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Nephros
NEPH

Overview Fund Activity

20 hedge funds and large institutions have $19.8M invested in Nephros in 2025 Q2 according to their latest regulatory filings, with 3 funds opening new positions, 7 increasing their positions, 5 reducing their positions, and 1 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
20
Holders Change
+2
Holders Change %
+11.11%
% of All Funds
0.27%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
%
% of All Funds
0.01%
New
3
Increased
7
Reduced
5
Closed
1
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
Vanguard Group
Vanguard Group
Pennsylvania
+$488K
2
TCM
Topline Capital Management
California
+$226K
3
EIM
Essex Investment Management
Massachusetts
+$102K
4
Renaissance Technologies
Renaissance Technologies
New York
+$44.6K
5
WC
Wexford Capital
Florida
+$30.8K

Top Sellers

1
EP
Elkhorn Partners
Nebraska
-$99.9K
2
BA
Bard Associates
Illinois
-$49.5K
3
Morgan Stanley
Morgan Stanley
New York
-$14.3K
4
TRCT
Tower Research Capital (TRC)
New York
-$6.92K
5
Citadel Advisors
Citadel Advisors
Florida
-$548
Name Holding Trade Value Shares
Change 		Shares
Change %
WC
1
Wexford Capital
Florida
$14.8M +$30.8K +7,529 +0.2%
TCM
2
Topline Capital Management
California
$1.95M +$226K +55,360 +13%
Vanguard Group
3
Vanguard Group
Pennsylvania
$1.32M +$488K +119,285 +58%
BA
4
Bard Associates
Illinois
$536K -$49.5K -12,100 -8%
Geode Capital Management
5
Geode Capital Management
Massachusetts
$381K +$11.9K +2,898 +3%
HighTower Advisors
6
HighTower Advisors
Illinois
$229K +$679 +166 +0.3%
William Blair & Company
7
William Blair & Company
Illinois
$148K – – –
Susquehanna International Group
8
Susquehanna International Group
Pennsylvania
$120K +$23.8K +5,807 +25%
EIM
9
Essex Investment Management
Massachusetts
$102K +$102K +24,822 New
State Street
10
State Street
Massachusetts
$64.2K – – –
EP
11
Elkhorn Partners
Nebraska
$59.3K -$99.9K -24,424 -63%
MFIM
12
Mesirow Financial Investment Management
Illinois
$56.4K – – –
Citadel Advisors
13
Citadel Advisors
Florida
$48.6K -$548 -134 -1%
Renaissance Technologies
14
Renaissance Technologies
New York
$44.6K +$44.6K +10,900 New
UBS Group
15
UBS Group
Switzerland
$10.3K +$10.3K +2,523 New
Morgan Stanley
16
Morgan Stanley
New York
$7.83K -$14.3K -3,508 -65%
TRCT
17
Tower Research Capital (TRC)
New York
$4.52K -$6.92K -1,693 -61%
Bank of America
18
Bank of America
North Carolina
$499 +$176 +43 +54%
Jones Financial Companies
19
Jones Financial Companies
Missouri
$120 – – –
JPMorgan Chase & Co
20
JPMorgan Chase & Co
New York
– -$22 -13 Closed