sleepy, somehow I still have the impression the GAAP has more impact on the street, at least in short term ( for a couple of days) until the full ramification ( the Non-GAAP) are digested. An example of that is 2012 Q4, when they released a wider than expected loss and the stock took a dive. I read the the full report and thought it is fantastic. It is everything what a growth company should be doing and all the cost issues are temporary. So I bought some shares and that was the first TSLA share I ever bought!
Kevin - I have only been following Tesla religiously for about 4 months, so maybe you are right. But for most companies, GAAP earnings are not as important as non-GAAP earnings. That is why companies provide non-GAAP earnings, and that is why Wall Street analysts only talk in non-GAAP numbers.
When it comes to Tesla, the only difference between GAAP and non-GAAP is that GAAP includes one-off items (such as the warranty liability write-off in Q1) and GAAP has an additional $15m/quarter of stock-based compensation expense.
Going forward though, there may be huge revenue and net income discrepancies between GAAP and non-GAAP due to lease accounting; especially since internationally it sounds like a higher percentage of vehicles will be sold as a lease. In my opinion, the stock will be priced according to non-GAAP earnings and not according to GAAP earnings. All of the smart money understands that cash flow is exactly the same for Tesla whether it is a sale or a lease.
I can actually argue that lease accounting is favorable for Tesla and should cause the stock to go up even more thanks to it. Since they are delaying revenue recognition, they are also delaying tax payments, which creates a deferred tax liability; and this is a good thing. Imagine if you didn't have to pay the IRS for you capital gains on TSLA until 3 years down the road even if you cashed out your shares today.
If Tesla releases earnings of $0.05 GAAP and $0.40 non-GAAP, I guarantee you that everyone will only be talking about non-GAAP number.
Now if GAAP number looks really ugly, while non-GAAP is just ok; then the GAAP number becomes much more relevant since shorts will try to run with that number.
GAAP numbers have a lot of noise in them due to one-time items, restructurings, bad revenue recognition principles (in some cases), accelerated expenses, etc.
For the long-term investor GAAP numbers are not that important. Maybe they are meaningful right around earnings release for those that bought speculative options, but that is the risk you take with options.