Nephros Ownership | Who Owns Nephros?
Nephros Ownership Summary
Nephros is owned by 47.31% institutional investors, 11.31% insiders, and 41.38% retail investors. Wexford capital lp is the largest institutional shareholder, holding 34.12% of NEPH shares. Vanguard Institutional Extnd Mkt Idx Tr is the top mutual fund, with 1.24% of its assets in Nephros shares.
NEPH Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Nephros | 47.31% | 11.31% | 41.38% |
| Sector | Healthcare Stocks | 42.54% | 10.83% | 46.63% |
| Industry | Medical Instruments & Supplies Stocks | 40.77% | 13.85% | 45.38% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Wexford capital lp | 3.62M | 34.12% | $17.11M |
| Topline capital management | 596.30K | 5.63% | $2.82M |
| Vanguard group | 281.31K | 2.65% | $1.33M |
| Bard associates | 127.12K | 1.20% | $601.28K |
| Renaissance | 82.50K | 0.78% | $390.23K |
| Geode capital management | 75.89K | 0.72% | $359.06K |
| Hightower advisors | 55.71K | 0.53% | $263.51K |
| Blair william & co/il | 36.25K | 0.34% | $171.46K |
| Essex investment management | 24.82K | 0.23% | $117.41K |
| Susquehanna group, llp | 23.80K | 0.23% | $34.75K |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Wexford capital lp | 3.62M | 2.46% | $17.11M |
| Topline capital management | 596.30K | 0.48% | $2.82M |
| Bard associates | 127.12K | 0.16% | $601.28K |
| Elkhorn partners limited partnership | 12.50K | 0.04% | $59.13K |
| Essex investment management | 24.82K | 0.02% | $117.41K |
| Xtx topco | 14.55K | 0.00% | $68.84K |
| Mesirow financial investment management | 13.80K | 0.00% | $65.27K |
| Renaissance | 82.50K | 0.00% | $390.23K |
| Blair william & co/il | 36.25K | 0.00% | $171.46K |
| Hightower advisors | 55.71K | 0.00% | $263.51K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Topline capital management | 596.30K | 0.48% | 118.85K |
| Renaissance | 82.50K | 0.00% | 71.60K |
| Susquehanna group, llp | 23.80K | - | 23.80K |
| Goldman sachs group | 18.64K | - | 18.64K |
| Xtx topco | 14.55K | 0.00% | 14.55K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Vanguard group | 281.31K | - | -42.14K |
| Geode capital management | 75.89K | - | -17.30K |
| Granite investment partners | - | - | -13.97K |
| Two sigma securities | - | - | -11.62K |
| Bard associates | 127.12K | 0.16% | -4.00K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Susquehanna group, llp | 23.80K | - | 23.80K | $34.75K |
| Goldman sachs group | 18.64K | - | 18.64K | $88.18K |
| Xtx topco | 14.55K | 0.00% | 14.55K | $68.84K |
| Dimensional fund advisors lp | 13.60K | - | 13.60K | $64.33K |
| Citadel advisors | 11.85K | - | 11.85K | $25.00K |
Sold Out
| Holder | Change |
|---|---|
| Jpmorgan chase | -13.00 |
| Newedge advisors | -36.00 |
| Wells fargo & company/mn | -73.00 |
| Tower research capital llc (trc) | -1.10K |
| Two sigma securities | -11.62K |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 30, 2025 | 23 | 15.00% | 5,015,032 | 3.35% | 47 | 2.26% | 8 | -27.27% | 8 | 60.00% |
| Jun 30, 2025 | 19 | 11.76% | 4,852,137 | 4.02% | 45 | 2.36% | 10 | 66.67% | 5 | - |
| Mar 31, 2025 | 17 | - | 4,665,065 | -0.99% | 44 | 2.20% | 6 | 50.00% | 5 | -28.57% |
| Dec 31, 2024 | 17 | - | 4,711,852 | 9.97% | 44 | 2.71% | 4 | -20.00% | 7 | 16.67% |
| Sep 30, 2024 | 17 | -5.56% | 4,284,771 | -0.82% | 40 | 2.40% | 5 | -37.50% | 6 | 20.00% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Institutional Extnd Mkt Idx Tr | 131.33K | 1.24% | -60.29K |
| Vanguard US Total Market Shares ETF | 129.66K | 1.22% | - |
| Vanguard Total Stock Mkt Idx Inv | 129.00K | 1.22% | -2.82K |
| Fidelity Extended Market Index | 56.98K | 0.54% | -469.00 |
| Fidelity Series Total Market Index | 13.24K | 0.12% | - |
| Fidelity Total Market Index | 11.64K | 0.11% | 3.50K |
| Spartan Extended Market Index Pool F | 10.05K | 0.09% | 469.00 |
| Northern Trust Extended Eq Market Idx | 7.07K | 0.07% | - |
| NT Ext Equity Mkt Idx Fd - L | 7.07K | 0.07% | - |
| Spartan Extended Market Index Pool E | 6.19K | 0.06% | 461.00 |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| May 28, 2024 | Amron Arthur H | - | Buy | $4.44K |
| May 30, 2024 | Amron Arthur H | - | Buy | $6.73K |
| May 16, 2024 | Banks Robert R. Jr. | President and CEO | Buy | $112.05K |
| Mar 12, 2024 | Amron Arthur H | - | Buy | $17.13K |
| Dec 07, 2023 | Banks Robert R. Jr. | President and CEO | Buy | $39.65K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q3 | - | - |
| 2025 Q2 | - | - |
| 2025 Q1 | - | - |
| 2024 Q2 | 3 | - |
| 2024 Q1 | 1 | - |
NEPH Ownership FAQ
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