X10XB Index Constituents
Stocks in the X10XB index with their weights, last prices and daily changes.
- Constituents
- 10
- 3 ▲ · 7 ▼
- Index return · 1D
- −2.94%
- today
- Top 5 weight
- 82.1%
- TUPRS · ASELS · THYAO · EREGL · KCHOL
- Highest weight
- TUPRS
- 26.42% of index
Period Returns
- Day
- −2.94%
- Week
- −5.71%
- Month
- −10.65%
- YTD
- 38.06%
- 1 year
- 31.35%
Constituent Stocks
 TUPRSTüpraş | 26.42% | 389.00−2.32% | −2.32% | 749.5B | 10.42 | 1.66 | 6.19 | 4.00% |
 ASELSAselsan | 24.49% | 341.75−6.94% | −6.94% | 1.6T | 38.69 | 5.20 | 30.88 | 0.13% |
 THYAOTürk Hava Yollari | 13.92% | 291.751.66% | 1.66% | 402.6B | 3.60 | 0.40 | 7.01 | 1.03% |
 EREGLEreğli Demir Çelik | 8.85% | 37.12−0.96% | −0.96% | 259.8B | 34.02 | 0.82 | 12.28 | 1.36% |
 KCHOLKoç Holding | 8.39% | 215.200.56% | 0.56% | 545.7B | 14.41 | 0.69 | 22.29 | 3.68% |
 ASTORAstor Enerji | 7.09% | 211.70−9.99% | −9.99% | 211.3B | 18.86 | 4.82 | 16.78 | 1.34% |
 SASASasa Polyester | 3.05% | 1.901.06% | 1.06% | 99.8B | — | 0.52 | 19.68 | — |
 TRALTTürk Altin İşletmeleri | 3.05% | 45.62−2.23% | −2.23% | 146.1B | 26.90 | 2.76 | 13.63 | 1.45% |
 EKGYOEmlak Konut GMYO | 2.58% | 18.79−0.69% | −0.69% | 71.4B | — | 0.47 | 7.30 | 2.86% |
 PGSUSPegasus | 2.17% | 142.80−0.63% | −0.63% | 71.4B | — | 0.64 | 8.71 | — |
Other Indices
About the X10XB Index
The X10XB (X10XB) index has 10 constituents. The five heaviest weights are TUPRS (26.42%), ASELS (24.49%), THYAO (13.92%), EREGL (8.85%), KCHOL (8.39%), which together make up 82.1% of the index. As of Sep 29, 2026, 15:05, 3 constituents are up and 7 are down; the index has returned −2.94% today and 38.06% year to date.
Frequently Asked Questions
Which stocks are in the X10XB index?
The X10XB index has 10 constituents: TUPRS, ASELS, THYAO, EREGL, KCHOL, ASTOR, SASA, TRALT, EKGYO, PGSUS.
Which stock has the highest weight in the X10XB index?
TUPRS is the largest constituent with a weight of 26.42%, followed by ASELS (24.49%) and THYAO (13.92%).
Is TUPRS in the X10XB index?
Yes. TUPRS is a constituent of the X10XB index with a weight of 26.42%. You can see any stock’s index memberships in the Index Memberships section of its stock page.
How are index weights determined?
In Borsa Istanbul indices each stock is weighted by its free-float market cap, with a cap on any single stock set by the index rules. Weights move intraday with prices.