COVANCE INC

CUSIP: 222816100 Class: COM

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

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

Q4 2014
Shares 26,950 Value ($000) $2,798 Avg Close — Range —
Q3 2014
Shares 26,850 Value ($000) $2,113 Avg Close — Range —
Q2 2014
Shares 27,050 Value ($000) $2,315 Avg Close — Range —
Q1 2014
Shares 26,650 Value ($000) $2,769 Avg Close — Range —
Q4 2013
Shares 26,250 Value ($000) $2,312 Avg Close — Range —
Q3 2013
Shares 26,050 Value ($000) $2,252 Avg Close — Range —
Q2 2013
Shares 25,750 Value ($000) $1,961 Avg Close — Range —