MEMC ELECTR MATLS INC

CUSIP: 552715104 Class: COM

Zurcher Kantonalbank (Zurich Cantonalbank)'s Holding History (CIK: 0001368163)

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

Q1 2013
Shares 45,500 Value ($000) $200 Avg Close — Range —
Q4 2012
Shares 31,000 Value ($000) $100 Avg Close — Range —
Q3 2012
Shares 41,000 Value ($000) $113 Avg Close — Range —
Q2 2012
Shares 36,100 Value ($000) $78 Avg Close — Range —
Q1 2012
Shares 36,100 Value ($000) $130 Avg Close — Range —
Q4 2011
Shares 35,000 Value ($000) $138 Avg Close — Range —