Tech exposure rapidly rising out of control

The enthusiasm for tech stocks is now reaching manic levels with worrying implications for anyone holding an equity unit trust. Not only are the tech stocks creating a narrow leadership in the world's main indices but an extremely high proportion of fund managers have accepted the theory that technology is good and everything else is bad. They might be right long term but what exactly is the tech exposure that each fund manager has, either in pure plays on the market such as internet companies, or in those that benefit from using technology? And what will happen to both these areas when th...