Turkey and Frontier Stocks: BIST 100, PSX, TASE, Merval — 2026-10-23
Turkey’s central bank executed its first rate cut in nine months, lowering the benchmark to 36%, which triggered a sharp sell-off in the BIST 100. Meanwhile, Argentina’s country risk spiked above 700 points as Merval stocks declined, contrasting with a strong rally in Pakistan’s KSE-100 index. The Turkish lira weakened following the policy decision, while global market volatility impacted frontier assets across the region.
Turkey and Frontier Stocks: BIST 100, PSX, TASE, Merval — 2026-10-23
Top developments
Turkey: First rate cut in 9 months triggers BIST 100 plunge
The Central Bank of the Republic of Turkey (TCMB) cut its benchmark interest rate to 36% from 37% on Thursday, October 22, marking its first reduction in nine months. Despite the expected easing, the BIST 100 index closed sharply lower, losing 3.08% to finish at 11,220.37 points, with 95 of the index's constituents declining. The sell-off was driven by concerns over inflation persistence and high energy prices, which the central bank cited as ongoing risks.
Argentina: Country risk breaches 700-point threshold
Argentina’s country risk index surged past 700 points, reaching highs not seen recently as sovereign bonds fell and the Merval index declined. The MSCI Merval index lost 1.5%, with local stocks falling up to 6% in Wall Street trading amid global tech sector volatility. The Argentine peso in the parallel market weakened, with the retail dollar hitting a nominal high of 1,550 pesos at the Banco Nación.
Pakistan: KSE-100 rallies nearly 800 points
In contrast to the regional downturn, the Pakistan Stock Exchange (PSX) KSE-100 index closed 779 points higher, finishing at 165,930 points. The rally reflects positive investor sentiment and stability in the local currency, with the index showing resilience against global headwinds that pressured other frontier markets.
Local view
Turkish financial media highlighted the immediate negative reaction of the BIST 100 to the TCMB's rate decision, noting that the index opened lower and deepened losses throughout the session. Analysts pointed to a "sell-off" pattern as investors digested the first easing in nine months, with banking and holding sectors leading the decline. In Argentina, La Nación reported that sovereign bonds ended the day lower as the country risk rebounded, despite a general upward trend in local stocks in earlier sessions.
Context & numbers
- Turkey TCMB Rate: Cut to 36% (from 37%).
- USD/TRY: The lira traded at 49.6275 following the rate decision, slightly weaker than the previous close of 49.6025.
- BIST 100 Close: 11,220.37 points (-3.08%).
- Argentina Country Risk: Exceeded 700 points.
- Argentina Retail Dollar: Reached 1,550 ARS.
- Pakistan KSE-100: Closed at 165,930 points (+779 points).
On the radar
- Turkey Inflation Data: Investors are closely watching for upcoming inflation prints to see if the 36% rate cut is sufficient to anchor expectations, as the TCMB warned that energy prices remain a key risk.
- Argentina Debt Management: Market participants are monitoring the central bank's (BCRA) intervention levels after it purchased $61 million in the market to stabilize the peso as risk premiums spiked.
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