BIST 100 closes 2.5 percent lower as MSCI freeze hits stocks
Published on 10/19/2026 at 18:43 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWSMSCI freeze pressures Turkish stocks
- BIST 100 closed at 11,430 points on October 19, down 292 points or 2.5 percent.
- MSCI's freeze and resignation news hit sentiment as turnover reached 106.1 billion Turkish liras.
- Tekfen Holding was the top loser, falling 10.0 percent, while Anadolu Grubu Holding gained 1.5 percent.
- The CBRT policy decision is due October 22, 2026, at 2:00 p.m. TRT, with a 36 percent rate expected.
BIST 100 closed at 11,430 points on October 19, down 292 points or 2.5 percent from the previous close, Anadolu Agency reports. The decline followed MSCI's freeze on some Turkish index changes and resignation news affecting market officials.
Tekfen Holding fell 10.0 percent, while Anadolu Grubu Holding gained 1.5 percent. The BIST 100 also faced broad selling, with 562 stocks falling against 72 gainers, Investing.com reports.
Why did BIST 100 fall on October 19?
MSCI froze certain changes to Turkish equity indexes after citing concerns about coordinated trading and free-float data. The decision followed market turmoil linked to investment-fund liquidations, Hurriyet Daily News reports.
Losses accelerated after reports that Capital Markets Board Chairman Mahmut Sutcu had resigned. The index finished at 11,430 points after reaching 11,397 points intraday, Borsa Gundemi reports.
Winners and losers in BIST 100
- Anadolu Grubu Holding up 1.5 percent.
- TAV Havalimanlari Holding up 1.3 percent.
- Sok Marketler up 1.1 percent, Investing.com reports.
- Tekfen Holding down 10.0 percent.
- Kirac Galvaniz down 10.0 percent.
- Turkiye Sigorta down 9.9 percent, Investing.com reports.
Banking was the only rising sector, gaining 0.3 percent. The financial leasing and factoring sector fell 7.4 percent, while holding companies lost 2.0 percent, according to Anadolu Agency.
BIST 100 swings from early gain to six-month low
The index opened at 11,746 points after Friday's 11,722-point close. It reached 11,768 points before falling to 11,397 points, with turnover at 106.1 billion Turkish liras. The close marked a new six-month low, Bloomberg HT reports.
What comes next for BIST 100
The next major domestic catalyst is the Central Bank of the Republic of Turkiye policy decision on October 22, 2026, at 2:00 p.m. TRT. Most economists expect a 100-basis-point cut from 37 percent to 36 percent, Hurriyet Daily News reports.
BIST 100 price data for October 19, 2026
BIST 100 closed at 11,430 points on October 19, 2026, down 292 points or 2.5 percent from the previous close of 11,722 points, Anadolu Agency reports. The index opened at 11,746 points and traded between 11,768 points and 11,397 points.
BIST 100 by the numbers on October 19, 2026
- Index: BIST 100
- Home exchange: Borsa Istanbul, Turkiye
- Close on October 19, 2026: 11,430 points
- Change versus previous close of October 16, 2026: down 292 points (down 2.5 percent)
- Previous close: 11,722 points
- Open: 11,746 points
- Day high / day low: 11,768 points / 11,397 points
- Top gainer: Anadolu Grubu Holding up 1.5 percent
- Top loser: Tekfen Holding down 10.0 percent
- Next scheduled event: October 22, 2026, 2:00 p.m. TRT: CBRT policy decision
