Up-again, down-again semiconductor stock Nvidia (NASDAQ: NVDA) is…up again as of 10:45 a.m. ET this morning — up 2.4%, to be precise. Simply put, because I don’t think the news surrounding Nvidia today is of the caliber needed to fuel a 2%-plus rise in stock price (which may not even sound like much, but remember — a 2% gain in a $700 billion stock works out to a $14 billion change in valuation. Item No. 1: According to news site GurusFocus.com, two separate money managers, Lynch & Associates and Alan N. Hoffman Investment Management, added Nvidia shares to their portfolios in the quarter ending Dec. 31, 2021.