Here is another batch of news briefings which could affect stocks on world markets in trading later today.

The following listed companies should see some movement: JP Morgan Chase & Co. (NYSE:JPM), Hewlett-Packard Co. (NYSE:HPQ), American International Group (NYSE:AIG).

Here is a more detailed look at the news that will affect each company when trading continues.

JP Morgan Chase & Co. (NYSE:JPM)

Greg Baer of Bank of America has been picked up by J.P. Morgan Chase & Co. (NYSE:JPM). During the time of the financial crisis, dealings with elected officials and the regulators were mainly handled by Mr. Baer, and the move is sure to affect Bank of America’s plans to get firm footed in Washington DC.

People who are familiar with the matter say Mr. Baer is expected to join the company by the end of this month.

Hewlett-Packard Co. (NYSE:HPQ)

Legal moves are being made by Hewlett-Packard (NYSE:HPQ) against its former chief executive. Oracle, which is both a partner and rival of Hewlett-Packard (NYSE:HPQ), has made Mark Hurd its co-president and appointed him to its board of directors – thus increasing the fued between the two technology giants.

Hewlett-Packard (NYSE:HPQ) has filed a lawsuit to stop Mark Hurd taking the role, in fears that he may disclose trade secrets to the rival.

American International Group (NYSE:AIG)

An ex-American International Group (NYSE:AIG) executive has been hired by Willis Group to run a new business. The new business is aimed at big corporate customers of rivals Marsh & McLennan Cos. and Aon Corp.

Willis said in a statement that ”This new unit will distinguish the company as a significant player in the global marketplace, positioned to serve the world’s largest clients and challenge entrenched brokers who have a significant share of multinational business”.

We may see more movement when trading continues for JP Morgan Chase & Co. (NYSE:JPM), Hewlett-Packard Co. (NYSE:HPQ) and American International Group (NYSE:AIG).