NATIONAL INSTRS CORP

CUSIP: 636518102 Class: Common Stock

RATIONAL ADVISORS LLC's Holding History (CIK: 0001143565)

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

Q4 2013
Shares 3,812 Value ($000) $122 Avg Close — Range —
Q3 2013
Shares 4,152 Value ($000) $128 Avg Close — Range —
Q2 2013
Shares 4,260 Value ($000) $119 Avg Close — Range —
Q1 2013
Shares 6,720 Value ($000) $220 Avg Close — Range —
Q1 2010
Shares 20,500 Value ($000) $684 Avg Close — Range —