US stocks are on their longest winning streak in 2 years – but the Fed and an earnings slowdown still linger as threats, analysts warn

• Stocks have been on a tear since late October, after a rough couple of months.
• The S&P 500 and the Nasdaq Composite indices have notched their longest winning streaks in two years.
• Some on Wall Street think the rally can last – but others are still fretting about a potential correction.

Stocks have been on a tear since the tail-end of spooky season. Now, Wall Street is wondering whether the rally can last.