ZOLTEK COS INC

CUSIP: 98975W104 Class: CMN

Swiss National Bank's Holding History (CIK: 0001582202)

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

Q4 2013
Shares 23,400 Value ($000) $392 Avg Close — Range —
Q3 2013
Shares 23,400 Value ($000) $391 Avg Close — Range —
Q2 2013
Shares 25,200 Value ($000) $325 Avg Close — Range —