Greif A's 15min chart shows Bollinger Bands narrowing and KDJ death cross.

The 15-minute chart for Greif A has recently triggered a narrowing of Bollinger Bands, accompanied by a KDJ Death Cross on February 4th at 14:30. This suggests that the magnitude of stock price fluctuations is decreasing, and the momentum of the stock price is shifting towards the downside, potentially leading to further decreases.