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BIST 30 index

BIST 30 is the index of Borsa Istanbul’s 30 largest and most liquid stocks and the underlying of futures and options contracts. BIST 30 covers the 30 stocks in BIST 100 with the largest free-float market cap and traded value.
Contents
  1. 1.Key points
  2. 2.Formula / calculation
  3. 3.Interpretation
  4. 4.Pitfalls
  5. 5.Frequently asked questions

Key points

  • Because institutional and foreign investors trade these stocks most, it is also known as the "big board"; it is the underlying asset of index futures and options on VIOP.
  • BIST 30 best reflects foreign and institutional flows; its divergence from BIST 100 shows the preference between large and small caps.
  • with only 30 stocks, a few names can drive the index.

Formula / calculation

it is computed the same way as BIST 100, weighted by free-float market cap. The constituent list is reviewed quarterly; inclusions and exclusions move stock prices because index funds must trade them.

Interpretation

BIST 30 best reflects foreign and institutional flows; its divergence from BIST 100 shows the preference between large and small caps. The gap between the futures price and the spot index (basis) reflects market expectations.

Pitfalls

with only 30 stocks, a few names can drive the index. Index futures are leveraged and carry separate risks. Misreading the BIST 30 versus BIST 100 gap can mislead.

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Frequently asked questions

BIST 30 is the index of Borsa Istanbul’s 30 largest and most liquid stocks and the underlying of futures and options contracts.

it is computed the same way as BIST 100, weighted by free-float market cap. The constituent list is reviewed quarterly; inclusions and exclusions move stock prices because index funds must trade them.

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