Avidity Partners Management LP: ENLIVEN THERAPEUTICS INC (ELVN): Quarterly 13F Position History
As of Q1 2026, Avidity Partners Management LP reported 400,000 shares of ENLIVEN THERAPEUTICS INC (ELVN), worth $16.5M and representing 3.7% of its 13F equity book. Quarter-over-quarter share count change: + 259,700 (+185.1%) . The position first appeared in Q1 2025 and has been disclosed across 5 13F-HR filings in Pactolio's tracked window.
- 400,000Shares Held (Latest Filing)
- $16.5MReported Market Value (Latest Filing)
- 3.7%Portfolio Weight (% of 13F Equity Book)
- +259,700Quarter-over-Quarter Share Change
- +$14.3MQuarter-over-Quarter Value Change
- 400,000Peak 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 |
|---|---|---|---|---|---|---|
| Q1 2026 | 400,000 | +259,700 | +185.1% | $16.5M | 3.7% | $41.2 |
| Q4 2025 | 140,300 | 0 | — | $2.2M | 0.6% | $15.4 |
| Q3 2025 | 140,300 | +129,000 | +1141.6% | $2.9M | 0.7% | $20.5 |
| Q2 2025 | 11,300 | 0 | — | $226.7K | 0.0% | $20.1 |
| Q1 2025 | 11,300 | — | — | $222.4K | 0.0% | $19.7 |
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 ELVN position in 13F-HR filings?
Avidity Partners Management LP first reported ENLIVEN THERAPEUTICS INC (ELVN) on its 13F-HR filing for the period ending 2025-03-31 (Q1 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 ELVN?
Between Q4 2025 and Q1 2026, Avidity Partners Management LP added 259,700 shares of ELVN (+185.1%), bringing the total reported position to 400,000 shares at a market value of $16.5M.
Does the implied price-per-share represent Avidity Partners Management LP's cost basis in ELVN?
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.