Key Mover for Sep 30: $GDXU (▼-4.24%)
One of the most extreme cross-asset moves, down 4.24% on the day and 36.16% over 22 days as miners remained under heavy pressure.

Key Mover for Sep 28: $GDXU (▼-16.24%)
Dropped 16.24% in one day and is down 41.34% over 22 days, showing extreme downside in leveraged gold miners.

Market Observation for Sep 23:
Precious metals saw sharp downside pressure, including $GDXJ -5.2%, $SLV -4.2%, and leveraged miner ETF $GDXU -13.5%.

Key Mover for Sep 23: $GDXU (▼-13.49%)
Most extreme ETF decline in the dataset, down 13.49% on the day and 29.22% over 22 days despite a 58.62% 63-day gain.