Parabilis Medicines
PBLS · NASDAQ
$27.08+$1.73 (+6.82%)TodayMarket closed ·
Prev close $25.35
Who owns PBLS
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 67.1% of PBLS’s shares.
- RA Capital Management, LP25.0%
- Fidelity Management & Research Company LLC8.8%
- ARCH Venture Partners5.5%
- VenBio Partners LLC4.5%
- Next 6 largest institutions23.3%
- All other shareholders32.9%
| Holder | Shares | % of shares |
|---|---|---|
| RA Capital Management, LP | 29.18M | 25.03% |
| Fidelity Management & Research Company LLC | 10.28M | 8.82% |
| ARCH Venture Partners | 6.41M | 5.50% |
| VenBio Partners LLC | 5.27M | 4.52% |
| Alphabet, Inc. | 4.92M | 4.22% |
| Nextech Invest, Ltd. | 4.66M | 4.00% |
| Cormorant Asset Management, LP | 4.62M | 3.96% |
| Milky Way Investments Group Ltd | 4.57M | 3.92% |
| Regeneron Pharmaceuticals, Inc. | 4.17M | 3.57% |
| Nextech VII Oncology SCSp. | 4.16M | 3.57% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 1.12M | 0.96% |
| Vanguard Small-Cap Index Fund | 809.17K | 0.69% |
| T. Rowe Price Health Sciences Fund | 486.67K | 0.42% |
| JPMorgan Small Cap Growth Fund | 480.21K | 0.41% |
| Fidelity Growth Company Fund | 478.76K | 0.41% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $6.92M (6 trades) of PBLS on the open market, with no sales.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Tendler Craig | Award | 20.29K | — |
| RA CAPITAL MANAGEMENT, L.P. | Buy | 47.25K | $1.41M |
| RA CAPITAL MANAGEMENT, L.P. | Buy | 37.72K | $1.13M |
| RA CAPITAL MANAGEMENT, L.P. | Buy | 6.50K | $189.72K |
| RA CAPITAL MANAGEMENT, L.P. | Buy | 21.70K | $606.62K |
| RA CAPITAL MANAGEMENT, L.P. | Buy | 32.99K | $914.40K |
| RA CAPITAL MANAGEMENT, L.P. | Buy | 98.43K | $2.67M |
Short interest
Settled Sep 30, 2026
- Shares short
- 8.26M
- Days to cover
- 4.84
- % of shares outstanding
- 7.09%
- Average daily volume
- 1.71M
- Change since last report
- +35.6%
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