Castellum stock holds near SEK 120 as rental income grows

Castellum stock (SE0021921319) closed at SEK 120.00 on Nasdaq Stockholm on September 18, 2026, up 0.8 percent from the prior close. The latest reported half-year figures show rental income of about SEK 7.0 billion in the first half of 2026, compared with approximately SEK 6.5 billion a year earlier.

Rental income rises 7.7 percent

According to Ad Hoc News on September 21, 2026, Castellum reported rental income of approximately SEK 7.0 billion for the first half of 2026, versus about SEK 6.5 billion in the first half of 2025. That represents an increase of roughly 7.7 percent and gives the current valuation a concrete operating base.

Net operating income also increased to around SEK 5.1 billion in the first half of 2026 from approximately SEK 4.8 billion a year earlier, a gain of about 6.3 percent. Income from property management reached around SEK 2.6 billion, compared with about SEK 2.4 billion in the prior-year period, an increase of roughly 8.3 percent, according to Ad Hoc News.

Stock remains below yearly high

The September 18 closing price stood about 11 percent below the 52-week high near SEK 135 and about 26 percent above the 52-week low near SEK 95. The same market snapshot put trading volume near 1.2 million shares and market capitalization at approximately SEK 40.0 billion, both as of September 18, 2026.

For investors, the comparison between operating growth and the share price range is central. Property management income rose 8.3 percent year over year in the first half of 2026, while the stock remained below its yearly high, leaving interest costs, occupancy and debt maturities as key valuation variables.

Third quarter date sets next checkpoint

Castellum's financial calendar lists October 25, 2026, as the date for the next interim report covering the third quarter of 2026, according to Ad Hoc News. The company has also emphasized maintaining occupancy rates and optimizing debt maturities for the remainder of 2026, rather than pursuing aggressive expansion.

Castellum stock was SEK 120.00 on Nasdaq Stockholm as of September 18, 2026, with a 0.8 percent daily gain. The shares traded between approximately SEK 95 and SEK 135 over the preceding 52 weeks.

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