What is hf trading?

High-frequency trading (HFT) is an automated trading platform that large investment banks, hedge funds, and institutional investors employ. It uses powerful

High-Frequency Trading is a trading practice in the stock market for placing and executing many trade orders" · Uploaded by QuantInsti Quantitative Learning

High-frequency trading, also known as HFT, is a method of trading that uses powerful computer programs to transact a large number of orders in fractions of a second. Typically, the traders with the fastest execution speeds are more profitable than traders with slower execution speeds.

They don't work at stock exchanges or banks. They work at hedge funds, and trade at whiz-bang speeds. These "high-frequency traders" (HFT)