Taiwan Stock Bubble: TAIEX's 12,495 Peak in 1990

Key Takeaways

• The TAIEX rose about twelvefold from roughly 1,000 in 1986 to near 12,495 in February 1990.
• A trade surplus, low rates, and capital controls trapped savings inside the market.
• By 1990 Taiwan had 4.6 million brokerage accounts in a nation of 20 million.
• The index then fell about 80% in eight months, a classic mania reversion.

Background

Taiwan in the mid-1980s was an export powerhouse running enormous trade surpluses. Years of booming exports and high household savings rates meant the island was awash in cash with few places to put it. By the mid-1980s Taiwan's foreign exchange reserves were only slightly smaller than Japan's, despite Japan having about five times the population, according to a writeup by analyst Michael Fritzell on Asian Century Stocks. Reserves grew from roughly $20 billion in 1985 to about $80 billion by 1987, per a guest analysis published by Lewis Enterprises.

For 24 years after trading began in 1962, the TAIEX had never closed above 1,000 points. It finally broke that level in 1986, as reported by Taiwan Today, the official Taiwan Review magazine. What followed was not a gentle bull market but a vertical one.

The New Taiwan dollar (NT dollar) had been pegged near a fixed rate against the US dollar for about a quarter of a century until the mid-1980s. In 1985, under pressure from the United States over the trade gap, Taiwan's central bank finally let the currency appreciate. According to the US Government Accountability Office, the NT dollar rose roughly 40% against the US dollar from mid-1986 through the late 1980s, moving from around 40 NT per dollar toward the high-20s. That appreciation, and the expectation of more, pulled speculative capital toward Taiwan and kept domestic liquidity high.

Crucially, ordinary people could not easily move money abroad. Tight capital controls trapped that vast pool of savings at home. With bank deposits yielding almost nothing in real terms after the inflows pushed interest rates down, households faced a choice between watching their cash earn little and chasing the two assets that were rising fast: stocks and property.

What Happened

The mania built over three years and then unwound in a matter of months. The acute timeline is sharply dated.

• 1986: The TAIEX closes above 1,000 for the first time in its history.
• September 24, 1988: Finance Minister Shirley Kuo announces a securities transaction tax. The index falls for 19 straight sessions, from above 8,700 to the mid-5,000s, a roughly 36% drop, per Taiwan Today.
• June 19, 1989: The TAIEX surpasses 10,000 for the first time, reaching 10,013, second only to Japan's market globally.
• February 10, 1990: The index peaks near 12,495 points, around the Lunar New Year and Lantern Festival, per Formosa Files and The Bubble Bubble.
• March 16, 1990: Daily turnover hits a record of nearly $8 billion, per Taiwan Today.
• June 30, 1990: The index closes at 5,047, down about 60% from the peak in roughly four and a half months, per Taiwan Today.
• August 1990: Iraq invades Kuwait, oil prices spike, and the selling accelerates.
• October 1990: The TAIEX bottoms near 2,500, completing a fall of about 80% from the February high.

The speed cut both ways. The index had risen roughly twelvefold in under four years, then gave back the bulk of those gains in about eight months. The 1988 transaction-tax episode was a preview: a single policy announcement erased a third of the market's value in three weeks before buyers piled back in, showing how unstable the price level already was.

The reversal in 1990 had several triggers stacked together. Japan's own asset bubble began deflating that year, removing a regional bid for risk. Several large underground investment companies collapsed, wiping out savers. Then the Gulf War sent oil higher and confidence lower. None of these alone explains an 80% crash. The market fell that far because it had risen on a foundation of liquidity and belief rather than earnings.

Why It Happened

The Taiwan stock bubble was a liquidity event first and a speculation event second. The two reinforced each other.

The root cause was a wall of money with nowhere to go. The trade surplus and high savings rate generated cash faster than the domestic economy could absorb it. Capital controls kept that cash at home, and the central bank, trying to slow the NT dollar's rise, expanded credit and held rates low. The result was an unusually loose monetary backdrop. Taiwan Today and Asian Century Stocks both describe an economy where liquidity was plentiful, real interest rates were low, and bank deposits paid so little that savers felt they were losing ground by holding cash.

That money found two outlets, stocks and real estate, and both inflated together. Taipei housing prices rose about 5.5 times between 1986 and 1990, per Asian Century Stocks, while nationwide property roughly tripled in two years. Rising property values made paper stock gains feel normal, and the two markets fed a shared sense that prices only went up.

Retail participation then turned a boom into a mania. The number of active brokerage accounts reached 4.6 million by early 1990 in a nation of about 20 million people, per Asian Century Stocks, so a large share of adults were directly trading. Taiwan Today put the number of investment accounts near 4 million and estimated about 3 million active investors, with crowds of up to a million people jamming brokerage floors on peak days. Licensed brokerages multiplied from 27 in June 1988 to 297 by March 1990. The whole-stock inventory of the market changed hands about six times during 1989, and one observer told Taiwan Today that "in the TAIEX, a long-term investment is three hours."

Underground finance amplified the leverage. Informal Financial Investment Companies, sometimes called dak houses, took deposits from the public and promised returns far above bank rates, often several percent per month. By 1989 there were roughly 180 such firms, per Asian Century Stocks, and they channeled household savings into stocks. When they failed, around 1.2 million investors were defrauded, with losses estimated near NT$200 billion.

Valuation became almost irrelevant. By the fall of 1989 the average price-to-earnings ratio on the TAIEX was about 100, per The Bubble Bubble and Asian Century Stocks, roughly double the already-stretched 51 multiple on Japan's market at the time. At the peak, daily trading on the small Taipei exchange, which listed fewer than 200 companies, at times exceeded the combined turnover of Tokyo and New York. A market that small generating that much volume is a signature of pure speculation, not investment.

By the Numbers

• Peak: TAIEX near 12,495 on February 10, 1990, its high for the era. (The Bubble Bubble; Formosa Files)
• Run-up: roughly twelvefold, from about 1,000 in 1986 to the 1990 peak in under four years. (Formosa Files; The Bubble Bubble)
• 10,000 milestone: the index first closed above 10,000 on June 19, 1989, at 10,013. (Taiwan Today; Formosa Files)
• Crash: about 80% over eight months, to near 2,500 by October 1990. (Formosa Files)
• First leg down: down about 60% to 5,047 by June 30, 1990. (Taiwan Today)
• Valuation: average P/E around 100 in late 1989, versus about 51 on Japan's market. (The Bubble Bubble; Asian Century Stocks)
• Retail scale: 4.6 million brokerage accounts by early 1990 in a nation of about 20 million. (Asian Century Stocks)
• Brokerage boom: licensed brokerages rose from 27 to 297 between June 1988 and March 1990. (Asian Century Stocks; Formosa Files)
• Turnover: record daily volume near $8 billion on March 16, 1990, at times topping Tokyo and New York combined. (Taiwan Today)
• Currency: the NT dollar appreciated roughly 40% against the US dollar from mid-1986 through the late 1980s. (U.S. GAO)
• Reserves: foreign exchange reserves grew from about $20 billion in 1985 to roughly $80 billion by 1987. (Lewis Enterprises)
• Underground losses: roughly 180 informal investment companies failed, defrauding about 1.2 million people of near NT$200 billion. (Asian Century Stocks)

Aftermath

The crash erased a vast amount of paper wealth and reached far beyond the trading floor. Taiwan Today reported that the market's total value fell from roughly US$260 billion to about US$107 billion by mid-1990, with around US$154 billion evaporating, a figure larger than Taiwan's annual GNP at the time. A mid-1990 survey of 1,214 Taipei investors found 54% reported overall losses.

The real-economy hangover was visible in everyday life. Mercedes-Benz sales, which had made Taiwan one of the brand's largest markets at the peak with about 3,000 cars in 1988, fell roughly 70% in 1990, per Asian Century Stocks, and tens of thousands of unsold imported cars piled up at port. Mental-health clinic visits rose noticeably as ruined speculators sought help, per Formosa Files. GDP growth slowed from 8.7% the prior year to 5.5% in 1990 before rebounding to 8.4% in 1991.

There were no marquee bank failures or criminal trials of the kind seen in some other crashes, but the underground investment companies were a major scandal, since their collapse wiped out more than a million small savers. The government had already signaled the dangers when its 1988 transaction-tax proposal alone triggered a 19-day plunge, and it eventually implemented a securities transaction tax that became a meaningful source of revenue.

The most striking part of the aftermath was the length of the recovery. The TAIEX did not surpass its 1990 peak until around the summer of 2020, roughly three decades later, per Formosa Files. A buyer who put money in at the top waited a generation just to break even, before the index later pushed past 20,000.

Lessons for Investors

1. Liquidity, not earnings, drives manias. The Taiwan boom was funded by a trade surplus, low rates, and capital controls that trapped savings at home. When a market rises because money has nowhere else to go, the price level reflects the size of that money pool, not the value of the underlying companies. Ask what is actually funding a rally before you trust it.

2. A captive, inexperienced crowd can overshoot violently. With 4.6 million brokerage accounts in a nation of 20 million, the marginal buyer was a first-time speculator chasing momentum. When the dominant participant is a retail crowd treating stocks like lottery tickets, with average holding periods measured in days, prices can detach from reality fast and snap back just as hard.

3. Extreme valuations are a warning in plain sight. An average price-to-earnings ratio near 100, double an already-bubbly Japan, was visible to anyone who looked. You do not need a model to recognize a market priced at several times its normal multiple. When standard yardsticks reach historic extremes, treat them as a signal rather than a sign of a new era.

4. Trading volume out of proportion to size is a red flag. A small exchange with fewer than 200 listed firms was at times out-trading Tokyo and New York combined. Frantic turnover without matching fundamentals shows a market dominated by speculation, where investors are betting on the next buyer rather than on cash flows. Frenzied activity is a symptom of a top, not strength.

5. Recovery can take a generation. It took roughly 30 years for the TAIEX to reclaim its 1990 peak. Buying at the top of a mania is not a temporary setback you simply wait out over a few years. The opportunity cost of being wrong at an extreme can span decades, which is why the entry price you pay matters as much as the asset you choose.

Frequently Asked Questions

What was the Taiwan stock bubble in simple terms? The Taiwan stock bubble was a late-1980s mania in which the TAIEX index rose about twelvefold to a peak near 12,495 in February 1990, then crashed roughly 80% by that October. It was driven by trapped savings and heavy retail speculation rather than company earnings.

Why did the Taiwan stock bubble happen? A large trade surplus, low interest rates, and tight capital controls kept a flood of savings trapped inside the domestic market, with few alternatives to stocks and property. Millions of inexperienced retail investors, plus underground investment companies offering high returns, then pushed prices far past what earnings could support.

How much money was lost when the bubble burst? Taiwan Today reported the market's total value fell from about US$260 billion to roughly US$107 billion by mid-1990, wiping out around US$154 billion, more than Taiwan's annual GNP at the time. A mid-1990 survey found 54% of Taipei investors reported overall losses.

Could a bubble like Taiwan's happen again today? Yes. The ingredients, plentiful liquidity, a captive retail crowd, and valuations detached from earnings, recur regularly, as later booms in China in 2007 and elsewhere showed. Better disclosure and regulation help, but crowd psychology and the use of leverage have not changed.

What is the main lesson from the Taiwan stock bubble? The clearest lesson is that prices driven by liquidity and speculation eventually revert to what fundamentals justify, often faster than they rose. When a market shows a P/E near 100 and turnover larger than far bigger exchanges, treat it as a warning rather than proof of a new era.

Sources

1. Taiwan Today (Taiwan Review). The Decline and Fall of the Taiwan Exchange. https://taiwantoday.tw/AMP/politics/taiwan-review/4619/the-decline-and-fall-of-the-taiwan-exchange
2. U.S. Government Accountability Office. U.S. Trade Deficit: Impact of Currency Appreciations in Taiwan, South Korea, and Hong Kong (NSIAD-89-130). https://www.gao.gov/assets/nsiad-89-130.pdf
3. Fritzell, Michael. Speculation in 1980s Taiwan. Asian Century Stocks. https://www.asiancenturystocks.com/boombusttaiwan/
4. Formosa Files. Taiwan's Stock Market Bubble and the Crash of 1990 (Season 5, Episode 8). https://www.formosafiles.com/s5-e8-taiwans-stock-market-bubble-and-the-crash-of-1990/
5. The Bubble Bubble. The Great Taiwan Bubble of the 1980s. https://www.thebubblebubble.com/taiwan-bubble/
6. Lewis Enterprises. The Great Taiwan Bubble (guest post). https://www.lewisenterprises.blog/p/le-guest-post-the-great-taiwan-bubble

Disclaimer

This article is educational content only and is not financial advice. Nothing here is a recommendation to buy, sell, or hold any security. Consult a licensed advisor before making investment decisions.