Sergei Perfiliev Profile picture
Feb 7 5 tweets 1 min read
Ok, I see people started running my code on all kinds of things now - single-stocks, Bitcoin, their neighbours' mortgage...

VERY IMPORTANT:

Remember, we're trying to predict option dealers' delta hedging actions based on dealers' positions!

"DEALERS' POSITIONS" is the key! 👇
We need to know how many options they hold and hedge.

Only then we can translate that into gamma.

If we don't know their positions, all of this is meaningless.

For US indices, we're making an assumption that investors sell calls and buy puts, with dealers taking the other side
This is based on index skew, strong call overwriting flow, put protection buying etc...

It's a crude approximation, but allows us to calculate 'naive gamma'.

For single stocks and Bitcoin this assumption does not hold.
Investors do all kind of trades and we don't have these pronounced, one directional flows.

Hence, no visibility on how options dealers' book looks like.
It's only when you have a good approximation for Bitcoin options' dealers positions, you can apply the above methodology and calculate gamma exposure.

Otherwise, I wouldn't run this code on anything else, apart from major stock indices.

• • •

Missing some Tweet in this thread? You can try to force a refresh
 

Keep Current with Sergei Perfiliev

Sergei Perfiliev Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @perfiliev

Feb 3
Are you tired from constantly living in the dark, fully unaware of the current Gamma Exposure?

Are you frustrated from having to guess the Zero Gamma level ALL THE TIME?

Are you annoyed from not knowing what the f*ck all of this even means!?!

I know, I was.

👇
Hello, my name is Sergei.

And today, I'll show you how YOU can change YOUR life, once and forever!

After this 10-minute tutorial, you'll be able to take full control of your gamma needs and live the life YOU want.

Impress your boss, colleagues, friends, spouse, children, dog!
By the end of this thread, you will be able to:

• Create a simple spot gamma chart for your favourite stock index.
• Compute its total gamma exposure.
• Construct a sleek-looking gamma profile chart 😎
• Calculate a Zero Gamma level (aka Flip Gamma).

🔥 !! AND !! 🔥

👇👇👇
Read 54 tweets
Jan 21
Yesterday, many noticed that @squeezemetrics's GEX index hit an all-time low.

Lowest reading ever.

Since GEX measures gamma exposure, a low value implies the dealer's delta is less sensitive to index moves.

However, why would this be a bullish signal?
This is something I tried to understand, so here are some thoughts behind this.

Historically, a very low GEX has indeed been a short-term bullish signal.

This can be seen even from visually observing the chart on dix.sqzme.co
The low points of the GEX coincide with SPX moving higher shortly after.

Important to note is that low values also coincide with a selloff in the index shortly before.

It makes sense as we move from the positive-gamma dealer-long-call region into the negative-gamma price range.
Read 11 tweets
Jan 13
TO ALL EQUITY PMs:

YOU MAY NOT BE INTERESTED IN OPTIONS, BUT OPTIONS ARE INTERESTED IN YOU!

$SPX options make up 16% of the $SPX market cap!

Options gamma is one of the most significant structural flows within the equity markets.

Let's explore how it impacts your business 👇 Image
Options are often linked to insurance.

And many times, rightfully so.

They can help protect your portfolio when the sky is grey, and the rain washes down your hard-earned gains.

However, there's a key and vital difference.
Traditional insurance business typically uses diversification as a risk-management tool.

The exposure to any single adverse event can be hedged by insuring other adverse events that fail to materialize.

With enough uncorrelated bets, it's possible to achieve a positive return.
Read 37 tweets
Jan 5
Wait, wait! Hold on!

Yes, #JHEQX. Again. I know.

But sorry, over the last few days I was very... busy... 🍷🎄

And looking into the #JHEQX roll, I can't say that I fully understand it.

(and based on the discussions, it looks like I'm not alone...)

Let's see what happened 👇
The trade sparked many heated conversations on Twitter, with everyone trying to understand what exactly will be its impact.

Some argued that there's a huge delta to buy, which might move the markets.

Others claimed that it's all been priced in already, and no money can be made.
What I want to understand is:

• Was there a huge delta to buy?
• If there was, why was the market down on 31 Dec?
• If there wasn't, why?
• If it's priced in, then how?
• What mechanics allowed #JHEQX to alleviate the market impact?

Read 30 tweets
Nov 26, 2021
The media seems to attribute the current sell-off to new Covid variant.

However, I'm curious how much of the sell-off is actually due to Covid and how much is due to a less dovish Fed, as there were news that Fed might double its tapering and raise rates quicker than expected.
If the market is indeed falling due to a new variant, in my opinion, the impact might be limited.

Even if this variant is more serious than earlier ones, it's very unlikely it will have the same worldwide economic impact as the original coronavirus pandemic in March 2020.
The world has been living with Covid and we all know the drill by now.

If anything, an argument can be made that Covid is good for stocks, as $SPX more than doubled since its Covid lows.

A new variant can give Fed an excuse to carry on with QE and keep the BTFD mentality alive.
Read 4 tweets
Nov 17, 2021
Looking at Nokia, I noticed there's a non-trivial open interest sitting at January 10-strike call:

327,961 contracts.

This is the largest OI across Nokia options.

With $NOK trading at $5.68, the option is quite deep OTM, and its gamma impact is muted...

Unless... Image
Unless $NOK rises and wakes up the sleeping beauty 🙂

How many shares would market makers need to buy to delta hedge this option?

Let's completely ignore any call overwriting and assume that OI is held long by investors and short by market-makers (a bold assumption, I know).
If dealers are short this option, they need to buy $NOK in order to delta hedge.

At the moment, this option's delta is ~0.05.

If (and only if) on 21 Jan 2022, $NOK closes just above $10, its delta will become 1.
Read 20 tweets

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Don't want to be a Premium member but still want to support us?

Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal

Or Donate anonymously using crypto!

Ethereum

0xfe58350B80634f60Fa6Dc149a72b4DFbc17D341E copy

Bitcoin

3ATGMxNzCUFzxpMCHL5sWSt4DVtS8UqXpi copy

Thank you for your support!

:(