Banking Stocks as a Core Economic Indicator
Indonesia’s banking sector plays a central role in the stock market, contributing a large portion of total market capitalization. Movements in bank stock prices often reflect broader economic conditions, investor confidence, and financial system stability.
KBMI 3 banks—classified as mid-sized institutions by Indonesia’s Financial Services Authority (OJK)—are particularly sensitive to economic shifts. Unlike large banks, they are more exposed to market fluctuations and operational risks. The 2017–2024 period examined in the study includes major global disruptions, such as trade tensions and the COVID-19 pandemic, which significantly affected financial markets and credit risk in Indonesia.
Simple Data, Strong Analysis
The researchers used a quantitative approach based on panel data from nine KBMI 3 banks listed on the Indonesia Stock Exchange. The dataset covers quarterly observations over eight years, combining financial reports, OJK statistics, and stock price data from Yahoo Finance.
Four key financial ratios were examined:
- Return on Equity (ROE)
- Capital Adequacy Ratio (CAR)
- Price to Book Value (PBV)
- Non-Performing Loans (NPL)
A COVID-19 dummy variable was added to capture the impact of the pandemic.
The analysis applied a fixed effects model, a method designed to identify consistent patterns across banks over time while controlling for external differences.
Key Findings: What Really Moves Stock Prices
The study reveals a clear pattern in investor behavior:
- Capital Adequacy Ratio (CAR) has a positive and significant effect on stock prices
- Price to Book Value (PBV) shows the strongest influence among all variables
- Return on Equity (ROE) has no significant effect
- Non-Performing Loans (NPL) also show no significant impact
- COVID-19 has a negative and significant effect on stock prices
Overall, the model explains approximately 74.08% of stock price variation, indicating that these variables capture most of the key drivers in the KBMI 3 banking segment.
Why Investors Focus on Capital and Valuation
The findings suggest that investors prioritize financial stability and market perception over short-term profitability.
- CAR reflects capital strength, signaling a bank’s ability to absorb losses and manage risk
- PBV represents market valuation, indicating how investors perceive a bank’s future prospects
- ROE becomes less influential because profit information is often anticipated before publication
- NPL remains less critical as long as credit risk is controlled
According to Putra Arfiansyah of Universitas Negeri Surabaya, investors in mid-sized banks tend to shift their attention toward resilience and sustainability rather than profit figures, especially during uncertain periods.
The COVID-19 Effect: Market Shock and Recovery
The study confirms that the COVID-19 pandemic had a negative impact on bank stock prices. During the early stages of the crisis, investors reduced exposure to risky assets, leading to a decline in banking stocks.
However, the market gradually stabilized due to:
- Policy interventions by the Indonesia Stock Exchange
- Trading safeguards to limit excessive declines
- Renewed investor interest as stocks became undervalued
This pattern shows how external shocks can temporarily disrupt markets, but recovery is possible with strong regulatory support and investor confidence.
Implications for Investors, Banks, and Policymakers
The research offers practical insights for multiple stakeholders:
For investors:
- Focus on capital strength (CAR) and valuation (PBV)
- Do not rely solely on profitability indicators
- Consider broader economic conditions
For banks:
- Maintain strong capital buffers
- Improve transparency and communication
- Strengthen long-term financial stability
For policymakers:
- Enhance financial system resilience
- Support market transparency
- Ensure effective crisis response mechanisms
The study highlights that stock prices are shaped not only by internal performance but also by how markets interpret financial signals.
Author Insight
In their analysis, Arfiansyah and Fisabilillah emphasize that financial ratios act as signals in reducing information gaps between companies and investors. “Investors respond more strongly to indicators that directly reflect stability and risk management,” the authors note, reinforcing the importance of capital adequacy and valuation in shaping market behavior.
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