(This is CNBC Pro’s live coverage of Wednesday’s analyst calls and Wall Street chatter. Please refresh every 20-30 minutes to view the latest posts.) An artificial intelligence play and an aluminum products maker were among the stocks being talked about Wednesday. Barclays downgraded Super Micro Computer to equal weight from overweight. Meanwhile, Morgan Stanley upgraded Ball Corp., calling for more than 20% upside. Check out the latest calls and chatter below. All times ET. 5:45 a.m.: Jefferies initiates GE Vernova as top pick within clean energy sector GE Vernova’s conservative guidance and potential earnings upside could give the stock a leg up versus its peers, according to Jefferies. The company initiated its coverage of the sustainable energy company with a buy rating. Analyst Julien Dumoulin-Smith’s $261 price target implies a 36% upside from Tuesday’s close. Dumoulin-Smith said Vernova was his top pick in the clean energy sector, “ironically due to the non-renewable gas biz.” The analyst also expects the company’s estimates to increase as the outlook for all segments across the board improves. “The combination of conservative targets set with the General Electric spin-off met the good fortune of baseload power demand surging to meet data center load. GEV is set to benefit from higher volumes and higher margins, a rare combination but visible due to the oligopoly nature of many of its U.S. markets,” he wrote. Specifically, Dumoulin-Smith anticipates Vernova’s EBITDA to triple from 2024 to 2028. In an effort to preserve capital discipline, the company could also initiate a “modest dividend” and share buybacks going forward. — Lisa Kailai Han 5:41 a.m.: Barclays downgrades Super Micro Computer Super Micro Computer’s competitors are catching up fast, according to Barclays. The bank downgraded shares of the data storage company to equal weight from overweight. Analyst George Wang also lowered his price target to $438 from $693. This updated forecast is now less than 1% below where the stock closed on Tuesday. Wang cited an overall more “cautious view” as a catalyst for the change. For instance, he pointed to weak AI server margins and a lack of visibility in forward gross margins. “Lower GM should compress P/E multiples,” he wrote. “Shares are likely in the penalty box until there are more proof points of rising GMs.” Meanwhile, Super Micro has been losing market share to its competitors such as Dell, resulting in the company lowering its pricing and subsequently putting even more pressure on margins going forward, according to the analyst. The company also has a history of a lack of transparency with its investors, which could result in further pushback. “The 10-k filing delay SMCI issued in late August also raises some red flags – investors may choose to derisk until we get clarity and definitive findings from the internal control review, particularly given SMCI’s past history of getting delisted from Nasdaq in 2018 and the SEC charges in 2020,” Wang said. “In the interim, Dell could take share from SMCI, or NVDA could give more allocation to competitors, risking the long-standing relationship between the two companies (SMCI and NVDA).” Super Micro Computer shares are up more than 55% year to date. However, they are more than 64% below their 52-week high. SMCI YTD mountain SMCI year to date — Lisa Kailai Han 5:41 a.m.: Morgan Stanley upgrades Ball Corp. The future is bright for Ball Corp. , according to Morgan Stanley. Analyst Stefan Diaz upgraded the aluminum products maker to overweight from equal weight. His price target of $78, up from $69, implies upside of 22% from Tuesday’s close. Shares are up more than 11% year to date. However, they’re 10.4% below their 52-week high reached in April. BALL YTD mountain BALL year to date “We see an attractive buying opportunity,” the analyst said. “We believe investors are overly focused on near-term North American volume underperformance vs. peers and are under-appreciating the company’s ability to grow earnings into the medium term.” “BALL’s low leverage supports its industry leading shareholder return outlook. … Given this backdrop, we see an attractive bull-to-bear skew,” Diaz added. — Fred Imbert