guides

Guide: storage

To persist your data and settings across sessions the app uses a browser's local storage mechanism. It's similar to cookies but without any information transfer through HTTP requests, it means that this information never leaves your browser in any way. I often think about adding a feature to sync the saved data between different browsers and devices, but it would require an authorization system, and I personally don't like when basically every site in the Internet requires you to sign up. Probably, neither do you, but may be one day.…

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Guide: underlying

Initially, underlying module of the /risk page looks like this. Settings are open and allow you to choose a stock symbol and quotes provider. Quotes As a quotes provider, Google Finance is used by default (e.g. when you just hit Enter after typing the symbol), because it requires less quotes preprocessing on server and therefore works considerably faster. Some symbols are not served by a particular provider (e.g. you can't get SPY quotes from Google). In that case you'll see an error message, just click another provider's button.…

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Guide: risk page

If you open the Option Toolbox without any parameters, you'll be redirected to the /risk page, which initially looks like this. Main section of this page includes (I'll create a separate blog post to cover every block in details later): Underlying block: choose an underlying asset and data provider here, get a price & volume chart, view and manage your recent symbols. Risk block: get a PnL chart of your strategy, alter a what-if scenario, toggle an automatic IV prediction algorithm. Volatility block: shows a 2D chart of the ATM…

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Guide: profit page

If you navigate to the /profit page of the Option Toolbox, you'll see that picture. This page is intended to provide a Monte Carlo simulation tool, which can help you to understand what your chances as a trader are given the statistics of your trades. First of all, open the settings and enter your data: Bet percent: how much capital do you risk in every trade (the optimal value is calculated automatically using the Kelly criterion when you update other parameters). Profit/loss ratio: average profit divided by an average…

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Guide: general UI

Let's examine the basic layout of the Option Toolbox by the example of the /risk page, which initially looks like this. Header and footer The layout consists from the 3 parts: header, content and footer. Content reloads on every page, but header and footer remains the same. A blog has its own layout model. Header of the app includes: Title and current version (appears when you hover the title, version numbers follow the semver guide). Links to the inner pages and a blog (which is actually a different app, hosted…

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