MTR GAMING GROUP INC

CUSIP: 553769100 Class: COM

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

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

Q1 2014
Shares 4,500 Value ($000) $23 Avg Close — Range —
Q4 2013
Shares 1,000 Value ($000) $5 Avg Close — Range —