Nvidia (NASDAQ: NVDA) shares slipped over 1% at market open on Friday, September 26, despite Barclays upgrading NVDA’s share price target from $200 to$240 just a day earlier.The weakness from investors in the market is largely due to growing concerns over the sustainability of artificial intelligence (AI) investments and the semiconductor industry leader’s planned $100 billion partnership with OpenAI.However, it’s worth noting that other chipmakers have also been under pressure. AMD (NASDAQ: AMD), for exam ...