RBCN

Rubicon Technology, Inc.
RBCN

Overview Fund Activity
Delisted

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

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56 hedge funds and large institutions have $20M invested in Rubicon Technology, Inc. in 2015 Q3 according to their latest regulatory filings, with 4 funds opening new positions, 16 increasing their positions, 19 reducing their positions, and 14 closing their positions.

Holders
56
Holders Change
-11
Holders Change %
-16.42%
% of All Funds
1.57%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
4
Increased
16
Reduced
19
Closed
14
Calls
–
Puts
$2K
Net Calls
-$2K
Net Calls Change
+$4K

Top Buyers

1
AI
1
Ariel Investments
Illinois
$5.29M
2
EA
2
Ecofin Advisors
United Kingdom
$1.6M
3
AA
3
Ancora Advisors
Ohio
$166K
4
Ameriprise
4
Ameriprise
Minnesota
$59K
5
Millennium Management
5
Millennium Management
New York
$102K

Top Sellers

1
Massachusetts Financial Services
1
Massachusetts Financial Services
Massachusetts
$0
2
RA
2
Royce & Associates
New York
$1.17M
3
SGAM
3
Smith Group Asset Management
Texas
$36K
4
CWAM
4
Columbia Wanger Asset Management
Illinois
$2.97M
5
Invesco
5
Invesco
Georgia
$54K
Name Market Value Shares Shares
Change 		Shares
Change %
AI
1
Ariel Investments
Illinois
$5.29M 5,138,765 +159,505 +3%
Fidelity Investments
2
Fidelity Investments
Massachusetts
$3.23M 3,139,517 – –
CWAM
3
Columbia Wanger Asset Management
Illinois
$2.97M 2,881,960 -288,839 -9%
EA
4
Ecofin Advisors
United Kingdom
$1.6M 1,551,685 +155,351 +11%
RA
5
Royce & Associates
New York
$1.17M 1,135,049 -480,299 -30%
AF
6
Aegis Financial
Virginia
$906K 879,200 – –
Vanguard Group
7
Vanguard Group
Pennsylvania
$791K 768,176 +6,284 +0.8%
BIT
8
BlackRock Institutional Trust
California
$539K 523,690 – –
New York State Common Retirement Fund
9
New York State Common Retirement Fund
New York
$521K 505,790 +9,099 +2%
Dimensional Fund Advisors
10
Dimensional Fund Advisors
Texas
$449K 436,351 -16,871 -4%
PRCP
11
Pacific Ridge Capital Partners
Oregon
$336K 326,290 +540 +0.2%
Renaissance Technologies
12
Renaissance Technologies
New York
$295K 286,400 +32,000 +13%
Northern Trust
13
Northern Trust
Illinois
$220K 213,384 -191,903 -47%
LAM
14
Lapides Asset Management
Connecticut
$166K 160,800 -119,200 -43%
AA
15
Ancora Advisors
Ohio
$166K 160,700 +69,200 +76%
ERSOT
16
Employees Retirement System of Texas
Texas
$162K 157,100 – –
Geode Capital Management
17
Geode Capital Management
Massachusetts
$122K 118,608 +126 +0.1%
Goldman Sachs
18
Goldman Sachs
New York
$114K 110,362 -30,242 -22%
Millennium Management
19
Millennium Management
New York
$102K 98,680 +48,760 +98%
ZCA
20
Zeke Capital Advisors
Pennsylvania
$85K 83,000 – –
UBS Group
21
UBS Group
Switzerland
$70K 68,164 -36,426 -35%
BFA
22
BlackRock Fund Advisors
California
$69K 67,262 -1,776 -3%
T. Rowe Price Associates
23
T. Rowe Price Associates
Maryland
$69K 66,600 +5,000 +8%
California Public Employees Retirement System
24
California Public Employees Retirement System
California
$63K 61,300 – –
Ameriprise
25
Ameriprise
Minnesota
$59K 57,460 +57,460 New
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