Everyone seems to think the drop is about results. I think at least part of it is concern about Tesla walking away from 40 % of their depositors, in exchange for money now.
For me, a late reserver trying to help Tesla with supplier leverage, the short range push to 2019 rolled me to mid 2018 AWD, with hopes of a base interior and short range battery.
If the late promise of the short range option sticks, and is not just a milking operation to move those who will move to a higher priced car, people think that Tesla could lose 40% of their depositors forever (or until battery prices fall).
There are a lot of individual investors in the early line for whom a $50,000 car will not work. They have done the math, even with the tax credit.
Pushing that $35K car past the credit pushed that car out of their future.
Maybe Elon will decide that he does want to do what it takes to earn their business when his incentive plan changes.
My hope, or expectation, is that it is a milking operation.
I would estimate that 35% of the TESLA stock price is based on goodwill. So this "smart" accounting move will drive the stock price down toward $227.
The question is:
"Will Elon recognize his hubris fast enough to catch it?"