Jakarta, IDN Times — The Jakarta Composite Index (JCI) experienced a sharp decline during the trading week of May 18–22, 2026. Amidst this bearish market trend, several stocks recorded significant volatility, seeing both notable gains and steep corrections.
According to data from the Indonesia Stock Exchange (IDX), the top performing stocks showed modest growth, with PT LCK Global Kedaton Tbk (LCKM) leading the pack with a 29 percent surge. Conversely, the market saw heavy losses, led by PT Chandra Asri Pacific Tbk (TPIA)—a company associated with Indonesia’s wealthiest individual, Prajogo Pangestu—which plummeted by 53 percent.
Below is a breakdown of the top gainers and losers throughout the week.
1. Weekly Top Gainers
Despite the broader market downturn, these stocks managed to secure the top spots for weekly growth:
- PT LCK Global Kedaton Tbk (LCKM) rose 29.36 percent to Rp141 per share.
- PT Asiaplast Industries Tbk (APLI) rose 12.39 percent to Rp254 per share.
- PT Dafam Property Indonesia Tbk (DFAM) rose 12.00 percent to Rp140 per share.
- PT Unggul Indah Cahaya Tbk (UNIC) rose 11.03 percent to Rp14,600 per share.
- PT Citra Tubindo Tbk (CTBN) rose 10.58 percent to Rp5,750 per share.
- PT Tunas Alfin Tbk (TALF) rose 9.09 percent to Rp780 per share.
- PT Gunung Raja Paksi Tbk (GGRP) rose 8.61 percent to Rp328 per share.
- PT Cita Mineral Investindo Tbk (CITA) rose 8.60 percent to Rp3,790 per share.
- PT Mayapada Hospital Tbk (SRAJ) rose 7.69 percent to Rp14,000 per share.
- PT Inter Delta Tbk (INTD) rose 7.50 percent to Rp258 per share.
2. Weekly Top Losers
The list of the week’s biggest laggards was dominated by TPIA. Here are the 10 stocks that experienced the deepest corrections:
- PT Chandra Asri Pacific Tbk (TPIA) fell 53.49 percent to Rp2,000 per share.
- PT BSA Logistics Indonesia Tbk (WBSA) fell 50.20 percent to Rp630 per share.
- PT Dian Swastatika Sentosa Tbk (DSSA) fell 47.34 percent to Rp545 per share.
- PT Petrindo Jaya Kreasi Tbk (CUAN) fell 39.41 percent to Rp515 per share.
- PT Nusantara Sawit Sejahtera Tbk (NSSS) fell 38.30 percent to Rp472 per share.
- PT Bank Aladin Syariah Tbk (BANK) fell 37.45 percent to Rp304 per share.
- PT Magna Investama Mandiri Tbk (MGNA) fell 37.14 percent to Rp88 per share.
- PT Abadi Lestari Indonesia Tbk (RLCO) fell 34.22 percent to Rp2,960 per share.
- PT Bukaka Teknik Utama Tbk (BUKK) fell 33.78 percent to Rp735 per share.
- PT Yanaprima Hastapersada Tbk (YPAS) fell 32.39 percent to Rp595 per share.
3. JCI Suffers Significant Weekly Decline
The JCI took a hit this week, falling by 8.35 percent to close at 6,162.045, down from the previous week’s position of 6,723.32.
This market correction triggered a substantial contraction in the total market capitalization of the IDX. The exchange’s total market cap dropped to Rp10,635 trillion, representing a decline of Rp1,190 trillion or approximately 10.07 percent compared to the previous week’s figure of Rp11,825 trillion.
Summary
The Jakarta Composite Index experienced a significant downturn during the trading week of May 18–22, 2026, falling 8.35 percent to close at 6,162.045. This bearish trend resulted in a major contraction of the Indonesia Stock Exchange’s total market capitalization, which dropped by Rp1,190 trillion to reach Rp10,635 trillion.
Despite the broader market decline, PT LCK Global Kedaton Tbk (LCKM) emerged as the top gainer with a 29 percent surge. Conversely, PT Chandra Asri Pacific Tbk (TPIA), associated with Prajogo Pangestu, led the top losers by plummeting 53.49 percent, followed by other notable stocks facing deep corrections.