NATIONAL OILWELL VARCO INC

CUSIP: 637071101 Class: COM

CORRADO ADVISORS, LLC's Holding History (CIK: 0001482611)

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

Q4 2014
Shares 114,966 Value ($000) $7,534 Avg Close — Range —
Q3 2014
Shares 116,755 Value ($000) $8,885 Avg Close — Range —
Q2 2014
Shares 159,825 Value ($000) $13,162 Avg Close — Range —
Q1 2014
Shares 163,264 Value ($000) $12,713 Avg Close — Range —
Q4 2013
Shares 160,081 Value ($000) $12,731 Avg Close — Range —
Q3 2013
Shares 158,916 Value ($000) $12,413 Avg Close — Range —
Q2 2013
Shares 156,255 Value ($000) $10,766 Avg Close — Range —
Q1 2013
Shares 143,707 Value ($000) $10,167 Avg Close — Range —
Q4 2012
Shares 140,679 Value ($000) $9,615 Avg Close — Range —
Q3 2012
Shares 139,141 Value ($000) $11,147 Avg Close — Range —
Q2 2012
Shares 139,407 Value ($000) $8,983 Avg Close — Range —
Q1 2012
Shares 139,191 Value ($000) $10,949 Avg Close — Range —
Q4 2011
Shares 197,250 Value ($000) $13,411 Avg Close — Range —
Q3 2011
Shares 202,914 Value ($000) $10,393 Avg Close — Range —
Q1 2011
Shares 213,366 Value ($000) $16,914 Avg Close — Range —
Q4 2010
Shares 221,308 Value ($000) $14,883 Avg Close — Range —
Q3 2010
Shares 223,486 Value ($000) $9,938 Avg Close — Range —
Q2 2010
Shares 219,918 Value ($000) $7,273 Avg Close — Range —
Q1 2010
Shares 224,702 Value ($000) $9,118 Avg Close — Range —
Q4 2009
Shares 216,921 Value ($000) $9,564 Avg Close — Range —