NATIONAL OILWELL VARCO INC

CUSIP: 637071101 Class: COM

Texas Yale Capital Corp.'s Holding History (CIK: 0001332342)

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

Q3 2018
Shares 8,100 Value ($000) $349 Avg Close — Range —
Q2 2018
Shares 8,100 Value ($000) $352 Avg Close — Range —
Q1 2018
Shares 8,100 Value ($000) $298 Avg Close — Range —
Q4 2017
Shares 8,100 Value ($000) $292 Avg Close — Range —
Q3 2017
Shares 8,100 Value ($000) $289 Avg Close — Range —
Q2 2017
Shares 8,100 Value ($000) $267 Avg Close — Range —
Q1 2017
Shares 10,600 Value ($000) $425 Avg Close — Range —
Q4 2016
Shares 10,600 Value ($000) $397 Avg Close — Range —
Q3 2016
Shares 12,250 Value ($000) $450 Avg Close — Range —
Q2 2016
Shares 12,250 Value ($000) $412 Avg Close — Range —
Q1 2016
Shares 14,750 Value ($000) $459 Avg Close — Range —
Q4 2015
Shares 14,750 Value ($000) $494 Avg Close — Range —
Q3 2015
Shares 9,750 Value ($000) $367 Avg Close — Range —
Q2 2015
Shares 9,750 Value ($000) $471 Avg Close — Range —
Q1 2015
Shares 9,750 Value ($000) $487 Avg Close — Range —
Q4 2014
Shares 10,900 Value ($000) $714 Avg Close — Range —
Q3 2013
Shares 10,070 Value ($000) $787 Avg Close — Range —
Q2 2013
Shares 10,070 Value ($000) $694 Avg Close — Range —