BIOSPECIFICS TECHNOLOGIES CO

CUSIP: 090931106 Class: COM

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

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

Q4 2019
Shares 13,447 Value ($000) $766 Avg Close — Range —
Q3 2019
Shares 16,886 Value ($000) $904 Avg Close — Range —