NATIONAL OILWELL VARCO INC

CUSIP: 637071101 Class: COM

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

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

Q3 2013
Shares 37,716 Value ($000) $2,946 Avg Close — Range —
Q2 2013
Shares 51,107 Value ($000) $3,521 Avg Close — Range —