Here Are the 10 Best-Performing Stocks in May

Editors' pick: Originally published June 1.

Investors who ignored the "sell in May and go away" theory and bought these 10 S&P 500 stocks profited big time last month.

Despite the S&P 500 giving back 1.53% for the month, all 10 of these stocks had double-digit returns.

Check out last month's winners.

10. Activision Blizzard
10. Activision Blizzard

Market Cap: $29 billion
Stock Return in May: 13.9%

Activision Blizzard (ATVI - Get Report) got a recent vote of confidence from Pacific Crest Securities analysts who reaffirmed their overweight rating and raised the price target on the video game company by $2 to $43, aided by strong expectations for Overwatch, its newest game franchise, launched on May 24.

Pacific Crest Securities now expects about 7 million units of Overwatch to sell in the fiscal second quarter, compared with the previous estimate of 5 million units.

"Overwatch has wide appeal with its 'friendly' gameplay, short 6 to 16 minute game sessions (allowing for ads between sessions) and custom camera angles specifically for eSports. Success in eSports would drive more engagement and provide a longer revenue stream due to ancillary revenue streams like events, merchandise and advertising," the May 26 report said. "We continue to recommend ATVI. The success of Overwatch adds another leg to the stool."

Analysts, according to Thomson Reuters, are projecting Activision to report annual EPS of $1.84 a share on revenue of $6.3 billion. The targets are up 39% and 37% from the year prior, respectively.

Activision has a dividend yield of 0.66%.

9. Netflix
9. Netflix

Market Cap: $44 billion
Stock Return in May: 13.93%

Shares of Netflix (NFLX - Get Report) have been rocky this year. While the stock is up nearly 15% this month, it is still down for the year. Shares got a boost earlier this month over rumors that Apple (AAPL - Get Report) could acquire the streaming video services. As well, Netflix secured the rights to exclusively stream Walt Disney  (DIS - Get Report) movies starting this fall.

TheStreet's Jim Cramer holds shares of Apple in his Action Alerts PLUS charitable trust.

That said shares tumbled in April following Netflix's quarterly results as investors worried about the streaming service's growth going forward. While Netflix reported better-than-expected earnings for the first quarter, its revenue growth fell a bit short of analyst's expectations. Even more so, the company's guidance for second-quarter subscriber growth, which was less than analysts had expected, spooked Wall Street.

Analysts, according to Thomson Reuters, are projecting Netflix to report annual EPS of 27 cents a share on revenue of $8.72 billion. The targets are down 3% and up 29% from the year prior, respectively.

Netflix does not pay a dividend.

8. Williams Cos.
8. Williams Cos.

Market Cap: $16.5 billion
Stock Return in May: 14.29%

Williams Cos. (WMB - Get Report) is embroiled in a legal battle with Energy Transfer Equity (ETE) over their troubled merger agreement. While the deal hasn't officially been called off, each side is suing the other.

The collapse in oil prices put the merger in jeopardy as the tie-up became less appealing, causing Energy Transfer Equity to claim that a tax issue could prevent the deal from closing in its current form. Energy Transfer Partners was looking to amend the financing of the deal that was originally a cash-and-stock transaction to an all-stock deal. When announced in September, the combination of the two companies was originally valued at $33 billion, said Reuters.

Williams Cos. has consequently sued, alleging that Energy Transfer Equity has been actively attempting to derail the merger.

On Friday, Williams told Energy Transfer Partners that it was open to an amended offer that would end the stalemate between the two pipeline companies, according to Reuters.

That said, the recent rally in natural gas prices has given both companies a boost.

Williams Cos. has a dividend yield of 11.92%.

7. Dun & Bradstreet
7. Dun & Bradstreet

Market Cap: $4.6 billion
Stock Return in May: 14.94%

Business information provider Dun & Bradstreet (DNB) reported better-than-expected quarterly earnings of $30 million, or 82 cents a share, on May 9. However revenue of $375 million, up 5% from the year-earlier, fell shy of expectations.

Analysts, according to Thomson Reuters, are projecting Dun & Bradstreet to report annual EPS of $7.36 a share on revenue of $1.72 billion. The targets are up 2% and up 4% from the year prior, respectively.

Dun & Bradstreet has a dividend yield of 1.53%.

6. Micron Technology
6. Micron Technology

Market Cap: $16.5 billion
Stock Return in May: 18.33%

Micron Technology (MU - Get Report) shares have been struggling this year, but analysts are becoming increasingly bullish on the semiconductor company's stock.

Shares of Micron got a boost on Tuesday from Robert W. Baird analysts who upgraded Micron to outperform from neutral.

"Samsung may shift meaningful capacity from DRAM to NAND this second half," RW Baird wrote in a note. "Near term, PC units are rebounding above expectation -- off a dismal 1Q -- while the China smartphone market is also rebounding."

Analysts, according to Thomson Reuters, are projecting Micron to report annual EPS of 14 cents a share on revenue of $12.44 billion. The targets are down 95% and up 23% from the year prior, respectively.

Micron does not pay a dividend.

5. Applied Materials
5. Applied Materials

Market Cap: $28 billion
Stock Return in May: 19.3%

Applied Materials (AMAT - Get Report) is another computer chip maker that benefited last month. The company recently reported better-than-expected quarterly results and upped its guidance based on improved order and backlog numbers as fundamentals in the semiconductor industry improves, the debut of the super-fast NAND memory debuts and the OLED equipment market is expected to grow substantially, Real Money's Chris Laudani wrote last week.

"Since Applied Materials trades on future bookings and orders, earnings estimates and trading multiples are useless in predicting the future appreciation of the shares. Investors will be watching Applied's annual analyst meeting in September for more guidance on future bookings. But given these three big catalysts, I think Applied could be in the early stages of a fab upgrade cycle that could carry the stock well above $25 per share," Laudani wrote.

Analysts, according to Thomson Reuters, are projecting Applied Materials to report annual EPS of $1.53 a share on revenue of $10.37 billion. The targets are up 28% and up 7% from the year prior, respectively.

Applied Materials has a dividend yield of 1.64%.

4. Oneok
4. Oneok

Market Cap: $9 billion
Stock Return in May: 19.64%

Shares of Oneok (OKE - Get Report) have surged more than 75% in 2016, with its May return one of the top four in the S&P 500.

Analysts, according to Thomson Reuters, are projecting Oneok to report annual EPS of $1.76 a share on revenue of $8.26 billion. The targets are up 16% and up 6% from the year prior, respectively.

Oneok has a dividend yield of 5.76%.

3. Monsanto
3. Monsanto

Market Cap: $49 billion
Stock Return in May: 20%

Monsanto (MON) got a boost in May when Bayer, the German pharmaceuticals company, bid $62 billion, or $122 a share in cash offer, for the seed company. Monsanto rejected the offer, but rumors sparked on Tuesday that Bayer could be gearing up to raise its offer.

Analysts, according to Thomson Reuters, are projecting Monsanto to report annual EPS (its fiscal year ends in August) of $4.63 a share on revenue of $13.69 billion. The targets are down 19% and down 7% from the year prior, respectively.

Monsanto has a dividend yield of 1.97%.

2. Electronic Arts
2. Electronic Arts

Market Cap: $23.7 billion
Stock Return in May: 24.09%

Video game publisher Electronic Arts (EA - Get Report) is the second-best-performing stock in the S&P 500 in May. The industry's shift to mobile gaming has presented a big opportunity to Electronic Arts and the gaming industry.

"The firm's sports franchises, which contribute nearly 50% of overall sales, lend themselves well to porting on mobile devices -- more so than platform-intense titles like first-person shooters and racing games, anyway -- giving EA the ability to open the tap on what's proving to be the biggest growth opportunity in the industry right now," TheStreet's Jonas Elmerraji wrote. "An increased focus on downloadable content and smaller, more frequent titles in mobile should help smooth out revenue recognition, limiting some of the lumpiness of sales tied to game releases."

Analysts, according to Thomson Reuters, are projecting Electronic Arts to report annual EPS of $3.58 a share on revenue of $4.92 billion. The targets are up 14% and up 8% from the year prior, respectively.

Electronic Arts does not pay a dividend.

1. Nvidia
1. Nvidia

Market Cap: $25.4 billion
Stock Return in May: 31.49%

Investors are bullish on Nvidia (NVDA - Get Report) , a graphics technology company based in Santa Clara, Calif. The company is reportedly pushing into the self-driving car market using artificial intelligence, according to Investor's Business Daily.

TheStreet's John Persinos claimed that Nvidia could be the next Apple as it dominates the virtual reality industry and is the "best VR play now."

Analysts, according to Thomson Reuters, are projecting Nvidia to report annual EPS of $1.56 a share on revenue of $5.57 billion. The targets are up 45% and up 11% from the year prior, respectively.

Nvidia's pays dividend yield of 1%.

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