Sunday, September 16, 2018

The joy of theta! Your virtual $200000 account; a /ZN iron butterfly

Options trade characteristics are referred to by Greek letters. Delta is the ratio between the option's price movement and the underlying's price movement. Vega is the movement of an option price when volatility changes. But my favorite is theta:

Theta represents the amount by which an option (or option spread) decays over one day. So if your theta value is 400, then you make $400 a day in profits as your option positions expire. (In contrast, you could have a theta value of -400, where you lose $400 per day ...)

This plan expects option positions to expire by 1/2 the amount in half the time: 10.5 or so days for a 20-day trade. But this past week the trades were running ahead of schedule, getting to 50% on Monday, Tuesday and Thursday ... that's 10, 8, and 7 days per trade.

Your virtual $200000 account made only about $1400 this past week, as volatility's completely washed out of the S&P 500, what with its being right near its record high, again ...

Tastytrade had a segment on Friday that caught my attention on volatility in Treasury futures.  With the extra leverage available on futures, this gives a couple of attractive trades:


This is an Iron Butterfly:

... which I've traded successfully in the past. The /ZN trade shown isn't too big: $1231 max risk (and only 1/4 of that in initial margin) ... /ZB is similar but about twice as big.

These don't have weekly options so I would have to wait for about 3 weeks to get them on with the 21 days of expiration I'm using for everything else. But an Iron Fly (Tastytrade's name for this kind of trade) works best when you take only 1/4 of the credit you get, not 1/2. Thus the options should expire in 1/4 of the time: 10 days ... just like the 21 day SPX trade.

So I just now put it on Sunday 3:56pm PDT! We'll see ...

As for our friend Theta, it works over the weekend too! I put on a "good until cancelled" order just after I put the trade on ... the oldest trade I have on is 12 days until expiration (11 by tomorrow) and was $1.33 on Friday at the close trying to get to $1.00. I won't be surprised at all for it to be closed out at $1.00 early Monday!

Results so far:


ExpirationUnderlyingLong putShort putShort callLong callCredit ReceivedResult
07/16/2018/SPX2680273028102860$3.60Won 100%
07/18/2018/SPX2700275028202870$3.95Won 100%
07/20/2018/SPX2700275028352885$2.40Won 100%
07/20/2018 (a.m.)/NDX7260731074107460$5.99Won 100%
07/25/2018SPX2705275528352885$2.40lost 16% of amount at risk
07/27/2018SPX2695274528252875$3.50Won 100%
07/30/2018SPX2720277028502900$2.60Won 100%
08/01/2018SPX2730278028702920$2.15Won 100%
08/03/2018CMG430450490510$1.01Won 100%
08/03/2018AMZN1692.51722.51887.51917.5$2.60Won 100%
08/06/2018SPX2720277028602910$2.05Won 100%
08/08/2018SPX2740279028602910$2.05Won 100%
08/10/2018RUT1610164017101740$1.53Won 100%
08/10/2018AMZN1737.501767.5018851915$1.79Lost about 30%
08/13/2018SPX2760281028852935$1.65Won
08/15/2018SPX2760281028602910$3.80Won
08/17/2018 (a.m.)NDX7310736074607510$4.42Lost 7.07%
08/22/2018SPX2720277028602910$3.95Won 70% of possible
08/24/2018SPX2745279528802930$3.30Won 100%
08/24/2018RUT1600165017151765$2.16Lost 17.7%
08/27/2018SPX2760281028902940$2.45Lost 23%
08/29/2018SPX2770282028902940$2.95Lost 47%
08/31/2018SPX2795284529252975$2.55Won 100%%
09/21/2018SPX2750278029803910$2.45Won 50%
09/24/2018SPX2750277029702990$1.85Won 50%
09/26/2018SPX2725273529552965$1.15Won 52.7%
09/28/2018SPX2700272029552975$2.05(open)
10/01/2018SPX2705273529502980$2.60(open)
10/03/2018SPX2710274029502980$2.60(open)
10/05/2018SPX2765278529652985$2.10(open)
10/26/2018/ZN117.51191191210"56(open)

More next week!

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