NEW YORK, June 25, 2012 /PRNewswire/ -- Seagate Technology plc (NASD:STX) will replace Progress Energy, Inc. (NYSE:PGN) in the S&P 500 index after the close of trading on Friday, June 29. S&P 500 constituent Duke Energy Corp. (NYSE:DUK) is acquiring Progress Energy in a deal expected to close soon pending final approvals.

Seagate Technology designs, manufactures, markets, and sells hard disk drives. Headquartered in Dublin, Ireland, the company will be added to the S&P 500 GICS (Global Industry Classification Standard) Computer Storage & Peripherals Sub-Industry index.

Following is a summary of the change:

About S&P Indices

S&P Indices, a leading brand of the McGraw-Hill Companies (NYSE:MHP), maintains a wide variety of investable and benchmark indices to meet an array of investor needs. Over $1.45 trillion is directly indexed to our indices, which includes the S&P 500, the world's most followed stock market index, the S&P/Case-Shiller Home Price Indices, the leading measure of U.S. home prices, the S&P Global BMI, an index with approximately 11,000 constituents, the S&P GSCI, the industry's most closely watched commodities index, and the S&P National AMT-Free Municipal Bond Index, the premier investable index for U.S. municipal bonds. For more information, please visit: www.standardandpoors.com/indices.

It is not possible to invest directly in an index. S&P Indices does not sponsor, endorse, sell, or promote any S&P index-based investment product. This document does not constitute an offer of services in jurisdictions where S&P Indices or its affiliates do not have the necessary licenses. S&P Indices receives compensation in connection with licensing its indices to third parties.

For more information:
Dave Guarino
Communications
S&P Indices
dave_guarino@standardandpoors.com
212-438-1471

David Blitzer
Managing Director and Chairman of the Index Committee
S&P Indices
david_blitzer@standardandpoors.com
212-438-3907

SOURCE S&P Indices