ENVISION HEALTHCARE CORP

CUSIP: 29414D100 Class: COM

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q1 2018
Shares 11,985 Value ($000) $461 Avg Close — Range —
Q4 2017
Shares 26,126 Value ($000) $903 Avg Close — Range —
Q3 2017
Shares 79,013 Value ($000) $3,552 Avg Close — Range —
Q2 2017
Shares 31,964 Value ($000) $2,003 Avg Close — Range —
Q1 2017
Shares 214 Value ($000) $13 Avg Close — Range —