ARCH COAL INC

CUSIP: 039380100 Class: COM

RATIONAL ADVISORS LLC's Holding History (CIK: 0001143565)

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

Q3 2011
Shares 25,550 Value ($000) $373 Avg Close — Range —
Q2 2011
Shares 31,020 Value ($000) $827 Avg Close — Range —
Q1 2011
Shares 1,300 Value ($000) $47 Avg Close — Range —
Q4 2010
Shares 50,015 Value ($000) $1,754 Avg Close — Range —
Q1 2010
Shares 10,300 Value ($000) $235 Avg Close — Range —
Q1 2009
Shares 16,500 Value ($000) $221 Avg Close — Range —