What happened
Amusement park stocks rose sharply on Wednesday, as investors cheered news of progress toward the development of a COVID-19 vaccine.
By the close of trading, shares of SeaWorld (NYSE: SEAS), Six Flags (NYSE: SIX), and Cedar Fair (NYSE: FUN) were up 15%, 13%, and 7%, respectively.
So what
Amusement park companies could benefit tremendously from a safe and effective vaccine for COVID-19. Health authorities have forced their parks to remain closed for much of the year due to concerns that large crowds could perpetuate the spread of the dangerous disease.
Worse still, even as some parks begin to reopen, they're unlikely to enjoy strong attendance. Many people will choose to forego vacations at crowded locations due to fears of getting sick.

Amusement park stocks rebounded on Wednesday. Image source: Getty Images.
Fortunately, theme park companies finally received some good news. An interim analysis of Moderna's phase 1 study for its experimental COVID-19 vaccine showed that it produced neutralizing antibodies -- which doctors say could protect against novel coronavirus infections -- in all of the trial's participants.
Now what
Although Six Flags, SeaWorld, and Cedar Fair have all gone to great lengths to increase the safety of their guests -- such as implementing social distancing measures and new cleaning regimens at their parks -- it likely won't be enough to return their business to previous levels.
However, an effective vaccine for COVID-19 could go a long way toward helping amusement parks return to their former splendor. Although much more testing is needed, Moderna's vaccine progress could be an important step on the path to recovery.
10 stocks we like better than Six Flags
When investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.*
David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and Six Flags wasn't one of them! That's right -- they think these 10 stocks are even better buys.
*Stock Advisor returns as of June 2, 2020
Joe Tenebruso has no position in any of the stocks mentioned. The Motley Fool recommends Cedar Fair. The Motley Fool has a disclosure policy.
The views and opinions expressed herein are the views and opinions of the author and do not necessarily reflect those of Nasdaq, Inc.