Martin Marietta Fights Back at Einhorn

Hedge fund hot-shot David Einhorn, who runs Greenlight Capital, is about to give his big investment idea at the Sohn Conference.  He's the last speaker of the day. 

Investors are gathering at Lincoln Center in Manhattan today for the highly-anticipated 18th annual Sohn Investment Conference. Some of the world's top hedge fund managers will share their investment picks and views at the event that benefits the treatment of pediatric cancer and other childhood illnesses. The whole thing kicks off at noon.

The Ira Sohn Investment Conference is coming up in May. The high-profile hedge fund industry event brings together some of the top fund managers to present their investment views and picks. Business Insider will be there covering it. 

Business Insider was at the Sohn Investment Conference yesterday, and we'd just like to point out something that doesn't always get discussed in the world of finance — manners and etiquette.

NEW YORK (Reut