Prior price structure support, long-term trend line support, and 141.4 fib extension.
Buy zone: 5900-5500.
Buy strategy: Slowly average in; depending on momentum of selloff. If fast selloff: Wait to buy a larger percentage towards bottom, and vice versa.
Possible bounce from buy zone back up the 100 fib line to complete a pattern mirroring the prior price action before the Dec run up (represented by the yellow triangles), then down to test the 161.8 extension and prior price structure support there.