Real-Time Trading Engine

A high-performance C++ Trading Engine with Order Matching, Market Depth Visualization, FIFO Execution Logic, Trade History Tracking, and Real-Time Dashboard built using Qt.

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Features

Core Trading Engine

• Limit Buy Orders
• Limit Sell Orders
• Market Buy Orders
• Market Sell Orders
• FIFO Price-Time Priority Matching
• Partial Fill Handling
• Order Book Management
• Trade Execution History
• Best Bid / Best Ask Calculation
• Spread Calculation
• Position Tracking
• Average Price Tracking
• PnL Tracking

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Dashboard Features

• Real-Time Order Book
• Buy Orders Panel
• Sell Orders Panel
• Market Depth View
• Trade History View
• Engine Logs
• Execution Latency Display

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Architecture

User Interface (Qt)
        |
        v
Order Entry Layer
        |
        v
Matching Engine
        |
        v
Order Book
        |
        v
Trade Execution

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Technologies Used

• C++
• STL
• Qt Framework
• CMake
• Git
• GitHub

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Screenshots

Dashboard

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FIFO Order Matching

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Market Depth

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Market Order Execution

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Project Structure

src/
│
├── engine/
│   ├── MatchingEngine.h
│   ├── OrderBook.h
│   ├── Trade.h
│   └── Comparators.h
│
├── models/
│   └── Order.h
│
└── main.cpp

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Build Instructions

mkdir build
cd build

cmake ..
cmake --build .

./app

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Future Enhancements

• Socket-Based Market Data Feed
• Multi-Client Trading Simulation
• Portfolio Management
• Risk Management Module
• Persistent Database Storage
• REST API Integration

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Author

Kunal Thakare

C++ Developer | Trading Systems Enthusiast