IDR50 Stocks Could Fall Lower: What Does It Mean for Investors?

Indonesia’s long-standing IDR50 stock-price floor may be approaching a major change.

The Indonesia Stock Exchange is reviewing a proposal to remove the minimum price for shares traded in the Regular and Cash Markets, potentially allowing securities currently pinned at IDR50 to trade at lower levels.

IDX President Director Jeffrey Hendrik says the goal is to improve liquidity and allow the market to discover prices more efficiently. The exchange has consulted Indonesian broker and asset-management associations as well as international investors before finalising the mechanism.

For shareholders holding stocks at IDR50, the proposal changes one important assumption: IDR50 may no longer act as an artificial trading floor.

That does not mean every IDR50 stock will collapse.

The Problem With a Hard Price Floor

A market price works best when buyers and sellers can negotiate toward an equilibrium.

Suppose a company trades at IDR50 but there are far more sellers than buyers.

Under the existing Regular Market floor, a seller cannot lower the offer to IDR45 or IDR30 to attract fresh demand.

The result can be a stock that is technically quoted at IDR50 but effectively lacks enough buyers at that price.

Removing the floor would allow prices to adjust until demand and supply meet again.

That is the principle behind price discovery, one of the reasons cited by the IDX for the proposed reform.

Investors Could See Previously Hidden Downside

For existing shareholders, the most obvious consequence is that losses could extend below the current IDR50 floor.

A drop from IDR50 to IDR40 represents a 20% decline.

At IDR25, the loss is 50%.

At IDR10, it becomes 80%.

A hypothetical decline from IDR50 to IDR1 would equal 98%.

The crucial distinction is that removing the floor would not necessarily create the economic deterioration.

It may instead allow the traded price to reflect deterioration that buyers were already pricing below IDR50.

Indonesia Already Has IDR1 Stocks Under a Different Mechanism

The idea is not completely new.

Since March 2024, shares on the IDX Special Monitoring Board using the full periodic call-auction mechanism have been allowed to trade down to IDR1.

Under that system, stocks priced between IDR1 and IDR10 use an IDR1 auto-rejection parameter.

What makes the 2026 proposal much more significant is its possible extension to the Regular and Cash Markets.

That would bring below-IDR50 trading into a much broader part of Indonesia’s equity-market infrastructure.

A Low Share Price Is Not the Same as a Cheap Company

One of the largest risks is behavioural.

Retail investors can easily interpret an IDR5 or IDR10 share as “cheap.”

But nominal share price says little about valuation.

A company with 100 billion shares outstanding at IDR10 has a market value of IDR1 trillion.

Another company with only 100 million shares trading at IDR5,000 has a market capitalisation of IDR500 billion.

The IDR10 share looks cheaper on screen, yet the entire company is worth twice as much.

Investors still need to analyse earnings, cash flow, debt, book value, shares outstanding, free float and business prospects.

Mirae Asset analyst Nafan Aji Gusta has also warned that very low-priced shares could experience much greater volatility and speculative activity. At a price of IDR5, a one-rupiah move already equals 20%.

Volatility Changes Dramatically Near IDR1

This mathematical effect becomes more extreme as the share price falls.

IDR50 to IDR51 is a 2% move.

IDR10 to IDR11 is 10%.

IDR5 to IDR6 is 20%.

IDR1 to IDR2 is 100%.

That is why the final tick-size and auto-rejection rules will be critical.

Market reports suggest the proposed framework may use an IDR1 nominal movement for shares priced from IDR1 to IDR10, while higher price brackets would continue to use percentage limits.

Those parameters should still be treated as proposals until the IDX publishes the final rule.

More Liquidity Does Not Automatically Mean Higher Prices

The IDX expects a wider trading range to help revive activity in stocks that are currently trapped at the minimum price.

Broker research has suggested that selected stocks moving from call auction to continuous trading could see transaction frequency and value increase two to three times under an optimistic scenario. Analysts caution, however, that this would likely be concentrated in affected stocks rather than the entire market.

Higher liquidity simply means investors can buy and sell more easily.

It does not guarantee positive returns.

A stock can become highly liquid while its price continues falling.

Why GOTO Became a Useful Example

The issue gained greater attention after GOTO spent an extended period at Indonesia’s IDR50 minimum.

The company said its removal from an MSCI index was driven by technical trading considerations, particularly the stock’s minimum-price position and low liquidity rather than operational performance.

That illustrates why global institutional investors care about liquidity.

A share can be technically listed but still become difficult for a large fund to buy or sell in enough volume to replicate an index.

There is no verified evidence that the new IDX proposal was designed specifically for GOTO, but the case demonstrates the market-structure problem the change could address.

What Happens to IDR50 Shareholders?

Nothing automatically happens to their ownership.

If an investor owns 100,000 shares before the rule change, they still own 100,000 shares afterward.

What changes is the price range in which other investors can trade those shares.

If demand remains strong at IDR50, the market could stay there or move higher.

If demand is much weaker, the stock could find a new equilibrium below IDR50.

That makes fundamentals even more important because the administrative floor would no longer hide weak market demand.

Is September 7 the Official Start Date?

Not yet in the strongest sense.

Jeffrey Hendrik has said the IDX will announce the details after gathering industry feedback and testing brokerage-platform readiness.

Separate broker and media reports say system tests are scheduled for August 22 and August 29, with implementation targeted for September 7, 2026.

Because today is August 22, those dates should still be described carefully.

August 22 is a scheduled system-testing date, while September 7 remains a target implementation date unless and until the IDX issues the final exchange rule.

What Investors Should Examine Now

Existing IDR50 shareholders may want to focus less on the new nominal floor and more on the reason their stocks are trading at IDR50 in the first place.

Questions include whether earnings are improving, debt remains manageable, cash flow is sustainable, management has a credible strategy, public ownership is sufficient and real market demand exists.

The rule will not change a company’s factories, customers, revenue or debt overnight.

It changes the ability of the market to express its valuation.

That is a very different thing.

Bottom Line

The IDX proposal could end the assumption that IDR50 is the lowest possible price for shares in Indonesia’s Regular and Cash Markets.

For market structure, the change could improve liquidity and make pricing more transparent.

For shareholders, it removes a mechanical floor that previously prevented prices from falling further in those markets.

But IDR50 stocks will not automatically become IDR1 stocks.

The final price will still be determined by buyers, sellers, company fundamentals and market sentiment.

The real question for shareholders is therefore not whether the exchange allows a stock to trade below IDR50.

It is whether investors are still willing to value that company at IDR50 once they are no longer forced to stop there.