NEW YORK, July 24 /PRNewswire/ -- Standard & Poor's will make the following changes to the S&P 100, S&P 500, MidCap 400 and S&P SmallCap 600 indices:

- S&P 500 constituent Qualcomm Inc. (Nasdaq: QCOM) will replace Clear Channel Communications Inc. (NYSE: CCU) in the S&P 100, and DaVita Inc. (NYSE: DVA) will replace Clear Channel in the S&P 500 after the close of trading on Wednesday, July 30. Clear Channel is being taken private in a transaction expected to close on or about that date, pending final approvals.

- S&P SmallCap 600 constituent ANSYS Inc. (Nasdaq: ANSS) will replace TriQuint Semiconductor Inc. (Nasdaq: TQNT) in the S&P MidCap 400, TriQuint will replace ANSYS in the S&P SmallCap 600, and Eclipsys Corp. (Nasdaq: ECLP) will replace Ansoft Corp. (Nasdaq: ANST) in the S&P SmallCap 600 after the close of trading on Thursday, July 31. Ansoft is being acquired by ANSYS in a transaction expected to close on or about that date. Eclipsys was previously announced as a replacement for S&P SmallCap 600 constituent W-H Energy Services Inc. (NYSE: WHQ), which is in the process of being acquired by S&P 500 constituent Smith International Inc. (NYSE: SII). A new replacement for W-H Energy will be announced at a later date.

- John Bean Technologies Corp. (NYSE: JBTwi) will replace Planar Systems Inc. (Nasdaq: PLNR) in the S&P SmallCap 600 after the close of trading on Thursday, July 31. John Bean Technologies is being spun off by S&P MidCap 400 constituent FMC Technologies Inc. (NYSE: FTI) in a transaction expected to close on that date. As of today's close of trading Planar Systems had a market capitalization of approximately $50 million, whereas the minimum market cap a company must maintain in order to be eligible for addition to the index is $300 million.

Standard & Poor's will monitor these transactions, and post any relevant updates on its website: http://www.standardandpoors.com.

Headquartered in San Diego, CA, Qualcomm focuses on developing products and services based on its advanced wireless broadband technology.

DaVita provides integrated dialysis services for patients suffering from chronic kidney failure. Headquartered in El Segundo, CA, the company will be added to the S&P 500 GICS (Global Industry Classification Standard) Health Care Services Sub-Industry index.

ANSYS develops, markets and supports software solutions for design analysis and optimization.