Cold-storage warehousing has become a hot sector.

In the past year, we have seen a flood of capital pouring into temperature-controlled logistics facilities. Investors and buyers have rushed into the sector, eager to snap up the facilities that support the food supply chain.

Industry leaders Lineage Logistics and Americold in particular have been on a tear. Recent deals include

In just 11 years, Lineage has skyrocketed to become the largest company in its field. Today, Lineage and its competitor Americold together control 63% of the market for cold-storage warehousing, according to the International Association of Refrigerated Warehouses.

Why is there such a sudden spike of investor interest in cold chain logistics?

I believe there are four key reasons.

First, customers are seeking same-day delivery of fresh food. Online grocery sales are up 15% this year. The share of grocery spending online has doubled in 3 years, to 6%. This demand is fueling consolidation in the food delivery market. Germany’s DeliveryHero just bought South Korea’s Woowa for $4 billion. In turn, same-day produce requires an increase in cold-storage facilities.

Growth in online food purchases

Second, the boom in same-day logistics is driving an expansion in small, urban warehousing locations. Walmart, Albertsons, Safeway and others are investing in these micro-fulfillment centers for produce. These 10,000-20,000 square foot warehouses can be built in as little as 3 months. They enable retailers to meet customer demand more quickly.

Third, the same forces that are fueling consolidation in truck brokerage and freight forwarding apply to cold-chain warehousing too. XPO has grown from $75 million to $14 billion in enterprise value in just over 8 years. A buying binge of 17 companies drove its growth. Cold storage acquirors can also benefit from economics of scale. They can cut costs by eliminating overlapping overhead. They can pool technology investment across a broader base. And they can generate cross-selling into new markets. Buyers like Lineage, Agro, Emergent and Americold have all achieved these benefits.

Fourth, investors like the recession resilience of the cold chain. We are entering the 10th year of economic expansion, setting a record not reached since 1853. Investors are nervous about the likelihood of an economic contraction. Food logistics offers a hedge. In a downturn, food is thought to be recession-resistant. As Americold CEO Fred Boehler said, “Whether there is a bad harvest or cattle shortages, we as consumers, are still going to eat.”

As a result, the cold storage business is on fire. In the private markets, M&A and investment continues to surge. In the public markets, bellwether Americold’s stock has spiked 46% this year. The company now trades at record levels of 27x EBITDA. This market value growth comes despite relatively conservative EBITDA growth from $282 million to $297 million, according to Capital IQ.

Is the cold chain market overheating? Some think so. On the other hand, if we are witnessing a secular increase in growth in online grocery sales, then perhaps the outlook will remain bright.

Investors like Cambridge Capital, who tend to be growth-oriented, are considering cold storage logistics companies because the long-term growth opportunity remains compelling. As consumers continue to prioritize fresh food, organic perishables, and same-day delivery, it is likely that this supply chain sector will continue to serve up opportunity.

Benjamin Gordon, Cambridge Capital, Palm Beach