RUBICON TECHNOLOGY INC

CUSIP: 78112T107 Class: COM

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

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

Q1 2017
Shares 18 Value ($000) $0 Avg Close Range
Q4 2016
Shares 18 Value ($000) $0 Avg Close Range
Q3 2016
Shares 18 Value ($000) $0 Avg Close Range
Q2 2016
Shares 18 Value ($000) $0 Avg Close Range
Q1 2016
Shares 18 Value ($000) $0 Avg Close Range
Q4 2015
Shares 18 Value ($000) $0 Avg Close Range
Q3 2015
Shares 18 Value ($000) $0 Avg Close Range
Q2 2015
Shares 6,419 Value ($000) $16 Avg Close Range
Q1 2015
Shares 6,689 Value ($000) $26 Avg Close Range
Q4 2014
Shares 10,431 Value ($000) $48 Avg Close Range
Q3 2014
Shares 7,988 Value ($000) $34 Avg Close Range
Q2 2014
Shares 1,401 Value ($000) $12 Avg Close Range
Q1 2014
Shares 842 Value ($000) $10 Avg Close Range
Q4 2013
Shares 4,430 Value ($000) $44 Avg Close Range