⌘K
| Term | Full Term | Description |
|---|---|---|
| AIM | Alternative Investment Market | LSE's market for smaller, growing companies with lighter regulatory requirements than the Main Market |
| Ask | Ask Price (Offer Price) | The lowest price a seller is willing to accept for a security |
| Auction | Opening/Closing Auction | Price discovery mechanism used at market open and close to establish fair opening and closing prices |
| Bid | Bid Price | The highest price a buyer is willing to pay for a security |
| Closed-Ended Fund | Closed-Ended Fund | Investment fund with fixed capital that trades on exchanges, with shares priced by supply and demand |
| DTR | Disclosure Guidance and Transparency Rules | FCA rulebook setting disclosure and transparency requirements for UK-listed issuers |
| Dual Listing | Dual Listing | When a company's shares are listed and traded on two or more stock exchanges simultaneously |
| ETF | Exchange Traded Fund | Investment fund that tracks an index or basket of assets and trades on exchanges like a stock |
| FCA | Financial Conduct Authority | UK financial regulator responsible for conduct regulation of financial services firms and markets |
| Free Float | Free Float | Proportion of a company's shares available for trading by the public, excluding strategic holdings |
| GDR | Global Depositary Receipt | Negotiable certificate representing shares in a foreign company, tradable on international exchanges |
| Instrument | Financial Instrument | A tradable financial asset or contract representing ownership, debt, or rights |
| Investment Trust | Investment Trust | Closed-end fund structure listed on stock exchanges, commonly used in the UK market |
| ISIN | International Securities Identification Number | ISO 6166 standard 12-character alphanumeric code uniquely identifying securities globally |
| Issuer | — | The legal entity that creates and offers securities to investors |
| LEI | Legal Entity Identifier | ISO 17442 standard 20-character alphanumeric code uniquely identifying legal entities in financial transactions |
| Main Market | London Stock Exchange Main Market | LSE's regulated market for established companies, with Premium and Standard listing segments |
| MAR | Market Abuse Regulation | EU regulation (596/2014) prohibiting insider dealing, unlawful disclosure, and market manipulation |
| Market Capitalisation | Market Capitalisation | Total market value of a company's outstanding shares, calculated as share price multiplied by total shares in issue |
| Market Maker | Market Maker | Firm or individual that continuously provides buy and sell quotes for securities, facilitating liquidity |
| Market Sector | Market Sector Code | Code identifying the industry sector or classification of a listed security on an exchange |
| Market Segment | Market Segment Code | Code identifying the specific trading segment or market tier where a security is listed |
| MIC | Market Identifier Code | ISO 10383 standard code uniquely identifying securities markets and exchanges |
| Open-Ended Fund | Open-Ended Fund | Investment fund that can create or redeem shares on demand, with shares priced at net asset value |
| Order Book | Central Limit Order Book | Electronic record of all outstanding buy and sell orders for a security, organised by price level |
| Ordinary Shares | Ordinary Shares | Common equity shares with voting rights and participation in company profits and growth |
| PIP | Primary Information Provider | FCA-approved service for disseminating regulated information from listed companies |
| Placing | Placing | Method of issuing shares directly to selected institutional or sophisticated investors without a public offer |
| Prospectus | Prospectus | Formal disclosure document required when offering securities to the public or seeking admission to trading |
| RNS | Regulatory News Service | FCA-approved Primary Information Provider operated by the London Stock Exchange |
| RNS Headline Codes | Regulatory News Service Headline Codes | A consolidated reference of RNS headline codes for FCA, AIM, and Takeover Panel disclosures. |
| SEDOL | Stock Exchange Daily Official List | Seven-character alphanumeric code identifying securities traded on the London Stock Exchange |
| SETS | Stock Exchange Electronic Trading Service | LSE's electronic order book for the most liquid UK equities, including FTSE 100, FTSE 250, and other major stocks |
| SETSqx | Stock Exchange Electronic Trading Service - quotes and crosses | LSE's hybrid trading platform combining periodic auctions with market maker quotes for less liquid stocks |
| Spread | Bid-Ask Spread | The difference between the highest bid price and the lowest ask price for a security |
| TIDM | Tradable Instrument Display Mnemonic | A unique code used to identify securities on the London Stock Exchange |
| VWAP | Volume Weighted Average Price | Average price of a security weighted by volume traded at each price level during a specified period |