1. Day's Data (summary)
| Indicator | Value |
|---|---|
| Date | October 16, 2026, Friday, at 08:18 |
| BIST 30 (XU030) last close | 14,986.78 |
| BIST 30 previous close | 15,047.87 |
| BIST 30 daily change | -0.41% |
| BIST 100 (XU100) last close | 12,070.17 |
| BIST 100 previous close | 12,118.29 |
| BIST 100 daily change | -0.40% |
| USD/TRY | 49.48 ( previous 49.41, daily +0.16%) |
| BIST 30 daily performance in dollar terms | -0.56% |
2. Market Outlook and Transmission Mechanism
As of October 16, 2026, Friday, at 08:02 — BIST 30 (XU030) last close 14.986.78; previous close 15.047.87 (daily -0.41%); daily performance in dollar terms -0.56%. The index's loss in TRY terms, combined with the +0.16% increase in USD/TRY, deepens the dollar-based loss even further. This divergence indicates that the selling pressure stems not only from local risk appetite but also from the exchange rate movement eroding the returns of TRY assets. XU030 trading just below the 15.000 psychological support confirms that this level is critical for short-term direction.
Transmission Mechanism: Exchange Rate Pressure and Sectoral Divergence
The limited rise in USD/TRY fuels selling pressure through the cost channel in sectors with high import dependence, while the positive divergence in banking stocks stands out as a balancing element against this pressure. GARAN's strongest daily gain of +2.61% and YKBNK's +1.00% increase show that the banking group has captured momentum independent of the index's overall decline. This can be explained by the limited direct impact of exchange rate volatility on banking revenues and the fact that the sector's net interest margin sensitivity has been partially reflected in current pricing. In contrast, the selling pressure in industrial and aviation stocks presents a picture consistent with the risk that the exchange rate increase will negatively affect input costs and thus profit margins.
Signal Distribution and Risk Balance
On the technical side, the signal distribution is split in a manner consistent with the index's overall outlook. The oscillators giving a "Strong Buy" signal in GARAN and YKBNK indicates that the rise in these stocks is confirmed by technical support. On the other hand, the RSI falling below 30 in THYAO, PGSUS, and MGROS points to an oversold zone in these stocks; however, oversold conditions alone do not guarantee a recovery. The presence of more than 15 stocks giving a STRONG SELL signal in the report reveals that downside risks in the index persist and that the current selling pressure is broad-based. In this picture, the sustainability of the positive divergence in banking stocks will be shaped depending on whether the index remains permanently below the 15.000 level.
3. Macro Outlook and News Flow
A notable divergence between yesterday and today stands out in the macro data set: In the US, September PPI came in above expectations at 0.4% monthly and 5.4% annually, while the policy rate in the Eurozone was left unchanged at 2.65%. On the Turkish side, the policy rate stands at 37.0% ahead of the TCMB interest rate decision to be announced on October 22; however, the decline in September inflation to 29.73% annually points to a gradual improvement on the real interest rate front. This picture constitutes the fundamental rationale behind the positive divergence in banking stocks: the deposit rate level of 43.12% and the annual 36.3% increase in credit growth suggest that pressure on the net interest margin remains limited. However, this outlook cannot offset the pressure brought to the index by the +0.16% increase in USD/TRY; since the dollar-based loss (-0.56%) is running above the TRY-based loss (-0.41%).
The movement on the exchange rate front creates a two-way effect on industrial and aviation stocks. The rise of USD/TRY to 49.41 may strain gross margins by increasing imported input costs; however, it can also be read as a supportive element for the competitiveness of exporting companies. This contradiction is the main determinant of the sectoral divergence within the index. On the other hand, although the downward trend in the US 10-year Treasury yield and the -0.49% decline in the DXY index partially support risk appetite for emerging market assets, the selling tendency of foreign investors on the equity side domestically limits the reflection of this support to Turkey. This outlook points to a search for balance in investor psychology between "exchange rate pressure and positive real interest rates."
Looking at the stock-based reflections of macro data, it can be said that the strong signals in banking stocks are consistent with fundamental analysis. The fact that the TCMB has not yet begun its interest rate cut cycle and the high level of deposit rates make banks' funding costs predictable. However, on the energy and petrochemical side, despite Brent crude oil moving sideways at 105.91 USD per barrel, a weak outlook prevails in stocks other than TUPRS. This situation shows that although the high level of oil prices supports refinery margins, other energy companies are facing cost pressure. This alignment between technical signals and macro data increases the reliability of "Strong Buy" signals, especially in banking stocks such as GARAN and YKBNK.
The scenario in which this outlook could be invalidated is indexed to the TCMB decision on October 22. If the Central Bank does not cut interest rates despite the decline in inflation or gives a surprise tightening signal, the positive divergence in banking stocks could quickly reverse. Additionally, the rise in core inflation to 2.6% following the US PPI data could postpone global interest rate cut expectations and create renewed pressure on emerging market currencies. In this case, an acceleration in the rise of USD/TRY would increase the index's downside risks and could deepen the selling pressure among the 15+ stocks giving a STRONG SELL signal.
4. Technical Analysis — Highlighted Stocks
Banking stocks are exhibiting the most prominent technical divergence of the day. GARAN, With a daily rise of 2.61%, it shows the strongest performance of the index, while generating a "Strong Buy" signal in oscillators with 17 buy/3 sell. The RSI remaining in the neutral zone at 57.08 indicates that momentum is maintained without creating overbought pressure. However, Stochastic at 87.43 and CCI20 approaching the overbought zone at 102.98 serve as an early warning that the rise may slow down in the short term. The stock is trading at 71% of the channel, quite close to the upper band; if profit-taking occurs at this level, the 5-day moving averages below 133.90 TL should be monitored as support.
YKBNK andEKGYO, Other stocks that stand out in terms of oscillator harmony. YKBNK, with a daily increase of 1.00%, gives a "Strong Buy" signal with 17 buy/2 sell, while RSI is at 52.91 and MACD at 0.08 in the positive zone; although Stochastic reaching 81.14 generates a short-term overbought signal, trading at 43% of the channel shows there is still room in the medium term. In EKGYO, there is a "Buy" signal with 15 buy/5 sell; momentum is balanced with RSI at 52.73 and CCI20 at 50.68. In both stocks, the WT signal being "Buy" confirms that the daily oscillators and the trend direction point in the same direction.
On the side where selling pressure is concentrated, aviation and retail stocks stand out.THYAO, PGSUS andMGROS, With the RSI falling to 37.62, 28.76, and 29.22 respectively, they have approached the oversold zone. Especially in MGROS, CCI20 dropping to -186.16 and Stochastic to 2.99 reveals the severity of the selling pressure; however, these levels may prepare the ground for a technical rebound. Still, the WT signal being "SELL" in all of these stocks indicates that possible rebound buying should not be interpreted as a trend reversal.ASTOR' The daily loss of 3.99% and the 60-day value loss of -39.6% confirm that the weak outlook persists despite trading at 29% of the channel.
More than 15 stocks in the index carrying a "STRONG SELL" signal shows that the technical picture is fragile.AKBNK' Giving a "STRONG SELL" with 2 buy/18 sell and the WT signal also being "SELL" reveals that the positive divergence in the banking sector has not spread to all stocks.TUPRS Despite the short-term SELL signal, it maintains its medium-term trend with a 60-day return of 24.4% and an overall "BUY" rating; however, the ADX rising to 27.76 indicates that the current correction is gaining strength. In this picture, while oscillator harmony in banking stocks offers an advantage for short-term positions, it seems early to create buy recommendations for stocks in the oversold zone unless the trend direction changes.
5. Fundamental Analysis — Company Evaluation
Banking and Holding Companies: In banking stocks that gave the strongest signals of the day, balance sheet structures also support this outlook. Yapı Kredi's current assets of 1.152.41 billion TL indicate one of the highest liquidity levels in the sector, providing a wide safety margin for meeting short-term obligations. Garanti BBVA's current assets of 1.149.31 billion TL paint a similar picture; in both banks, the "Strong Buy" signals in oscillators, when evaluated together with strong balance sheet liquidity, show that momentum is not lacking fundamental support. İş Bankası having the highest current assets at 1.279.91 billion TL constitutes the balance sheet counterpart of the daily rise of 0.69% and the "Buy" signal. On the holding side, Koç Holding's current assets of 3.615.15 billion TL are significantly above Sabancı Holding's value of 2.790.07 billion TL; this difference reflects the contribution of the banking-heavy subsidiary structure to liquidity.
Industry, Energy, and Other Sectors: It is difficult to establish a direct correlation between balance sheet sizes and daily performance in industrial stocks. Tüpraş's current assets of 439.48 billion TL support its strong 60-day medium-term trend of 24.4% with balance sheet scale; despite the short-term SELL signal, maintaining the overall "Buy" rating is consistent with the resilience created by the company's operational scale. THYAO's current assets of 512.19 billion TL reveal that the company's liquidity buffer remains strong despite its indicators in the oversold zone (RSI<30); this suggests that the current selling pressure is pricing-driven rather than balance sheet deterioration. On the energy and petrochemical side, the weak outlook outside Tüpraş, when read together with PETKM's relatively low current assets of 41.74 billion TL, shows that differentiation in profitability expectations rather than liquidity insufficiency stands out across the sector. EKGYO's current assets of 387.01 billion TL and its movement at the upper band of the channel indicate that cash flow in the real estate sector is supported by strong signals.
Ratio-Based Evaluation: The data set only includes current asset sizes; there is no direct measurement of profitability, equity, or debt ratios. Therefore, comparisons between companies can only be made based on liquidity size. From this perspective, it is noteworthy that all banking stocks that diverged positively on a daily basis (GARAN, YKBNK, ISCTR) have current assets above 1 trillion TL. In contrast, the current assets of THYAO and PGSUS (91.42 billion TL) in the oversold zone, while high relative to sector averages, remain well below the banking scale. This picture reveals that liquidity size alone does not create pricing power; however, companies with large balance sheet scales may remain relatively more resilient during periods of selling pressure. The presence of more than 15 stocks giving a STRONG SELL signal reminds us that general market risk is also a pressure factor on the fundamental analysis side, independent of balance sheet size.
6. Risk Management and Scenarios
Downside Scenario: The index's close at 14.986.78 occurred just below the 15.000 psychological support level. A permanent loss of this level could accelerate stop-loss triggers, especially in more than 15 stocks carrying a "STRONG SELL" signal in the technical scan (including THYAO, MGROS, SASA, PGSUS). Although the RSI falling below 30 in most of these stocks (MGROS: 29.22; PGSUS: 28.76) points to the oversold zone, the high ADX values (THYAO: 33.25; MGROS: 37.74) show that the current downtrend maintains its strength. Therefore, if the index falls below 14.900, it is possible that selling pressure deepens and the dollar-based loss (current -0.56%) widens further. To protect the portfolio, it is recommended to reduce long positions in aviation, retail, and chemical stocks that are especially giving "STRONG SELL" signals, or to consider protective sell transactions against these positions.
Upside Scenario: The positive divergence in banking stocks continues to be a balancing element for the index. GARAN's daily rise of +2.61% and its "Strong Buy" signal in oscillators, together with YKBNK (+1.00%) and EKGYO (+1.49%), indicate that momentum in this group may continue. Although GARAN trading at the upper band of the channel (71%) increases the risk of profit-taking in the short term, this strong outlook in banking stocks could be a precursor to an upward move if the index settles above the 15.000 resistance. However, for this scenario to materialize, the +0.16% increase in USD/TRY must not accelerate and currency volatility must remain under control. Otherwise, the return on TL assets may lose its appeal for foreign investors due to dollar-based losses.
Portfolio Protection Shield: In the current picture, there is a balance between the index's effort to hold above the 15.000 level and the positive divergence in banking stocks. Therefore, maintaining the cash ratio in the portfolio is critical to limit the impact of a possible downward move. Cash will both create a buying opportunity in a possible selling wave below 14.900 and serve as a buffer against currency volatility. Trying to balance the risks in industrial, aviation, and retail stocks, which predominantly carry "STRONG SELL" signals, with the strong signals in banking stocks could reduce portfolio volatility. However, the success of this strategy depends on the continuity of momentum in banking stocks and the index's ability to close above the 15.000 level.
7. Recommended Model Portfolio
7. Recommended Model Portfolio
Today's data set points to a clear divergence within BIST 30: While banking stocks stand out in both daily returns and oscillator-based signal strength, STRONG SELL signals are concentrated on the industrial, aviation, and retail side. In this picture, the model portfolio gives weight to banking stocks with high signal strength and positive Pearson correlation (r), while excluding stocks that give STRONG SELL signals and whose r value has turned negative (THYAO, MGROS, SASA) from the portfolio. Weights were determined considering the buy-sell balance in oscillator votes, position within the channel, and 60-day momentum; GARAN's 71% channel position and 2.61% daily return justify the highest weight in the portfolio, while short-term BUY signals in YKBNK and EKGYO are supported with medium-level weights. The cash ratio has been kept at 15% for protection against downside risks in the index and the number of STRONG SELL signals above 15.
| Stock | Sector | Weight (%) | Transaction | Base Scenario | Optimistic Scenario | Invalidation Condition | Reason |
|---|---|---|---|---|---|---|---|
| GARAN | Banking | 20 | Increase weight | With a daily rise of 2.61% and a STRONG BUY signal in oscillators (17 buy/3 sell), it continues to trade at the upper band of the channel (71%); momentum is expected to be maintained with RSI at 57.08 and CCI20 at 102.98. | Despite the stochastic K moving into the overbought zone at 87.43, if the MACD remains above 0.15 and trading volume increases, there is potential for pricing beyond the upper band of the channel. | If the daily close falls below 133.9 TL and the buy-sell balance in the oscillators (17/3) deteriorates, the rationale for the position weakens. | It is the core position of the portfolio with the strongest daily return, the highest channel position (71%), and a positive Pearson correlation (r=0.25). |
| YKBNK | Banking | 15 | Increase weight | With a daily increase of 1.00% and a STRONG BUY signal in the oscillators (17 buy/2 sell), the short-term BUY signal (short=BUY) is expected to carry into the medium term; momentum is expected to continue with RSI 52.91 and StochK 81.14. | If the channel position rises from 43% to above 50% and the MACD strengthens above 0.08, the 60-day trend momentum of 9.1% could accelerate. | If the daily close falls below 36.3 TL or the WT signal turns to SELL, the basis for the position disappears. | With the strongest buy-sell balance in the oscillator votes (17/2) and a positive r (0.53), it is the second banking leg complementing GARAN. |
| EKGYO | Real Estate | 10 | Increase weight | With a daily increase of 1.49% and a BUY signal in the oscillators (15 buy/5 sell), the movement is expected to continue at the upper band of the channel (43%); a balanced momentum is expected with RSI 52.73 and CCI20 50.68. | If StochK rises from 74.77 to above 80 and the MACD shows positive expansion above 0.03, the probability of testing the upper band of the channel increases. | If the daily close falls below 19.8 TL or the buy-sell balance in the oscillator votes (15/5) deteriorates, the position weakens. | With a short-term BUY signal, a positive r (0.45), and a 43% channel position, it is the only strong signal source outside of banking. |
| ISCTR | Banking | 10 | Weight Protect | With a daily increase of 0.69% and a BUY signal in the oscillators (12 buy/6 sell), a short-term recovery is expected with WT's BUY support; momentum is expected to be maintained with RSI 52.48 and StochK 70.69. | If the MACD turns positive from -0.04 and the channel position remains above 45%, the weak 60-day trend of 0.8% could strengthen. | If the daily close falls below 13.1 TL or the WT signal turns to SELL, the rationale for the position weakens. | With a BUY signal in the oscillators and a positive r (0.41), it is a position that supports the banking weight but is held at a limited weight due to the long-term SELL signal. |
| VAKBN | Banking | 10 | Weight Protect | Despite a daily decline of -0.47%, with a BUY signal in the oscillators (15 buy/5 sell) and WT's BUY support, the 60-day trend of 12.0% is expected to be maintained; momentum is expected with RSI 52.37 and StochK 79.85. | If the channel position rises from 30% to above 40% and the MACD strengthens above 0.25, the daily loss could be quickly compensated. | If the daily close falls below 34.08 TL or the buy-sell balance in the oscillator votes (15/5) deteriorates, the position weakens. | It is the banking stock with the highest correlation with the strong BUY signal in oscillators and positive r (0.76); the daily loss does not weaken the signal strength. |
| TUPRS | Energy & Petrochemicals | 10 | Weight Protect | With a strong medium-term trend of 24.4% over 60 days and an overall BUY rating (short=SELL, medium=BUY, long=BUY), stabilization at current levels is expected; a consolidation where the trend continues is expected with RSI 47.84 and ADX 27.76. | If the short-term SELL signal weakens (5 buy/15 sell) and MACD turns positive from -0.85, a new upward wave could form above 384.5 TL. | If the daily close falls below 384.5 TL and ADX drops below 27.76, the medium-term trend momentum is lost. | Positive r (0.76) and strong 60-day momentum justify keeping it in the portfolio despite the short-term SELL signal; the weight is limited due to signal weakness. |
| CASH | — | 25 | — | It provides protection if the downward risks in the index (15+ STRONG SELL signals) continue; it creates a reserve for buying opportunities in a scenario of increased volatility. | If the oversold zone deepens in stocks with STRONG SELL signals (THYAO, MGROS, SASA), this reserve can be used for selective purchases. | If oscillator signals in banking stocks deteriorate and selling pressure in the index accelerates, the cash ratio can be increased. | The number of stocks with STRONG SELL signals being above 15 and the index experiencing a daily loss of -0.41% limits the portfolio's risk appetite. |