As someone who works in fin and at a gameplaying level, I will say that none of my peers or superiors would say "top 5 FAANG". That would be tautology of sorts, not to mention out of date.
E.g. the football equivalent would be to say "I play for a top 20 Premiership side" while being in the Premier League era...... Quite an odd thing to say on numerous fronts.
The Premier League era of course being the MAMAA era.
However,
I guess I will just have to give you the benefit of doubt.