DELTA, in securities trading, is the relationship between an option price and the underlying futures contract or stock price. In general usage, it is the difference between two empirical data points, e.g. the delta between 4 and 6 is 2.
BANK FOR INTERNATIONAL SETTLEMENTS (BIS) is the central bankers' bank based in
CONCENTRATION RISK is the risk that an investor will suffer from lack of diversification, investing too heavily in one industry, one geographic area or one type of security.
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