ALDER BIOPHARMACEUTICALS INC

CUSIP: 014339105 Class: COM

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

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

Q3 2019
Shares 25,332 Value ($000) $478 Avg Close — Range —
Q2 2019
Shares 1,172 Value ($000) $14 Avg Close — Range —
Q1 2019
Shares 672 Value ($000) $9 Avg Close — Range —
Q4 2018
Shares 4,955 Value ($000) $51 Avg Close — Range —
Q3 2018
Shares 6,155 Value ($000) $102 Avg Close — Range —
Q2 2018
Shares 5,308 Value ($000) $84 Avg Close — Range —
Q1 2018
Shares 8,845 Value ($000) $112 Avg Close — Range —
Q4 2017
Shares 7,277 Value ($000) $83 Avg Close — Range —
Q3 2017
Shares 27,297 Value ($000) $334 Avg Close — Range —
Q2 2017
Shares 24,893 Value ($000) $285 Avg Close — Range —