Five Shares Make Unusual Moves, Indonesia Stock Exchange Issues Warning

Jakarta, CNBC Indonesia — The Indonesia Stock Exchange (IDX) designated five shares as having unusual market activity (UMA), or trading movements outside the norm, from the first trading session on Tuesday (13 October 2026).

Four of the five shares were flagged after recording unusual price increases. Shares in PT Garda Tujuh Buana Tbk. (GTBO) have risen 50% over the past month to Rp234 each. PT Lovina Beach Brewery Tbk. (STRK) shares surged 48.33% in just one week to Rp89 each.

Shares in PT Tifico Fiber Indonesia Tbk. (TFCO) climbed 93.37% to Rp1,605 each. PT Daaz Bara Lestari Tbk. (DAAZ) shares gained 51.50% over the past month to Rp2,530 each.

The remaining share was designated as UMA after a significant price fall. PT Arkora Hydro Tbk. (ARKO) has dropped 50.54% to Rp2,270 each.

“This Unusual Market Activity (UMA) announcement does not necessarily indicate a violation of laws and regulations in the capital-market sector,” the IDX said in its announcement, quoted on Tuesday (13 October 2026).

The exchange said it is monitoring trading patterns in the shares concerned. It advised investors to:

• Pay attention to the listed companies’ responses to requests for clarification from the IDX;

• Monitor the companies’ performance and disclosures;

• Review planned corporate actions that have not yet been approved by the companies’ general meetings of shareholders; and

• Consider the various possibilities that may arise in the future before making investment decisions.