INSIGNIA SYS INC

CUSIP: 45765Y105 Class: COM

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

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

Q4 2020
Shares 100 Value ($000) $0 Avg Close — Range —
Q3 2020
Shares 100 Value ($000) $0 Avg Close — Range —
Q2 2015
Shares 21,810 Value ($000) $60 Avg Close — Range —