NATIONAL OILWELL VARCO INC

CUSIP: 637071101 Class: COM

Calamos Advisors LLC's Holding History (CIK: 0001316507)

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

Q1 2018
Shares 80,477 Value ($000) $2,963 Avg Close — Range —
Q4 2017
Shares 76,691 Value ($000) $2,762 Avg Close — Range —
Q3 2017
Shares 78,317 Value ($000) $2,798 Avg Close — Range —
Q2 2017
Shares 75,445 Value ($000) $2,485 Avg Close — Range —
Q1 2017
Shares 73,447 Value ($000) $2,944 Avg Close — Range —
Q4 2016
Shares 73,628 Value ($000) $2,757 Avg Close — Range —
Q3 2016
Shares 53,657 Value ($000) $1,971 Avg Close — Range —
Q2 2016
Shares 56,184 Value ($000) $1,891 Avg Close — Range —
Q1 2016
Shares 56,165 Value ($000) $1,747 Avg Close — Range —
Q4 2015
Shares 53,093 Value ($000) $1,778 Avg Close — Range —
Q3 2015
Shares 53,093 Value ($000) $1,999 Avg Close — Range —
Q2 2015
Shares 50,376 Value ($000) $2,432 Avg Close — Range —
Q1 2015
Shares 48,916 Value ($000) $2,445 Avg Close — Range —
Q4 2014
Shares 272,815 Value ($000) $17,878 Avg Close — Range —
Q3 2014
Shares 510,128 Value ($000) $38,821 Avg Close — Range —
Q2 2014
Shares 512,718 Value ($000) $42,222 Avg Close — Range —
Q1 2014
Shares 507,523 Value ($000) $39,521 Avg Close — Range —
Q4 2013
Shares 508,621 Value ($000) $40,451 Avg Close — Range —
Q3 2013
Shares 524,679 Value ($000) $40,983 Avg Close — Range —
Q2 2013
Shares 508,921 Value ($000) $35,065 Avg Close — Range —