Zenas Biopharma
ZBIO · NASDAQ
$28.18+$1.47 (+5.50%)TodayMarket closed ·
Prev close $26.71
Who owns ZBIO
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 59.9% of ZBIO’s shares.
- Fidelity Management & Research Company LLC11.8%
- SR One Capital Management, LP8.0%
- InnoCare Pharma Inc.7.9%
- New Enterprise Associates (NEA)6.4%
- Next 6 largest institutions25.8%
- All other shareholders40.1%
| Holder | Shares | % of shares |
|---|---|---|
| Fidelity Management & Research Company LLC | 7.47M | 11.83% |
| SR One Capital Management, LP | 5.04M | 7.98% |
| InnoCare Pharma Inc. | 5.00M | 7.92% |
| New Enterprise Associates (NEA) | 4.02M | 6.37% |
| Enavate Sciences GP, LLC | 3.25M | 5.14% |
| Federated Hermes Global Investment Management Corp. | 3.12M | 4.94% |
| Longitude Capital Management Co., LLC | 2.61M | 4.13% |
| Capital International Investors | 2.50M | 3.96% |
| Polar Capital LLP | 2.41M | 3.82% |
| BlackRock Institutional Trust Company, N.A. | 2.41M | 3.82% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| American Funds SMALLCAP World Fund | 2.43M | 3.86% |
| Polar Capital Biotechnology Fund | 2.29M | 3.62% |
| State Street SPDR S&P Biotech ETF | 1.42M | 2.26% |
| Federated Hermes Kaufmann Fund | 1.33M | 2.11% |
| Fidelity Select Health Care Portfolio | 1.08M | 1.71% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $2.08M (3 trades) of ZBIO on the open market, with no sales.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Oliger Christy J. | Award | 37.00K | — |
| ORLOFF JOHN J | Award | 18.50K | — |
| Nunn Jason Raleigh | Award | 18.50K | — |
| Allen Patricia L | Award | 18.50K | — |
| Farmer Joseph L | Award | 175.00K | — |
| ENRIGHT PATRICK G | Award | 18.50K | — |
| MOULDER LEON O JR | Award | 500.00K | — |
| MOULDER LEON O JR | Buy | 60.00K | $1.01M |
| MOULDER LEON O JR | Buy | 35.00K | $616.70K |
| MOULDER LEON O JR | Buy | 25.00K | $450.50K |
Short interest
Settled Sep 30, 2026
- Shares short
- 11.94M
- Days to cover
- 15.48
- % of shares outstanding
- 18.92%
- Average daily volume
- 771.65K
- Change since last report
- +0.6%
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