GENZYME CORP

CUSIP: 372917104 Class: COMMON STOCK

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

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

Q1 2011
Shares 4,000 Value ($000) $305 Avg Close — Range —
Q4 2010
Shares 4,000 Value ($000) $285 Avg Close — Range —
Q1 2010
Shares 5,700 Value ($000) $295 Avg Close — Range —
Q4 2009
Shares 9,100 Value ($000) $446 Avg Close — Range —
Q3 2009
Shares 9,100 Value ($000) $516 Avg Close — Range —
Q2 2009
Shares 9,100 Value ($000) $507 Avg Close — Range —
Q1 2009
Shares 41,000 Value ($000) $2,435 Avg Close — Range —