Hi I was looking for when E-Mini S&P 500 futures contract expire? (ES) and found following on google. Output from google- Contracts expire quarterly in March, June, September, and December at 9:30 a.m. EST. Expiration dates for 2020 are March 20, June 19, September 18, and December 18. Rollover dates are March 12, June 11, September 10, and December 10. Is there anything to notice when volume switch to new contract? I am new trading s&p 500, when trading CL I remember volume switch 1-2 days before; so is there something to watch for or just trade new contract after rollover?