Quantitative Research · Finance · Complexity Science

Joshua M. Peck

Quantitative researcher and author applying classical ML and complexity science to financial systems. Contributor to CBS, Reuters, and the Wall Street Journal.

PRINCIPLES
01

Humans are complex adaptive systems.

02

The economy is a complex adaptive system composed of humans.

03

Markets are the economy's information processing mechanism.

04

Regimes are the economy's discrete behavioral states.

05

Transitions between regimes are probabilistic, not deterministic.

06

Historical regime behavior rhymes but doesn't repeat.

07

SHAP attribution reveals which forces drive the current regime.

08

Probabilistic characterization beats point prediction.

The Work
Live

MacroContext

Detects prevailing macro regimes in real time. Built on Hidden Markov Models, PCA preprocessing, and SHAP attribution. Updated daily.

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Weekly

The AppliedComplexity Newsletter

Publishes the weekly regime call, model updates, and research notes on the intersection of complexity science and systematic trading.

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Harriman House

Cryptocurrency Risk Management

The earlier expression. The same conviction that markets reward rigorous thinking about the environment you're actually in — applied to an asset class most institutions were approaching with the wrong framework.

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As seen in

CBS Wall Street Journal Reuters MarketWatch Bloomberg
01Current Regime
Danger — April 5, 2026

Multiple stress signals are aligned simultaneously.

Credit spreads widening VIX elevated SPX below 200-day MA Momentum negative

Iran war stress period ongoing. Model assigns Danger with high probability. Defensive positioning warranted per framework rules.

02Latest Research

From the publication

03The AppliedComplexity Newsletter

Macro regime detection, weekly.

The current regime call, top contributing features, and research notes. Every Monday. Free.

No spam. Unsubscribe anytime. Institutional research, not financial advice.