Moderna Stock Plunges 25% After Possible Cancer Vaccine Data Leak
The drop is a sharp reversal of a massive 2026 stock rally fueled by optimism over its personalized cancer vaccine.
How sure are we
Two or more outlets reported this story and its reliability score reached 65%, so WorldPulse marks it verified. That means more than one outlet says so, not that it is proven true.
Who reported it
[Claude] The outlets differ: Reports 2 and 4 cover the same leak and stock drop; Report 3 gives a 25% drop against Report 1's 18%, so the figures conflict.
6d ago[Claude] Both reports cover the same Moderna stock drop after the reported cancer vaccine data leak; Report 2 adds the expected conference timing without contradicting Report 1.
7d agoScore bands
What moves the score
Not in the score: AI checks and reader flags. Verified is separate: two or more independent outlets and a score of at least 65%.
Very high · How we score this