MarketPeel
Insider Trading Intelligence
RB

Roald Brouwer

AMRZ
CHIEF TECHNOLOGY OFFICER · AMRIZE LTD · CIK 0002069148
FILING MIX · LIFETIME100%/0%
BUYS
11
SELLS
0
TOTAL VALUE
$812.7K
COMPANIES
1
ACTIVE SINCE
Aug 2025
HOLDINGS NOW
19,757
AVG SELL PX
TRADE KIND
SHOWING 11 / 11
Trades · vs SPY
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Performance · forward returns vs SPY
9 backtested trades · 8 horizons · 20 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Roald Brouwer, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d9+44.44%+0.55%-0.57%+1.12%+0.23%
14d9+55.56%+1.75%-0.61%+2.37%+2.85%
30d9+77.78%+6.27%+1.68%+4.59%+3.05%
60d9+22.22%-1.61%+4.47%-6.08%-4.92%
90d9+66.67%-0.52%+5.81%-6.33%-4.24%
180d9(2 pending)+100.00%+18.31%+6.72%+11.59%+14.30%
1y9(9 pending)
2y9(9 pending)
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
AMRZ · 19,757 shares · as of May 21, 2026
04,9399,87914,81819,7572026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2025
2025
2026
2026
FLOW · 11 buys / 0 sellsCOVERAGE · 4 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
AMRZ
AMRIZE LTD
PURCHASE
Chief Technology Officer
1,500$49.84$74.8K19,757May 21, 2026May 21, 2026View →
AMRZ
AMRIZE LTD
PURCHASE
Chief Technology Officer
2,000$54.88$109.8K18,257Mar 13, 2026Mar 16, 2026View →
AMRZ
AMRIZE LTD
PURCHASE
Chief Technology Officer
3,000$58.72$176.2K16,257Mar 11, 2026Mar 11, 2026View →
AMRZ
AMRIZE LTD
PURCHASEGRANT
Stock grant
4,25713,257Feb 27, 2026Mar 3, 2026View →
AMRZ
AMRIZE LTD
PURCHASE
Chief Technology Officer
3,000$51.78$155.3K8,000Oct 31, 2025Nov 4, 2025View →
AMRZ
AMRIZE LTD
PURCHASE
Chief Technology Officer
1,000$51.76$51.8K9,000Oct 31, 2025Nov 4, 2025View →
AMRZ
AMRIZE LTD
PURCHASE
Chief Technology Officer
2,000$51.88$103.8K5,000Aug 27, 2025Aug 27, 2025View →
AMRZ
AMRIZE LTD
PURCHASE
Chief Technology Officer
1,000$46.84$46.8K3,000Aug 12, 2025Aug 12, 2025View →
AMRZ
AMRIZE LTD
PURCHASE
Chief Technology Officer
218$48.07$10.5K2,000Aug 11, 2025Aug 12, 2025View →
AMRZ
AMRIZE LTD
PURCHASE
Chief Technology Officer
782$48.08$37.6K1,782Aug 11, 2025Aug 12, 2025View →
AMRZ
AMRIZE LTD
PURCHASE
Chief Technology Officer
1,000$46.25$46.3K1,000Aug 8, 2025Aug 12, 2025View →
Other insiders · AMRZ
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About this filer
CIK 0002069148
ROLE
Chief Technology Officer
PRIMARY
AMRZ
COMPANIES
1
ACTIVE SINCE
Aug 2025
MARKETPEEL · /INSIDER/0002069148DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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