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OYAKC Index Memberships and WeightsOyak Çimento Fabrikaları A.Ş.

Star MarketNon-Metallic Mineral Products

20.46−0.10 (−0.49%)

Volume: TRY 7.7M
Day range: 20.42 – 20.60
Previous close: 20.56
Market cap: TRY 99.5B

Last updated: October 13, 2026, 10:05 Source: Borsa Istanbul, 15-minute delayed

The Borsa Istanbul indices that include Oyak Çimento Fabrikaları A.Ş. (OYAKC), its weight in each index and its effect on index points.

Index Memberships


BIST 100 (XU100)
BIST 50 (XU050)
BIST 500 (XU500)
BIST All Shares (XUTUM)
XELOT (XELOT)
XELOS (XELOS)
XELOC (XELOC)
XYUZO (XYUZO)
X100S (X100S)
X100C (X100C)
BIST Star (XYLDZ)
BIST Corporate Governance (XKURY)
BIST Sustainability All (XUSRD)
XSD25 (XSD25)
BIST Industrials (XUSIN)
XSINS (XSINS)
BIST Non-Metallic Minerals (XTAST)
XSANK (XSANK)

Frequently Asked Questions

Is OYAKC in the BIST 100 index?

Yes. OYAKC is a BIST 100 constituent.

Why does index weight matter?

Index funds and benchmark-tracking institutions hold stocks in proportion to their weights, so a higher weight means index-driven flows have a larger effect on the stock.