NATIONAL OILWELL VARCO INC

CUSIP: 637071101 Class: COM

DUFF & PHELPS INVESTMENT MANAGEMENT CO's Holding History (CIK: 0000765443)

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

Q4 2014
Shares 8,235 Value ($000) $540 Avg Close — Range —
Q3 2014
Shares 8,535 Value ($000) $650 Avg Close — Range —
Q2 2014
Shares 8,895 Value ($000) $733 Avg Close — Range —
Q1 2014
Shares 8,895 Value ($000) $693 Avg Close — Range —
Q4 2013
Shares 8,895 Value ($000) $707 Avg Close — Range —
Q3 2013
Shares 8,565 Value ($000) $669 Avg Close — Range —
Q2 2013
Shares 8,455 Value ($000) $583 Avg Close — Range —