10 mistakes in my 14 years of trading as an option seller 🧵

Understanding HIGH & LOW VIX

VIX at 16: If you check today's IV behaviour, they were not spiking much even with decent delta move in BNF. The movement was subtle, giving some time to adjust. So someone having good adjustment mechanism can stay in the game longer.

1/

VIX at 20: The same delta move will be more fierce, coupled with rise in premiums. When premiums rise with movement, then the adjustment cost increases exponentially. The premiums can fall back at EOD, but the damage is done if caught in the spike.

2/

After talking to few traders, their backtest result was in favor of high VIX of 2020, rather than 2017-19. The key flaw in the backtest were the adjustments which are not easy to calculate. Combination of high theta & fixed SL during high VIX, the IV crush is cashed at EOD.

3/

Neutral option sellers who don't adjust & have fixed SL on a static straddle will not be able to benefit highly in low VIX. The straddle which moves away from ATM will increase no matter what. But if we keep on rolling our strikes, then we get good realisation of theta.

4/

I have made majority of my profits in option selling when VIX was at 13-15, mostly just relying on my adjustments. Since 2020 with high VIX, adjustments stopped working because of increase in the frequency of delta + IV spike combos & so had to shift to directional trading.

5/

THREAD ON DELTA (The most important GREEK)

Many traders don't indulge in understanding GREEKS because they think they are very complicated.

There are 4 primary greeks:

Delta
Gamma
Theta
Vega

In my experience, understanding DELTA is enough to take benefit of greeks.(1/n)

Delta measures the rate of change of options price based on the directional movement of the underlying.

So this means we can know in advance (theoretically) how much an option will move with the underlying & so we can prepare our strategies accordingly. (2/n)

Value of delta varies between 0 & 1 for calls and -1 & 0 for puts. This figure tells how much an option price will change, when the underlying moves 1 point. So example a delta of .2 of call indicates that for every 1 point change in the underlying, the price will move .2 (3/n)

For option writers who want to trade in neutral strategies like straddle, strangle, ratios, calendar etc, delta can be very helpful. So be it any complex strategy, knowing the NET DELTA can give you an idea of how your strategy will perform in different scenarios. (4/n)

Net delta is just the sum of the deltas of all the bull options (call+ & put-) minus the bear options (call- & put+).

So if we can track this, we will always be in the know of how much exposed our position is. It makes it easier then to adjust our position. (5/n)

FINDING EDGE IN OPTIONS

24/08/15: Nifty gap down 250 points & another 250 after that. Previous few months return gone, but since I'm quick to take my losses, was saved from ruin. Before that my only edge in option selling was adjustments & my forever edge of following PA. (1/n)

I soon realised that theta decay with sound adjustments is not an edge, which i earlier thought was & which gave me good returns over the years. After that i went deeper in understanding volatility behaviour, how/where it manifests & all the discrepancies in option chain. (2/n)

With finding edge in logistics i mean how to keep the greeks in check, SL in place & optimum ways of adjustments with minimum slippages. So the main aim here is to write theta without following vol behaviour & having any actual knowledge of what's going on in the markets. (3/n)

A dedicated trader can learn all this in few years & it is something which is 'obvious' to become successful. But majority can't reach this level, as this also requires consistent hustle in live markets. All the seminar/webinar business teaches you till this level only.(4/n)

If you get passed this level though, the real work starts, when you have to find your real edge. This can't be taught in a webinar. It needs serious introspection of your trading skills, psychology & strategies in use, which ultimately allow you to book excellent profits. (5/n)

My previous b'day which fell on expiry day was in 2010. On that day Nifty straddle opened at 45. Day range of nifty was around 30pts :)

(High 5415, Low 5380)

At that time:

•Didn't know the word Straddle though i used to trade them regularly
•Greeks existence wasn't known

•Adjustments felt like a superpower
•Everyday theta decay was a birth right
•Any strategy thought off felt like a personal invention
•Listening to people warning about unlimited loss in option selling was normal
•Making unlimited gain in long straddle seemed a possibility

•Volumes & Oi were closely tracked
•Overnight positions without hedge was a normal routine

All the above points have been changed over the years. But the underlying market psychology & following the price action still remains the same.

Thank you all for the warm wishes 🙏

AN ESSENTIAL THREAD ON OPTION ADJUSTMENTS

Adjustments can be done in variety of ways & depends totally at the discretion of the trader. To get a clear mind we need to know the following:

1) What to follow,
2) How to make the adjustment,
3) When to make the adjustment. (1/5)

1) We need a way to measure the imbalance created by a delta move in an option strategy. We can measure through premiums, distance from index or delta of greeks (i personally use delta). So basically whatever way of measure we use, both sides should be equal in it. (2/5)

2) Adjustment can either be done by selling extra quantity of profitable side, buying the quantity of losing side or shifting both the sides. I personally shift the sides because with extra quantities our Gamma gets imbalanced & the risk increases if market reverses. (3/5)

3) While the first 2pts are objective, when to make an adjustment is totally subjective. It can be fine tuned through experience. It also depends upon what strategy u are using. For a short strangle the adjustment required is faster than a ratio spread or an IC. (4/5)

Straddle/strangle require faster adjustments because they are more vulnerable to delta or IV spike. Any other strategies like ratio spreads, ironfly, butterfly have some bought option, which can negate the spikes for a while. So we need a defined system as to WHEN to adjust.(5/n)

#Knowledge
#Options
Ever wondered y gamma is the enemy of straddle / strangle sellers and what it means?

Presume readers are aware of option Greeks meaning...

To understand , first ...

Relationship between delta, gamma, theta and option premium.
....

....

Theta + (int Rate x Underlying price x Delta) + ( 0.5 x variance of underlying x Underlying price x Underlying Price x Gamma ) = Int rate x Option premium.

Strangle and straddles are delta neutral setup;For a delta neutral setup, the second term becomes zero; Hence,
...

....

Theta +
(0.5 x variance of UL x UL price x Underlying price x Gamma)
= Int rate x option premium

Straddle and strangles have typically zero delta at initiation; they also have positive theta, meaning they gain over time assuming other components of option r constant ..

...
In a delta neutral portfolio, if theta is largely +ve , Gamma will be -ve by a large extent to satisfy the above relation mathematically, which means that as expiry nears the strangles and straddles will have large -ve gamma; This is wat u see traders telling gamma effect.

Why we sold only CE's today ?

A small 🧵

Collaborated with @AdityaTodmal

• BNF reversed from 32155 (low made on Mar'8)

• One side rally to butcher the CE writers

• Gap up opening by ~1300 points

• From Mar'8 low till today open ~2800 point rally

• 2800 point rally in just 1.5days

• Trend on the larger TF still bearish

• Due to election results we decided no to carry any overnight positions

• Selling PE on the back of 2800 point rally would have been disastrous due to unfavorable R/R

• So we were very clear to short only CE's

• But then need to follow the trend

• We decided to short CE at the break of first 5min candle

• By 9.45 it started to reverse

• Spotted M pattern at the resistance and started shorting CE's thereafter i.e. post 12.12 hours