Σystem Theory background

Trade with proven systems, not guesswork.

Rule-based trading strategies built on 15+ years of systematic research. No emotions. No subjective analysis. Just data-driven edge.

6+

Years Experience

100+

Strategies Backtested

150+

Traders Taught

1-on-1

Personal Mentorship

The Method

How Σystem Theory works

A systematic framework for consistent profitability, built on institutional-grade strategies.

Proven Strategies

Access clear, rule-based trading strategies backtested over decades of market data.

Systematic Approach

Remove emotions from trading. Every entry, exit, and position size is defined by the system.

Risk Management

Professional-grade risk management frameworks that protect your capital in all conditions.

Data-Driven Edge

Trading decisions backed by statistical probabilities, not opinions or gut feelings.

Complete Independence

Learn to trade independently with full confidence in your strategy and execution.

1-on-1 Mentorship

Personal guidance through theory and practice until you become consistently profitable.

Stop paying to fail prop challenges.

Upload your trade log and Σystem Theory runs thousands of Monte Carlo simulations against the real rules of Topstep, Apex, Take Profit Trader and more — know your pass probability and expected payout before you pay for another evaluation.

Blind evaluations. Fees you can't get back.
Know your odds before you risk a dollar.
Exclusive Member Tools

Built-in Prop Firm Analytics Suite

Stop guessing. Know your exact odds of passing any prop firm challenge before you risk a single dollar.

Included in all plans
Simulator

Prop Firm Simulator

Run thousands of Monte Carlo simulations on your strategy to see realistic challenge outcomes before going live.

Calculator

Pass Odds Calculator

Input your win rate, RR, and drawdown rules — get a precise probability of passing any challenge phase.

EV

Account EV Analysis

Calculate the true expected value of a funded account after fees, splits, and scaling — know if it's worth it.

Analytics

Strategy Analyzer

Deep-dive performance metrics: profit factor, Sharpe ratio, max drawdown distribution, and regime analysis.

Risk

Risk & Position Sizing

Optimal position sizing models tailored to prop firm drawdown rules to maximize growth while staying compliant.

Automation

Quant Validation Notebook

Automated backtesting notebook to validate any strategy idea with institutional-grade statistical rigor.

10,000SIMULATIONS
Pass

27.35%

avg 11.5 days

Fail

72.65%

avg 7.2 days · Trail DD 100%

Net EV (Mean)
$579
Payout Probability
66.80%
Mean Payout
$2,703
Days to 1st Payout
10.4 days
Net EV, 5th pct
-$998
Net EV, 95th pct
$4,881

Challenge equity paths

Trading day 1/39 · Median $49.8K

All paths (1000)
Median P&L-$221P5 – P95: -$595 to $1.1K59% losing
-$925-$475-$25$425$875$1.2K
About Σystem Theory
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About

The mind behind Σystem Theory

My name is Stavros Eleftheriades and I am a systematic trader with 6+ years of experience building rule-based trading strategies. I don't believe in drawing lines on charts or following "signals" — I believe in quantifiable, repeatable systems that have proven statistical edge

Through Σystem Theory, I mentor serious traders who are ready to stop guessing and start trading with real, data-backed strategies. My approach comes from the systematic trading world — where every decision is objective and every strategy is backtested.

6+ years of systematic trading experience
Rule-based strategies across multiple asset classes
Data-driven approach backed by statistical edge
Personal 1-on-1 mentorship for serious traders
Results

Traders who transformed their results

Real feedback from traders who adopted the systematic approach.

fin2424
martin23
martin23
ZorveX_Trader
Ricky Spanish
fin2424
fin2424
Ana Selvan
kkfx
Pratik K.
Proof of Work

Prop Firm Payouts

Real payouts from funded accounts — the system works.

FTMO Reward $600.96

FTMO Reward $600.96

FTMO Reward $1,178.97

FTMO Reward $1,178.97

FTMO Reward $2,727.75

FTMO Reward $2,727.75

FTMO Reward $853.84

FTMO Reward $853.84

FTMO Reward $264.46

FTMO Reward $264.46

Passed FTMO Challenge

Passed FTMO Challenge

Passed Verification

Passed Verification

Passed FTMO Challenge

Passed FTMO Challenge

Reward $860.42

Reward $860.42

Reward $1,189.81

Reward $1,189.81

Royal Challenge Phase 2

Royal Challenge Phase 2

Royal Challenge Phase 1

Royal Challenge Phase 1

Reward $2,502.18

Reward $2,502.18

Reward $1,206.25

Reward $1,206.25

Royal Challenge Phase 1

Royal Challenge Phase 1

Royal Challenge Phase 2

Royal Challenge Phase 2

Reward $935.70

Reward $935.70

Reward $505.76

Reward $505.76

Royal Challenge Phase 2

Royal Challenge Phase 2

Royal Challenge Phase 1

Royal Challenge Phase 1

Royal Challenge Phase 1

Royal Challenge Phase 1

Royal Challenge Phase 1

Royal Challenge Phase 1

FTMO Reward $889.15

FTMO Reward $889.15

Passed FTMO Challenge

Passed FTMO Challenge

Blueberry Funded Verification Pass

Blueberry Funded Verification Pass

FTMO Reward $750.28

FTMO Reward $750.28

Membership

Build Your Systematic Prop Firm Edge

Start with the course, access the advanced strategy library, or apply for a private implementation built around your firm, rules, and risk profile.

Monthly AccessLearn the Process
$80/month

Full access to the course, private trading floor, strategy analyzer, shared strategies, and ongoing guidance.

What's included

  • Full Course on How to Get Funded and Stay Funded
  • EA Development Support from Developers with 10+ Years Experience
  • Trading Floor — Private Discord Community
  • Systematic Trading Roadmap + Ongoing Guidance
  • Shared Strategies Inside the Private Discord
  • Prop Firm Simulator — Know Your Pass Odds Before You Risk a Dollar
  • Funded Account EV Calculator — Know Your True Expected Value
  • Strategy Analyzer with Prop Firm Performance Analysis
  • Quant Strategy Validation Notebook — Automated
  • Advanced Strategy Library — 20+ Strategies
  • Exclusive Quant Trading Book Library — $2,000+ Value
Quarterly AccessAdvanced Strategy Library
Best Value
$210/quarter

Everything in Monthly Access, plus access to our advanced strategy library, portfolio updates, and exclusive Quant Trading Library.

Save $30 + Advanced Strategy Library Included

What's included

  • Full Course on How to Get Funded and Stay Funded
  • EA Development Support from Developers with 10+ Years Experience
  • Trading Floor — Private Discord Community
  • Systematic Trading Roadmap + Ongoing Guidance
  • Shared Strategies Inside the Private Discord
  • Prop Firm Simulator — Know Your Pass Odds Before You Risk a Dollar
  • Funded Account EV Calculator — Know Your True Expected Value
  • Strategy Analyzer with Prop Firm Performance Analysis
  • Quant Strategy Validation Notebook — Automated
  • Advanced Strategy Library — 20+ Strategies
  • Exclusive Quant Trading Book Library — $2,000+ Value
Private BuildApplication Only
Custom Prop Firm Portfolio Build
$4,500/year

A private 90-day implementation package where we build your systematic prop firm setup around your exact firm, account size, broker, rules, drawdown limits, symbols, risk profile, and scaling plan.

Includes 12 months of full platform access plus direct 1-on-1 support during the private implementation period. Renews annually.

Built with you. Not just handed to you.

Apply for Private Build →

Billed annually at $4,500/year. Includes 12 months of platform access and 90 days of private implementation.

What's included

  • Your own custom prop firm portfolio — fully built, fully coded, and delivered with full source code
  • Custom allocation and risk structure tailored to your account sizes, firms, and drawdown limits
  • 90-day private implementation and support period
  • Live performance review and portfolio adjustments
  • 12 months of Quarterly Access included
  • Firm-by-firm rules analysis and portfolio adaptation
  • Risk plan built around max loss, daily loss, payout targets, and scaling objectives
  • Private onboarding and strategy call
  • EA deployment and setup guidance
  • VPS, broker, and execution review
  • Scaling and payout planning
  • Full Course, private Discord, tools, portfolio access, and Quant Trading Library
Cancel anytimeSecure checkoutNo hidden fees
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