CERADYNE INC

CUSIP: 156710105 Class: COMMON STOCK

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

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

Q1 2010
Shares 78,000 Value ($000) $1,771 Avg Close — Range —
Q4 2009
Shares 63,000 Value ($000) $1,211 Avg Close — Range —
Q3 2009
Shares 63,000 Value ($000) $1,155 Avg Close — Range —
Q2 2009
Shares 63,000 Value ($000) $1,113 Avg Close — Range —
Q1 2009
Shares 63,000 Value ($000) $1,142 Avg Close — Range —