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.

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

Top Sellers

1
CAM
Cortina Asset Management
Wisconsin
$0
2
TAM
Tocqueville Asset Management
New York
$533K
3
LAM
Lapides Asset Management
Connecticut
$1.21M
4
CS
Credit Suisse
Switzerland
$60K
5
Citadel Advisors
Citadel Advisors
Florida
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
GMCM
76
Gruber & McBaine Capital Management
California
– -$229K -5,000 Closed
First Trust Advisors
77
First Trust Advisors
Illinois
– -$169K -3,703 Closed
CCM
78
Coldstream Capital Management
Washington
– -$152K -3,320 Closed
ST
79
Spot Trading
Illinois
– -$94K -2,060 Closed
Two Sigma Investments
80
Two Sigma Investments
New York
– -$71K -1,555 Closed
VKH
81
Virtu KCG Holdings
New York
– -$60K -1,321 Closed
Millennium Management
82
Millennium Management
New York
– -$55K -1,214 Closed
Simplex Trading
83
Simplex Trading
Illinois
– -$11K -240 Closed
BRWA
84
B. Riley Wealth Advisors
Florida
– -$5 -120 Closed
HNB
85
Huntington National Bank
Ohio
– -$4K -95 Closed
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