ADVANCED ENERGY INDS

CUSIP: 7973100 Class: COM

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

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

Q3 2014
Shares 400 Value ($000) $8 Avg Close — Range —
Q2 2014
Shares 939 Value ($000) $18 Avg Close — Range —
Q1 2014
Shares 2,538 Value ($000) $62 Avg Close — Range —
Q3 2013
Shares 99 Value ($000) $2 Avg Close — Range —