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A comprehensive guide to key investment terms and concepts used throughout the Parallax platform and in quantitative investing. These are the standard terms you’ll encounter in portfolio reporting, performance analysis, and investment strategy documentation.
Understanding Risk Measurement: No single metric captures all dimensions of portfolio risk. Each measure provides a different perspective, and together they create a comprehensive picture of portfolio characteristics.

Risk-Adjusted Performance

Metrics that evaluate returns relative to risk taken.

Alpha

Excess returns vs. benchmark - measures value added beyond market movements

Sharpe Ratio

Return per unit of total risk - the gold standard for risk-adjusted performance

Information Ratio

Active return efficiency - measures consistency of benchmark outperformance

Treynor Ratio

Return per unit of systematic risk - best for well-diversified portfolios

Risk & Volatility Measures

Quantifying uncertainty and downside potential.

Beta

Market sensitivity - how much your portfolio moves with the market

Standard Deviation

Return dispersion - measures how much returns jump around

Correlation

Asset co-movement - whether investments move together or independently

Drawdown

Peak-to-trough losses - the worst decline you’d experience

Portfolio Construction

Building and managing portfolios.

Diversification

The only free lunch in investing - reducing risk through variety

Factor Investing

Systematic approaches targeting proven return drivers

Market Capitalization

Company size measurement and why it matters

Portfolio Rebalancing

Maintaining target allocations over time

Investment Strategies

Approaches to selecting securities.

Momentum

Riding trends - recent winners tend to keep winning

Value Investing

Buying stocks for less than they are worth

Volatility

Price fluctuations and market uncertainty

Risk-Adjusted Returns

Evaluating performance relative to risk taken

Advanced Analytics

Sophisticated portfolio analysis techniques.

Tracking Error

How closely a portfolio follows its benchmark

Hit Ratio

Frequency of benchmark outperformance

Information Coefficient

Measuring forecasting skill

Style Analysis R-Squared

How much factors explain returns

Factor-Adjusted Alpha

True skill after removing factor exposures

Fundamentals

Core investment concepts.

Return

Measuring investment gains and losses

Benchmark

Standards for measuring performance

Asset Allocation

Dividing your portfolio among asset classes

Investment Approaches

Systematic and quantitative methods.

Quantitative Investing

Data-driven, systematic investment approaches

Systematic Strategy

Rules-based approaches to investing

Islamic Finance

Shariah-compliant investing principles and terminology.

Shariah

Islamic law framework governing permissible investments

Halal Investing

Investments that comply with Islamic principles

Riba

Prohibition on interest and usury

Purification

Cleansing non-compliant income through charity

Explore each term to understand both the intuitive meaning and the technical details behind these essential investment concepts.