Trade with proven systems, not guesswork.
Rule-based trading strategies tested on 15+ years of market data. No emotions. No subjective analysis. Just data-driven edge.
Free access: shared strategies, a 24/7 trading assistant and the community.
Prop Firm Payouts
Real payouts from funded accounts β the system works.
6+
Years Experience
100+
Strategies Backtested
150+
Traders Taught
1-on-1
Personal Mentorship
How Ξ£ystem 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 Ξ£ystem Theory runs thousands of Monte Carlo simulations against the real rules of Topstep, Apex, Take Profit Trader and more β know your pass probability and expected payout before you pay for another evaluation.
Built-in Prop Firm Analytics Suite
Stop guessing. Know your exact odds of passing any prop firm challenge before you risk a single dollar.
Prop Firm Simulator
Run thousands of Monte Carlo simulations on your strategy to see realistic challenge outcomes before going live.
Pass Odds Calculator
Input your win rate, RR, and drawdown rules β get a precise probability of passing any challenge phase.
Account EV Analysis
Calculate the true expected value of a funded account after fees, splits, and scaling β know if it's worth it.
Strategy Analyzer
Deep-dive performance metrics: profit factor, Sharpe ratio, max drawdown distribution, and regime analysis.
Risk & Position Sizing
Optimal position sizing models tailored to prop firm drawdown rules to maximize growth while staying compliant.
Quant Validation Notebook
Automated backtesting notebook to validate any strategy idea with institutional-grade statistical rigor.
27.35%
avg 11.5 days
72.65%
avg 7.2 days Β· Trail DD 100%
Challenge equity paths
Trading day 1/39 Β· Median $49.8K
See how systematic traders work, from the inside.
Join the Free Discord
The mind behind Ξ£ystem 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" β I believe in quantifiable, repeatable systems that have proven statistical edge
Through Ξ£ystem 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 β where every decision is objective and every strategy is backtested.
Traders who transformed their results
Real feedback from traders who adopted the systematic approach.
ymr14
23 Oct 2026
I have been part of System Theory for around 2 months now, and I can honestly say the value has been really good so far. What I appreciate most is that you're not just handed a bunch of EAs and told to make money. You actually learn the methodology behind the strategies, how to backtest them properly, evaluate robustness, manage risk, and build a diversified portfolio. There is no magic strategy being promised here, just a structured approach to systematic trading that actually makes sense. The tools are great too and having direct access to the person developing and trading these systems makes a big difference. Still have plenty to learn, but overall really happy with the community and definitely feel like I have gotten my money's worth. Thank you for the opportunity π
fin2424
martin23
martin23
Ricky Spanish
fin2424
fin2424
Ana Selvan
kkfx
Pratik K.
ymr14
23 Oct 2026
I have been part of System Theory for around 2 months now, and I can honestly say the value has been really good so far. What I appreciate most is that you're not just handed a bunch of EAs and told to make money. You actually learn the methodology behind the strategies, how to backtest them properly, evaluate robustness, manage risk, and build a diversified portfolio. There is no magic strategy being promised here, just a structured approach to systematic trading that actually makes sense. The tools are great too and having direct access to the person developing and trading these systems makes a big difference. Still have plenty to learn, but overall really happy with the community and definitely feel like I have gotten my money's worth. Thank you for the opportunity π
fin2424
martin23
martin23
Ricky Spanish
fin2424
fin2424
Ana Selvan
kkfx
Pratik K.
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.
Not sure yet? Join the free Discord and ask anything first.
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
- Trading Floor β Private Discord Community
- Systematic Trading Roadmap + Ongoing Guidance
- Shared Strategies Inside the Private Discord
- Prop Firm Simulator β Know Your Pass Odds Before You Risk a Dollar
- Funded Account EV Calculator β Know Your True Expected Value
- Strategy Analyzer with Prop Firm Performance Analysis
- Quant Strategy Validation Notebook β Automated
- Advanced Strategy Library β 16+ Strategies
- Exclusive Quant Trading Book Library β $2,000+ Value
Everything in Monthly Access, plus access to our advanced strategy library, portfolio updates, and exclusive Quant Trading Library.
What's included
- Full Course on How to Get Funded and Stay Funded
- EA Development Support
- Trading Floor β Private Discord Community
- Systematic Trading Roadmap + Ongoing Guidance
- Shared Strategies Inside the Private Discord
- Prop Firm Simulator β Know Your Pass Odds Before You Risk a Dollar
- Funded Account EV Calculator β Know Your True Expected Value
- Strategy Analyzer with Prop Firm Performance Analysis
- Quant Strategy Validation Notebook β Automated
- Advanced Strategy Library β 16+ Strategies
- Exclusive Quant Trading Book Library β $2,000+ Value
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.
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 β 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
Are you interested in joining?
Fill in the form below and you'll be redirected to pick a time that works for you.
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Common Questions
Everything you need to know before joining.
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Ready to trade with a real edge?
Join the free Discord to get the shared strategies and a community of systematic traders. Members unlock the 24/7 trading assistant and live analytics.