In recent years, Leveraged and Inverse Exchange-Traded Funds (Leveraged and Inverse ETFs) have experienced rapid growth and have become important investment vehicles for short-term trading, hedging, and asset allocation. However, whenever global financial markets experience significant volatility, questions inevitably arise as to whether these products may amplify market risk. This issue has therefore become a key focus for regulators and market participants alike. More recently, the sharp price fluctuations of leveraged and inverse products linked to major Korean large-cap stocks, such as Samsung Electronics and SK hynix, have even been cited as a potential contributing factor to the triggering of market-wide circuit breakers, once again drawing attention to the risk transmission mechanism associated with leveraged and inverse ETFs.
This article begins by comparing the structural differences between leveraged and inverse ETFs in Taiwan and Korea. In Taiwan, leveraged and inverse ETFs primarily track equity indices and achieve their investment objectives through derivatives, such as stock index futures, to deliver twice the daily performance (2x leveraged) or the inverse of the daily performance (-1x inverse) of the underlying index. According to statistics published by the Taiwan Stock Exchange (TWSE), as of May 2026, there were eight listed leveraged and inverse ETFs in Taiwan, all of which are linked to TAIEX Futures rather than individual stocks. These products accounted for 3.47% of the total assets under management (AUM) of all listed ETFs and 10.84% of total ETF trading value. Consequently, Taiwan's leveraged and inverse ETFs are predominantly index-based and futures-based products, with their primary risks arising from movements in the overall equity index and the futures market, rather than from individual securities.
By contrast, in addition to index-based leveraged and inverse products, Korea has recently introduced single-stock leveraged and inverse ETFs linked to major large-cap companies such as Samsung Electronics and SK hynix. Given Korea's relatively wide 30% daily price limit for individual stocks, substantial price movements in these large-cap constituents may be further magnified by the trading and rebalancing activities of single-stock leveraged and inverse ETFs, thereby increasing volatility in both the underlying stocks and the broader market.
The academic literature suggests that the principal mechanism through which leveraged and inverse ETFs may affect market volatility is their daily reset feature and the associated rebalancing transactions. For example, managers of leveraged ETFs must continuously adjust portfolio exposure to maintain a constant leverage ratio. When the underlying asset rises, the fund must increase its exposure; when the underlying asset falls, it must reduce exposure. This creates a momentum trading effect. Under normal market conditions, such rebalancing generally has only a limited impact on prices. However, during periods of heightened volatility, deteriorating market liquidity, or investor panic, ETF rebalancing demand may intensify short-term price movements.
In addition, the creation and redemption mechanism, together with arbitrage activities, may serve as another channel for risk transmission. During periods of market stress, leveraged ETFs may trade at a discount to their net asset value (NAV) as investors aggressively sell ETF units. Arbitrageurs may respond by purchasing discounted ETF units while simultaneously short-selling the underlying securities, futures contracts, or constituent stocks to capture the price convergence. When the ETF tracks large-cap stocks, such arbitrage transactions may increase selling pressure on these heavyweight constituents, causing their share prices to decline further. The subsequent price decline may in turn trigger additional stop-loss orders or redemptions, thereby creating a negative feedback loop.
Inverse ETFs may exhibit a similar transmission mechanism. During sharp market declines, investors seeking downside protection may rapidly increase allocations to inverse ETFs, requiring fund managers to establish larger short positions in order to maintain the target inverse exposure. If strong demand causes inverse ETFs to trade at a premium to NAV, arbitrageurs may short the inverse ETF units and simultaneously sell short the underlying assets, thereby intensifying selling pressure in both the cash and futures markets. In other words, under extreme market conditions, hedging demand, arbitrage activities, and falling asset prices may reinforce one another, causing inverse ETFs not only to reflect market sentiment but also, under certain circumstances, to amplify downward market movements.
In conclusion, leveraged and inverse ETFs may indeed contribute to increased market volatility through their rebalancing, arbitrage, and hedging mechanisms, particularly during periods of elevated volatility and constrained market liquidity. Nevertheless, the sources of risk differ materially between Taiwan's leveraged and inverse ETF market and Korea's single-stock leveraged and inverse ETF market. In Taiwan, leveraged and inverse ETFs currently represent only a relatively small proportion of the overall ETF market and are exclusively linked to TAIEX Futures, rather than individual stocks. Consequently, these products are considerably less likely than single-stock leveraged and inverse ETFs to generate direct selling pressure on specific large-cap stocks and thereby amplify volatility in the underlying cash equity market.
Taiwan's market experience also suggests that ETFs do not necessarily function as market risk amplifiers during periods of correction. During previous episodes of global financial turmoil and market downturns, Taiwan's ETF market generally recorded net creations, indicating that ETFs, in many cases, served to absorb investor capital, support market liquidity, and reinforce market confidence. Going forward, when assessing the risks associated with leveraged and inverse ETFs, regulators should distinguish among differences in product structure, underlying assets, market liquidity, and price limit mechanisms. Continued efforts to strengthen information disclosure, investor education, liquidity management, and stress testing will remain essential to striking an appropriate balance between financial innovation and market stability.