Nearest Resistance: $60 Nearest Support: N/A Catalyst: Merger Agreement One small-cap stock that's getting plenty of attention today is Robbins & Myers ( RBN), a firm that announced a merger agreement with National-Oilwell Varco ( NOV), the latter paying $60 per share in cash for each share of RBN. While that's spiking trading volume in RBN, there isn't a trade to be made here. Unless you're trying to vie for the 38 cents per share in merger arbitrage opportunity that's currently priced into RBN. To see these stocks in action, check out the at Most-Active Stocks portfolio on Stockpickr. -- Written by Jonas Elmerraji in Baltimore.