Shipping market volatility, often seen as a risk, can be transformed into a portfolio diversification tool, according to new research from Frankfurt-based Seahawk Investments, the investment management arm of maritime and aviation advisory group Transport Capital.
Research methodology and fund performance
Seahawk published research centred on its Seahawk Equity Long Short Fund, operating since May 2019. The fund uses fundamental analysis to take both long and short positions across transport and energy stocks, including shipping, freight and logistics, rail, airlines, aircraft and ship financing, renewables, utilities and conventional energy. According to Seahawk, different freight markets rarely move in lockstep, creating opportunities to trade relative performance of companies exposed to container shipping, tankers, dry bulk, logistics, aviation and energy.
The study tested two portfolio allocation scenarios using Bloomberg data from May 2019 to March 2026:
| Metric | Baseline portfolio (40% MSCI World / 60% euro IG bonds) | Baseline with 20% Seahawk fund replacing half equity | Equity-heavy portfolio | Equity-heavy with 30% Seahawk fund |
|---|---|---|---|---|
| Sharpe ratio | 0.49 | 0.73 | 0.62 | 0.83 |
| Annualised return | 4.71% | 5.26% | 11.89% | 12.66% |
| Volatility | 7.02% | 5.45% | N/A | 3.37 pp reduction |
Seahawk's calculations show that replacing half of the equity allocation in a traditional mixed portfolio lifted the Sharpe ratio from 0.49 to 0.73 and increased annualised returns from 4.71% to 5.26%, while volatility fell from 7.02% to 5.45%. In an equity-heavy portfolio, a 30% allocation to the fund produced a 12.66% annualised return (versus 11.89% for the MSCI World) and reduced volatility by 3.37 percentage points.
Low correlation with traditional assets
The fund had a correlation of 0.27 with the MSCI World and negative 0.05 with the bond benchmark during the period, according to Seahawk, indicating performance was largely independent of broader equity and fixed-income markets. This independence stems from the fund's strategy of exploiting supply-and-demand cycles within transport and energy. Seahawk noted that a tanker owner may benefit from firm freight rates while a container carrier is weighed down by overcapacity, while orderbooks, commodity prices, production quotas and regulation produce further differences between individual stocks.
Sector divergence in practice
Seahawk's June 2026 fund update showed dispersion continuing across shipping equities: crude tanker stocks outperformed while product tanker and dry bulk names weakened. Long shipping positions detracted 0.4% during the month, while short positions added 0.1%. This intra-sector variation is central to the fund's ability to generate returns independent of broad market movements.
Implications for logistics and freight operators
For logistics managers and freight forwarders, the research underscores that shipping markets are driven by distinct sub-sector cycles. Understanding these cycles can inform contracting strategies — for example, locking in long-term rates when overcapacity depresses container rates, or hedging fuel costs when tanker rates rise. The study also highlights that public shipping equities remain under-invested by institutions due to limited market capitalisation, governance concerns and volatility, but that active strategies can turn volatility into an advantage. As Seahawk's approach demonstrates, the very factors that make shipping a challenge for operators — cyclicality, supply-demand imbalances, regulatory shifts — can be systematically traded.
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