Day Trading Buying Power Call

buying power
Purchasing power is the number of goods/services that can be purchased with a unit of currency. For example, if you had taken one dollar to a store in the 1950s, you would have been able to buy a greater number of items than you would today, indicating that you would have had a greater
the resources, especially financial, that customers have at a given time.
The value of a particular amount of money, measured in terms of what goods and services it can buy.

day trading
Day trading refers to the practice of buying and selling financial instruments within the same trading day such that all positions are usually closed before the market close for the trading day. Traders that participate in day trading are called active traders or day traders.
The buying and selling of securities on the same day, often online, on the basis of small, short-term price fluctuations
(Day traders) come to market each day flat (no position) and leave the day flat. Their behavior is very short-term and often emotional.
(Day traders) hold stocks for minutes to hours making numerous trades each day usually with a cursory understanding of the companies they trade.  These investors rely on timing and minimize risk by buying and then immediately selling.

call
Shout out or chant (the steps and figures) to people performing a square dance or country dance
a telephone connection; "she reported several anonymous calls"; "he placed a phone call to London"; "he heard the phone ringing but didn't want to take the call"
name: assign a specified (usually proper) proper name to; "They named their son David"; "The new school was named after the famous Civil Rights leader"
Cry out (a word or words)
Cry out to (someone) in order to summon them or attract their attention
a special disposition (as if from a divine source) to pursue a particular course; "he was disappointed that he had not heard the Call"