While investors, traders and forecasters may be on the fence as to whether the Fed pulls the trigger this week on the first U.S. interest rate hike in nearly a decade, Wall Street's "smart money" is decisive on one thing: market volatility will linger. Heading into Thursday's potentially momentous decision on interest rates from the Federal Open Market Committee, the Federal Reserve's monetary policy-setting panel, speculative positions in CBOE VIX index (.VIX) futures are the most net long on record. To this crowd of hedge funds and other big speculators, it really doesn't matter what the Fed...