Old Second Bancorp: Bollinger Bands Narrowing, Bearish Marubozu on 15min chart.

In accordance with Old Second Bancorp's 15-minute chart, the Bollinger Bands have narrowed and a bearish Marubozu pattern has emerged, indicating a decrease in the magnitude of stock price fluctuations. This suggests that sellers are currently dominating the market, and it is likely that bearish momentum will continue.