President Donald Trump’s Stargate foray could present a major boon for these technology companies, according to Wall Street. The $500-billion joint venture between OpenAI, Oracle and SoftBank announced earlier this week aims to beef up artificial intelligence infrastructure in the U.S. Shares of Oracle and Microsoft have rallied nearly 15% and 3%, respectively, since the start of the week. Microsoft is an investor in OpenAI. ORCL 5D mountain Oracle shares over the last five trading days Wall…