Avidity Partners Management LP — JADE BIOSCIENCES, INC. JBIO: Quarterly 13F Position History
Avidity Partners Management LP has reported JADE BIOSCIENCES, INC. (JBIO) on 4 13F-HR filings in Pactolio's tracked window, first appearing in Q2 2025. As of Q1 2026, the position is sized at 1,400,708 shares ($34.2M market value, 7.73% of the equity book).
- 1,400,708Shares Held (Latest Filing)
- $34.2MReported Market Value (Latest Filing)
- 7.73%Portfolio Weight (% of 13F Equity Book)
- 0Quarter-over-Quarter Share Change
- +$12.6MQuarter-over-Quarter Value Change
- 1,400,708Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 4 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 1,400,708 | 0 | — | $34.2M | 7.73% | $24.40 |
| Q4 2025 | 1,400,708 | +273,522 | +24.3% | $21.6M | 6.23% | $15.43 |
| Q3 2025 | 1,127,186 | 0 | — | $9.7M | 2.21% | $8.63 |
| Q2 2025 | 1,127,186 | — | — | $11.3M | 2.26% | $9.99 |
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, not 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 4 reported quarters within Pactolio's tracked window.
What was Avidity Partners Management LP's most recent quarter-over-quarter share-count change in JBIO?
Avidity Partners Management LP held the same 1,400,708 shares of JBIO between Q4 2025 and Q1 2026 — the reported share count was unchanged quarter-over-quarter.
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.