RUBICON TECHNOLOGY INC

CUSIP: 78112T107 Class: COM

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q1 2015
Shares 48,303 Value ($000) $190 Avg Close — Range —
Q4 2014
Shares 48,303 Value ($000) $221 Avg Close — Range —
Q3 2014
Shares 48,097 Value ($000) $204 Avg Close — Range —
Q2 2014
Shares 47,723 Value ($000) $418 Avg Close — Range —
Q1 2014
Shares 38,423 Value ($000) $434 Avg Close — Range —
Q4 2013
Shares 31,823 Value ($000) $317 Avg Close — Range —
Q3 2013
Shares 31,823 Value ($000) $385 Avg Close — Range —
Q2 2013
Shares 30,830 Value ($000) $247 Avg Close — Range —
Q1 2013
Shares 29,492 Value ($000) $195 Avg Close — Range —