What happened Moderna (NASDAQ: MRNA) provided an up-and-down ride for its investors on Friday, with the stock trading as much as 1.5% higher and 8.5% lower than its previous day's close. Ultimately, it landed essentially flat on the day. Several bits of news were responsible for the push-pull dynamic. So what Moderna announced that its partner in Japan, Takeda Pharmaceutical, submitted a New Drug Application (NDA) for its now-famous mRNA-1273 coronavirus vaccine (known as TAK-919 in that nation). Image source: Getty Images. In another potentially positive development, a study conducted at California's La Jolla Institute for Immunology seems to indicate that the T cells produced by mRNA-1273 are efficacious against the four currently most concerning variants of the coronavirus. The catch is, the research is based on a set of lab tests and thus do not offer definitive proof. Also, the research has not yet been peer-reviewed. In addition, Pfizer and BioNTech's BNT162b2 was found to have similar properties. On a more discouraging note for Moderna, Reuters reported Friday that fresh research indicates that AZD1222, the rival coronavirus vaccine candidate from AstraZeneca and the University of Oxford, is effective against the P1, or "Brazil," variant. Now what As none of these developments were decisive or momentous, shareholders seemed unsure of how to trade Moderna on Friday. However, I think the news was generally good for the biotech, particularly the Japan New Drug Application (even if it was more or less expected). Moderna stock still looks like a good investment. 10 stocks we like better than Moderna Inc.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 Moderna Inc. wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of February 24, 2021 Eric Volkman has no position in any of the stocks mentioned. The Motley Fool recommends Moderna Inc. The Motley Fool has a disclosure policy.Source