BLACK BOX CORP DEL

CUSIP: 091826107 Class: COMMON STOCK

ProShare Advisors LLC's Holding History (CIK: 0001357955)

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

Q1 2014
Shares 16,648 Value ($000) $405 Avg Close — Range —
Q3 2013
Shares 10,594 Value ($000) $325 Avg Close — Range —
Q2 2013
Shares 11,302 Value ($000) $286 Avg Close — Range —