Maximum Adverse Excursion (MAE) measures the largest unrealized loss a position experienced between entry and exit, used in journals to audit stop-loss efficiency.
Model risk is the possibility that a model's output is wrong, misleading, or unfit for the decision it is feeding. In trading it covers both statistical models and AI assistants.
Monetary-policy transmission is the chain through which central-bank decisions affect financial conditions, spending, investment, employment, and inflation over time.
Negative correlation describes two assets that tend to move in opposite directions, providing the mathematical basis for diversification and downside protection.
OHLC is the four-price summary of a fixed time window: the first and last traded prices, plus the highest and lowest. It records boundaries, not the path in between.
Open interest is the number of outstanding futures or options contracts that have not been closed, expired, or exercised. It measures contract stock, not trade direction by itself.
Out-of-sample testing evaluates a finished trading strategy on fresh historical data that was never used during rule design, providing an honest reality check.
Paper trading practices order execution, sizing calculations, and rule discipline in live market conditions using simulated funds rather than real capital.
Pattern recognition in trading is matching chart shapes to predefined geometric rules, either by eye or by software. A match is a candidate, not a validated setup.
PMI surveys business activity and uses 50 as the key expansion-contraction threshold. Learn how investors interpret manufacturing and services PMI releases.
Position size is the quantity of an asset you hold or control. It converts a risk budget and an invalidation distance into a concrete number of shares, contracts, or units.
Position sizing determines how much exposure a trade should take. Account size, maximum acceptable loss, and stop distance matter more than how confident you feel about the idea.
Price discovery is the process through which new information changes bids, asks, and transaction prices. Markets react to information relative to expectations, not to headlines in isolation.