 Kirby Corp. KEX, 3.33 stock rose 2 in premarket trades Monday after the company said it remains open to opportunities to maximize value after wrapping up a strategic review of its distribution and services business. The Houston company said the market for mergers and acquisitions remains constrained partly because of a higher cost of borrowing to finance deals, but it will continue to weigh any and all opportunities for both its marine transport as well as its distribution and services businesses. 