Nvidia Corp (NVDA) stock has risen nicely since its earnings results on Nov. 21. Based on our model forecast, NVDA still has room to rise. This means existing shareholders can sell short OTM puts for extra income. I discussed the company’s potential upside in my Nov. 26 Barchart article, “Nvidia’s Blowout Quarterly Results Imply NVDA Stock Could Be Worth Over $700 Per Share.” This was based on the company’s very powerful free cash flow (FCF) and its high FCF margins. Why NVDA Stock Could Still Move HigherFor example, Nvidia reported that its FCF was $7 billion on $18.1 billion in revenue durin…