ProShares UltraShort S&P 500

CUSIP: 74347b300 Class: COM

CHECK CAPITAL MANAGEMENT INC/CA's Holding History (CIK: 0001032814)

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

Q3 2013
Shares 9,126 Value ($000) $334 Avg Close — Range —
Q2 2013
Shares 9,410 Value ($000) $384 Avg Close — Range —
Q1 2013
Shares 8,660 Value ($000) $381 Avg Close — Range —
Q4 2012
Shares 5,675 Value ($000) $307 Avg Close — Range —