Roald Brouwer is CTO at Amrize Ltd (AMRZ). They have made 7 open-market trades across 1 company since 2025, most recently 2026-08-11.
CIK 0002069148
7 open-market purchases totalling $882K since 2025, never a sale. Across 6 scored buys the stock is down 4.1% at ninety days, and 10.5 points behind the S&P over the same stretch.
7 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| AMRZ | 21,490 | $813K |
Shares reported on the most recent Form 4, priced at the 2026-08-13 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 43% | 71% | 17% |
| Avg Move | -0.4% | +0.1% | -4.1% |
| Alpha | +0.5% | -1.2% | -10.5% |
| Scored | 7 | 7 | 6 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AMRZ | BUY | 2026-08-11 | 2026-08-13 | $46.36 | $70K | -5.7% | -15.9% | — |
| AMRZ | BUY | 2026-05-21 | 2026-05-21 | $49.84 | $75K | +6.4% | +5.9% | -10.5% |
| AMRZ | BUY | 2026-03-13 | 2026-03-16 | $54.88 | $110K | -3.3% | +2.9% | -5.4% |
| AMRZ | BUY | 2026-03-11 | 2026-03-11 | $58.72 | $176K | -3.2% | +1.6% | -7.7% |
| AMRZ | BUY | 2025-10-31 | 2025-11-04 | $51.78 | $207K | -4.1% | +3.6% | +4.0% |
| AMRZ | BUY | 2025-08-27 | 2025-08-27 | $51.88 | $104K | +4.5% | -8.4% | -2.5% |
| AMRZ | BUY | 2025-08-08 | 2025-08-12 | $47.06 | $141K | +2.5% | +11.3% | -2.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.