U.S. markets ended mixed on Tuesday as investors remained concerned over the mounting opposition to the debt ceiling deal ahead of a crucial vote in Congress on Wednesday. However, the rise in NVIDIA Corporation's (NASDAQ:NVDA) stock that briefly led the chip-maker into the $ 1 trillion market capitalization club lifted investor sentiments. Meanwhile, the following are the five stocks that are drawing investors' attention:

1. Tesla Inc (NASDAQ:TSLA): Shares of Tesla closed 4.14% higher on Tuesday. Chief Executive Elon Musk on Tuesday commenced a high-stakes visit to China, having met the country’s foreign minister Qin Gang in Beijing. Qin told Musk that China was committed to improving the business environment for investors, according to a Reuters report.

2. C3.ai Inc (NYSE:AI): Shares of the company closed 33.42% higher on Tuesday. C3.ai is scheduled to report its quarterly earnings on Wednesday. The company is expected to report a loss of 17 cents per share on revenue of $71.32 million, according to an estimate from Benzinga Pro.

3. Target Corp (NYSE:TGT): Shares of the company closed 3.66% lower on Tuesday. The stock has lost 11% over the last five sessions in reaction to recent calls for a boycott on social media. Following customer backlash, Target made the decision last week to remove certain products from its Pride Collection.

4. Ambarella Inc (NASDAQ:AMBA): Shares of the company closed 5.43% higher but lost 13.74% in extended trading after the company issued a weak second-quarter forecast. Ambarella reported first-quarter revenue of $62.14 million, which narrowly beat an estimate of $62.01 million. The company said it expects second-quarter revenue to come in between $60 million and $64 million compared to an estimate of $67.17 million.

5. Hewlett Packard Enterprise Co (NYSE:HPE): Shares of the company closed 1.17% higher on Tuesday but lost 7.86% on Wednesday. The company reported second-quarter revenue of $6.97 billion that missed an estimate of $7.31 billion. Hewlett-Packard sees third-quarter revenue in the range of $6.7 billion to $7.2 billion compared to an estimate of $7.24 billion.