27 tracked 13F filers disclose a position in NEPH as of the latest SEC 13F filings, a combined $16.2M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | WEXFORD CAPITAL LP | $10.7M | 3.6M | ▼−0.5% Reduced · −16K sh | Q1 2026 | |
| 2 | Topline Capital Management, LLC | $1.7M | 582K | ▼−5.3% Reduced · −32K sh | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $592K | 199K | →First observed position No prior filed position | Q1 2026 | |
| 4 | Cornerstone Capital, Inc. | $459K | 129K | —Held | Q2 2026 | |
| 5 | BARD ASSOCIATES INC | $421K | 118K | ▼−2.6% Reduced · −3K sh | Q2 2026 | |
| 6 | MORGAN STANLEY | $331K | 111K | ▲+518% Added · +93K sh | Q1 2026 | |
| 7 | RENAISSANCE TECHNOLOGIES LLC | $296K | 99K | ▼−4.2% Reduced · −4K sh | Q1 2026 | |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | $251K | 70K | ▼−3.6% Reduced · −3K sh | Q2 2026 | |
| 9 | Mesirow Financial Investment Management, Inc. | $214K | 60K | ▼−50% Reduced · −60K sh | Q2 2026 | |
| 10 | HighTower Advisors, LLC | $178K | 60K | —Held | Q1 2026 | |
| 11 | NAVELLIER & ASSOCIATES INC | $191K | 53K | ▲+180% Added · +34K sh | Q2 2026 | |
| 12 | ESSEX INVESTMENT MANAGEMENT CO LLC | $139K | 39K | ▼−0.1% Reduced · −57 sh | Q2 2026 | |
| 13 | VANGUARD FIDUCIARY TRUST CO | $110K | 37K | →First observed position No prior filed position | Q1 2026 | |
| 14 | BLAIR WILLIAM & CO/IL | $129K | 36K | —Held | Q2 2026 | |
| 15 | CITADEL ADVISORS LLC | $62K | 21K | ▲+0.8% Added · +178 sh | Q1 2026 | |
| 16 | DIMENSIONAL FUND ADVISORS LP | $62K | 21K | ▲+53% Added · +7K sh | Q1 2026 | |
| 17 | De Lisle Partners LLP | $62K | 17K | ▼−30% Reduced · −8K sh | Q2 2026 | |
| 18 | STATE STREET CORP | $56K | 16K | —Held | Q2 2026 | |
| 19 | GOLDMAN SACHS GROUP INC | $42K | 14K | ▼−25% Reduced · −5K sh | Q1 2026 | |
| 20 | PRELUDE CAPITAL MANAGEMENT, LLC | $41K | 14K | ▼−9.9% Reduced · −2K sh | Q1 2026 | |
| 21 | Cannell & Spears LLC | $39K | 11K | —Held | Q2 2026 | |
| 22 | NORTHERN TRUST CORP | $32K | 11K | —Held | Q1 2026 | |
| 23 | ROYAL BANK OF CANADA | $2K | 747 | ▲+1.2% Added · +9 sh | Q1 2026 | |
| 24 | OSAIC HOLDINGS, INC. | $521 | 175 | ▼−89% Reduced · −1K sh | Q1 2026 | |
| 25 | SBI Securities Co., Ltd. | $536 | 150 | ▲New +150 sh | Q2 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 1 fund opened a new position in NEPH and 2 added to an existing one, while 8 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 13 funds | $1.5B |
| ALPHABET INC-CL AGOOGL | 13 funds | $1.4B |
| NVIDIA CORPNVDA | 12 funds | $4.5B |
| APPLE INCAAPL | 12 funds | $2.9B |
| AMAZON.COM INCAMZN | 12 funds | $2.1B |
| BROADCOM INCAVGO | 11 funds | $1.4B |
| ALPHABET INC-CL CGOOG | 11 funds | $1.3B |
| META PLATFORMS INC-CLASS AMETA | 11 funds | $1.3B |
| COCA-COLA CO/THEKO | 11 funds | $563.1M |
| VISA INC-CLASS A SHARESV | 11 funds | $520.3M |
| VERIZON COMMUNICATIONS INCVZ | 11 funds | $282.2M |
| UNION PACIFIC CORPUNP | 11 funds | $232.2M |
Ranked by how many of NEPH's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| May 30, 2024 | Amron Arthur H | Director | Buy (P) | 3K | $7K |
| May 28, 2024 | Amron Arthur H | Director | Buy (P) | 2K | $4K |
| May 16, 2024 | Banks Robert R. Jr. | President and CEO, Director | Buy (P) | 50K | $112K |
| Mar 12, 2024 | Amron Arthur H | Director | Buy (P) | 7K | $17K |
| Dec 7, 2023 | Banks Robert R. Jr. | President and CEO, Director | Buy (P) | 18K | $40K |
| Aug 15, 2023 | Banks Robert R. Jr. | President and CEO, Director | Buy (P) | 2K | $3K |
| Aug 14, 2023 | Banks Robert R. Jr. | President and CEO, Director | Buy (P) | 99 | $149 |
| Aug 20, 2021 | Lobo Wesley S. | Chief Marketing Officer | Buy (P) | 1K | $8K |
| Aug 18, 2021 | Astor Andrew | President & CEO, Director | Buy (P) | 3K | $19K |
| Aug 18, 2021 | Gwydir Tom | Director | Buy (P) | 5K | $38K |
| Aug 17, 2021 | Astor Andrew | President & CEO, Director | Buy (P) | 3K | $19K |
| Nov 19, 2020 | Astor Andrew | President & CEO, Director | Buy (P) | 1K | $6K |
Connected entities for NEPH
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/NEPH/capital-change-brief"
Use Arkolith's capital_change_brief for NEPH. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for NEPH. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.