STEC INC

CUSIP: 784774101 Class: CMN

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

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

Q4 2010
Shares 20,000 Value ($000) $353 Avg Close — Range —
Q4 2009
Shares 60,400 Value ($000) $987 Avg Close — Range —
Q3 2009
Shares 54,900 Value ($000) $1,614 Avg Close — Range —
Q2 2009
Shares 94,700 Value ($000) $2,196 Avg Close — Range —
Q1 2009
Shares 91,300 Value ($000) $672 Avg Close — Range —