NATIONAL OILWELL VARCO INC

CUSIP: 637071101 Class: COM

GAMCO INVESTORS, INC. ET AL's Holding History (CIK: 0000807249)

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

Q3 2017
Shares 32,000 Value ($000) $1,143 Avg Close — Range —
Q2 2017
Shares 36,000 Value ($000) $1,186 Avg Close — Range —
Q1 2017
Shares 36,000 Value ($000) $1,443 Avg Close — Range —
Q4 2016
Shares 36,200 Value ($000) $1,355 Avg Close — Range —
Q3 2016
Shares 38,200 Value ($000) $1,403 Avg Close — Range —
Q2 2016
Shares 37,600 Value ($000) $1,265 Avg Close — Range —
Q1 2016
Shares 30,670 Value ($000) $954 Avg Close — Range —
Q4 2015
Shares 24,670 Value ($000) $826 Avg Close — Range —
Q3 2015
Shares 21,770 Value ($000) $820 Avg Close — Range —
Q2 2015
Shares 15,850 Value ($000) $765 Avg Close — Range —
Q1 2015
Shares 21,600 Value ($000) $1,080 Avg Close — Range —
Q4 2014
Shares 27,300 Value ($000) $1,789 Avg Close — Range —
Q3 2014
Shares 19,400 Value ($000) $1,476 Avg Close — Range —
Q2 2014
Shares 13,500 Value ($000) $1,112 Avg Close — Range —