Losses that come from the clock
Theta speeds up after midday. QuantOS costs your late-day trades separately, so you see what they really do to your P/L.
For SPX 0DTE Traders
Built by a 0DTE trader, for 0DTE traders
Same-day SPX options punish small mistakes fast. QuantOS shows you the market structure before the trade and the truth about your habits after it.
Decision GatesEXAMPLE DATA
RegimePrice above gamma flip, positive GEX
CALLEntry Timing3.1 points above VWAP, chasing
WAITExpected MoveInside the 1-day range priced by options
CALLClockAfter 14:00 ET, theta outruns gamma
NO TRADESetup ScoreHeuristic, not a probability
UNCALIBRATEDProblems QuantOS Solves
The costs you can’t see in a P/L chart
Exits taken in a panic
Replay shows how far price ran after you closed. Capture of MFE tells you how much of each move you kept.
Size creeping up after a loss
The size-above-plan rule puts a dollar cost on every oversized trade.
Guessing where dealers are positioned
GEX by strike and the gamma flip show where hedging flows can pin or push price.
Recommended Plan
Tier 2 · Workspace, USD $15 a month
The Workspace includes everything in the Trading Journal plus the tools you use during the session. Every account starts with 14 days of full access.
Try It Free
Make your next 0DTE trade a better one.
Try the full Workspace free for 14 days. Plans from USD $10 a month.