DOCUMENT SEC SYS INC

CUSIP: 25614T309 Class: COM NEW

Virtu Financial LLC's Holding History (CIK: 0001533964)

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

Q2 2021
Shares 44,041 Value ($000) $79 Avg Close — Range —
Q1 2021
Shares 126,374 Value ($000) $456 Avg Close — Range —