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Algorithmic Signal Services



Our algorithmic signal services use AI-driven, systematic trading models to deliver precise buy, sell, and hold signals across stocks, ETFs, crypto, and bonds. Backtested strategies and automated investment signals remove emotion from decision-making, helping investors time entries and exits, reduce risk in downturns, and capture upside in bull and bear markets.


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1.5 Investment Professionals

When signing up for the Services, User shall provide complete and accurate information and responses to permit Cestrian to determine if User is an Investment Professional.

An "Investment Professional" includes, without limitation, any individual or entity who:

(i) receives market data for or on behalf of its business or any other entity;

(ii) is registered or qualified with the U.S. Securities and Exchange Commission (SEC), the U.S. Commodity Futures Trading Commission (CFTC), or any other securities agency, securities exchange, association or regulatory body, or commodities or futures contract market, association, or regulatory body, whether within or outside of the United States, or performs any functions similar to those that require an individual or entity to register or qualify with any of the foregoing;

(iii) provides or is engaged to provide investment research and/or investment advice to any other individual or entity;

(iv) is engaged as an asset manager;

(v) uses the capital of any other individual or entity in the conduct of User's trading, or conducts investing or investment analysis or trading for the benefit of a corporation, partnership, or other entity;

(vi) has entered into any agreement to share the profit of User's trading activities or receive compensation for User's trading activities; or

(vii) receives office space, equipment, or other benefits in exchange for User's trading or work as a financial consultant for any person, firm, or business entity.

User shall keep current its information and responses and shall immediately notify Cestrian of any changes that do or may result in a determination by Cestrian that User is an Investment Professional. If Cestrian becomes aware that User is or may be an Investment Professional, but has not signed up for the Services as an Investment Professional, Cestrian may require User to upgrade its Services subscription to the appropriate Investment Professional tier, and/or pay any additional fees that would have become due and payable had User correctly signed up as an Investment Professional at an appropriate earlier date, in order to continue using the Services.

Any determination as to whether or not User is an Investment Professional shall be made by Cestrian and is final and binding. For clarity, any failure by User to provide or maintain complete and accurate information or responses as required by this Section 1.5 shall be deemed a material breach of this Agreement, and Cestrian shall be entitled to immediately suspend User's access to the Services and Content, and/or terminate this Agreement, in addition to any other remedies that may be available to Cestrian under this Agreement, at law, or otherwise. For the avoidance of doubt, each Investment Professional subscription is for a single user only.

If User would like to purchase an Investment Professional subscription for multiple users, User may contact Cestrian (via email to minerva@cestriancapital.com or this contact form) to discuss Cestrian's Enterprise Subscription pricing options.

SignalFlow SPY

Jay Urbain, PhD

Themes: AI, Risk Management, Signals, SPY


Daily “Risk On / Risk Off” signals for the S&P 500. It’s a simple, disciplined way to protect your capital and grow returns without relying on emotions or opinions.

What You'll Receive:

Daily “Risk On / Risk Off” signal for the S&P 500
Systematic model designed to reduce drawdowns and capture index upside
A disciplined alternative to emotional index trading


See "Investment Professional" terms & conditions

SignalFlow Growth

Jay Urbain, PhD

Themes: AI, Risk Management, Growth


Smarter growth investing with AI-powered ETF rotation. Builds on the SPY model to identify the top 3 growth ETFs (from sectors like semis, software, and Bitcoin) during Risk On periods, or move to cash in Risk Off.

What You'll Receive:

Daily AI-driven ranking of the strongest growth ETFs
Rotation model that selects the top three leaders during Risk On periods
Automatic move-to-cash signals during Risk Off environments


See "Investment Professional" terms & conditions

What Subscribers Are Saying

November 2025 - Clear Guidance and Confidence

'Signal Flow services at Cestrian Capital gave me, a relative novice investor, clear guidance I could act on with confidence. With their unflappable, intelligent algos and robust, supportive community, I not only had the ability to weather these turbulent markets, but consistently managed to outpace them'

SignalFlow Long/Short

Jay Urbain, PhD

Themes: AI, Long/Short, Risk Management


Trade both bull and bear markets with daily long/short signals across SPY, SH, QQQ, PSQ. AI signals tell you whether to go long or short S&P 500 and Nasdaq ETFs, or sit in cash; letting you benefit from all market climates.

What You'll Receive:

Daily long or short signals across SPY, SH, QQQ, and PSQ
AI-generated direction calls for S&P 500 and Nasdaq exposure
Cash signals when the model determines neither long nor short has edge


See "Investment Professional" terms & conditions

YXI Crypto

Yimin Xu

Themes: AI, Crypto, Signals


Receive systematic trade signals across the most important Crypto names every day before market open. Focused signals on Bitcoin, Ethereum, Solana, Coinbase, and Robinhood, powered by YX Insights’ proprietary machine-learning models. Designed for disciplined traders who want clarity, not noise.

What You'll Receive:

Daily systematic signals for Bitcoin, Ethereum, Solana, Coinbase, and Robinhood
Pre-market alerts engineered to reduce noise and highlight actionable setups
Machine-learning models trained on volatility, momentum, and liquidity regimes
Clear buy, hold, or reduce signals designed for disciplined crypto traders


See "Investment Professional" terms & conditions

YX Insights - Commodities Signals

Yimin Xu

Themes: Commodities, Machine Learning, Macro Regimes


YX Insights brings you institutional-grade machine learning signals for the global commodities market. They are now made accessible to private investors through the Cestrian Capital Research Slack channels. Delivered daily before the New York market open, these signals provide a clear, actionable view of the prevailing risk regime across major commodity ETFs

What You'll Receive:

Daily binary signals (1 = Risk On, 0 = Risk Off) across:
  • GLD — SPDR Gold Trust
  • GDX — VanEck Gold Miners ETF
  • SLV — iShares Silver Trust
  • SIL — Global X Silver Miners ETF
  • USO — United States Oil Fund
  • PPLT — Aberdeen Standard Physical Platinum Shares ETF
  • PALL — Aberdeen Standard Physical Palladium Shares ETF
  • CPER — United States Copper Index Fund
Signals driven by machine-learning from a proprietary selection of macro drivers and asset-specific price feats, engineered to outperform buy-and-hold with lower volatility and drawdowns.
Delivered to Cestrian Capital Research Slack channels before the US session begins, so you are ready for pre-market positioning.


See "Investment Professional" terms & conditions

What Subscribers Are Saying

November 2025 - 'The Most Trusted And Actionable Of Them All'

'Yimin Xu’s YX Insights service is profound. His deep insight into macro context for equities and crypto - as well as his multivalent and diligent assessment of trends, opportunities and risks, are incredibly timely and well-reasoned. I especially appreciate that he has a robust machine learning approach, but isn’t a slave to it. He regularly gives a seasoned evaluation that combines the technicals, the fundamentals, as well as the digital signals – with an appropriate concern for risk management. '


November 2025 - 'I Would Recommend It To Everyone'

'I love Yimin Xu’s service here at Cestrian, YX Insights! Yimin is very knowledgeable and eager to share that with the service members. As part of the service, we get daily actionable AI signals for the Mag7, Bitcoin, SPY, QQQ and others. I especially like Yimin’s daily charts that give me the information I need to decide on what to invest in and when. Well worth the yearly subscription fee, I would recommend it to everyone. '

YXI Macro & Mag-7

Yimin Xu

Themes: AI, Mag-7, Signals


Receive systematic trade signals for the market’s most important growth stocks, every day before the market opens. Proprietary AI signals for SPY, QQQ, TLT, BTC, the MAG-7 and Palantir.

What You'll Receive:

Daily pre-market signals for SPY, QQQ, TLT, BTC, Apple, Amazon, Alphabet, Meta, Microsoft, Nvidia, Tesla, and Palantir
AI-based strength and weakness rankings across the most important growth leaders
A structured, repeatable approach to trading Mega Cap Tech with consistency


See "Investment Professional" terms & conditions

What Subscribers Are Saying

November 2025 - AI will be the next Industrial Revolution

'AI will be the next Industrial Revolution - but banking we shall do like it was done 100 years ago. Convinced that just sitting and waiting for the markets to just drop and recover eventually won’t be the smartest choice in the future? Cestrians AI Algos will make more out of your money - combined with the AI revolution: a double win.'

SignalFlow Bonds

Jay Urbain, PhD

Themes: AI, Bonds, Risk Mnagement


AI-driven bond ETF rotation for stability and returns. Identifies which bond ETFs (short to long duration) are most attractive each day across ICSH, SHY, IEF, TLT, helping avoid drawdowns and capture upside; the model moves to cash equivalent (ICSH) if it believes the entire bond complex is at risk.

What You'll Receive:

Daily bond ETF rankings across the duration curve (ICSH, SHY, IEF, TLT)
Signals identifying the strongest risk-adjusted opportunities each day
Automatic move-to-cash when the model detects elevated bond-complex risk


See "Investment Professional" terms & conditions
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