COWEN GROUP INC

CUSIP: 223622103 Class: COM

DRIEHAUS CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000938206)

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

Q2 2014
Shares 16,670 Value ($000) $70 Avg Close — Range —
Q1 2014
Shares 17,000 Value ($000) $75 Avg Close — Range —
Q4 2013
Shares 174,288 Value ($000) $681 Avg Close — Range —