CONSTELLATION ENERGY GROUP INC

CUSIP: 210371100 Class: COM

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

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

Q1 2010
Shares 9,100 Value ($000) $320 Avg Close — Range —
Q4 2009
Shares 41,100 Value ($000) $1,445 Avg Close — Range —
Q3 2009
Shares 37,100 Value ($000) $1,201 Avg Close — Range —
Q2 2009
Shares 9,100 Value ($000) $242 Avg Close — Range —
Q1 2009
Shares 9,100 Value ($000) $188 Avg Close — Range —