(Bloomberg) -- BlackRock and State Street, along with more than a dozen industry participants, are urging regulators to take steps to ward off extreme market volatility after the stomach-churning price swings of last August.

Subscribe Now

Access to premium content including in-depth coverage of mutual funds, hedge funds, 401(K)s, 529 plans, and more.

3-Week Free Trial

Insight and analysis into the management, marketing, operations and technology of the asset management industry.