CEPHEID

CUSIP: 15670R107 Class: CMN

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

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

Q3 2016
Shares 5,701 Value ($000) $300 Avg Close — Range —
Q2 2016
Shares 1,293 Value ($000) $40 Avg Close — Range —
Q4 2015
Shares 5,969 Value ($000) $218 Avg Close — Range —
Q3 2015
Shares 370 Value ($000) $17 Avg Close — Range —
Q2 2015
Shares 8,108 Value ($000) $496 Avg Close — Range —
Q2 2014
Shares 610 Value ($000) $29 Avg Close — Range —
Q4 2013
Shares 171 Value ($000) $8 Avg Close — Range —
Q2 2013
Shares 25 Value ($000) $1 Avg Close — Range —