ALDER BIOPHARMACEUTICALS INC

CUSIP: 14339105 Class: Com

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

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

Q3 2016
Shares 853 Value ($000) $28 Avg Close — Range —
Q2 2016
Shares 6,106 Value ($000) $152 Avg Close — Range —
Q1 2016
Shares 6,283 Value ($000) $154 Avg Close — Range —
Q4 2015
Shares 8,080 Value ($000) $267 Avg Close — Range —
Q3 2015
Shares 25,165 Value ($000) $824 Avg Close — Range —
Q2 2015
Shares 9,459 Value ($000) $501 Avg Close — Range —