JCI Falls Over 1% as MSCI Rebalancing Triggers Broad Sell-Off
The Jakarta Composite Index (JCI) slumped more than 1% on Thursday (13/8/2026), after MSCI announced the results of its August 2026 Index Review.
Based on monitoring at 10:25 WIB, the JCI was at around 6,306.28, a decline of 1.06%. The index had opened at 6,388.23 and touched a high of 6,390.33 before reversing course to fall as low as 6,281.25. This means the JCI lost nearly 109 points from its daily high, indicating aggressive selling pressure from the start of trading.
MSCI rebalancing was the primary sentiment driver. However, market movements showed the decline was not limited to stocks directly affected by the index changes. Selling pressure spread to various sectors and large-capitalisation stocks.
Two issuers were removed from the MSCI Global Standard Index, and nine were removed from the MSCI Small Cap Index. All changes will be implemented after market close on 31 August 2026, effective 1 September. Therefore, today’s pressure reflects anticipatory positioning by investors rather than final rebalancing transactions.
Several affected stocks were hit hard. ESSA plunged 7.04% to Rp660, with a transaction value of around Rp67.96 billion. RATU weakened 5.40% to Rp4,730, and Transcoal Pacific (TCPI) fell 4.67% to Rp3,470. CPIN also corrected by around 1.90% to Rp3,090. However, CPIN’s situation differs as it was merely downgraded from the Standard to the Small Cap index, meaning selling pressure from funds tracking the Standard index could be partially offset by buying from Small Cap trackers. Meanwhile, GOTO remained stagnant at Rp50, contributing no direct points to the JCI decline. MSCI removed GOTO using a lowest system price of 0.00001 due to liquidity and index replication issues, but this price is only used for MSCI’s internal calculations and does not reflect actual trading on the Indonesia Stock Exchange.
The heaviest pressure, however, came from stocks not included in the MSCI changes. Petrindo Jaya Kreasi (CUAN) fell 4.5%-5.2% with a transaction value of around Rp925 billion. TPIA weakened 4.17% with Rp412 billion in transactions, PTRO dropped 5% with Rp246 billion, and BRPT declined around 4.1% with nearly Rp249 billion in transactions. The combined turnover of these four stocks alone exceeded Rp1.8 trillion, indicating that risk reduction extended well beyond the directly affected constituents. MSCI sentiment appeared to spread to high-beta stocks, conglomerate shares, and issuers perceived as sensitive to liquidity, free float, and ownership concentration issues.
Sectorally, the basic industry group was among the hardest hit, falling around 2.35%. PT Barito Pacific Tbk (BRPT) weakened more than 4%, while PT Aneka Tambang Tbk (ANTM) and PT Bumi Resources Minerals Tbk (BRMS) also moved into negative territory. The energy sector fell around 1.62%, with ADRO down 1.98% and BUMI down 2.16%. The transportation sector declined around 1.39%, consumer non-cyclicals fell 1.07%, property corrected 0.89%, and the technology sector weakened around 0.62%. Pressure also spread to the financial sector, which fell around 0.56%. BBCA weakened 1.18%, PT Bank Rakyat Indonesia (BBRI) fell 1.28%, and PT Bank Mandiri (BMRI) corrected 0.48%. The decline in major banking stocks is crucial in explaining the JCI’s fall, as their index weighting is far larger than that of the small-cap stocks removed from the MSCI indices.
In summary, while the MSCI rebalancing acted as the catalyst, prompting investors to reduce exposure to stocks at risk of passive fund adjustments, the JCI’s more than 1% drop cannot be explained by the changes to 11 constituents alone. The MSCI announcement triggered a broader risk-off move, with selling pressure spreading to large-transaction stocks and heavyweight sectors.