DUN & BRADSTREET CORP DEL NE

CUSIP: 26483E100 Class: COM

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q3 2014
Shares 257 Value ($000) $30 Avg Close — Range —
Q1 2014
Shares 8,247 Value ($000) $819 Avg Close — Range —