By Stephen Culp NEW YORK (Reuters) – Wall Street advanced on Tuesday as soft economic data hinted that the Fed’s aggressive policy is taking effect, while falling benchmark Treasury yields boosted the rally’s momentum. All three major U.S. stock indexes were on track for their third session of gains, with market-leading megacaps providing the most upside muscle. The S&P 500 has reclaimed nearly 8% from the trough of its Oct. 12 close. The rally was being driven by “a combination of lower (Treasury) yields and investors returning to the zone of expecting a Fed pivot, part of which points to wha…