Diamond Hill's 15min chart shows bullish momentum with Bollinger Bands expanding upward.

Diamond Hill's 15-minute chart has exhibited a bullish trend, as evidenced by the upward expansion of Bollinger Bands and the appearance of a bullish Marubozu candlestick at 11:15 on March 23. This suggests that market momentum is being driven by buying activity, with buyers dominating the market. As a result, it is likely that the bullish trend will continue.