Market-Chart

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A web-based financial charting tool that displays candlestick charts, technical indicators, and a unique Highlight Chart mode for visualizing price ranges.

Install

# Install dependencies
pip install -r requirements.txt

Note: Ensure all dependencies are installed to run local_test.py and the data-fetching scripts.

Usage

python local_test.py

Then open url in your browser.

Development: update the ticker list

Only when changing dev/ticker-source.js, regenerate public/static/list.js with Node.js:

npm run build-tickers

Deployment

Environment Specifics

GitHub Pages + AWS Lambda (Function URL) (Serverless)

https://berochlu.github.io/market-chart/
(Requires a custom Lambda Layer for yfinance & dependencies. See instructions below.)

Automated Deployment (GitHub Actions)

This repository includes a workflow for GitHub Pages deployment:

• GitHub Pages (deploy-pages.yml): Automatically deployed on push to master.

Key Features

📊 Chart Types

• Candlestick Chart (OHLC bars)
• Highlight Chart (gradient-filled high/low range)

📈 Technical Indicators

• Ichimoku Cloud (Tenkan, Kijun, Span A/B, Chikou)
• 25-day Moving Average

⚙️ Customization

• Timeframes: 6mo / 1y / 2y / 5y / 10y / max
• Intervals: 1d / 1wk / 1mo
• Invert Mode (🔃): Flip prices to provide another view
• Highlight Mode (🌡): Switch to gradient-based high/low visualization
• Future Cloud Mode (☁️): Project Ichimoku Cloud 26 days ahead into the future

How to Use

1. Enter a Ticker Symbol

• Type in the input box (e.g., MSFT, AAPL) or select from the dropdown.

2. Adjust Settings

• Choose a timeframe and interval.

3. View Charts

• Click "📈" to render.

4. Reset

• Click the "✕" button inside the input box to clear.

Example Tickers

Preloaded symbols include: ARKK, BTC-USD, ETH-USD, SPY, QQQ, TLT, VXX

Technical Notes

• Data Source: yfinance
• Libraries: Apache ECharts, Lodash, Moment.js
• Mobile-Friendly: Responsive design for all devices

AWS Lambda Layer Setup

To run aws-lambda.py on AWS Lambda, you need to create a custom Lambda Layer containing yfinance and its dependencies (compiled for Linux environment).

Building Layer ZIP via WSL2 (Ubuntu 22.04)

This project's Layer was built using WSL2 Ubuntu 22.04. Ensure that the Python version in WSL2 (for example, Python 3.13) matches the Python runtime configured for the Lambda function.

Run the following commands in WSL2. Replace python3.13 with the Python version configured for the Lambda function.

# Create directory structure
mkdir -p lambda_layer/python
cd lambda_layer

# Install the pinned yfinance version and its dependencies
python3.13 -m pip install --target=./python "yfinance==1.5.2"

# Package into ZIP
zip -r yfinance_layer.zip python

# Copy to Windows Desktop
cp yfinance_layer.zip /mnt/c/Users/username/Desktop/

1. Upload yfinance_layer.zip as a new Lambda Layer on AWS Console.
2. Select the same Python runtime used to build the layer as the compatible runtime.
3. Attach the layer to your Lambda function.