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/Glossary

Financial Markets Glossary

Essential terminology and definitions for understanding financial markets, trading, and corporate structure.

All TermsMarket DataCorporate StructureTradingRegulationFinancial Instruments
TermFull TermDescription
AIMAlternative Investment MarketLSE's market for smaller, growing companies with lighter regulatory requirements than the Main Market
DTRDisclosure Guidance and Transparency RulesFCA rulebook setting disclosure and transparency requirements for UK-listed issuers
FCAFinancial Conduct AuthorityUK financial regulator responsible for conduct regulation of financial services firms and markets
Main MarketLondon Stock Exchange Main MarketLSE's regulated market for established companies, with Premium and Standard listing segments
MARMarket Abuse RegulationEU regulation (596/2014) prohibiting insider dealing, unlawful disclosure, and market manipulation
PIPPrimary Information ProviderFCA-approved service for disseminating regulated information from listed companies
PlacingPlacingMethod of issuing shares directly to selected institutional or sophisticated investors without a public offer
ProspectusProspectusFormal disclosure document required when offering securities to the public or seeking admission to trading
RNSRegulatory News ServiceFCA-approved Primary Information Provider operated by the London Stock Exchange
RNS Headline CodesRegulatory News Service Headline CodesA consolidated reference of RNS headline codes for FCA, AIM, and Takeover Panel disclosures.