headfake isn't the first flash.
usually plays out over ~15 min,
baiting plays in direction of headfake,
in this case, downward today.
then usually a strong move into close
in the opposite direction,
theoretically upward today.
because they can...
i bought open 423c when i saw the down spike
rally back above the 2pm pre-fomc level.
this has been a bread-n-butter SPY trade for me
for a couple decades.
plays out far more often than not.
key caveat:
"far more often than not"
does not mean "always." ;)
time will tell how it plays out.