BBMC Faces Technical Resistance Amid Volatile Performance The JPMorgan BetaBuilders U.S. Mid Cap Equity ETF (BBMC) has encountered technical resistance near $94.45, according to recent analysis. Day traders are advised to monitor $92.39 as a pivotal level. The ETF, which tracks U.S. mid-cap equities, has a current beta of 1.11, reflecting moderate market sensitivity.45