Six steps to rewrite history.
No account required to start. Pick a date, build a portfolio, and see what happens. The whole thing takes about two minutes.
Pick a Moment in Time
Choose any date from 1970 to today. Select from 10 pre-built market events — Black Monday, the Dot-Com Crash, Lehman Brothers — or enter any custom date. The world resets to that morning.
You start with $100,000 in virtual cash and zero knowledge of what comes next.
Build Your Portfolio
Search real tickers. Buy stocks at their actual historical prices. Every trade is recorded with the exact price from that day. No hindsight, no cheating — just your instincts against history.
Marlowe Keynes, your AI advisor, offers era-appropriate guidance — but the decisions are yours.
Advance Through Time
Move forward one day, one week, or one month at a time. Watch your portfolio value shift with real market data. Read the actual news headlines from each day as history unfolds.
The interface transforms to match the era — 1980s CRT aesthetics, 1990s pixel art, 2000s Web 2.0 gloss.
Trade, Hold, or Sell
React to market movements as they happen. Sell positions to lock in gains or cut losses. Buy new stocks as opportunities emerge. Every decision shapes your final return.
Your portfolio tracks realized and unrealized gains separately — just like a real brokerage.
Measure Your Results
Compare your portfolio against the S&P 500 benchmark. See your total return, best and worst positions, and how your timing stacked up against the market.
Performance charts show your portfolio value over time alongside the benchmark.
Share and Compete
Generate a shareable link to your portfolio. Post your results on Twitter or LinkedIn. Climb the leaderboard and see how your returns compare to other time travelers.
Every shared portfolio includes a full breakdown of trades, timing, and final performance.
Ready?
No sign-up required. Free forever.