Portfolio

Investment portfolio manager. Add and remove holdings, list positions, analyze allocation weights, generate rebalance suggestions against target weights, and calculate performance returns over configurable time periods. All data is stored locally in JSON files — no external API calls required.

Commands

Data Storage

All data is stored locally in ~/.portfolio/:

• - holdings.json — Array of current positions, each with ticker, quantity, avg_price, and INLINECODE21
• transactions.json — Array of all buy/sell transactions with type, ticker, quantity, price, and INLINECODE27

Both files are auto-created as empty JSON arrays ([]) on first use. The add command automatically merges duplicate tickers by recalculating the weighted average price.

Requirements

• - bash (4.0+)
• python3 (standard library only — json, os, sys, datetime)
• No external APIs, no pip packages, no network access needed

When to Use

1. 1. Tracking purchases — When you buy stocks, ETFs, or crypto and want to record ticker, quantity, and price with automatic cost-basis averaging
2. Reviewing holdings — When you need a quick snapshot of your current portfolio in table, JSON, or CSV format
3. Allocation analysis — When you want to see how your portfolio is weighted across assets, with percentage breakdowns and visual bars
4. Rebalancing — When you need buy/sell recommendations to reach target allocation weights (e.g., AAPL:40,GOOG:30,BTC:30), with configurable drift thresholds
5. Performance tracking — When you want to calculate total invested, total sold, current value, and gain/loss percentage over a specific time period (1 day to all-time)

Examples

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How It Works

The script uses embedded Python (standard library only) for JSON manipulation and calculations. Bash handles argument parsing and dispatches to the appropriate Python block. When you add a position that already exists, the script recalculates the weighted average price automatically. The rebalance command compares current allocation percentages against your targets and flags any drift exceeding the threshold, recommending dollar amounts to buy or sell. The performance command filters transactions by date range and computes total invested, total sold, current portfolio value, and the resulting gain/loss.

Output

All commands print to stdout. Use --format json for machine-readable output where supported. Redirect with standard shell operators:

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