Castellum sale to Wihlborgs, shares in focus after 13.3 billion kronor deal

Castellum's latest property transaction gives the Swedish landlord a clear market reference. SB1 Markets reiterated Neutral after the SEK 13.3 billion sale, while the average target stayed at SEK 128.

By Anna Wagner, Analysts & Consensus desk. Reviewed prior to publication on 2026-06-25, 15:48.

Castellum (SE0021921319) is back in the Swedish property news flow after SB1 Markets reiterated Neutral and Reuters-style market coverage pointed to the SEK 13.3 billion sale of a Skåne portfolio to Wihlborgs. The transaction gives the stock a concrete reference point on Thursday in Stockholm, where investors are watching how the deal reshapes the balance sheet and portfolio mix. MarketScreener report on SB1's note

What SB1 put on paper

SB1 Markets said the sale of 95 properties in South Sweden to Wihlborgs was agreed on June 25, 2026, with cash consideration of SEK 13.3 billion. The same update kept a Neutral rating and showed an average target price of SEK 128, while the last close on the page stood at SEK 121.40. Marketscreener company page for Castellum

The print matters because it places a hard value on a major asset sale in Castellum's Swedish portfolio. It also gives the market a fresh benchmark against a last close that already sits below the average target on the same page.

Thursday's market frame

Thursday's angle is the listed property sector in Stockholm, where Castellum trades alongside other Nordic landlords. Wihlborgs, the buyer in the announced deal, adds a direct peer comparison to the Swedish commercial-property universe and keeps the market focus on portfolio quality and capital allocation.

For readers following the sector, the key reference is still the deal size and the analyst reaction rather than a broad macro story. That keeps the discussion anchored in one transaction, one rating update and one clearly dated market valuation.

The business behind the stock

Castellum is a commercial real estate owner and developer with offices, logistics properties and other urban assets in Sweden, Copenhagen and Helsinki. The company frames its work around property management, development and selective transactions, which is why portfolio sales like the Skåne deal carry weight for the equity story.

The listing in brief

The Castellum shares (SE0021921319) trade on 2026-06-25, 15:48 on Nasdaq Stockholm at 121.40 SEK.

Castellum at a glance

• Company: Castellum AB
• ISIN: SE0021921319
• Ticker: CAST
• Trading venue: Nasdaq Stockholm
• Price (as of 2026-06-25, 15:48): 121.40 SEK
• Sector / industry: Real Estate - Office REITs
• Index membership: OMXS30

Disclaimer: This article is for information only and does not constitute investment advice.