NATIONAL INSTRS CORP

CUSIP: 63651810 Class: COM

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q3 2016
Shares 478,850 Value ($000) $13,599 Avg Close — Range —
Q2 2016
Shares 218,588 Value ($000) $5,989 Avg Close — Range —
Q3 2015
Shares 74,464 Value ($000) $2,194 Avg Close — Range —
Q2 2015
Shares 74,464 Value ($000) $2,194 Avg Close — Range —
Q1 2015
Shares 26,800 Value ($000) $859 Avg Close — Range —
Q4 2014
Shares 23,799 Value ($000) $740 Avg Close — Range —
Q3 2014
Shares 11,803 Value ($000) $365 Avg Close — Range —
Q2 2014
Shares 124,965 Value ($000) $4,048 Avg Close — Range —
Q1 2014
Shares 66,632 Value ($000) $1,912 Avg Close — Range —
Q4 2013
Shares 157,384 Value ($000) $5,039 Avg Close — Range —