ORBITAL ATK INC

CUSIP: 68557N103 Class: COM

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

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

Q3 2017
Shares 901 Value ($000) $120 Avg Close — Range —
Q3 2016
Shares 111 Value ($000) $8 Avg Close — Range —
Q4 2015
Shares 1,377 Value ($000) $123 Avg Close — Range —
Q3 2015
Shares 61 Value ($000) $4 Avg Close — Range —
Q2 2015
Shares 361 Value ($000) $26 Avg Close — Range —