US STOCKS-Wall St marches ahead as Brexit seen unlikely
* Oil, sterling surge; gold falls
* Micron biggest gainer among S&P companies
* Macy's up 2.2 pct on CEO transition plans
* Indexes up: Dow 0.93 pct, S&P 0.97 pct, Nasdaq 1.21 pct (Updates to early afternoon)
By Yashaswini Swamynathan
June 23 (Reuters) - The three major U.S. stock indexes rose about 1 percent each to record their biggest percentage gains in a month as investors grew confident that Britain would choose to remain in the European Union in Thursday's referendum.
Markets across the globe have been rattled over the past two weeks as investors speculated about the consequences of Britain's exit, 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...