Regulation - some countries have central banks as regulators to ensure financial institutions aren't partaking in risky activities leading to a collapse
FSCS (Regulator):
provides an £85,000 deposit insurance for the consumer if the bank goes bust/runs out of money
Asymmetricinformation - when one party has more information than the other, preventing one from making a rational decision
Externalities - the cost that third parties pay that the financial market does not pay eg. taxpayers after 2008
MarketBubble - when the price of assetsrise hugely, then fall usually a result of herd behaviour
Marketrigging - where a group collude to fix prices or limit supply
Insider trading -
eg. Martha Stewart sold 4 thousand ImClone shares a day before the stock plummented
Regulatorycapture - when the regulators are influenced to be biased as they are related in the industry (friend, ex-worker)