CMS ENERGY CORP

CUSIP: 125896BD1 Class: CNV

CONNING INC.'s Holding History (CIK: 0000801051)

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

Q1 2014
Shares 700,000 Value ($000) $1,512 Avg Close — Range —
Q4 2013
Shares 700,000 Value ($000) $1,382 Avg Close — Range —
Q3 2013
Shares 700,000 Value ($000) $1,344 Avg Close — Range —
Q2 2013
Shares 700,000 Value ($000) $1,386 Avg Close — Range —