AMRZ Dark Pool Activity
Amrize Ltd
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 1.3M AMRZ shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 780K of those shares (60.8%) were marked short or short-exempt, above AMRZ's 30-day rolling average of 54.4% (z-score 0.59). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), AMRZ's off-exchange short volume ratio ranged from 39.4% to 75.7% and averaged 55.0%; the latest reading is above that 10-session average.
Off-Exchange Volume
1.3M
Short Volume
780K
Short Volume Ratio
60.8%
30-Day Average
54.4%
z-score 0.59
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 696K | 404K | 57.9% |
| Oct 13, 2026 | 1.1M | 591K | 54.5% |
| Oct 14, 2026 | 1.4M | 1.1M | 75.7% |
| Oct 15, 2026 | 1.1M | 658K | 60.7% |
| Oct 16, 2026 | 1.8M | 938K | 51.8% |
| Oct 19, 2026 | 866K | 341K | 39.4% |
| Oct 20, 2026 | 795K | 416K | 52.3% |
| Oct 21, 2026 | 566K | 289K | 51.2% |
| Oct 22, 2026 | 1.0M | 476K | 45.7% |
| Oct 23, 2026 Latest | 1.3M | 780K | 60.8% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
AMRZ dark pool FAQ
- How much AMRZ off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 1.3M AMRZ shares in publicly disseminated off-exchange trades on Oct 23, 2026; 780K of those shares (60.8%) were marked short or short-exempt.
- Is AMRZ's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, AMRZ's short volume ratio of 60.8% is above AMRZ's 30-day rolling average of 54.4% (z-score 0.59). Meridian's dark pool model does not flag this reading as an anomaly.
- What does the dark pool short volume ratio measure?
- FINRA publishes daily short sale volume for trades reported off-exchange to its trade reporting facilities, which include dark pools and other off-exchange venues. The ratio divides FINRA's ShortVolume figure, which counts both short and short-exempt sales, by the total off-exchange shares reported for that day. It is not short interest and not a directional signal: market-maker hedging and reporting mechanics can raise it, so it is context for other signals.