DOCUMENT SEC SYS INC

CUSIP: 25614T101 Class: CMN

CITADEL ADVISORS LLC's Holding History (CIK: 0001423053)

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

Q2 2016
Shares 136,954 Value ($000) $28 Avg Close — Range —
Q4 2015
Shares 35,384 Value ($000) $6 Avg Close — Range —
Q1 2015
Shares 44,043 Value ($000) $16 Avg Close — Range —
Q4 2014
Shares 45,332 Value ($000) $20 Avg Close — Range —
Q2 2014
Shares 14,403 Value ($000) $20 Avg Close — Range —