Cortina Asset Management’s Rubicon Technology, Inc. RBCN Stock Holding History

Cortina Asset Management’s Portfolio RBCN Stock Details RBCN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2015 Q1	–	Sell	-90,309	Closed	-$4.13M	–	282
2014 Q4	$4.13M	Sell	90,309 -2,458	-3%	-$108K	0.18%	162
2014 Q3	$3.94M	Sell	92,767 -2,412	-3%	-$165K	0.17%	165
2014 Q2	$8.33M	Sell	95,179 -2,317	-2%	-$210K	0.32%	131
2014 Q1	$11M	Buy	+97,496	New	+$11.6M	0.4%	110
2013 Q4	–	Sell	-58,547	Closed	-$7.09M	–	264
2013 Q3	$7.09M	Sell	58,547 -17,434	-23%	-$1.77M	0.28%	126
2013 Q2	$6.06M	Buy	+75,981	New	+$5.55M	0.24%	148

Other funds holding RBCN

Ariel Investments Chicago, Illinois $10B AUM 42.59% 1-Year Est. Return

CWAM

Columbia Wanger Asset Management Chicago, Illinois $6.69B AUM 31.14% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Royce & Associates New York $12.4B AUM 64.17% 1-Year Est. Return

Ecofin Advisors London, United Kingdom $239M AUM 45.14% 1-Year Est. Return

Aegis Financial Mc Lean, Virginia $633M AUM 87.77% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

BIT

BlackRock Institutional Trust San Francisco, California $675B AUM 16.07% 1-Year Est. Return

BFA

BlackRock Fund Advisors San Francisco, California $542B AUM 18.13% 1-Year Est. Return

Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return

Cortina Asset Management's RBCN Position: Q1 2015 in Review

Cortina Asset Management sold out of Rubicon Technology, Inc. (RBCN) in Q1 2015, closing a stake of 90,309 shares — an estimated $4.13M sold.

Cortina Asset Management first reported a position in RBCN in Q2 2013 and held it in 6 quarters. The position peaked at $11M in Q1 2014. 76 funds tracked by Wall St. Rank hold RBCN as of Q1 2015.

Cortina Asset Management reported no remaining Rubicon Technology, Inc. position as of Q1 2015 after selling out during the quarter.
Cortina Asset Management sold 90,309 Rubicon Technology, Inc. shares in Q1 2015, an estimated $4.13M.
Cortina Asset Management first reported a position in Rubicon Technology, Inc. in Q2 2013 and held it in 6 quarters.
Cortina Asset Management's Rubicon Technology, Inc. position peaked at $11M in Q1 2014.
76 funds tracked by Wall St. Rank held Rubicon Technology, Inc. as of Q1 2015.

Based on Cortina Asset Management's 13F filing for Q1 2015, filed 16 Apr 2015.