09:10 AM EDT, 05/14/2024 (MT Newswires) -- US stocks look set to open flat in Tuesday's session as a main indicator of inflation came in higher than expected earlier in the morning.

The Dow Jones Industrial Average futures were up 0.06%, S&P 500 futures were unchanged, and Nasdaq futures were off 0.15%.

The producer price index, a leading indicator of consumer price inflation, rose 0.5% in April, higher than the 0.3% increase expected by forecasters, according to Investing.com. Despite the higher-than-expected inflation gauge, stocks were relatively unchanged during premarket trading.

Oil prices were moving lower, with front-month global benchmarks Brent crude and West Texas Intermediate crude declining 0.66% and 0.78%, respectively.

In other world markets, Japan's Nikkei rose 0.46%, Hong Kong's Hang Seng was down 0.22%, and China's Shanghai Composite was off 0.07%. Meanwhile in Europe's early afternoon session, the UK's FTSE 100 was up 0.34%, while Germany's DAX was down 0.28% and France's CAC was rising 0.11%.

On the winning side, shares of SunPower (SPWR) skyrocketed 154% in Tuesday's premarket session, adding to a 20% gain on Monday. GameStop ( GME ) shares soared 124%, adding to a 74% gain on Monday, while AMC Entertainment ( AMC ) jumped 113%, adding to 78% the previous session. Media reported that the rallies for the two stocks coincided with the return to social media Sunday of Keith Gill, also known as "Roaring Kitty," who took part in a 2021 meme stock rally. Meanwhile, shares of Plug Power ( PLUG ) surged 66% after it said Tuesday that it has received a conditional commitment for a loan guarantee worth up to $1.66 billion from the Department of Energy. And shares of Faraday Future Intelligent Electric ( FFIE ) advanced 56%, adding to a 32% gain on Monday.

On the losing side, shares of Augmedix (AUGX) plunged 45% after it was downgraded Tuesday by analysts at Evercore ISI to an in-line rating from outperform, while the price target was set at $1.50 per share. Inotiv ( NOTV ) shares tumbled 37% after Jefferies analysts downgraded the stock to hold from buy and set its price target at $3.75. Akoya Biosciences (AKYA) shares were down more than 25% after the company reported lower Q1 revenue Monday from a year earlier. Shares of Shimmick ( SHIM ) dropped 20% after it reported Q1 earnings late Monday that missed Street forecasts. And Biolase ( BIOL ) shares dropped 12% after reporting lower Q1 net revenue from a year earlier on Monday.