The S&P 500 marked a follow-through day Wednesday after the Fed raised interest rates by a quarter point, the first increase since June 2006. The S&P 500 and Nasdaq rallied 1.5%. The Dow rose 1.3% and the IBD 50 added 1.1%. Market breadth was solid, with advancing stocks beating decliners by 9 to 2 on the NYSE. On the Nasdaq, winners topped losers by nearly 3 to 1.