Some thoughts on how big market making firms (eg Jane Street, Susquehanna, Optiver) are structured. Note I have not worked at any of these firms so this is not based on any insider knowledge, just talking to people in the industry and extrapolating a bit.
This is important to realize. The way many of these firms are structured is that they have a pure MM book (keep inventory low, stay hedged, clip spreads) and prop books to express a view. The prop book can trade with the MM book at (to first approximation) mid and a lot of their
— macrocephalopod (@macrocephalopod) February 15, 2021
More from Trading
Want to master Option Selling for free?
Here are the best resources.
A thread 🧵👇
Collaborated with @niki_poojary
1. Best book of knowledge for a beginner?
Zerodha Varsity from @Nithin0dha's team is the best book for a newcomer to read and increase his basic knowledge about options, especially for the Indian markets.
Link:
2. Best Youtube channel on Options Trading?
The @tastytrade financial network. It's a foreign channel that focuses mostly on selling options.
They teach all strategies for free with their backtests.
Big on Straddle/Strangles selling.
Links:
3. Top Indian YouTube Channel for Options?
Power of Stocks - Subhasish Pani
What you'll learn:
1. How to form a trading plan.
2. How to scale an account with risk-reward in option selling.
3. Technical analysis logics you can use daily.
15
4. What are the preconditions to start option Selling:
You should know technical Analysis basics like:
- Support/Resistance
- Chart Patterns
- Candle Patterns
- Dow Theory (HH, LL)
This will help you start taking high-probability trades.
Here are the best resources.
A thread 🧵👇
Collaborated with @niki_poojary
1. Best book of knowledge for a beginner?
Zerodha Varsity from @Nithin0dha's team is the best book for a newcomer to read and increase his basic knowledge about options, especially for the Indian markets.
Link:
2. Best Youtube channel on Options Trading?
The @tastytrade financial network. It's a foreign channel that focuses mostly on selling options.
They teach all strategies for free with their backtests.
Big on Straddle/Strangles selling.
Links:
3. Top Indian YouTube Channel for Options?
Power of Stocks - Subhasish Pani
What you'll learn:
1. How to form a trading plan.
2. How to scale an account with risk-reward in option selling.
3. Technical analysis logics you can use daily.
15
15 Learnings from Power of Stocks: \U0001f9f5
— Aditya Todmal (@AdityaTodmal) January 23, 2022
Collaborated with @niki_poojary
4. What are the preconditions to start option Selling:
You should know technical Analysis basics like:
- Support/Resistance
- Chart Patterns
- Candle Patterns
- Dow Theory (HH, LL)
This will help you start taking high-probability trades.
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A brief analysis and comparison of the CSS for Twitter's PWA vs Twitter's legacy desktop website. The difference is dramatic and I'll touch on some reasons why.
Legacy site *downloads* ~630 KB CSS per theme and writing direction.
6,769 rules
9,252 selectors
16.7k declarations
3,370 unique declarations
44 media queries
36 unique colors
50 unique background colors
46 unique font sizes
39 unique z-indices
https://t.co/qyl4Bt1i5x
PWA *incrementally generates* ~30 KB CSS that handles all themes and writing directions.
735 rules
740 selectors
757 declarations
730 unique declarations
0 media queries
11 unique colors
32 unique background colors
15 unique font sizes
7 unique z-indices
https://t.co/w7oNG5KUkJ
The legacy site's CSS is what happens when hundreds of people directly write CSS over many years. Specificity wars, redundancy, a house of cards that can't be fixed. The result is extremely inefficient and error-prone styling that punishes users and developers.
The PWA's CSS is generated on-demand by a JS framework that manages styles and outputs "atomic CSS". The framework can enforce strict constraints and perform optimisations, which is why the CSS is so much smaller and safer. Style conflicts and unbounded CSS growth are avoided.
Legacy site *downloads* ~630 KB CSS per theme and writing direction.
6,769 rules
9,252 selectors
16.7k declarations
3,370 unique declarations
44 media queries
36 unique colors
50 unique background colors
46 unique font sizes
39 unique z-indices
https://t.co/qyl4Bt1i5x
PWA *incrementally generates* ~30 KB CSS that handles all themes and writing directions.
735 rules
740 selectors
757 declarations
730 unique declarations
0 media queries
11 unique colors
32 unique background colors
15 unique font sizes
7 unique z-indices
https://t.co/w7oNG5KUkJ
The legacy site's CSS is what happens when hundreds of people directly write CSS over many years. Specificity wars, redundancy, a house of cards that can't be fixed. The result is extremely inefficient and error-prone styling that punishes users and developers.
The PWA's CSS is generated on-demand by a JS framework that manages styles and outputs "atomic CSS". The framework can enforce strict constraints and perform optimisations, which is why the CSS is so much smaller and safer. Style conflicts and unbounded CSS growth are avoided.