US Options Simulator Strategy Testing Payoff Analysis

Historical US Options Replay & Backtesting Simulator

NEWDAY is a minute-by-minute options replay and backtesting simulator built using real historical options data. Replay historical SPY trading days, test multi-leg strategies, track P&L, and study 0DTE and future expiries in realistic market conditions.

Built for realistic options strategy testing with historical option chains, payoff analysis, expiry behavior, and full trading-day playback.

Terms

Built for educational practice, realistic option workflow, and clearer decision-making — not financial advice.

Realistic Option Chain

View historical SPY option chains with strikes, premiums, ATM visibility, 0DTE expiries, and future expiries for realistic strategy practice.

Strategy Testing

Practice option buying, selling, spreads, straddles, strangles, iron condors, and multi-leg setups before trading live.

Payoff Analysis

Track P&L, study breakevens, understand expiry payoff behavior, and compare how positions change through a trading day.