QUIDEL CORP

CUSIP: 74838J101 Class: COMMON STOCK

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

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

Q4 2021
Shares 14,570 Value ($000) $1,967 Avg Close — Range —
Q3 2021
Shares 17,415 Value ($000) $2,458 Avg Close — Range —
Q2 2021
Shares 17,006 Value ($000) $2,179 Avg Close — Range —
Q1 2021
Shares 21,487 Value ($000) $2,749 Avg Close — Range —
Q4 2020
Shares 12,233 Value ($000) $2,198 Avg Close — Range —
Q3 2020
Shares 12,828 Value ($000) $2,814 Avg Close — Range —
Q2 2020
Shares 18,289 Value ($000) $4,092 Avg Close — Range —
Q1 2020
Shares 4,149 Value ($000) $406 Avg Close — Range —
Q4 2019
Shares 6,573 Value ($000) $493 Avg Close — Range —
Q3 2019
Shares 8,000 Value ($000) $491 Avg Close — Range —
Q4 2018
Shares 2,029 Value ($000) $99 Avg Close — Range —
Q3 2018
Shares 9,360 Value ($000) $610 Avg Close — Range —
Q4 2017
Shares 4,000 Value ($000) $173 Avg Close — Range —
Q4 2015
Shares 579 Value ($000) $12 Avg Close — Range —
Q3 2015
Shares 579 Value ($000) $11 Avg Close — Range —
Q2 2014
Shares 600 Value ($000) $13 Avg Close — Range —
Q1 2014
Shares 2,300 Value ($000) $63 Avg Close — Range —