Global hedge funds significantly increased short positions against manufacturing companies in June as renewed geopolitical tensions in the Middle East fuelled concerns over supply chain disruption and rising input costs, according to a report by Reuters citing new securities finance data from Hazeltree.
The data shows manufacturing was the most heavily shorted sector during the month, overtaking all other industries as hedge funds positioned for potential earnings pressure linked to escalating uncertainty around shipping routes through the Strait of Hormuz.
Hazeltree, which tracks securities lending activity across approximately 600 asset managers and 16,000 global stocks, found that the number of manufacturing companies appearing among the most shorted names rose from May, reflecting growing investor caution toward businesses exposed to global supply chains.
Companies identified among the most heavily targeted included firms with significant reliance on imported components, such as Canadian Solar, Toyota and sportswear manufacturer Puma.
The increase in bearish positioning follows renewed conflict involving the US and Iran, which has reignited concerns over the security of one of the world’s most important energy shipping corridors. Although hopes of improving conditions had previously supported manufacturing stocks and eased commodity prices, renewed military escalation has prompted investors to reassess the outlook.
Market participants say prolonged disruption could weigh heavily on economically sensitive manufacturers through higher raw material costs, increased insurance premiums and more expensive freight rates.
Analysts note that even shipping routes far removed from the Middle East have experienced rising transport costs as vessels are rerouted and global logistics networks come under pressure. Freight rates on major trade lanes have climbed sharply in recent months, adding to concerns that supply chain stress could squeeze corporate margins across a range of industrial sectors.
Shipping volumes through the Strait of Hormuz also fell dramatically during the height of the disruption, highlighting the vulnerability of global trade flows to geopolitical events.
For hedge funds, the shift towards manufacturing shorts reflects a broader move to position portfolios defensively against companies viewed as particularly exposed to slowing economic activity, higher energy prices and continued supply chain volatility.
