RUBICON TECHNOLOGY INC

CUSIP: 78112T107 Class: COM

PDT Partners, LLC's Holding History (CIK: 0001564702)

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

Q2 2015
Shares 66,626 Value ($000) $162 Avg Close — Range —
Q1 2015
Shares 66,626 Value ($000) $263 Avg Close — Range —
Q1 2014
Shares 45,581 Value ($000) $515 Avg Close — Range —