The ES Price was essentially range bound today hanging out close to TAOST Intraday Balance Zone (and TAOST Neutral Zone) all day.
The tight price action is likely a function of traders anticipating $AAPL results after the close today... And the fact that today was the first day (of 2) of the FOMC Meeting. The Fed will deliver their rate decision tomorrow afternoon... along with comment about the current economic climate.
That should lead to a bit more wide ranging volatility tomorrow.
Traders apparently like what $AAPL had to say... the stock is +5.64% after hours.