endeks

Endeks is the Turkish word for index, a statistical measure that aggregates a set of data points into a single number to represent changes over time. Indices are used to track relative movements in prices, outputs, or market performance and to provide benchmarks for comparison.

In finance, stock indices monitor the performance of a group of listed companies. They are constructed by selecting components, assigning weights, and calculating a value relative to a base period. The base is typically set to a round number, such as 100, and subsequent values express percentage changes from that base. Indices serve as indicators of market sentiment, economic health, and investment trends, and they are used to create financial products like index funds and derivatives.

Beyond stocks, price indices such as the consumer price index (CPI) and the producer price index (PPI) track changes in the level of prices for goods and services over time. These indices are essential for measuring inflation, adjusting monetary policy, and indexing wages or contracts. Indices can also cover broader measures like costs of living, productivity, or economic activity.

In Turkish finance and media, the term Endeks is commonly used to refer to stock market indices reported for Turkish markets, including the Borsa İstanbul. The word is generally used interchangeably with endeksi in contexts describing overall market performance or specific benchmark indices.

Limitations of indices include dependence on component selection, weighting schemes, and base year choices, which can influence interpretation. Despite these limitations, indices remain fundamental tools for analysis, investment, and policy guidance.