The Opening Bell is an important moment in the world of stock trading. It marks the official start of a securities exchange’s daily trading session, when buyers and sellers come together to trade stocks and other financial instruments. The time at which this takes place differs from one exchange to another, with some opening as early as 9:30am while others open later in the day or even overnight for certain markets around the world.At its core, what happens during an exchange’s opening bell is that traders are allowed access to their accounts so they can begin making trades on behalf of themselves or their clients. This process also involves setting up various buy/sell orders for different assets so that investors have access to them throughout the day if needed. In addition, exchanges use this time period as a way to set prices based on market conditions before any actual transactions take place – allowing traders more flexibility in how they manage their portfolios over time without having too much risk associated with it either way due solely from price changes happening rapidly after news announcements or other events occur outside normal hours (such as holidays).Overall then, understanding when each individual securities exchange opens for trading is essential for anyone interested in investing within those markets – whether it be through traditional methods such as buying/selling stocks directly or through more sophisticated strategies like short-term options contracts and derivatives products traded electronically via computer networks like NASDAQ OMX Nordic Exchange system today! With all these factors taken into consideration then we can see why knowing exactly when ‘the Opening Bell rings’ has become such an important part of modern finance industry worldwide - helping ensure stability across global economies by providing reliable pricing information no matter where you happen live & work.