Wave 3 completed yesterday and Wave 4 started today. According to the Elliott Wave Principle (EWP), Wave 4 will most likely retrace Wave 3 by the Fibonacci ratio of 38.2%. However if you look at the chart, this will mean that Wave 4 will get into the territory of Wave 1, which breaks a rule in EWP. Thus it is likely that Wave 4 will fall to the other Fibonacci ratio of 23.6% as shown in the chart, which is at about 3234. If indeed Wave 4 falls below 3216.87 (the top of Wave 1), the wave count will have to be revised.
If you are long in stocks, you may wish to lock in profits by selling partially, or you may sit through the correction for more upside later.