MEDIDATA SOLUTIONS INC

CUSIP: 58471A105 Class: COM

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

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

Q3 2018
Shares 25,659 Value ($000) $1,881 Avg Close — Range —
Q2 2018
Shares 32,574 Value ($000) $2,624 Avg Close — Range —
Q4 2017
Shares 15,355 Value ($000) $973 Avg Close — Range —
Q3 2017
Shares 45,470 Value ($000) $3,549 Avg Close — Range —
Q2 2017
Shares 52,937 Value ($000) $4,140 Avg Close — Range —
Q3 2014
Shares 14,404 Value ($000) $638 Avg Close — Range —
Q2 2014
Shares 17,991 Value ($000) $770 Avg Close — Range —
Q1 2014
Shares 244,793 Value ($000) $13,302 Avg Close — Range —
Q4 2013
Shares 415,307 Value ($000) $25,155 Avg Close — Range —
Q3 2013
Shares 207,196 Value ($000) $20,498 Avg Close — Range —
Q2 2013
Shares 195,418 Value ($000) $15,135 Avg Close — Range —