Trading Basics
Bid-Ask Spread
The difference between the price the trader and buy at and the price they can sell at.
Also bid-offer spread. The wider the spread, the more the trader pays, reactively.
Other Trading Basics
Buyback
When companies purchase their own shares.
This reduces the amount of shares issued.
Alpha
This is a measure of price performance vs a benchmark.
If a trader makes 10% per annum and the index makes 7% the trader has an alpha of 3%.
Bear Raid
When bears team up to push the price of a security down, normally by short selling and/or rumours.
This is illegal.
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