I thing @engle laid out the options pretty succinctly.Let's keep it rational people!
Nov 30th is two half trading days away and S&P could conceivably do anything regarding the inclusion plan for December. I think there's a 99.8% chance they keep it to one of the two aforementioned options, but you never know. This game is rigged after all and there are no real rules.
I bring this up not to plan for the possibility of that .2% becoming reality, but to think about what the front-runners and day traders might do to plan for it. If I'm some unimaginative asshole day trader, with zero allegiance to any stock or any understanding of their underlying value, what's my chart-based move on Friday? Well I sell obviously!
Smart traders who got in to front-run when the inclusion plan was announced are up what.....~$150 right now? I think a fair share of them won't want to risk their entire pile of gains on a bizarre S&P decision Monday, no matter how unlikely. The downside of selling is you lose maybe 2-6% of additional gains after a ho-hum decision, but you protect and lock in the 40% you're already sitting on.
This could cross more than a few minds over the next two days and we could see a sharp selloff Friday/Monday with a massive rebound Tuesday. Highly highly unlikely, but just trying to envision a rational worst case scenario that makes sense through all the champagne bubbles. I would be very careful playing with call options for this week. And maybe have some dry powder ready.
Tesla, TSLA & the Investment World: the 2019-2020 Investors' Roundtable
I think the S&P's strategy is playing out pretty much as they (and I) expected. They really did fear an infinity squeeze if the normal inclusion process was followed - current shareholders would hold, front runners/tracking funds would start buying immediately, closely followed by index funds. Throw in shorts and hedges covering and a massive volume and price spike occurs.
The long run up we’re in now allows tracking funds and shorts to get business done in a controlled manner - nice steady ramp up for a week or two, with only index funds left out until inclusion date(s). Then still probably a spike or two, but hopefully avoiding most of the positive feedback loop that would make an infinity squeeze chaotic and unpredictable.