As Hedge Funds Go Mainstream, Risk Is Magnified By Ben White Washington Post Staff Writer Thursday, August 11, 2005; D01 NEW YORK -- In 1990, there were about 600 hedge funds with $38 billion in assets. Today, there are about 8,000 with more than $1 trillion in assets. Estimates suggest that hedge fund trading can account for as much as half the daily volume on the NYSE...... Worst-Case Scenario The regulators and executives say the worst-case result of the industry's blistering growth and light regulation would be a repeat of 1998, when the near-collapse of hedge fund Long-Term Capital Management...