RBCN

Rubicon Technology, Inc.
RBCN

Overview Fund Activity
Delisted

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

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127 hedge funds and large institutions have $267M invested in Rubicon Technology, Inc. in 2014 Q1 according to their latest regulatory filings, with 47 funds opening new positions, 38 increasing their positions, 30 reducing their positions, and 10 closing their positions.

Holders
127
Holders Change
+36
Holders Change %
+39.56%
% of All Funds
3.67%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
%
% of All Funds
0.03%
New
47
Increased
38
Reduced
30
Closed
10
Calls
$6.21M
Puts
$389K
Net Calls
+$5.82M
Net Calls Change
+$5.04M

Top Buyers

1
WMSA
1
Weiss Multi-Strategy Advisers
New York
$13.9M
2
CAM
2
Cortina Asset Management
Wisconsin
$11M
3
SCA
3
SAC Capital Advisors
Connecticut
$9.42M
4
Fidelity Investments
4
Fidelity Investments
Massachusetts
$23.1M
5
ICM
5
Invicta Capital Management
New York
$3.39M

Top Sellers

1
AI
1
Ariel Investments
Illinois
$8.6M
2
PC
2
Passport Capital
California
$0
3
New York State Common Retirement Fund
3
New York State Common Retirement Fund
New York
$1.41M
4
California Public Employees Retirement System
4
California Public Employees Retirement System
California
$200K
5
Dimensional Fund Advisors
5
Dimensional Fund Advisors
Texas
$5.7M
Name Market Value Shares Shares
Change 		Shares
Change %
Massachusetts Financial Services
1
Massachusetts Financial Services
Massachusetts
$33.1M 2,932,683 +190 +0%
Fidelity Investments
2
Fidelity Investments
Massachusetts
$23.1M 2,048,517 +520,900 +34%
RA
3
Royce & Associates
New York
$20.9M 1,853,442 -26,200 -1%
BFA
4
BlackRock Fund Advisors
California
$14.3M 1,264,596 +247,046 +24%
WMSA
5
Weiss Multi-Strategy Advisers
New York
$13.9M 1,232,025 +1,232,025 New
WRF
6
Waddell & Reed Financial
Kansas
$13.5M 1,191,500 – –
CAM
7
Cortina Asset Management
Wisconsin
$11M 974,958 +974,958 New
QAM
8
Quentec Asset Management
New York
$9.74M 862,283 +74,300 +9%
SCA
9
SAC Capital Advisors
Connecticut
$9.42M 833,900 +833,900 New
Vanguard Group
10
Vanguard Group
Pennsylvania
$8.86M 784,862 +183,613 +31%
AI
11
Ariel Investments
Illinois
$8.6M 761,517 -1,180,918 -61%
BIT
12
BlackRock Institutional Trust
California
$7.16M 634,489 +87,909 +16%
Invesco
13
Invesco
Georgia
$5.81M 514,906 -72,141 -12%
Dimensional Fund Advisors
14
Dimensional Fund Advisors
Texas
$5.7M 504,479 -114,583 -19%
TAM
15
Tocqueville Asset Management
New York
$5.6M 496,303 +3,327 +0.7%
Northern Trust
16
Northern Trust
Illinois
$4.96M 439,115 +175,361 +66%
State Street
17
State Street
Massachusetts
$4.56M 403,783 +102,431 +34%
ICM
18
Invicta Capital Management
New York
$3.39M 300,000 +300,000 New
IMIM
19
Irving Magee Investment Management
Pennsylvania
$3.31M 293,080 – –
ZDA
20
Zweig-DiMenna Associates
New York
$3.27M 290,000 +290,000 New
LAM
21
Lapides Asset Management
Connecticut
$2.56M 226,800 -33,500 -13%
Adage Capital Partners
22
Adage Capital Partners
Massachusetts
$2.54M 225,000 +225,000 New
AIA
23
AGF Investments America
Ontario, Canada
$2.5M 221,200 +221,200 New
RS
24
Robeco Schweiz
Switzerland
$2.3M 201,000 +201,000 New
CS
25
Credit Suisse
Switzerland
$1.89M 167,181 +143,783 +615%
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