SUPERTEX INC

CUSIP: 868532102 Class: COM

PRINCIPAL FINANCIAL GROUP INC's Holding History (CIK: 0001126328)

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

Q1 2014
Shares 63,082 Value ($000) $2,080 Avg Close — Range —
Q4 2013
Shares 59,976 Value ($000) $1,502 Avg Close — Range —
Q3 2013
Shares 56,929 Value ($000) $1,443 Avg Close — Range —
Q2 2013
Shares 54,710 Value ($000) $1,308 Avg Close — Range —