Avidity Partners Management LP: JADE BIOSCIENCES INC (JBIO): Quarterly 13F Position History
As of Q2 2026, Avidity Partners Management LP reported 1,700,708 shares of JADE BIOSCIENCES INC (JBIO), worth $37.8M and representing 6.1% of its 13F equity book. Quarter-over-quarter share count change: + 300,000 (+21.4%) . The position first appeared in Q2 2025 and has been disclosed across 5 13F-HR filings in Pactolio's tracked window.
- 1,700,708Shares Held (Latest Filing)
- $37.8MReported Market Value (Latest Filing)
- 6.1%Portfolio Weight (% of 13F Equity Book)
- +300,000Quarter-over-Quarter Share Change
- +$3.6MQuarter-over-Quarter Value Change
- 1,700,708Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 5 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q2 2026 | 1,700,708 | +300,000 | +21.4% | $37.8M | 6.1% | $22.2 |
| Q1 2026 | 1,400,708 | 0 | – | $34.2M | 7.7% | $24.4 |
| Q4 2025 | 1,400,708 | +273,522 | +24.3% | $21.6M | 6.2% | $15.4 |
| Q3 2025 | 1,127,186 | 0 | – | $9.7M | 2.2% | $8.6 |
| Q2 2025 | 1,127,186 | – | – | $11.3M | 2.3% | $10.0 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares, a quarter-end mark rather than the manager's cost basis. See the full methodology document for the normalization rules.
When did Avidity Partners Management LP first disclose a JBIO position in 13F-HR filings?
Avidity Partners Management LP first reported JADE BIOSCIENCES INC (JBIO) on its 13F-HR filing for the period ending 2025-06-30 (Q2 2025). The position has appeared on 5 reported quarters within Pactolio's tracked window.
What was Avidity Partners Management LP's most recent quarter-over-quarter share-count change in JBIO?
Between Q1 2026 and Q2 2026, Avidity Partners Management LP added 300,000 shares of JBIO (+21.4%), bringing the total reported position to 1,700,708 shares at a market value of $37.8M.
Does the implied price-per-share represent Avidity Partners Management LP's cost basis in JBIO?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.