BIST 100’s Erratic Start to the Week

Turkey’s benchmark BIST 100 index edged higher at the open on Monday, gaining 0.61% to 14,028.40 points from Friday’s close of 13,943.87. By 13:00 local time, however, the index had reversed course, slipping 0.09% to 13,931.69, after trading as low as 13,899.44 and as high as 14,085.39 during the first half of the session.

Sector performance was mixed. The services index rose 1.11% and the financials index added 0.22%, while the industrials index lost 0.43% and the technology index slumped 2.08%. Among BIST 100 constituents, 53 stocks advanced, 41 declined and six were unchanged. The most actively traded names were Turkish Airlines, ASELSAN, Akbank, Katılımevim Tasarruf Finansman, and Yapı ve Kredi Bankası.

In currency markets, the Turkish lira traded at 47.3580 to the dollar and 54.0110 to the euro in Istanbul’s free market. Global majors saw the euro/dollar at 1.1400, sterling/dollar at 1.3330 and dollar/yen at 163.5. Spot gold rose 1% to $4,100 per ounce, while London Brent crude for October delivery plunged 7.1% to $85.2 a barrel.

Behind the Midday Moves: Sector Divergence and Global Cues

Sector Split Highlights Diverging Sentiment

The 2.08% drop in the technology index stood out as the session’s weak spot, possibly reflecting profit-taking after recent gains or a spillover from soft global tech sentiment. In contrast, the 1.11% rise in services suggests that investors rotated into domestic-demand-oriented names, possibly supported by steady banking and tourism-linked stocks.

Most Active Stocks Reflect Key Economic Themes

The heavy turnover in Turkish Airlines, ASELSAN and the major banks underscores the market’s current focus on tourism, defense and financials. ASELSAN’s presence among the most traded names could indicate continued interest in defense industry shares amid ongoing modernization programs, while banks benefit from high nominal rates. The inclusion of Katılımevim, a savings-finance company, points to the growing footprint of interest-free financing instruments in Turkish retail portfolios.

Gold Surges Past $4,100 as Oil Tumbles

Gold’s climb to $4,100 an ounce is a psychological milestone, likely driven by safe-haven demand in the face of global uncertainty or dollar weakness. The 7.1% crash in Brent crude, on the other hand, warrants caution. Such a sharp intraday move on Monday could stem from demand-side fears—perhaps a gloomy economic outlook from a major consumer—or a sudden supply-side release. For Turkey, a net energy importer, cheaper oil is a mixed blessing: it eases the current account but can hurt energy-linked equities.

What to Watch for the Rest of the Session

  • With BIST 100 trading near 13,931, monitor whether it holds the intraday low of 13,899.44 as support. A decisive break below that level could trigger a retest of last week’s lows around 13,850.
  • The 7.1% plunge in Brent crude may weigh on Turkish energy stocks such as Tüpraş and oil service companies if the slump extends into the afternoon fix; energy-sector ETF flows or single-stock volume spikes could confirm the pressure.
  • Gold above $4,100 could provide a tailwind for mining plays like Koza Altın, which tends to track the bullion price closely. A sustained move above $4,050–4,100 might attract additional local investor interest in the yellow metal.
  • Currency traders should note the lira’s relative stability at 47.36 to the dollar. A break above 47.50 in USD/TRY, if accompanied by rising volume, might reignite intervention speculation and affect expectations for the central bank’s next policy move.