We saw a 2/3rd's cut in the SP only once, following the Fremont shoot dune. So a $600/$1,800 is off the table IMHO if all that were to occur is a small Ms. on GAAP profitability.
BTW, we only saw a 1/2 cut to the SP ($360>$180) in 2019Q2 after the big loss reported in Q1 results. That scenario is also not going to reoccur in 2020Q2. There's even rumors of the S&P Committee adding TSLA to the Index no matter what the results are for Q2, just to release the pressure of this extended game of musical chairs we've been engaged in for the past 3 years.
That announcement would instantly kill any drop in SP from a slightly negative Q2 report, and unleash the POLKA music! ♫
But as you rightly stated,
Q2 will be GAAP profitable so this is all academic.
Cheers!
P.S. I'm 100% All-in with Equity; 0% Margin; 0 Hedges held heading into earnings and the S&P.