ENVISION HEALTHCARE CORP

CUSIP: 29414D100 Class: COM

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

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

Q3 2018
Shares 334,026 Value ($000) $15,275 Avg Close — Range —
Q2 2018
Shares 64,388 Value ($000) $2,834 Avg Close — Range —
Q1 2018
Shares 41,025 Value ($000) $1,577 Avg Close — Range —
Q4 2017
Shares 29,593 Value ($000) $1,023 Avg Close — Range —
Q2 2017
Shares 36,450 Value ($000) $2,296 Avg Close — Range —
Q1 2017
Shares 11,857 Value ($000) $723 Avg Close — Range —