ARCH COAL INC

CUSIP: 39380100 Class: COM

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

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

Q3 2014
Shares 276,715 Value ($000) $587 Avg Close — Range —
Q2 2014
Shares 438,205 Value ($000) $1,599 Avg Close — Range —
Q1 2014
Shares 22,737 Value ($000) $110 Avg Close — Range —
Q4 2013
Shares 16,081 Value ($000) $72 Avg Close — Range —
Q3 2013
Shares 11,513 Value ($000) $47 Avg Close — Range —