Caligan Partners LP: VAXCYTE INC (PCVX): Quarterly 13F Position History
As of Q1 2026, Caligan Partners LP reported 2,060,719 shares of VAXCYTE INC (PCVX), worth $119.7M and representing 8.5% of its 13F equity book. Quarter-over-quarter share count change: + 355,904 (+20.9%) . The position first appeared in Q4 2025 and has been disclosed across 2 13F-HR filings in Pactolio's tracked window.
- 2,060,719Shares Held (Latest Filing)
- $119.7MReported Market Value (Latest Filing)
- 8.5%Portfolio Weight (% of 13F Equity Book)
- +355,904Quarter-over-Quarter Share Change
- +$41.1MQuarter-over-Quarter Value Change
- 2,060,719Peak Reported Shares (Historical)
Recent initiation: Caligan Partners LP first reported PCVX on the Q4 2025 filing — 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 |
|---|---|---|---|---|---|---|
| Q1 2026 | 2,060,719 | +355,904 | +20.9% | $119.7M | 8.5% | $58.1 |
| Q4 2025 | 1,704,815 | — | — | $78.7M | 7.2% | $46.1 |
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 Caligan Partners LP first disclose a PCVX position in 13F-HR filings?
Caligan Partners LP first reported VAXCYTE INC (PCVX) on its 13F-HR filing for the period ending 2025-12-31 (Q4 2025). The position has appeared on 2 reported quarters within Pactolio's tracked window.
What was Caligan Partners LP's most recent quarter-over-quarter share-count change in PCVX?
Between Q4 2025 and Q1 2026, Caligan Partners LP added 355,904 shares of PCVX (+20.9%), bringing the total reported position to 2,060,719 shares at a market value of $119.7M.
Does the implied price-per-share represent Caligan Partners LP's cost basis in PCVX?
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.