Free on the S&P 500 · more on Premium
FinSim — practise on history, risk nothing
A simulated, paper-only sandbox. Replay real market history from a date you choose and move a simulated portfolio through it, with no real money and no real trades. The S&P 500 replay is free with a free account; Premium adds more markets and advanced orders.
What it does
- Replay real market history. Pick a start date and step through real daily bars one day at a time, or play and pause.
- Move a simulated portfolio. Buy and sell with a $100,000 simulated portfolio. Nothing connects to a brokerage and no real order is ever placed.
- More on Premium. Premium adds more markets (36 instruments), stop-loss and limit orders, and simulated options.
How to open FinSim
FinSim is open now. Sign in with your free Obsidian account and the S&P 500 replay is yours to run; your run survives a page reload. More markets and the advanced orders come with Premium. Open FinSim. See membership and pricing.
Frequently asked questions
What is FinSim?
FinSim is a simulated, paper-only research sandbox. It lets you replay real market history from a date you choose and move a simulated portfolio through it, with no real money at risk. Everything in FinSim is simulated. No trades are ever placed and no capital moves.
Is FinSim real trading?
No. FinSim is paper only. It uses real historical market data for study and practice. It does not connect to a brokerage, it never places a real order, and nothing you do in it moves real money. It is an educational simulator, not a trading account.
Is FinSim free?
The S&P 500 replay is free with a free Obsidian account. Premium adds more markets (36 instruments), stop-loss and limit orders, and simulated options. Premium is $29/mo direct from the website, or $19/mo at the member rate through the Obsidian Metrics community.
Does FinSim predict or promise returns?
No. A historical replay shows what already happened in a past period; it is not a forecast and past behaviour does not indicate future results. FinSim makes no income, yield, or return promise. It is a study tool. We are not financial advisors.