Businesses in the administration of financial markets operate or manage organised markets where financial instruments or commodities are traded. These may include securities exchanges, derivatives and futures markets, and other regulated trading venues. Their work centres on providing the systems, rules and operational arrangements that allow buyers and sellers, or their intermediaries, to trade in an orderly way. Typical services include maintaining electronic trading platforms, setting market procedures, admitting instruments to trading and publishing information about market activity. Operators may monitor trading for unusual activity, manage trading schedules and interruptions, and provide price, volume and other market data to participants. They may also coordinate with issuers, brokers, clearing organisations and regulators. These businesses administer the marketplace itself; they are distinct from firms that give personal investment advice or manage customers' portfolios.