Allied World, BP, Exxon, Lan Airlines, Tam: U.S. Equity Preview

Shares of the following companies may have unusual moves in U.S. trading on Aug. 16. Stock symbols are in parentheses.

Allied World Assurance Co. (AWH US): The Bermuda-based insurer said it paid Chubb Corp. (CB US) $32.8 million to repurchase a warrant.

BP Plc (BP US): Bruce Berkowitz’s Fairholme Capital Management LLC added 9.44 million shares of the oil producer during the second quarter, according to a regulatory filing today. Mackenzie Financial Corp., a unit of Canada’s IGM Financial Inc., and Renaissance Technologies LLC, the hedge-fund firm founded by James Simons, also increased their holdings during the quarter.

Exxon Mobil Corp. (XOM US): The world’s second-largest producer of oil from deep-water wells said it shut down a pipeline in Torrance, California, after a valve “issue” was detected, according to a filing with state regulators. Exxon is investigating.

Tam SA (TAM US): Lan Airlines SA (LFL US), the Chilean carrier, offered to exchange 0.9 of its shares for each share of Tam, Brazil’s biggest airline. The new company will be called Latam Airlines Group SA, according to a regulatory filing.