WASHINGTON POST CO

CUSIP: 939640108 Class: CL B

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

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

Q3 2013
Shares 1,746 Value ($000) $1,067 Avg Close — Range —
Q2 2013
Shares 1,846 Value ($000) $893 Avg Close — Range —