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Marco, go to ToS, Trade Tab, Today's Options Statistics Drop down tab. It provides alot of useful information including current IV percentile.

This is a stock that invokes religous fervour. With a 15 bn Market cap it basically makes batteries on wheels which it produces at a loss. It sells these based on upon the right to drive in the bus lane and federal tax credits. I think it is a fair bet to say that it is unlikely to be taken over by Warren Buffet anytime soon. It has gone up like a skyrocket and will probably eventually come down like a stick. However, be very careful as it is often has incredibly high levels of short interest, historically up to 40 days , so it spikes on well orchestrated short squeezes usually precipitated by a series of +ve announcements . The IV is huge (and real) but my major concern in building sensible strategy is the bid/ask spread on the options which seems often to reflect the IV. i wouldnt compare this to AAPL which is way more mature, this is akin to a biotech....

TSLA is very volatile; http://www.ivolatility.com/options.j?ticker=TSLA:NASDAQ&R=1&period=12&chart=2&vct= Hi, IV is high because HV is very high. I tried to short vol after TSLA's vol didn't dip after last earnings but instead spiked even higher, The reason for elevated vol. is a lot of controversy surrounding how much the company is worth; supporters think TSLA is going to be the next AAPL and pushing it to higher valuation while the value investors point that bulk of their profits comes from not even selling cars but trading carbon emission credits. Goldman gave it a low target price significantly lower than the current market price, but the market just seems to shrug it off, Normally I don't care about the highest IV, but instead the highest discrepancy of IV over HV: https://www.interactivebrokers.com/en/?f=daily_analysis&ib_entity=llc Pick the 2nd tab: 'Implied Vol. vs Hist Vol', Best, PC

Until I'm DITM on the longs (which we're no where NEAR right now), I will typically roll at least 7-8 days before -- I do that to again reduce the risk of loss on the shorts in a declining market. The counter argument to that is, by selling a week early, I actually am sacrificing some extrinsic value/time decay since that decays faster, the closer to expiration. But here's how I look at it -- if the market goes down, I lose less on the shorts because of delta and time value, while still earning that extrinsic value. On the other hand, if the market goes up, then, while I don't capture as much extrinsic value, I earn EXTRA intrinsic value, which more than offsets it -- it's worked like a charm so far.