SUPERTEX INC

CUSIP: 868532102 Class: COM

MASON STREET ADVISORS, LLC's Holding History (CIK: 0001167711)

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

Q1 2014
Shares 1,271 Value ($000) $42 Avg Close — Range —
Q4 2013
Shares 1,635 Value ($000) $41 Avg Close — Range —
Q3 2013
Shares 1,530 Value ($000) $39 Avg Close — Range —
Q2 2013
Shares 1,436 Value ($000) $34 Avg Close — Range —