Clearstream International clearing and settlement organisation, offering comprehensive services for domestic and cross-border equities, bonds and investment funds.
http://www.clearstream.com/
CREST Provides real-time settlement for a comprehensive range of UK and international shares, UK government bonds and other corporate securities.
http://www.crestco.co.uk/
London Clearing House Clears for the International Petroleum Exchange (IPE), London International Financial Futures and Options Exchange (LIFFE), the London Metal Exchange (LME), the London Stock Exchange, and the over-the-counter interest-rate swaps (OTC IRS).
http://www.lch.co.uk/
Options Clearing Corporation OCC is the issuer and registered clearing facility for all U.S. exchange-listed securities options, including those traded on the American Stock Exchange, the Chicago Board Options Exchange, the Pacific Exchange, the Philadelphia Stock Exchange and T
http://www.optionsclearing.com/
SIS The result of the 1999 merger of SEGA Swiss Securities Clearing Corporation and InterSettle; SIS is the national Central Securities Depository (CSD) of the Swiss financial market and an international central securities depository.
http://www.sec.sisclear.com/