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Castellum AB (publ) vs AB Sagax (publ): Which Stock Looks Stronger in 2026?

AB Sagax (publ) holds the cleaner structural position, with the lead spread across profitability and valuation. Castellum AB (publ) still has the edge on stability, which keeps the comparison from looking entirely one-sided. The market setup is currently leaning toward Castellum AB (publ), which does not confirm the structural lead. That leaves a split case: the structural lead stays with AB Sagax (publ), but the market is not currently confirming it.

The comparison is based on similar long-term financial trajectories, not sector labels. Both peer scores are relative to the STOXX 600 universe, making them directly comparable.

Updated 2026-08-16

The clearest separation starts in profitability, with valuation adding a second layer of support. The overall score gap is 26 points in favour of AB Sagax (publ).

Trajectory Similarity
0.79
Similar
Peer-set rank: #12
within Castellum AB (publ)'s functional peer set

This comparison is anchored in long-term financial trajectory similarity within the selected peer universe.

The pair sits on a clearly comparable long-term path, though it is not a near-twin match.

The strongest overlap appears in investment intensity and margin consistency.

Similarity drivers
investment intensitymargin consistency
How to read the score
0.85–1.00 · Very similar0.70–0.84 · Similar0.55–0.69 · Moderately similarbelow 0.55 · Loose match
Peer-Relative Score
CAST.ST
Castellum AB (publ)
37
Peer-Score
Signal qualitylow
Peer basis: STOXX 600
vs
SAGA-B.ST
AB Sagax (publ)
63
Peer-Score
Signal qualitylow
Peer basis: STOXX 600

Scores reflect position relative to comparable companies with similar long-term financial trajectories.

Score differences across key dimensions.

Dimension spread: CAST.ST vs SAGA-B.ST Profitability 14 82 Stability 41 20 Valuation 49 79 Growth 50 55 CAST.ST SAGA-B.ST
Gap Ranking
#1 Profitability +68
#2 Valuation +30
#3 Stability +21
#4 Growth +5
Price Setup

Left means cheaper relative valuation. Higher means stronger structure.

Price setup map for CAST.ST and SAGA-B.ST Stronger + cheaper Stronger + richer Weaker + cheaper Weaker + richer CAST.STSAGA-B.ST Relative valuation Structural strength

AB Sagax (publ) looks stronger on relative valuation, while the broader price setup remains mixed.

Valuation position uses peer-relative PE percentile (idx_pct_pe) where available.

Entry today — historical context

Where CAST.ST and SAGA-B.ST each sit in their own 5-year price and valuation history.

BASED ON 5-YEAR HISTORY CAST.ST Elevated · above norm 0th 50th 100th 74 pct gap SAGA-B.ST Lower · near norm 0th 50th 100th 78th 4th
Today SAGA-B.ST sits in the lower portion of its own 5-year history (4th percentile), while CAST.ST sits higher in its own history (78th). Within each stock's own 5-year context, SAGA-B.ST is at a historically more favourable entry position than CAST.ST. This reflects entry timing, not which company is structurally stronger — peer-relative analysis is a separate question addressed above.

Describes historical entry positioning only. Descriptive — not investment advice.

Relative Position vs Comparable Companies
Profitability
On profitability, AB Sagax (publ) ranks near the top of the group; Castellum AB (publ) sits in the weaker half.
Valuation
On valuation, the same pattern holds: both are strong, but AB Sagax (publ) still leads clearly.
Profitability — Dominant Gap
CAST.ST
14
SAGA-B.ST
82
Gap+68in favour of SAGA-B.ST

The profitability lead is mainly driven by a 15.5-point operating margin advantage.

What keeps the gap from being one-sided

Castellum AB (publ) still shows lower market-fundamental divergence, which keeps the wider picture mixed rather than completely one-sided.

What this means for the comparison

The lead is built on both profitability and valuation — though stability still provides a counterweight.

Explore full peer positioning in AssetNext

Break down the CAST.ST vs SAGA-B.ST comparison across all dimensions with the full interactive tool.

Explore full breakdown →
Other comparisons with conflicting dimension signals

Explore how CAST.ST and SAGA-B.ST each compare against other companies in their peer groups.

Rule-based, descriptive analysis only. Derived from peer percentile dimensions. Not investment advice. Peer groups are determined algorithmically based on structural similarity — not by sector classification alone.

How AssetNext Peer Scores Work

AssetNext scores reflect each company's structural position within its functional peer group — not a ranking against all stocks simultaneously. Peers are identified by similarity across eight financial dimensions, including revenue growth trajectory, margin structure, capital intensity, and earnings stability. A score of 75 means the company ranks in the top quartile within its own peer group, not the entire market.

Four dimension scores drive the overall peer score: Growth (revenue trajectory and expansion dynamics), Quality (margin structure and capital efficiency), Valuation (peer-relative pricing on standard multiples), and Stability (earnings consistency and financial predictability). Each dimension is scored 0–100 relative to the peer group, then combined into an overall peer score using equal weighting.

Because scores are peer-relative, the same company can have slightly different scores in different index universes. On comparison pages, both companies are shown within their shared peer universe wherever possible — so the scores are directly comparable. The peer basis is stated on each score card.

Scores are recalculated periodically as underlying financial data is updated. All analysis is descriptive and rule-based — AssetNext describes structural realities and never issues buy, sell or hold recommendations.