Paper trade your strategy before a dollar is at risk.
Periscøpe runs your Python strategy on a live market feed with simulated fills. You watch it behave in real time, seeing orders, fills, positions, and logs, with no capital at risk. It's the same code you backtested, and the same code you'll run live.
Real-time behavior, no capital at risk.
Live feed, simulated fills
Your strategy reacts to real-time market data, but orders fill against a simulator. Real timing, real data, no money on the line.
Same code as backtest
Paper runs the exact strategy version you backtested. Promoting changes the data feed, not your code.
Watch it in real time
Orders, fills, positions, ledger, and logs update as the run executes, so you see how the system behaves, not just a final number.
Buying power enforced
The risk engine checks buying power and rejects orders that don't fit, the same way it does in backtest.
Move a backtest to paper in one step.
Pick Paper as the run mode and launch. The strategy version that ran your backtest now runs on a live feed, with the same code, the same parameters, and a simulated broker.
- Choose Backtest, Paper, or Live per run
- Same strategy version across modes
- Live data feed, simulated fills
- No parallel codebase to maintain
Every paper run is a first-class record.
Positions, orders, fills, ledger, and a classified issue feed for the run. Open it while it runs or after it stops, and export the data.
- Positions, fills, and P&L as the run executes
- Orders, ledger, and a classified issue feed
- Strategy logs you can tail
- CSV export for run data
Where paper trading helps.
Pressure-testing on live data.
Confirm the strategy places the orders you expect, at the times you expect, over a real session, before any capital is involved. This is where most strategy bugs surface.
Fills are simulated.
Paper fills approximate the market but won't match a real broker exactly. Treat paper as a behavior and timing check, not a final verdict on fill quality or slippage.
Paper trading on Periscøpe: questions.
What is paper trading? +
Paper trading runs a strategy on a live market feed but routes its orders to a simulator instead of a real broker. You see how the strategy behaves in real time, including orders, fills, positions, and P&L, with no capital at risk.
How is paper trading different from backtesting? +
A backtest replays historical data as fast as the engine can step through it. Paper runs in real time against a live feed, so you also see timing, gaps, and how the system holds up over a real session.
Are paper fills the same as live fills? +
Paper fills are simulated, so they're close but not identical to what a real broker would do. Use paper to validate behavior and timing; in live, the broker is authoritative for fills and buying power.
Which assets can I paper trade? +
US equities, ETFs, and futures.
Can I move from paper to live? +
Yes. Live runs the same strategy code; promoting changes the broker binding, not the strategy. Live access is rolled out to select users on request.
Paper trade your first strategy.
We onboard in focused cohorts. Tell us what you trade and how you work. Live access is rolled out to select users on request.