US STOCKS-Wall St marches ahead as Britain votes on EU
* Oil, sterling surge; gold falls
* Micron biggest gainer among S&P companies
* Macy's up 4.7 pct on CEO transition plans
* Indexes up: Dow 0.74 pct, S&P 0.72 pct, Nasdaq 0.78 pct (Adds details, comment, updates prices)
By Yashaswini Swamynathan
June 23 (Reuters) - The three major U.S. stock indexes recorded their biggest percentage gains in a month on Thursday as Britain seemed to swing towards remaining in the European Union, a scenario that would avert a possible financial crisis.
Markets across the globe have been rattled over the past two weeks as investors speculated about the consequences of Britain's exit from the European union, including the unraveling of the bloc.
The "Remain" camp has found 52 percent favor, according to an Ipsos MORI poll conducted on Tuesday and Wednesday. The final result of the referendum will be known on Friday.
U.S. markets also took solace in Fed Chair Janet Yellen's two-day testimony this week when she expressed optimism about the economy and downplayed the chances of a recession this year. Continuación...