curl --request GET \
  --url https://api.example.com/api/symbols/summary

{
  "success": true,
  "symbols": [
    {
      "symbol": "<string>",
      "total_trades": 123,
      "trading_profit_loss": 123,
      "winning_trades": 123,
      "win_rate_percentage": 123,
      "avg_profit_loss": 123,
      "avg_return_percentage": 123,
      "total_volume": 123,
      "total_dividend_payments": 123,
      "total_dividends": 123,
      "total_return": 123,
      "first_trade_date": "<string>",
      "last_trade_date": "<string>",
      "first_dividend_date": "<string>",
      "last_dividend_date": "<string>",
      "current_shares_held": 123,
      "has_open_position": true
    }
  ],
  "data_source": "<string>"
}