NETSCOUT SYS INC

Ticker: NTCT CUSIP: 64115T104 Class: Common Stock

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

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

Q1 2013
Shares 795 Value ($000) $20 Avg Close $25.88 Range $23.74 - $28.28
Q4 2012
Shares 636 Value ($000) $17 Avg Close — Range —
Q3 2012
Shares 477 Value ($000) $12 Avg Close — Range —