MEMC ELECTR MATLS INC

CUSIP: 552715104 Class: COM

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

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

Q2 2011
Shares 94,400 Value ($000) $805 Avg Close — Range —
Q1 2011
Shares 193,700 Value ($000) $2,510 Avg Close — Range —
Q3 2009
Shares 134,850 Value ($000) $2,243 Avg Close — Range —
Q2 2009
Shares 147,350 Value ($000) $2,624 Avg Close — Range —
Q1 2009
Shares 152,750 Value ($000) $2,519 Avg Close — Range —