I believe wave a of 5 has completed the mini expanding diagonal pattern and managed to advance just above the minimum requirement for the fifth wave. I'm expecting wave b to retrace 50% (251) to 61.8% (242) of wave a, but that isn't a requirement; the correction can be shallow also. After some sideways price action wave c should get started with a target of 408 (ideal). At that point, the larger diagonal pattern should be complete.
EDIT: fib retracement on the chart of wave a should read: 50%-------------------------------251 61.8%---------------------------- 242