After starting the day comfortably in positive territory, the stock market drifted lower throughout the afternoon, then largely remained negative as Republicans pulled their healthcare bill after it became clear it would not be able to garner enough support to pass a key House vote. When all was said and done, the Dow Jones Industrial Average declined 60 points, or roughly 0.3%, and the S&P 500 declined a more modest 0.1%. Meanwhile, the Nasdaq managed to climb 11 points, or 0.2%, as the market came to a close. 

But several individual stocks still delivered gains for investors today, including SeaWorld Entertainment (NYSE:SEAS), Micron Technology (NASDAQ:MU), and Under Armour (NYSE:UA)(NYSE:UAA). Read on to see what drove these unusual moves.

SeaWorld's new investor

Shares of SeaWorld rose as much as 11.1% early in the day, then settled to close up nearly 5% after the theme park operator announced that Chinese strategic investment firm Zhonghong Group will acquire a roughly 21% equity stake in the company from Blackstone. More specifically, Zhonghong Group subsidiary Zhonghong Holding will purchase the stake from funds affiliated with Blackstone at a price of $23 per share -- a hefty premium over SeaWorld's closing price yesterday of just $17.31 per share.

SeaWorld Orcas jumping in front of a "One Ocean" sign

Image source: SeaWorld Entertainment.

In addition, SeaWorld agreed to provide advisory services and support agreements to Zhonghong Holding exclusively on the concept development and design of theme parks, water parks, and entertainment centers to be developed and operated by Zhonghong in China, Taiwan, Hong Kong, and Macau. Zhonghong also agreed to "certain restrictions" for its ability to sell its new stake in SeaWorld for two years, as well as limitations on its ability to acquire over 24.9% of outstanding shares without the approval of independent directors on SeaWorld's board.

Micron's earnings beat

Micron Technology stock rose over 7% today after the computing and storage specialist announced stronger-than-expected results for its fiscal second quarter ended March 2, 2017. Micron's quarterly revenue climbed 58.4% year over year, to $4.65 billion, and translated to adjusted net income of $1.03 billion, or $0.90 per diluted share. Both figures were above analysts' consensus estimates, which called for adjusted earnings of just $0.85 per share on revenue of $4.64 billion.

Micron CEO Mark Durcan credited strong demand and limited supplies for its NAND and DRAM products, as well as "significant progress" on Micron's cost-reduction initiatives.

"I am proud of the team's execution on critical technology and operational initiatives," added Durcan, "which will allow us to continue to capitalize on market trends."

Under Armour finds the floor

Finally, shares of Under Armour jumped 3.6% -- after hitting a fresh 52-week-low earlier in the week -- as Jefferies analyst Randal Konik upgraded his rating for the company to buy from hold. Konik also increased his per-share price target on Under Armour stock to $27 from $19.

To justify his bullishness, Konik explained that Under Armour's share price has likely bottomed, and the company is positioned to capitalize on the athletic apparel and footwear segments, which have easily outgrown traditional apparel and footwear over the past few years.

Konik elaborated, "This trend should continue in the U.S., where UA has significant exposure, and internationally, where UA penetration is growing."

To be sure, Under Armour's revenue from international markets climbed 63% year over year in 2016, but still represented just 15% of total sales. So when Under Armour's core performance apparel segment in the U.S. showed signs of slowing growth amid a highly competitive retail environment recent quarters, it was no surprise that investors took a step back. But with shares still down more than 30% so far in 2017, it's equally unsurprising to see Wall Street beginning to voice renewed optimism today.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.