MEDIDATA SOLUTIONS INC

CUSIP: 58471A105 Class: COM

Calamos Advisors LLC's Holding History (CIK: 0001316507)

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

Q3 2014
Shares 488,075 Value ($000) $21,617 Avg Close — Range —
Q2 2014
Shares 540,709 Value ($000) $23,148 Avg Close — Range —
Q1 2014
Shares 512,033 Value ($000) $27,824 Avg Close — Range —
Q4 2013
Shares 505,995 Value ($000) $30,648 Avg Close — Range —
Q3 2013
Shares 267,480 Value ($000) $26,462 Avg Close — Range —
Q2 2013
Shares 237,781 Value ($000) $18,416 Avg Close — Range —