Tesla’s bullish rampage looks like it could hit 305.55 on the next big thrust.  Accordingly, I’ll recommend bidding 1.54 for the October 3/Sep 5  300 calendar spread 8 times, good till Friday. You should adjust your bid by 0.05 up or down for every 50 cents the stock moves above or below 262.50.  Please note as well that a pullback to the red line, a Hidden Pivot midpoint at 241.39, should be regarded as a buying opportunity, especially the calendar spread (albeit it at a much lower price). _______ UPDATE (August 26, 11:43 p.m. EDT):  Volatility has gotten crushed, and so you’re doing well if you buy the spread now for 1.34 (with TSLA at 262.00).  Since the spread price can fluctuate wildly from one day to the next, I’ll suggest that you recalibrate it hourly if you’re a buyer, using a spread price midway between bid and offer as “fair value.”  It has a delta value of around 9 at the moment, so you should adjust your bid for the spread by 0.01 for each 0.11 move in the underlying. _______ UPDATE (August 28, 9:45 p.m.):  With the Sep 5 calls melting away, the fair price for our spread must be recalculated several times daily by anyone seeking to buy it. It was a decent buy at Thursday’s close for around 1.20, but it could shed yet another 0.15-0.25 as the week ends.