CUBIST PHARMACEUTICALS INC

CUSIP: 229678107 Class: COM

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

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

Q4 2014
Shares 53,512 Value ($000) $5,386 Avg Close — Range —
Q2 2014
Shares 1,359 Value ($000) $95 Avg Close — Range —