Castellum, SE0021921319

Castellum stock heads into the open after a share buyback

Published on 09/10/2026 at 03:21 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

At the close on September 8, 2026, Castellum stock ended at SEK 132.05 on Nasdaq Stockholm, with the share buyback programme still in progress and the OMXS benchmark moving lower in the same session.

Aquarellmalerei einer nordischen Stadtsilhouette mit Bürotürmen am Wasser
Castellum AB (SE0021921319) ist im Immobiliensektor tätig, hier dargestellt als malerische Aquarell-Ansicht einer nordischen Hafenstadt, Illustration mit AI erstellt.

Castellum stock closed at SEK 132.05 on Nasdaq Stockholm on September 8, 2026, down 0.10 percent. Castellum AB (ISIN SE0021921319) ended the session after trading between SEK 131.80 and SEK 132.60.

September 8, 2026 in numbers

Trading volume reached 1.2 million shares, while the stock finished 0.35 percent below the prior close of SEK 132.51. Against the same-day OMXS benchmark, the move was slightly weaker, with the index slipping 0.4 percent in the session.

As TipRanks reported on September 9, 2026, Castellum bought back 3,037,746 shares between September 2 and September 9, 2026, at an average price of SEK 132.03 per share. The update said the programme totaled about SEK 401 million.

September 10, 2026 ahead

On September 10, 2026, the buyback programme remains the main company-specific item tied to the stock. Investors also watch the broader Swedish market tone after the OMXS index slipped in the previous session.

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