21VIANET GROUP INC

Ticker: VNET CUSIP: 90138A103 Class: SPONSORED ADS A

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

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

Q2 2014
Shares 875,510 Value ($000) $26,239 Avg Close — Range —
Q1 2014
Shares 626,696 Value ($000) $17,986 Avg Close — Range —