Shadowfolio Backtest

Backtest & track your strategy

Shadowfolio tests your own investing strategy, described in plain English. It turns your words into exact rules, asks for anything you left open (what to trade, when to buy, when to sell, how often to rebalance, how to size positions), and backtests them over the last 12 months of end-of-day prices for US stocks and ETFs.

What you can ask

Backtest holding SPY only while it is above its 200-day average, otherwise BIL
Example path

MCP connector

Server URL: https://shadowfolio.ambientapp.ai/mcp
Login: None
Protocol: MCP 2025-11-25
Instructions: Shadowfolio tests an investing strategy the user describes: it turns the user's words into explicit rules, backtests them over the last 12 months of US end-of-day prices against a benchmark and, if the user saves the strategy, tracks it daily from that day as a hypothetical shadow portfolio. It places no trades and gives no investment advice: it doesn't pick, suggest or rank securities or strategies, and its results hold no opinion on a strategy and no forecast. Strategy fields come from the user's own words. When the user hasn't said what to trade, when to buy, when to sell, how often to rebalance or how to size positions, lists those open questions, each with its default, short enough for one message. Backtest and tracking figures come from , and , computed on stored daily closes. Each result's text ends with a summary suitable to show the user, with the caveats that apply.

Tools

Reads data5

Changes data2

Deletes or can't be undone2

Skills

1 in the ChatGPT listing

MCP connector

Server URL

https://shadowfolio.ambientapp.ai/mcp

None

Protocol

MCP 2025-11-25

Instructions

Shadowfolio tests an investing strategy the user describes: it turns the user's words into explicit rules, backtests them over the last 12 months of US end-of-day prices against a benchmark and, if the user saves the strategy, tracks it daily from that day as a hypothetical shadow portfolio. It places no trades and gives no investment advice: it doesn't pick, suggest or rank securities or strategies, and its results hold no opinion on a strategy and no forecast. Strategy fields come from the user's own words. When the user hasn't said what to trade, when to buy, when to sell, how often to rebalance or how to size positions, lists those open questions, each with its default, short enough for one message. Backtest and tracking figures come from , and , computed on stored daily closes. Each result's text ends with a summary suitable to show the user, with the caveats that apply.

Skills

1 in the ChatGPT listing