ARCH COAL INC

CUSIP: 039380100 Class: COM

STATE OF MICHIGAN RETIREMENT SYSTEM's Holding History (CIK: 0000762152)

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

Q3 2013
Shares 98,900 Value ($000) $406 Avg Close — Range —
Q2 2013
Shares 97,700 Value ($000) $369 Avg Close — Range —