U.S. stocks nearly unchanged after Facebook Inc.’s trading debut and ongoing uncertainty about how Europe’s debt troubles will play out.

Derivatives regulation being drafted by regulators and a tougher Volcker rule will be enough to prevent other banks from suffering losses similar to J.P. Morgan Chase’s surprise $2 billion-plus trading loss, Rep. Barney Frank says.

June gold is back on the rise, within hailing distance of $1,600, as the dollar turns lower following a long winning streak for the greenback.

Treasury prices are set for another week of gains, with 10-year note yields extending their losing streak to a ninth-straight session as traders awaited comments from global officials at the weekend’s Group of Eight meeting.

The deal and its aftermath could unleash investor demand to get in on the ground floor of the next wave of public offerings in social networking and other fast-growing parts of the technology sector.

MarketWatch’s daily rundown of shares making sizable moves in the U.S. stock market.

Experts explore the pressures that Facebook CEO Mark Zuckerberg will face after the social networking giant’s IPO.

A MarketWatch column on May 18 about social-media site Twitter’s adoption of a “Do Not Track” feature gave incorrect information about which Internet browsers support the new feature, and incorrectly described Twitter’s use of computer cookies.

Twitter is adopting a “Do Not Track” feature that the social-media site’s users can tap to help guard their privacy. But it’s not a cure-all, writes Jennifer Waters.

Sometimes, a landlord either can’t or won’t help tenants deal with noisy neighbors, Lew Sichelman writes in the Realty Q&A column today. What’s the solution? It’s a tough one—sometimes you just have to call the cops.