Final answer:
High frequency trading is considered new, while algorithmic trading is not.
Step-by-step explanation:
High frequency trading is considered a new trading strategy, while algorithmic trading is considered an established strategy.
High frequency trading involves the use of powerful computers and complex algorithms to execute a large number of trades in fractions of a second. It relies on speed and technology to quickly capitalize on small price fluctuations in the market. On the other hand, algorithmic trading involves the use of predefined sets of rules or instructions to automatically execute trades. It doesn't necessarily rely on speed, but rather on the logic and efficiency of the algorithms.