OSI Systems: 15min chart shows Bollinger Bands Narrowing and Bearish Marubozu.

As per the 15-minute chart for OSI Systems, there is a notable indication of Bollinger Bands Narrowing and a Bearish Marubozu pattern on December 4, 2025, at 10:45. This suggests a decrease in the magnitude of stock price fluctuations, which indicates that sellers are in control of the market and bearish momentum is likely to persist.