Castellum's Short Score Climbs as the Stock Rallies

Castellum heads into the second week of November with an unusual tension: a stock up 11% over the past month, but a short score that keeps drifting higher.

The short score has climbed to 71.1 from around 69.4 at the start of the week, its highest reading in the recent run and up from a broader context where earlier notes had flagged 75 as the six-month peak. That drift higher matters because the lending market tells a much more relaxed story. Short interest as a proportion of the free float sits at modest levels, borrowing costs are low at 0.85% annually, and borrow availability has actually loosened rather than tightened: the availability reading is 276%, meaning there are roughly 2.76 shares available to borrow for every one already borrowed. That figure has eased back from above 330% earlier in the week but remains far above the 52-week floor of 109%. Nothing in the lending market points to a squeeze. The short score elevation is therefore more likely reflecting momentum signals and days-to-cover mechanics than any crowded, high-conviction short position.

The street picture is thin but not unfriendly. The analyst mean price target is 138.73 SEK against a close of 135.25, leaving roughly 2.6% of implied upside on consensus. No recent analyst changes are on record. The factor scores offer more colour: the forward EPS year-on-year growth rank hits the 93rd percentile, a standout reading that suggests analysts expect a meaningful earnings step-up. The dividend score ranks in the 88th percentile, consistent with Castellum's history as an income vehicle in the Swedish property sector. The short score rank at the 4th percentile and days-to-cover rank at the 12th percentile flag that this is not a heavily shorted name relative to its universe, even if the absolute score has crept up. Price-to-book is 0.81, up roughly 0.10 over 30 days as the stock has re-rated. The P/E has expanded by about 1.6 turns over the same period to 15.2x, moving in step with the broader rally.

The peers are broadly confirming the sector recovery. BALD B is the standout, up more than 10% on the week, while HUFV A gained nearly 8% and WALL B added close to 6%. Castellum's own 2.7% weekly gain is real but lags the strongest movers in its correlated group. That relative underperformance within a rising sector is worth noting: Castellum is not leading the recovery even as its month-to-date move looks solid.

Institutional ownership is dominated by Akelius Apartments, which holds 16% of shares with no recent change, alongside Nordea Investment Management and BlackRock both reporting small additions in their most recent disclosures. The insider data covers only trades up to early May and is too stale to draw current conclusions, though the pattern through the first quarter showed consistent small-scale buying across board members and the CEO.

The most recent earnings print on 22 October delivered a 5.7% one-day gain, the strongest post-results move in the available history. The next quarterly report is not until 12 February 2027, leaving a long runway before the market gets another fundamental check-in. What to watch in the interim is whether the short score continues creeping toward its prior six-month peak near 75, and whether the sector rally broadens enough to bring Castellum's weekly returns back in line with its faster-moving peers.