On 21 July 2026, Norway's Government Pension Fund Global — often called the "oil fund" — publicly confirmed it owns 1.3% of Prologis and 8.3% of Segro, two of the world's biggest warehouse companies (NBIM). The fund built both positions from scratch within roughly 18 months.

The oil fund is a giant investment pool built from Norway's petroleum revenue. It manages money on behalf of the Norwegian people and invests in shares, bonds, and property around the world. Its official manager is Norges Bank Investment Management, or NBIM.

The 8.3% Segro stake is the larger of the two. Segro is listed on the London Stock Exchange and focuses on warehouses in the UK and mainland Europe. Prologis trades on the New York Stock Exchange and is the largest warehouse company in the world by stock-market value. The 1.3% figure for Prologis refers to the parent company, Prologis Inc.

Both companies are what investors call REITs, short for Real Estate Investment Trusts. A REIT is a company that owns buildings — in this case, warehouses and distribution centres — and collects rent from tenants. By law, REITs must pass most of their rental income to shareholders as dividends. You can buy and sell shares in a REIT on a stock exchange, just like shares in any other public company.

NBIM is no stranger to Prologis. In December 2013, the two formed a $1 billion partnership to invest in US logistics property — their second such deal (PR Newswire). But that earlier deal was a private joint venture, meaning NBIM co-owned specific buildings with Prologis under a negotiated agreement. This week's disclosure is different: NBIM bought shares on the open market. The value of those shares goes up and down with the stock price every day.

NBIM also made several organisational changes related to real estate management at the beginning of 2025 (NBIM), around the same time it started buying into Segro and Prologis European Logistics Partners. The fund has not disclosed the specific scope of those changes in its 21 July press release. Media enquiries are directed to press@nbim.no.

The fund's rules cap private, unlisted real estate at 7% of its total assets. But shares in listed companies like Prologis and Segro count toward the fund's stock allocation, not the real-estate cap. That distinction matters because the two categories face different risk limits inside the fund.

The stakes are small compared to the oil fund's total size, but they matter for the companies themselves. An 8.3% holding in a large company like Segro is enough to make NBIM one of its biggest shareholders, though the fund has not said exactly where it ranks. The 1.3% Prologis stake is smaller but still meaningful for the world's largest warehouse REIT.

The broader context here is why the oil fund likes warehouses at all. Warehouses are the buildings where goods sit between a factory and a shop or doorstep. As more people shop online, companies need more storage and distribution space. NBIM has been building its exposure to this sector for years. The 2013 deal with Prologis showed early conviction. Buying listed shares in Segro and Prologis extends that bet across more countries and more types of investment.

What the press release does not say is why NBIM published these numbers now. It gives no explanation. That is typical for the fund, which rarely comments on individual holdings. Without more detail, the market can only guess whether the disclosure is routine transparency or a hint that something bigger is coming.

For anyone watching where large institutions put their money, the confirmed figures give a real data point. The 8.3% Segro stake means a very large investor now sits as a major shareholder in a company whose value depends heavily on online shopping trends and the direction of interest rates. If NBIM later decides to buy more or sell some of that stake, the share price would likely move as a result.