RBCN

Rubicon Technology, Inc.
RBCN

Overview Fund Activity
Delisted

RBCN was delisted on the 29th of December, 2022.

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102 hedge funds and large institutions have $89M invested in Rubicon Technology, Inc. in 2014 Q3 according to their latest regulatory filings, with 13 funds opening new positions, 37 increasing their positions, 34 reducing their positions, and 24 closing their positions.

Holders
102
Holders Change
-11
Holders Change %
-9.73%
% of All Funds
2.96%
Holding in Top 10
–
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-100%
% of All Funds
–
New
13
Increased
37
Reduced
34
Closed
24
Calls
$563K
Puts
$843K
Net Calls
-$280K
Net Calls Change
-$673K

Top Buyers

1
CWAM
1
Columbia Wanger Asset Management
Illinois
$10.6M
2
AI
2
Ariel Investments
Illinois
$9.38M
3
LAM
3
Lapides Asset Management
Connecticut
$1.94M
4
Renaissance Technologies
4
Renaissance Technologies
New York
$865K
5
Northern Trust
5
Northern Trust
Illinois
$1.93M

Top Sellers

1
Massachusetts Financial Services
1
Massachusetts Financial Services
Massachusetts
$2.76M
2
ICM
2
Invicta Capital Management
New York
$0
3
RS
3
Robeco Schweiz
Switzerland
$0
4
EA
4
Ecofin Advisors
United Kingdom
$1.83M
5
IMIM
5
Irving Magee Investment Management
Pennsylvania
$0
Name Market Value Shares Shares
Change 		Shares
Change %
CWAM
1
Columbia Wanger Asset Management
Illinois
$10.6M 2,500,000 +2,384,721 +2,069%
Fidelity Investments
2
Fidelity Investments
Massachusetts
$10.2M 2,404,017 +137,300 +6%
AI
3
Ariel Investments
Illinois
$9.38M 2,206,147 +856,940 +64%
RA
4
Royce & Associates
New York
$5.77M 1,358,614 -275,500 -17%
BFA
5
BlackRock Fund Advisors
California
$5.04M 1,185,104 -124,000 -9%
QAM
6
Quentec Asset Management
New York
$4M 940,625 -55,302 -6%
CAM
7
Cortina Asset Management
Wisconsin
$3.94M 927,670 -24,124 -3%
BIT
8
BlackRock Institutional Trust
California
$3.34M 784,856 +55,921 +8%
Vanguard Group
9
Vanguard Group
Pennsylvania
$2.96M 695,431 -101,916 -13%
Massachusetts Financial Services
10
Massachusetts Financial Services
Massachusetts
$2.76M 648,767 -2,656,505 -80%
TAM
11
Tocqueville Asset Management
New York
$2.62M 615,514 -9,111 -1%
Dimensional Fund Advisors
12
Dimensional Fund Advisors
Texas
$2.04M 479,144 -22,527 -4%
LAM
13
Lapides Asset Management
Connecticut
$1.94M 456,800 +230,000 +101%
Northern Trust
14
Northern Trust
Illinois
$1.93M 452,994 +180,063 +66%
EA
15
Ecofin Advisors
United Kingdom
$1.83M 431,090 -646,081 -60%
State Street
16
State Street
Massachusetts
$1.6M 376,498 -3,777 -1%
Invesco
17
Invesco
Georgia
$1.5M 352,078 -243,585 -41%
RGI
18
River Global Investors
United Kingdom
$1.21M 283,900 +110,000 +63%
New York State Common Retirement Fund
19
New York State Common Retirement Fund
New York
$1.1M 259,700 +59,300 +30%
AIA
20
AGF Investments America
Ontario, Canada
$1.04M 245,200 +24,000 +11%
DADC
21
D.A. Davidson & Co
Montana
$894K 210,490 +52,000 +33%
Renaissance Technologies
22
Renaissance Technologies
New York
$865K 203,500 +203,500 New
PRCP
23
Pacific Ridge Capital Partners
Oregon
$776K 182,540 +92,770 +103%
Bank of New York Mellon
24
Bank of New York Mellon
New York
$764K 179,808 -68 -0%
Principal Financial Group
25
Principal Financial Group
Iowa
$595K 140,066 -1,659 -1%
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