A Blotter is a digital record of all trades made over a period of time. This allows investors to see all the deals that were made during a trading day, and provides a way to track their performance. Each blotter entry includes the time, price, and quantity of the trade. This information can be very useful in analyzing your investment strategies and determining whether or not you are making money. The blotter should not be confused with the ticker tape, which is a display of stock prices that is updated in real-time.The layout and design of a blotter can vary depending on its intended use. In most cases, however, each trade will be listed along with its corresponding date, time, price and volume. Additional information may also be included such as the security being traded and any special conditions that were associated with the trade. Blotters can either be printed out or kept electronically in order to make them easier to access and analyze.Overall, using a blotter is an effective way to keep track of your trading activity and performance while also having a historical reference for future analysis.