US500 Quantitative Playbook Updated 2026-10-17 Verified Against Venasri MT5 Engine

US500 Prop Firm Risk Plan: Exact Lot Caps for FTMO, FundingPips & The5ers Challenges

Direct Technical Answer

US500 lot size for a $100K prop firm account is 55.55 CFD lots at an 18-point stop when 1.00 lot is $1 per point, or 11 MES at $5 per point. Formula: lots = 1000 / (stop points × point value). Use half at 0.50% so 0DTE gamma and 18:00 UTC FOMC cannot spend the day.

S&P sizing looks like a gift because the spread is 0.3 to 0.6 points and the ATR is only 45 to 85 points. Traders then crank 55 CFD lots into an 18-point stop that sits inside dealer noise. On MES, 11 micros at 18 points is $990. On E-mini ES at $50 per point, 11 contracts at 18 points is $9,900, which is a blown evaluation in one pin break.

US500 Pip / Tick Value $1.00 per 1 (1.0 Lot)

Average Daily Range 45 to 85 index points

Intraday Stop Benchmark 14 to 24 index points

$100K 1% Risk Reference 55.55 CFD lots

Activate Free MT5 Protection Open Equity Guard & Kelly Sizing Launch 24/7 MT5 Bot

US500 Prop Firm Risk Plan: smoked glass and gold architectural pillars under a starry night sky — US500 Prop Firm Risk Plan

Balance-Anchored Daily Breach Floor $95,000.00 FTMO / FundedNext / E8 day-start balance basis

Equity-Anchored Rollover Breach Floor $96,900.00 FundingPips / The5ers / Alpha Capital higher-of-equity basis

Venasri Pre-Breach Equity Guard Cut-Off $97,650.00 Auto-flattens MT5 0.75% before firm liquidation

Exact MT5 Lot Size (US500) & Streak Buffer 2.00 Lots (8.5 losses to guard) $500.00 risk per ticket · 3-second Equity Guard active

Tiny ATR is why the lot number looks insane

CFD at $1 per point: 18-point stop is $18 per lot, 1000 / 18 = 55.55 lots. MES at $5: $1,000 is 11.11 micros. ES at $50: $1,000 is 1.11 contracts, so 1 ES is already about 0.90% at 18 points and 1.80% at 36 points of slip. Write the spec on the ticket before the cash open.

Typical spreads are 0.3 to 0.6 points. Daily ATR is 45 to 85 points. Intraday stops belong at 14 to 24 points. A 6-point scalp on 160 CFD lots is inside a 25-point gamma wall and inside the 15:50 ET MOC shove.

0DTE pins and FOMC are why 27 lots is the adult default

A 5% floor is $5,000. At $1 per point, 55.55 lots need only 90 points to end the day, which is one large S&P day plus slip. FOMC at 18:00 UTC can travel 40 points in a minute. 55.55 × 40 = $2,222 if the spec is $1, and $111,100 if you accidentally used ES dollars on a CFD lot count.

If you start free on Venasri, default to 27 CFD lots or 5 to 6 MES at 18 points. Set Venasri Equity Guard to flatten near 3.5% and stay flat into 18:00 UTC FOMC and 19:50 UTC MOC.

NAS100 and US30 do not get a second 0.50% if ES is open

US500 is the benchmark the other two indices follow. A full S&P ticket plus a full Nasdaq ticket is one US equity view. If US500 already uses 27 CFD lots, NAS100 does not get 7 lots on the same thesis.

Correlation Guard should cap the stack. 0DTE walls at 5800, 5850, and 5900 are where those stacked tickets die together when the pin breaks.

Size from the dealer wall, not from a 55-lot habit

Measure the stop beyond the nearest 25-point or 50-point strike plus 1.5× ATR. If that is 22 points on a $1 CFD, 0.50% is 22.7 lots. Do not cut to 9 points to keep 55 lots. The wall will take 9, then travel 20.

Confirm 13:30 to 19:30 UTC, spread under 0.6 points, and no FOMC or MOC window on the AI Pre-Trade Checklist. S&P lots look like a video-game number. They are only legal after the point value is $1 and the stop is outside the pin.

Equity Guard Circuit Breaker

Watches account equity and can flatten open MT5 positions

Warning: Armed Critical: Armed Auto-Flatten: Active

Behavioral Trade Monitor

Alerts when order flow turns impulsive

Revenge alerts: Clear Stop changes: Locked Rapid edits: Clear

Manual Trade Guard

Active on US500 · News pause available

Stop-loss: On Breakeven: On Partials: On

Verified Answers

Frequently Asked Questions: US500 Prop Firm Risk Plan: Exact Lot Caps for FTMO, FundingPips & The5ers Challenges

What US500 lot size should a $100,000 prop account use?

55.55 CFD lots at an 18-point stop when the spec is $1 per point, or about 11 MES at $5 per point. Evaluations should use half (about 27 CFD lots or 5 to 6 MES). Never place 11 E-mini ES contracts at that stop.

Why is the S&P lot number so much larger than NAS100?

The ATR is smaller (45 to 85 points versus 220 to 420). Dollar risk is the product of lots × stop × point value. A tighter stop allows more lots. It does not allow a tighter stop inside dealer noise.

How do I size ES versus a CFD?

ES is $50 per point. $500 risk at 18 points is 0.56 ES, so use 1 MES increment or stay on the CFD. Copying 55 lots onto ES is a fifty-times error.

Should I hold 27 lots through FOMC?

No. Flatten or cut to a 38 to 65 point swing size at about 7 to 13 CFD lots (0.50% to 1%). An 18-point stop is not a plan for an 18:00 UTC statement.