Methodologies and Changes

Current Methodologies and Methodology changes of the Indices, administrated by Borsa Istanbul, can be followed on this page.

Methodology changes can be classified as “Material”, “Non-Material” or “Urgent Material”.

Methodology changes, defined as “Material” by Borsa Istanbul, are open to consultation of stakeholders on this page, and comments can be submitted until the “Deadline for Consultation”. A summary of the submitted comments (only those that are permitted by the commenter) and Borsa Istanbul's evaluations regarding those comments are published on this page after the relevant changes put into effect.

“Non-Material” and “Urgent Material” changes can be put into effect without consultation.

Methodology Changes in Consultation Process

2025

Name of the Change                       :    Changes to the BIST Market Cap Weighted Stock Indices Methodology

Change Number Opened for         :    2025-1

Consultation                            

Index Family                                      :    BIST Stock Indices

Planned Commissioning Date       :    September 1, 2025

Comment Expected?                       :    Yes

Deadline for Comments                  :    August 15, 2025

Posting Date of Opinions                :    August 25, 2025

Click Here for Detailed Information.

Methodology Changes in Effect
 

BIST Stock Indices

BIST-KYD Indices

BIST Sustainability Themed Debt Securities Indices

BIST Commodity and Commodity Denominated Securities Indices

BIST Strategy Indices

TLREF

TLREFK

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