ALTAIR ENGR INC

CUSIP: 021369103 Class: Common Stock

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

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

Q4 2024
Shares 500 Value ($000) $55 Avg Close — Range —
Q4 2021
Shares 100 Value ($000) $8 Avg Close — Range —
Q2 2020
Shares 600 Value ($000) $24 Avg Close — Range —
Q1 2020
Shares 600 Value ($000) $16 Avg Close — Range —
Q4 2019
Shares 800 Value ($000) $29 Avg Close — Range —
Q3 2019
Shares 100 Value ($000) $3 Avg Close — Range —