Asian Stock Index Strength Map 2026: Korea Shines Highest, Indonesia at the Bottom

Source; Pexels (stock index monitor)

Medan, May 2026 — The dynamics of Asian stock markets throughout 2026 present a contrasting picture. On one end, South Korea recorded unprecedented gains since the dot-com era. On the other end, Indonesia struggled under heavy domestic pressure. Here’s a complete performance map of the region’s major indices.

Strongest Index (YTD) KOSPI +100%

Weakest Index (YTD) JCI -28%

Data Per May 2026 YTD

Source; Investing (Asian index strength)

Source; Investing (Index Kospi)

South Korea’s Kospi Index reached 8,476.15 points on May 29, 2026, a significant surge that drove the index’s year-to-date gain to 100%++, an achievement unmatched by any index worldwide.

The main driving force behind this index’s prolonged rally is the semiconductor sector, which in recent years has played a crucial role in technological advancements, particularly memory chips for artificial intelligence. Two Korean giants are Samsung Electronics and SK Hynix. Both have the largest market capitalization and market weighting in the Korean index. Imagine how these two stocks contribute significantly to the Kospi index. As the global index entered the AI ​​era, the demand for chips skyrocketed because AI, like GPT chat, requires massive servers. It’s important to note that AI servers use NVIDIA GPUs, and Nvidia GPUs require superfast memory called HBM (High Bandwidth Memory). This is where Korea has benefited greatly, attracting foreign investors to invest heavily in Korean stocks. Goldman Sachs calls the KOSPI the “highest-conviction equity market” in the region and projects 300% profit growth through 2026 — the strongest annual profit expansion in any Asian market since the recovery from the 1999 Asian financial crisis. From the brightest index, we now turn to the worst-hit index. From a country fought over by global investors, we move to the countries they’ve abandoned one by one. From HBM and the chip supercycle, we come down to earth — to the Jakarta stock exchange floor, where the Indonesia Composite Index now holds a title no one wants to hold: the worst-performing index in the entire Asian region throughout 2026.

It’s not because Indonesia is poor in assets. It’s not because its economy is collapsing. But because markets, like water, always flow to the easiest, most transparent, and most trustworthy place. And currently, Indonesia hasn’t fully achieved that.

Dissecting the JCI’s fall and all the challenges it faces in 2026

Source; Investing ( IHSG Index)

The JCI plummeted from its high of 9,174 in January 2026. This index evaporated more than 5,000 trillion rupiah in market capitalization in just five months. This is not just a normal correction but an abnormal accumulation of long-buried market volatility that exploded simultaneously. If we examine Asian indices, no other decline has been as deep as the JCI.

First Half: MSCI Sends Warning Letter (January 28, 2026) Free Float and Poor Governance

The beginning of the JCI’s downfall occurred on January 28, 2026, when the JCI opened and immediately dropped to close -7.35% or 65.67 points to 8320.56. This sharp decline was caused by MSCI’s rebalancing and stock transparency. At that time, MSCI announced its decision to temporarily freeze all Indonesian stock indices listed on the MSCI platform due to irregularities regarding free float and the Indonesian market’s accessibility, which was deemed not to meet global standards. The MSCI warning had a significant negative impact on the Indonesian stock market, which was experiencing high share holding concentration (HSC), where actual public ownership (free float) was very small due to the majority of shares being held by a handful of parties. This prompted the Financial Services Authority (OJK), the Indonesia Stock Exchange (IDX), and the Indonesian Central Securities Depository (KSEI) to introduce a new minimum free float regulation of 15%, up from 7.5%.

Second Half:

MSCI Removes 18 Indonesian Stocks (May 2026) Pressure on the JCI deepened when MSCI removed 18 Indonesian stocks from its index, potentially triggering a more massive outflow of foreign capital.

Round Three:

FTSE Russell Also Removes Indonesian Stocks Shortly after MSCI, another global index provider also issued a strong signal. In an announcement titled “Index Treatment for the June 2026 Index Review,” released on May 13, 2026, FTSE issued a strong signal regarding the potential removal of stocks with high ownership concentration (HSC) from the Indonesia Stock Exchange. FTSE’s latest regulations were issued following efforts by the Indonesian capital market authorities to increase transparency.

Round Four:

Source; Investing (USD/IDR)

Massive foreign capital outflows weaken the Rupiah further The massive outflow of foreign funds has caused the Rupiah to weaken further against the US dollar year-to-date, reaching Rp 17,800. Foreign investors have sold heavily in big-cap stocks that support the JCI, such as BBCA, BBRI, BBNI, BMRI, and ASII, increasing Indonesia’s fiscal risk premium, prompting investors to shift funds to safe-haven assets such as the US dollar, US government bonds, and gold.

Round Five; Geopolitics: The Iran War and the Global Oil Price Surge

Source ; Investing Crude oil ( WTI)

Heating geopolitical tensions in the Middle East between Israel, the US, and Iran are disrupting the stability of global markets, particularly crude oil. Indonesia, as a net oil importer, is severely disadvantaged because rising domestic energy prices are also triggering increases in staple food prices and potentially eroding the state budget, further deteriorating investor sentiment.

Round Six; Bank Indonesia Surprises Markets with Interest Rate Hike

Source ; Idtrading economics (BI Rate)

Bank Indonesia surprised the market by raising its benchmark interest rate by 50 basis points to 5.25% on May 20, 2026. This monetary tightening policy could trigger negative signals for economic growth. This interest rate hike triggered foreign capital outflows, further weakening the IDR and triggering selling pressure, deepening the JCI decline.

Is 5,966.86 the lowest point for the JCI? Currently, there are no strong catalysts for an improvement in Indonesian stocks. Foreign investors are still tending to be defensive, so shifting their focus to countries with more liquid and stable markets will severely limit the JCI’s movement. Currently, foreign investors are still net selling in the Indonesian stock market. Does Indonesia truly lack sufficient attractiveness to attract foreign investment? Let’s examine the various potentials and opportunities that could attract global investors in the future. Indonesia boasts abundant natural resources, including energy and strategic commodities. Currently, Indonesia is beginning to build an economic foundation by downstreaming natural commodities. While Indonesia previously exported raw materials abroad, it is now developing smelters, refineries, mineral processing industries, industrial estates, and battery raw material factories. This is why the mining, energy, logistics, smelting, and industrial estate sectors are starting to attract global investors. If this downstreaming proceeds as planned, Indonesia will become the largest natural resource manufacturing center in Southeast Asia in the next 10–20 years. The world is currently moving towards environmentally friendly electric vehicles. Developed countries are racing to create environmentally friendly vehicles. Nickel is an export commodity that will be a global necessity in the future. Electric cars require batteries, and batteries require nickel. Indonesia has the largest nickel reserves in the world. Why is nickel so sought after?

Souce; Badan Pusat Statistik

With reserves reaching 62 million tons, equivalent to 44.5% of the world’s nickel reserves, Indonesia is more than just a major player — it is the main stage. This wealth is concentrated in Eastern Indonesia: Southeast Sulawesi, Central Sulawesi, South Sulawesi, Maluku, North Maluku, Papua, and West Papua. These regions hold vast quantities of laterite nickel ore that have yet to be fully explored. Nickel is no longer just a raw material for stainless steel. It is the backbone of lithium-ion batteries that power electric vehicles, store solar and wind energy, and determine the pace of the world’s transition from fossil fuels. The International Energy Agency (IEA) projects that nickel demand will increase nearly 30-fold by 2040. This means that the countries currently at the top of the world’s nickel reserves are not just mineral-rich — they hold the ticket to the future. It’s not just nickel that electric vehicles need, but also copper in large quantities. The world of AI and electric vehicles requires cables. As more electricity comes in, the need for cables to power the energy grid and infrastructure will increase. Indonesia has large mines like Freeport Indonesia. Demand for copper will increase due to the need for data centers, power grids, solar panels, smart grids, and AI infrastructure development. However, Indonesia’s strengths extend beyond nickel and copper. Long before the world was talking about electric vehicles and artificial intelligence, Indonesia already had a strong grip on one of the world’s strategic commodities: palm oil, or Crude Palm Oil (CPO). Indonesia is currently the world’s largest producer and exporter of CPO. Every year, millions of tons of Indonesian palm oil flow to various countries to meet the needs of food, cosmetics, pharmaceuticals, and even renewable energy. In many ways, Indonesia’s position in the palm oil industry today is similar to that of Middle Eastern countries in the petroleum industry: a major supplier of a global demand that is difficult to replace. Interestingly, CPO’s role is no longer limited to its role as a food raw material. As the world faces the challenges of energy security and the transition to more sustainable energy, palm oil has become a key ingredient in biodiesel development. This means that demand for palm oil is supported not only by global population growth but also by future energy needs.

Source; Badan Pusat Statistik

Source; Badan Pusat Statistik

Indonesia is not only the world’s largest palm oil producer but also a major player in the global food and energy supply chain. Contributing more than 50% of the global palm oil trade, Indonesia holds a strategic position that is difficult for other countries to replace. Amid the growing demand for vegetable oil, biodiesel, and alternative energy, the Indonesian CPO industry has the potential to remain a major foreign exchange earner and long-term investment attractor. The latest data from the Central Statistics Agency (BPS) shows that exports of CPO and its derivatives remain Indonesia’s leading commodity, with a value reaching US$8.90 billion in just the first five months of 2025. And this is Indonesia’s latest position as the largest coal exporter. Although the world is transitioning to clean energy, Indonesia still reigns supreme.

The Unremoved Crown Amid the clamor of climate conferences and net-zero promises that grace the front pages of international media, one fact often goes unnoticed: Indonesian coal-laden barges never stop sailing. By 2025, Indonesia will ship 514 million tons of coal across Asia — a figure that isn’t just a statistic, but a reflection of a reality far harsher than the current green narrative. The world may dream of solar panels and wind turbines. But when the sun sets in Manila, when a textile factory in Bangladesh starts pulsing at six in the morning, when a steel furnace in Guangzhou requires thousands of degrees of heat to power it all, it’s still, and will always be, coal. And more than half of that coal comes from Kalimantan. Not because they lack options, but because they’re not ready. It would be a mistake to assume that Indonesia’s coal-importing countries don’t know about renewable energy. They do. They’ve even signed similar commitments in international forums. But building new energy capacity takes time, massive investment, and infrastructure that can’t grow overnight. The Philippines, which relies 98% on Indonesian coal, Bangladesh, which absorbs up to 93% — these are not slow or environmentally unconcerned countries. They are growing nations, whose electricity needs are growing faster than their ability to build wind farms or hydroelectric dams. And it was in that gap that Indonesia filled a void that no one else could fill.

Source ; Kementrian ESDM, BPS, Goodstats/Databooks

Indonesia now stands at the crossroads of two major narratives that are pulling at each other. On the one hand, the world demands decarbonization. On the other, the world still needs cheap, reliable, and abundant energy — and Indonesia is the answer today. As long as the promise of clean energy remains unfulfilled by real technology and investment, as long as solar power plants cannot supply a stable baseload, and as long as the price of energy storage batteries remains too expensive for developing countries — Indonesia will continue to dominate. Not because the world chose it. But because the world is not truly ready to be without it.

Conclusion: Indonesia Is Not a Dying Country, It Is Bleeding

The Jakarta Composite Index (JCI) may fall. The Rupiah may be under pressure. Foreign investors may flee. But there is one thing that no foreign investor can sell, MSCI cannot rebalance, and Fitch cannot downgrade — the ground beneath Indonesia’s feet. As the world races to build electric vehicles, Indonesia sits atop 44.5% of the world’s nickel reserves. As AI and data centers demand unprecedented amounts of copper, Freeport is still pulsing in Papua. While billions of people in Asia are still cooking, filling tanks, and powering power plants, coal ships from Kalimantan never really stop sailing. And while the world eats, half its vegetable oil comes from palm trees grown in Sumatra and Kalimantan. Indonesia’s problem isn’t a lack of assets. It’s that it hasn’t managed its assets well enough. Late capital market reforms, questionable fiscal policies, surprising market turnover of key officials, and opaque governance of large issuers — none of these are natural curses. They can be fixed. And therein lies the greatest opportunity for investors who dare to think beyond the daily candlestick chart. The countries that currently lead Asian markets — Korea with its chips, Taiwan with its TSMC — didn’t build that dominance in a single year. They built it on consistent structural reforms, carefully nurtured investor confidence, and industrial policies that haven’t changed with every cabinet reshuffle. Indonesia has all the raw materials. What’s missing is the recipe. The JCI’s low of 5,966 was perhaps the deepest wound of the year. But for investors with a 10- to 20-year horizon, that wound could be the best entry point into a market on its long journey toward transformation. Not because of speculation — but because no other country in Southeast Asia has the combination of nickel, copper, palm oil, coal, and 280 million consumers under one passport. Indonesia isn’t a dying country. It’s bleeding. And that bleeding, for those familiar with market history, is often a sign that the foundation is being rebuilt from the ground up.