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Nephros
NEPH

Overview Fund Activity

19 hedge funds and large institutions have $19.7M invested in Nephros in 2025 Q2 according to their latest regulatory filings, with 3 funds opening new positions, 6 increasing their positions, 5 reducing their positions, and 1 closing their positions.

Holders
19
Holders Change
+1
Holders Change %
+5.56%
% of All Funds
0.26%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
%
% of All Funds
0.01%
New
3
Increased
6
Reduced
5
Closed
1
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
Vanguard Group
1
Vanguard Group
Pennsylvania
$1.32M
2
TCM
2
Topline Capital Management
California
$1.95M
3
EIM
3
Essex Investment Management
Massachusetts
$102K
4
Renaissance Technologies
4
Renaissance Technologies
New York
$44.6K
5
WC
5
Wexford Capital
Florida
$14.8M

Top Sellers

1
EP
1
Elkhorn Partners
Nebraska
$59.3K
2
BA
2
Bard Associates
Illinois
$536K
3
Morgan Stanley
3
Morgan Stanley
New York
$7.83K
4
TRCT
4
Tower Research Capital (TRC)
New York
$4.52K
5
Citadel Advisors
5
Citadel Advisors
Florida
$48.6K
Name Market Value Shares Shares
Change 		Shares
Change %
WC
1
Wexford Capital
Florida
$14.8M 3,608,081 +7,529 +0.2%
TCM
2
Topline Capital Management
California
$1.95M 477,449 +55,360 +13%
Vanguard Group
3
Vanguard Group
Pennsylvania
$1.32M 323,443 +119,285 +58%
BA
4
Bard Associates
Illinois
$536K 131,121 -12,100 -8%
Geode Capital Management
5
Geode Capital Management
Massachusetts
$381K 93,187 +2,898 +3%
HighTower Advisors
6
HighTower Advisors
Illinois
$229K 55,876 +166 +0.3%
William Blair & Company
7
William Blair & Company
Illinois
$148K 36,249 – –
EIM
8
Essex Investment Management
Massachusetts
$102K 24,822 +24,822 New
State Street
9
State Street
Massachusetts
$64.2K 15,698 – –
EP
10
Elkhorn Partners
Nebraska
$59.3K 14,500 -24,424 -63%
MFIM
11
Mesirow Financial Investment Management
Illinois
$56.4K 13,800 – –
Citadel Advisors
12
Citadel Advisors
Florida
$48.6K 11,890 -134 -1%
Renaissance Technologies
13
Renaissance Technologies
New York
$44.6K 10,900 +10,900 New
UBS Group
14
UBS Group
Switzerland
$10.3K 2,523 +2,523 New
Morgan Stanley
15
Morgan Stanley
New York
$7.83K 1,915 -3,508 -65%
TRCT
16
Tower Research Capital (TRC)
New York
$4.52K 1,105 -1,693 -61%
Bank of America
17
Bank of America
North Carolina
$499 122 +43 +54%
Jones Financial Companies
18
Jones Financial Companies
Missouri
$120 31 – –
JPMorgan Chase & Co
19
JPMorgan Chase & Co
New York
– – -13 Closed
Royal Bank of Canada
20
Royal Bank of Canada
Ontario, Canada
$0 2 – –