INTERDIGITAL INC

Ticker: IDCC CUSIP: 45867G101 Class: EQTY

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

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

Q4 2011
Shares 6,530 Value ($000) $285 Avg Close — Range —
Q3 2011
Shares 6,530 Value ($000) $304 Avg Close — Range —
Q2 2011
Shares 19,830 Value ($000) $810 Avg Close — Range —