Freight Rates & Stock Prices

The Question

Shipping stocks are notoriously volatile. VLCC rates can double in a month, and tanker stocks often follow—or do they?

The conventional wisdom is that freight rates drive shipping stock prices. But the relationship is more complex:

• Expectations matter: Stocks price in future rates, not just current ones
• Time charter coverage: Companies with fixed contracts are less sensitive to spot rates
• Asset values: Vessel prices create a floor for stock valuations
• Management: Capital allocation decisions affect how rates flow to shareholders

I want to quantify these relationships. Specifically:

• How much of shipping stock variance is explained by freight rates?
• Which rate indices best predict stock movements?
• How do time lags affect the relationship?
• Does the relationship change across market cycles?

Approach

This is a data-heavy research project. The plan:

Phase 1: Data Collection

Gather historical data for:

• Spot freight rates (VLCC, Suezmax, Aframax for tankers; Capesize, Panamax, Supramax for dry bulk)
• Stock prices for major public shipping companies
• Time charter rates and forward curves
• Vessel asset values from broker reports

Phase 2: Statistical Analysis

Apply standard financial econometrics:

• Correlation analysis across different time windows
• Regression models with various rate indices
• Granger causality tests
• Cointegration analysis (similar to the pairs trading work)

Phase 3: Findings

Document what works and what doesn't. The goal isn't to prove a particular thesis—it's to understand the relationship and its limitations.

Why This Matters

If freight rates don't fully explain stock prices, what else does? Understanding the gaps could inform:

• Better valuation models for shipping stocks
• More nuanced trading strategies
• Improved risk management for shipping investors

Current Status

This project is in the early research phase. I'm currently:

• Sourcing freight rate data (Clarksons Research is the gold standard but expensive)
• Building a database schema for the analysis
• Reviewing academic literature on commodity-equity relationships

Updates will be posted as the research progresses. If you're working on similar questions or have data sources to suggest, I'd love to hear from you.