Fundamentals are the more conservative approach. Could cydy see a gamestop like short squeeze? Maybe although I don't know proportionally shorted vs available shares for them(poor citron, got one very wrong, so sad..hello margin is that you? I've been dreading your call)

However sentiment trading will be hard to predict which is what moderna would be. Looks like their mkt cap is 50billion for having a vaccine only which is not highly profitable per dose(usually). If we hit that valuation on covid alone with a drug we can make a higher profit margin on that puts us at ~70 per share(assuming 700 million available shares). But that depends on the markets mood. I can't predict my wife's mood so thousands of fickle investors is near impossible even for elliott wave purists. They still deal with if this then this scenarios.

All that to say yes it could happen, but fundamentals are a better way to decide how much something is worth, because bubbles pop eventually. My two cents opinion worth less than what you paid for.