EcoR1 Capital, LLC: AKTIS ONCOLOGY INC (AKTS): Quarterly 13F Position History
As of Q2 2026, EcoR1 Capital, LLC reported 4,824,469 shares of AKTIS ONCOLOGY INC (AKTS), worth $155.5M and representing 7.7% of its 13F equity book. The position first appeared in Q1 2026 and has been disclosed across 2 13F-HR filings in Pactolio's tracked window.
- 4,824,469Shares Held (Latest Filing)
- $155.5MReported Market Value (Latest Filing)
- 7.7%Portfolio Weight (% of 13F Equity Book)
- 0Quarter-over-Quarter Share Change
- +$69.2MQuarter-over-Quarter Value Change
- 4,824,469Peak Reported Shares (Historical)
Recent initiation: EcoR1 Capital, LLC first reported AKTS on the Q1 2026 filing, so fewer than three quarters of history are available.
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 2 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q2 2026 | 4,824,469 | 0 | – | $155.5M | 7.7% | $32.2 |
| Q1 2026 | 4,824,469 | – | – | $86.3M | 3.7% | $17.9 |
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 EcoR1 Capital, LLC first disclose a AKTS position in 13F-HR filings?
EcoR1 Capital, LLC first reported AKTIS ONCOLOGY INC (AKTS) on its 13F-HR filing for the period ending 2026-03-31 (Q1 2026). The position has appeared on 2 reported quarters within Pactolio's tracked window.
What was EcoR1 Capital, LLC's most recent quarter-over-quarter share-count change in AKTS?
EcoR1 Capital, LLC held the same 4,824,469 shares of AKTS between Q1 2026 and Q2 2026, so the reported share count was unchanged quarter-over-quarter.
Does the implied price-per-share represent EcoR1 Capital, LLC's cost basis in AKTS?
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.