Best I can figure, worst will be those options expire worthless next Friday, or, if Tesla keeps zooming up by say Wed or Thurs, the buyer will be banking serious cash?
I can give you the formula of the exact top: When the last investor with common sense gives up on the idea that it is nuts that price will go up based on valuation and that it needs to come down. When they give up on that notion because markets stills creeps up and then say to them self: I have enough of it, this market goes to the moon, I'm going to join the buyers. That moment and exact that moment will be the top in this market.
If Tsla manages 1544 today, comes September 20th - 23rd it could well break 2k. A stretch, but it's Tesla after all.