MTS SYS CORP

CUSIP: 553777103 Class: COM

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

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

Q4 2020
Shares 3,290 Value ($000) $191 Avg Close — Range —
Q3 2020
Shares 7,013 Value ($000) $134 Avg Close — Range —
Q2 2020
Shares 1,100 Value ($000) $19 Avg Close — Range —
Q4 2019
Shares 666 Value ($000) $32 Avg Close — Range —