STAMPS COM INC

CUSIP: 852857200 Class: COM NEW

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

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

Q3 2021
Shares 10,815 Value ($000) $3,567 Avg Close — Range —
Q2 2020
Shares 2,300 Value ($000) $422 Avg Close — Range —
Q4 2017
Shares 2,567 Value ($000) $483 Avg Close — Range —
Q3 2017
Shares 90 Value ($000) $18 Avg Close — Range —
Q1 2017
Shares 3,373 Value ($000) $399 Avg Close — Range —
Q4 2016
Shares 7,251 Value ($000) $831 Avg Close — Range —
Q1 2016
Shares 635 Value ($000) $67 Avg Close — Range —
Q3 2014
Shares 121 Value ($000) $4 Avg Close — Range —
Q2 2014
Shares 747 Value ($000) $25 Avg Close — Range —
Q3 2013
Shares 826 Value ($000) $38 Avg Close — Range —
Q2 2013
Shares 5,307 Value ($000) $209 Avg Close — Range —