130 tracked 13F filers disclose a position in ZBIO as of the latest SEC 13F filings, a combined $1.1B 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 | FMR LLC | $177.6M | 9.1M | ▲+18% Added · +1.4M sh | Q1 2026 | |
| 2 | SR ONE CAPITAL MANAGEMENT, LP | $127.9M | 5.0M | —Held | Q2 2026 | |
| 3 | NEA Management Company, LLC | $78.7M | 4.0M | ▲+14% Added · +500K sh | Q1 2026 | |
| 4 | Enavate Sciences GP, LLC | $76.6M | 3.9M | —Held | Q1 2026 | |
| 5 | FEDERATED HERMES, INC. | $61.1M | 3.1M | ▲+15% Added · +411K sh | Q1 2026 | |
| 6 | Polar Capital Holdings Plc | $61.2M | 2.4M | ▼−5.3% Reduced · −136K sh | Q2 2026 | |
| 7 | Royalty Pharma Sub-Manager, LLC | $60.6M | 2.4M | —Held | Q2 2026 | |
| 8 | Fairmount Funds Management LLC | $59.9M | 2.4M | —Held | Q2 2026 | |
| 9 | STATE STREET CORP | $52.2M | 2.1M | ▲+40% Added · +584K sh | Q2 2026 | |
| 10 | BlackRock, Inc. | $39.8M | 2.0M | ▲+15% Added · +270K sh | Q1 2026 | |
| 11 | NVP Associates, LLC | $46.7M | 1.8M | —Held | Q2 2026 | |
| 12 | VANGUARD CAPITAL MANAGEMENT LLC | $24.3M | 1.2M | →First observed position No prior filed position | Q1 2026 | |
| 13 | ALLIANCEBERNSTEIN L.P. | $32.6M | 897K | ▲49× Added · +879K sh | Q1 2026 | |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | $22.4M | 883K | ▲+35% Added · +227K sh | Q2 2026 | |
| 15 | EcoR1 Capital, LLC | $15.4M | 790K | —Held | Q1 2026 | |
| 16 | BALYASNY ASSET MANAGEMENT L.P. | $13.0M | 667K | ▲+245% Added · +474K sh | Q1 2026 | |
| 17 | ArrowMark Colorado Holdings LLC | $12.9M | 659K | ▼−12% Reduced · −92K sh | Q1 2026 | |
| 18 | Woodline Partners LP | $11.5M | 591K | ▲New +591K sh | Q1 2026 | |
| 19 | GREAT POINT PARTNERS LLC | $10.2M | 524K | ▲New +524K sh | Q1 2026 | |
| 20 | SILVERARC CAPITAL MANAGEMENT, LLC | $12.9M | 510K | ▼−55% Reduced · −626K sh | Q2 2026 | |
| 21 | Rock Springs Capital Management LP | $12.7M | 502K | —Held | Q2 2026 | |
| 22 | MARSHALL WACE, LLP | $9.8M | 502K | ▲71× Added · +495K sh | Q1 2026 | |
| 23 | MILLENNIUM MANAGEMENT LLC | $9.3M | 477K | ▲+870% Added · +428K sh | Q1 2026 | |
| 24 | BANK OF AMERICA CORP /DE/ | $7.6M | 388K | ▲+723% Added · +341K sh | Q1 2026 | |
| 25 | GOLDMAN SACHS GROUP INC | $7.5M | 381K | ▲+192% Added · +251K sh | Q1 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, 22 funds opened a new position in ZBIO and 21 added to an existing one, while 7 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 |
|---|---|---|
| AMAZON.COM INCAMZN | 61 funds | $97.4B |
| ELI LILLY & COLLY | 61 funds | $41.1B |
| NVIDIA CORPNVDA | 60 funds | $207.1B |
| MICROSOFT CORPMSFT | 60 funds | $134.9B |
| META PLATFORMS INC-CLASS AMETA | 60 funds | $60.3B |
| BANK OF AMERICA CORPBAC | 60 funds | $13.7B |
| BROADCOM INCAVGO | 59 funds | $83.5B |
| TESLA INCTSLA | 59 funds | $36.8B |
| ADVANCED MICRO DEVICESAMD | 59 funds | $20.6B |
| MICRON TECHNOLOGY INCMU | 59 funds | $17.2B |
| LAM RESEARCH CORPLRCX | 59 funds | $15.3B |
| VISA INC-CLASS A SHARESV | 58 funds | $33.2B |
Ranked by how many of ZBIO's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| May 18, 2026 | MOULDER LEON O JR | Chief Executive Officer, Director | Buy (P) | 60K | $1.0M |
| Apr 29, 2026 | MOULDER LEON O JR | Chief Executive Officer, Director | Buy (P) | 35K | $617K |
| Apr 28, 2026 | MOULDER LEON O JR | Chief Executive Officer, Director | Buy (P) | 25K | $451K |
| Mar 31, 2026 | Lu Hongbo | Director | Buy (P) | 75K | $1.5M |
| Mar 31, 2026 | MOULDER LEON O JR | Chief Executive Officer, Director | Buy (P) | 34K | $657K |
| Mar 31, 2026 | Fairmount Funds Management LLC | Director | Buy (P) | 150K | $3.0M |
| Mar 31, 2026 | Lu Hongbo | Director | Buy (P) | 4K | $70K |
| Mar 30, 2026 | MOULDER LEON O JR | Chief Executive Officer, Director | Buy (P) | 20K | $365K |
| Feb 13, 2026 | Allen Patricia L | Director | Buy (P) | 4K | $110K |
| Feb 12, 2026 | Allen Patricia L | Director | Buy (P) | 6K | $139K |
| Feb 12, 2026 | Allen Patricia L | Director | Buy (P) | 5K | $119K |
| Feb 12, 2026 | Allen Patricia L | Director | Buy (P) | 5K | $133K |
| Class | 13F holders | Value held |
|---|---|---|
| ZBIOthis pageStock | 130 funds | $1.1B |
| ZBIO 2.5 04/01/32SDBCV | 13 funds | $157.2M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for ZBIO
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/ZBIO/capital-change-brief"
Use Arkolith's capital_change_brief for ZBIO. 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 ZBIO. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.