Jakarta, IDN Times — The Jakarta Composite Index (JCI) faced a turbulent week during the period of May 18—22, 2026, recording a significant decline. Amidst this bearish sentiment, several stocks experienced notable volatility, posting both impressive gains and steep corrections.
According to data from the Indonesia Stock Exchange (IDX), the top-performing stocks saw gains capped at around 20 percent. PT LCK Global Kedaton Tbk (LCKM) emerged as the leader, surging by 29 percent. Conversely, the market saw deep corrections, most notably in PT Chandra Asri Pacific Tbk (TPIA), a company associated with Indonesia’s wealthiest individual, Prajogo Pangestu, which plummeted by 53 percent.
Below is the detailed list of the top gainers and losers throughout the week’s trading sessions.
1. Top Gaining Stocks
Despite the broader market slump, the following stocks managed to secure the highest gains for the week:
- 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. Top Losing Stocks
Leading the list of the week’s top losers is TPIA. Here are the 10 stocks that experienced the sharpest declines:
- 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 Weekly Market Performance
Over the course of the week, the JCI suffered a significant setback, tumbling by 8.35 percent. The index closed at 6,162.045, down from the previous week’s level of 6,723.32.
This sharp downturn in the JCI also impacted the total market capitalization on the IDX, which contracted compared to the previous week. The total market capitalization reached Rp10,635 trillion, reflecting a loss of Rp1,190 trillion or approximately 10.07 percent from the previous week’s total of Rp11,825 trillion.
Summary
The Jakarta Composite Index (JCI) experienced a turbulent week from May 18 to 22, 2026, recording a significant decline of 8.35 percent to close at 6,162.045. This bearish sentiment led to a contraction in total market capitalization, which fell by Rp1,190 trillion to reach Rp10,635 trillion. The market downturn significantly impacted overall investor value during this trading period.
Amidst the broader market slump, individual stock performance was highly volatile. PT LCK Global Kedaton Tbk (LCKM) emerged as the top performer with a 29 percent gain, while PT Chandra Asri Pacific Tbk (TPIA), associated with Prajogo Pangestu, suffered the sharpest correction with a 53.49 percent decline. Other notable losers included WBSA and DSSA, which also faced steep double-digit drops throughout the week.
