ESSEX INVESTMENT MANAGEMENT CO LLC - RUBICON TECHNOLOGY INC ownership

RUBICON TECHNOLOGY INC's ticker is RBCN and the CUSIP is 78112T107. A total of 106 filers reported holding RUBICON TECHNOLOGY INC in Q3 2013. The put-call ratio across all filers is 0.32 and the average weighting 0.1%.

Quarter-by-quarter ownership
ESSEX INVESTMENT MANAGEMENT CO LLC ownership history of RUBICON TECHNOLOGY INC
ValueSharesWeighting
Q2 2014$187,000
-96.9%
21,330
-95.7%
0.03%
-96.9%
Q3 2013$5,940,000
+195.8%
490,518
+94.7%
0.90%
+154.2%
Q2 2013$2,008,000251,9970.35%
Other shareholders
RUBICON TECHNOLOGY INC shareholders Q3 2013
NameSharesValueWeighting ↓
AEGIS FINANCIAL CORP 879,200$2,136,0001.16%
RIVER GLOBAL INVESTORS LLP 251,900$607,0000.77%
Ecofin Advisors Ltd 1,396,334$3,393,0000.55%
Pacific Ridge Capital Partners, LLC 325,750$792,0000.33%
ZEKE CAPITAL ADVISORS, LLC 83,000$202,0000.16%
Ariel Investments 4,979,260$12,100,0000.14%
Lapides Asset Management, LLC 280,000$680,0000.11%
COLUMBIA WANGER ASSET MANAGEMENT LLC 3,170,799$7,705,0000.05%
SMITH ASSET MANAGEMENT GROUP LP 340,000$826,0000.03%
Ancora Advisors LLC 91,500$222,0000.03%
View complete list of RUBICON TECHNOLOGY INC shareholders