DTS INC

CUSIP: 23335C101 Class: COM

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

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

Q4 2014
Shares 6,100 Value ($000) $188 Avg Close — Range —
Q2 2014
Shares 1,700 Value ($000) $31 Avg Close — Range —
Q2 2013
Shares 2,153 Value ($000) $44 Avg Close — Range —