,079 Value ($000) $85 Avg Close — Range —