RBCN

Rubicon Technology, Inc.
RBCN

Overview Fund Activity
Delisted

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

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91 hedge funds and large institutions have $183M invested in Rubicon Technology, Inc. in 2013 Q4 according to their latest regulatory filings, with 12 funds opening new positions, 29 increasing their positions, 31 reducing their positions, and 25 closing their positions.

Holders
91
Holders Change
-14
Holders Change %
-13.33%
% of All Funds
2.64%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
12
Increased
29
Reduced
31
Closed
25
Calls
$1.27M
Puts
$495K
Net Calls
+$777K
Net Calls Change
-$366K

Top Buyers

1
AI
1
Ariel Investments
Illinois
$19.3M
2
Massachusetts Financial Services
2
Massachusetts Financial Services
Massachusetts
$29.2M
3
QAM
3
Quentec Asset Management
New York
$7.84M
4
RA
4
Royce & Associates
New York
$18.7M
5
New York State Common Retirement Fund
5
New York State Common Retirement Fund
New York
$2.57M

Top Sellers

1
CAM
1
Cortina Asset Management
Wisconsin
$0
2
ICM
2
Invicta Capital Management
New York
$0
3
EIM
3
Essex Investment Management
Massachusetts
$0
4
RIM
4
RS Investment Management
California
$0
5
Fidelity Investments
5
Fidelity Investments
Massachusetts
$15.2M
Name Market Value Shares Shares
Change 		Shares
Change %
Massachusetts Financial Services
1
Massachusetts Financial Services
Massachusetts
$29.2M 2,932,493 +871,220 +42%
AI
2
Ariel Investments
Illinois
$19.3M 1,942,435 +1,534,999 +377%
RA
3
Royce & Associates
New York
$18.7M 1,879,642 +230,920 +14%
Fidelity Investments
4
Fidelity Investments
Massachusetts
$15.2M 1,527,617 -300,836 -16%
WRF
5
Waddell & Reed Financial
Kansas
$11.9M 1,191,500 – –
BFA
6
BlackRock Fund Advisors
California
$10.1M 1,017,550 +29,932 +3%
QAM
7
Quentec Asset Management
New York
$7.84M 787,983 +293,983 +60%
Dimensional Fund Advisors
8
Dimensional Fund Advisors
Texas
$6.16M 619,062 +7,002 +1%
Vanguard Group
9
Vanguard Group
Pennsylvania
$5.98M 601,249 +14,061 +2%
Invesco
10
Invesco
Georgia
$5.84M 587,047 +139,551 +31%
BIT
11
BlackRock Institutional Trust
California
$5.44M 546,580 -13,794 -2%
TAM
12
Tocqueville Asset Management
New York
$4.91M 492,976 -10,078 -2%
State Street
13
State Street
Massachusetts
$3M 301,352 -8,332 -3%
IMIM
14
Irving Magee Investment Management
Pennsylvania
$2.92M 293,080 – –
Northern Trust
15
Northern Trust
Illinois
$2.62M 263,754 +4,578 +2%
LAM
16
Lapides Asset Management
Connecticut
$2.59M 260,300 – –
New York State Common Retirement Fund
17
New York State Common Retirement Fund
New York
$2.57M 258,300 +222,600 +624%
PC
18
Passport Capital
California
$2.2M 220,822 +220,822 New
Royal Bank of Canada
19
Royal Bank of Canada
Ontario, Canada
$1.61M 161,525 -11,750 -7%
NTCOC
20
Northern Trust Company of Connecticut
Connecticut
$1.55M 156,082 – –
Bank of New York Mellon
21
Bank of New York Mellon
New York
$1.35M 135,875 -50,853 -27%
California Public Employees Retirement System
22
California Public Employees Retirement System
California
$1.33M 137,800 -620 -0.4%
Susquehanna International Group
23
Susquehanna International Group
Pennsylvania
$1.13M 113,801 +23,589 +26%
U
24
UBS
Switzerland
$1.11M 111,890 -10,007 -8%
VDBMI
25
Van Den Berg Management I
Texas
$1.1M 110,840 +44,370 +67%
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