Turkey and Frontier Stocks: BIST 100, PSX, TASE, Merval — 2026-09-15
Turkey’s BIST 100 closed significantly lower on September 14 after the Central Bank held rates at 37%, while Pakistan’s KSE-100 suffered a sharp sell-off due to Middle East tensions. Argentina’s Merval faced pressure from global oil volatility and rising country risk, despite a brief energy-sector rally.
Turkey and Frontier Stocks: BIST 100, PSX, TASE, Merval — 2026-09-15
Top developments
Turkey: BIST 100 drops 1.6% after CBRT holds rates at 37%
On September 14, the Borsa Istanbul (BIST) 100 index fell 1.60% to close at 14,235.83 points. The decline followed the Central Bank of the Republic of Türkiye (CBRT) decision to hold its key policy rate at 37% for the fifth consecutive meeting, citing the need to maintain restrictive conditions until price stability is achieved. The banking index fell as much as 1.2% during the session, and the lira hovered near 48.49 against the US dollar as traders reacted cautiously to the hawkish stance.
Pakistan: KSE-100 plunges on Middle East tensions
Pakistan’s benchmark KSE-100 index experienced severe volatility, losing approximately 1,500 points at the open on Monday, September 14, following heightened geopolitical tensions in the Middle East. The sell-off continued into the next day, with the index dropping another 2,127 points, reflecting investor anxiety over regional instability and potential impacts on trade routes. Earlier in the week, the market had shown mixed signals, with a 1,646-point gain on September 11, but the geopolitical shock reversed these gains.
Argentina: Merval slips as risk rises and oil swings
Argentina’s S&P Merval index closed lower on September 14, retreating from earlier gains driven by the energy sector. While YPF shares initially rose 2.7% in Wall Street ADRs due to a 4% spike in oil prices, the broader market was weighed down by a rise in country risk to 490 basis points. The Central Bank of Argentina (BCRA) purchased only USD 12 million in the foreign exchange market, signaling limited intervention amid global caution.
Local view
In Turkey, Borsaningundemi noted that despite the Tuesday close being positive (+1.79%), the momentum faded by Monday, September 14, with the index opening down 0.88% at 14,339.28 points before closing sharply lower. Local media highlighted that only the chemical, petroleum, and plastics sectors rose during the Monday opening session, while banking and holding indices dragged the market down.
In Pakistan, Urdu-language outlets like WE News and M News emphasized the psychological impact of the Middle East conflict, describing the KSE-100's drop as a "severe bearish trend" driven by external shocks rather than domestic fundamentals.
Context & numbers
- BIST 100: Closed at 14,235.83 (-1.60%) on Sept 14; opened at 14,339.28 (-0.88%) on Sept 14.
- KSE-100: Dropped ~1,500 points on Sept 14 open; lost another 2,127 points on Sept 15; had gained 1,646 points on Sept 11 to reach 170,511.
- Merval: Country risk (EMBI) rose to 490 basis points on Sept 14; YPF ADRs +2.7%; BCRA FX purchases $12 million.
- Turkish Lira: Traded near 48.49 per USD on Sept 10.
- Policy: CBRT held rate at 37%; experts suggest conditions are "falling into place" for a cut next month.
On the radar
- Turkey Rate Cut Rumors: Following the hold, analysts are watching for signs of a potential rate cut in October as inflation data stabilizes.
- Middle East Impact on PSX: Continued monitoring of KSE-100 volatility as regional tensions persist.
- Argentina Inflation Data: Markets remain attentive to the upcoming August inflation release, which will influence BCRA policy and bond yields.
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