Today marks the IPO of online real estate database Zillow, and the company has taken one of the few remaining single letter stocks.
Last month Pandora nabbed the letter P. There are now only 5 such tickers left. They are: I, J, Q, U, and W.
But which firms hold the other single letter tickers? Based on the dates we found, the first single letter company, Alleghany Corporation, listed on the NYSE in 1929.
Public offering: Associated Spring was listed on the NYSE in 1963 and changed its name to Barnes Group in 1969.
What they do: Barnes Group is a diversified company that engineers and manufactures precision metal components and distributes a broad range of maintenance, repair, operating and production supplies.
Source: Barnes Group
Public offering: Eni S.p.A' ADRs were first listed on the NYSE on November 28, 1995.
What they do: ENI S.p.A is an Italian multinational oil and gas company that operates in five segments that include exploration and production, gas and power, refining and marketing, petrochemicals and other segments.
Public offering: November 5, 2009
What they do: Hyatt Hotels Corp. is a global operator of hotels and is headquartered in Chicago. Its hotels and resorts operate under five brands, Park Hyatt, Andaz, Grand Hyatt, Hyatt Regency and Hyatt.
Public offering: May 12, 1959
What they do: Kellogg Company is producer of cereal and other convenience goods. It markets its products under brands like Kellogg's, Keebler, Cheez-It, Murray, Austin and Famous Amos.
Public offering: March 13, 1959
What they do: Run by the Tisch Family Loews Corporation is a diversified company that operates in commercial property and casualty insurance, oil and gas, interstate pipelines and hotels.
Public offering: December 20, 2007
What they do: Founded in 1988 as NetLedger, NetSuite Inc. is a seller of cloud computing software, specifically business management products. It was founded by Larry Ellison.
Public offering: Ryder System was listed on the NYSE on September 19, 1960.
What they do: Ryder System Inc. is an American-based provider of transportation and supply chain management solutions. It was created in 1955 to absorb Ryder Truck Rental and Great Southern.
Public offering: AT & T was first listed on the NYSE on November 21, 1983. AT&T and SBC merged in 2005 and the merged company's symbol was changed from 'SBC' and 'T'.
What they do: AT&T is a telecommunications operator and and operates in four segments that include wireless services, wireline, tv and high-speed broadband services and advertising solutions.
Public offering: The company listed on the NYSE on April 12, 1991
What they do: United States Steel Corporation is an integrated steel producer that operates in U.S., Canada and Central Europe.