RBCN

Rubicon Technology, Inc.
RBCN

Overview Fund Activity
Delisted

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

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67 hedge funds and large institutions have $52.3M invested in Rubicon Technology, Inc. in 2015 Q2 according to their latest regulatory filings, with 12 funds opening new positions, 16 increasing their positions, 26 reducing their positions, and 21 closing their positions.

Holders
67
Holders Change
-9
Holders Change %
-11.84%
% of All Funds
1.81%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
12
Increased
16
Reduced
26
Closed
21
Calls
–
Puts
$6K
Net Calls
-$6K
Net Calls Change
+$71K

Top Buyers

1
AI
1
Ariel Investments
Illinois
$12.1M
2
Renaissance Technologies
2
Renaissance Technologies
New York
$618K
3
EA
3
Ecofin Advisors
United Kingdom
$3.39M
4
AA
4
Ancora Advisors
Ohio
$222K
5
Invesco
5
Invesco
Georgia
$751K

Top Sellers

1
BFA
1
BlackRock Fund Advisors
California
$168K
2
State Street
2
State Street
Massachusetts
$56K
3
Massachusetts Financial Services
3
Massachusetts Financial Services
Massachusetts
$646K
4
BIT
4
BlackRock Institutional Trust
California
$1.27M
5
CWAM
5
Columbia Wanger Asset Management
Illinois
$7.71M
Name Market Value Shares Shares
Change 		Shares
Change %
AI
1
Ariel Investments
Illinois
$12.1M 4,979,260 +355,153 +8%
CWAM
2
Columbia Wanger Asset Management
Illinois
$7.71M 3,170,799 -229,201 -7%
Fidelity Investments
3
Fidelity Investments
Massachusetts
$7.63M 3,139,517 – –
RA
4
Royce & Associates
New York
$3.93M 1,615,348 +57,500 +4%
EA
5
Ecofin Advisors
United Kingdom
$3.39M 1,396,334 +93,593 +7%
AF
6
Aegis Financial
Virginia
$2.14M 879,200 – –
Vanguard Group
7
Vanguard Group
Pennsylvania
$1.85M 761,892 -3,440 -0.4%
BIT
8
BlackRock Institutional Trust
California
$1.27M 523,690 -231,736 -31%
New York State Common Retirement Fund
9
New York State Common Retirement Fund
New York
$1.21M 496,691 +50,491 +11%
Dimensional Fund Advisors
10
Dimensional Fund Advisors
Texas
$1.1M 453,222 -10,983 -2%
Northern Trust
11
Northern Trust
Illinois
$985K 405,287 -31,835 -7%
SGAM
12
Smith Group Asset Management
Texas
$826K 340,000 +20,060 +6%
PRCP
13
Pacific Ridge Capital Partners
Oregon
$792K 325,750 -3,600 -1%
Invesco
14
Invesco
Georgia
$751K 309,019 +89,596 +41%
LAM
15
Lapides Asset Management
Connecticut
$680K 280,000 -27,700 -9%
Massachusetts Financial Services
16
Massachusetts Financial Services
Massachusetts
$646K 265,928 -233,978 -47%
Renaissance Technologies
17
Renaissance Technologies
New York
$618K 254,400 +127,200 +100%
RGI
18
River Global Investors
United Kingdom
$607K 251,900 – –
ERSOT
19
Employees Retirement System of Texas
Texas
$382K 157,100 -81,900 -34%
Goldman Sachs
20
Goldman Sachs
New York
$342K 140,604 +76,243 +118%
Geode Capital Management
21
Geode Capital Management
Massachusetts
$287K 118,482 -6,750 -5%
UBS Group
22
UBS Group
Switzerland
$254K 104,590 -21,891 -17%
AA
23
Ancora Advisors
Ohio
$222K 91,500 +91,500 New
ZCA
24
Zeke Capital Advisors
Pennsylvania
$202K 83,000 – –
CS
25
Credit Suisse
Switzerland
$196K 80,505 +65,250 +428%
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