JANUS CAP GROUP INC

CUSIP: 47102X105 Class: COMMON STOCK

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

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

Q1 2017
Shares 1,700 Value ($000) $22 Avg Close — Range —
Q4 2016
Shares 7,770 Value ($000) $103 Avg Close — Range —
Q3 2016
Shares 8,820 Value ($000) $124 Avg Close — Range —
Q2 2016
Shares 6,346 Value ($000) $88 Avg Close — Range —
Q1 2016
Shares 6,346 Value ($000) $93 Avg Close — Range —
Q2 2015
Shares 4,152 Value ($000) $71 Avg Close — Range —
Q2 2013
Shares 13,259 Value ($000) $113 Avg Close — Range —