RBCN

Rubicon Technology, Inc.
RBCN

Overview Fund Activity
Delisted

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

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76 hedge funds and large institutions have $91.3M invested in Rubicon Technology, Inc. in 2015 Q1 according to their latest regulatory filings, with 8 funds opening new positions, 25 increasing their positions, 24 reducing their positions, and 13 closing their positions.

Holders
76
Holders Change
-6
Holders Change %
-7.32%
% of All Funds
2.03%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
8
Increased
25
Reduced
24
Closed
13
Calls
$3K
Puts
$80K
Net Calls
-$77K
Net Calls Change
-$442K

Top Buyers

1
CWAM
1
Columbia Wanger Asset Management
Illinois
$13.4M
2
AI
2
Ariel Investments
Illinois
$18.2M
3
AF
3
Aegis Financial
Virginia
$3.46M
4
SGAM
4
Smith Group Asset Management
Texas
$1.26M
5
PP
5
PDT Partners
New York
$263K

Top Sellers

1
CAM
1
Cortina Asset Management
Wisconsin
$0
2
TAM
2
Tocqueville Asset Management
New York
$533K
3
LAM
3
Lapides Asset Management
Connecticut
$1.21M
4
CS
4
Credit Suisse
Switzerland
$60K
5
Citadel Advisors
5
Citadel Advisors
Florida
$0
Name Market Value Shares Shares
Change 		Shares
Change %
AI
1
Ariel Investments
Illinois
$18.2M 4,624,107 +814,734 +21%
CWAM
2
Columbia Wanger Asset Management
Illinois
$13.4M 3,400,000 +824,015 +32%
Fidelity Investments
3
Fidelity Investments
Massachusetts
$12.4M 3,139,517 – –
RA
4
Royce & Associates
New York
$6.14M 1,557,848 +40,500 +3%
EA
5
Ecofin Advisors
United Kingdom
$5.13M 1,302,741 +44,352 +4%
AF
6
Aegis Financial
Virginia
$3.46M 879,200 +433,200 +97%
Vanguard Group
7
Vanguard Group
Pennsylvania
$3.02M 765,332 +36,239 +5%
BIT
8
BlackRock Institutional Trust
California
$2.98M 755,426 +1,534 +0.2%
BFA
9
BlackRock Fund Advisors
California
$2.77M 704,030 -4,210 -0.6%
Massachusetts Financial Services
10
Massachusetts Financial Services
Massachusetts
$1.97M 499,906 +2,607 +0.5%
Dimensional Fund Advisors
11
Dimensional Fund Advisors
Texas
$1.83M 464,205 – –
New York State Common Retirement Fund
12
New York State Common Retirement Fund
New York
$1.76M 446,200 +65,782 +17%
Northern Trust
13
Northern Trust
Illinois
$1.72M 437,122 -6,213 -1%
State Street
14
State Street
Massachusetts
$1.72M 435,553 +2,009 +0.5%
PRCP
15
Pacific Ridge Capital Partners
Oregon
$1.3M 329,350 +10,540 +3%
SGAM
16
Smith Group Asset Management
Texas
$1.26M 319,940 +316,400 +8,938%
LAM
17
Lapides Asset Management
Connecticut
$1.21M 307,700 -208,100 -40%
RGI
18
River Global Investors
United Kingdom
$991K 251,900 – –
ERSOT
19
Employees Retirement System of Texas
Texas
$942K 239,000 – –
Invesco
20
Invesco
Georgia
$865K 219,423 +20,121 +10%
Bank of New York Mellon
21
Bank of New York Mellon
New York
$582K 147,937 +26,608 +22%
TAM
22
Tocqueville Asset Management
New York
$533K 135,313 -329,237 -71%
BCM
23
Bourgeon Capital Management
Connecticut
$522K 132,500 +25,000 +23%
Renaissance Technologies
24
Renaissance Technologies
New York
$501K 127,200 +10,115 +9%
UBS Group
25
UBS Group
Switzerland
$498K 126,481 -5,671 -4%
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