JCI Hits 4,900 as Lower Auto-Rejection Limit Set at 7%

The Jakarta Composite Index (JCI) plunged 4.31% to 4,961.87 at the opening of Monday’s (19 October 2026) trading session, down 223 points from the previous close.

Trading volume stood at 1.17 billion shares, worth Rp1.04 trillion, changing hands in 80,236 transactions. A total of 602 shares fell, 88 were unchanged and only 64 rose.

This is the first time the index has returned to the 4,900 level since the Covid-19 pandemic shook financial markets. Monday’s trading level was its lowest since October 2020.

Large-cap blue-chip issuers continued to weigh on the JCI. BBCA, BBRI, BYAN and TLKM were among the session’s laggards.

The JCI plunged 11.6% on Friday (16 October). Including Monday’s decline, the benchmark index of the Indonesia Stock Exchange (IDX) has fallen 43% year to date, making it the worst-performing major index globally.

The sharp drop was triggered by MSCI’s announcement that it was considering moving Indonesia from emerging-market to standalone-market status.

To curb market volatility, maintain orderly trading and give investors time to digest information, the IDX has officially changed the lower auto-rejection (ARB) limit for share-price declines to 7%. The change applies from 19 October to 31 December 2026.