Press Release: IDX-PEFINDO Prime Bank Index Constituents for the Period July-December 2026

IDX-PEFINDO Prime Bank Index Constituents for the Period July-December 2026

PEFINDO and the Indonesian Stock Exchange (IDX) have conducted a major review, which takes place every six months in December and June. The results of this review will be valid for the next six months. The analysis used PEFINDO rating data and stock trading data for banking-sector companies listed on the IDX. The following companies are constituents of the IDX-PEFINDO Prime Bank Index for the period of July - December 2026:

Exhibit 1. Constituents of IDX-PEFINDO Prime Bank for July to December 2026

          (*) New member of IDX-PEFINDO Prime Bank for July to December 2026.

IDX-PEFINDO Prime Bank: Maintaining Long-Term Performance Beneath Short-Term Pressures

Throughout the first half of 2026, the Indonesian stock market moved in an environment marked by significant pressures, both from external and domestic factors, keeping market volatility at a very high level. Sharp corrections in the major indices were triggered by global concerns over the transparency of the domestic capital market, the repositioning of foreign investor portfolios, and the lingering uncertainty surrounding the direction of global monetary policy. In this context, the performance of banking sector stocks also came under pressure, reflected in the price corrections of major bank shares amid growing concerns over asset quality, weakening foreign investor sentiment, and market volatility weighing on liquidity. Nevertheless, from a medium- to long-term perspective, Indonesia's banking sector remains in a relatively solid position. Sound banking fundamentals, supported by improving credit growth, room for net interest margin recovery as interest rate pressures ease, and growth in fee-based income, serve as the primary buffers for the sector going forward. Thus, despite ongoing short-term pressures, banking stocks are expected to maintain their resilience and relatively stable prospects over the long term. The IDX-PEFINDO Prime Bank, one of Indonesia's key banking sector indices comprising major banks as its constituents, was not immune to these pressures. Nevertheless, the IDX-PEFINDO Prime Bank has managed to maintain relatively more stable performance compared to its peer indices over the long term.

Looking at performance since the base date (January 3, 2017), the IDX-PEFINDO Prime Bank Index continues to outperform other peer indices on the IDX, though it remains slightly below the main benchmark financial sector-themed indices. The return of the IDX-PEFINDO Prime Bank Index as of June 30, 2026, compared to its value on the base date (January 3, 2017), has reached 37.35%. This return outperforms the IHSG, LQ45, IDX30, and Infobank15, which recorded returns of 6.96%, -37.38%, -33.99%, and 23.14%, respectively. From this comparison of return values, it is evident that the IDX-PEFINDO Prime Bank Index remains well-positioned to generate alpha relative to other benchmark indices on the IDX.

About IDX-PEFINDO Prime Bank Index

The IDX-PEFINDO Prime Bank Index (PRIMBANK10) is a stock price index that measures the price performance of 10 banking stocks with an investment grade rating, strong financial performance, and transaction liquidity. This index is a result of the collaboration between PEFINDO and the Indonesia Stock Exchange (IDX), offering a selection of shares with measurable ratings from PEFINDO. It serves as a market driver in the banking sector and is the only banking index that considers ratings from PEFINDO for selected constituents. The criteria for selecting the constituents of the IDX-PEFINDO Prime Bank Index consist of PEFINDO's Investment Grade rating, total assets, liquidity, market capitalization, market valuation, and legal factors. The base day for IDX-PEFINDO Prime Bank calculations is January 3, 2017, with a base number of 100. The index is calculated by the IDX using the Capped Adjusted Free Float Market Capitalization Weighted method, with the weight of each share limited to a maximum of 35%. PEFINDO and BEI consistently review the constituents of the IDX-PEFINDO Prime Bank Index every 6 months, in June and December.