Goldman Sachs Bullish on Taiwan Stocks: Target 51,000 Points, Focusing on the Amplification Effect of Leveraged ETFs

Overview

This is Goldman Sachs' weekly strategy report on the Taiwan market, covering the week's market performance, fund flows, fundamental data, and a special topic on the amplification effect of leveraged ETFs on market volatility. The report points out that against a backdrop of geopolitical news volatility, TAIEX fell 2% for the week with large-scale foreign selling of $8.5 billion, but domestic retail investors and funds actively absorbed shares via ETFs and spot, creating diverging internal market structure. Goldman Sachs maintains an overall bullish stance on Taiwan stocks, setting a 12-month TAIEX target of 51,000 points, with an overweight view on technology, semiconductor, and industrial sectors. The special topic deeply analyzes how the surge in leveraged ETF size amplifies market volatility through dealer gamma hedging mechanisms, with a disproportionate impact on heavyweight stocks like TSMC.

Core views

Market Performance & Fund Flows: TAIEX and the MSCI Taiwan Index both fell 2% for the week, underperforming the Asia ex-Japan Index by 2.1 percentage points. Telecom, banks, and property sectors each rose 3% to lead gains, while Energy, Hardware, and TSMC fell between 4% and 2%. The New Taiwan Dollar closed at 31.6, depreciating 0.4% WoW. Fund flows showed a clear pattern of "foreign selling, domestic buying": Foreign investors (QFII) net sold $8.5 billion, mainly concentrated in the technology sector, with TSMC alone accounting for $3.7 billion net sold for the week. Notably, foreign investors simultaneously reduced net short futures positions by $3.2 billion. Domestic funds net bought $2.1 billion, concentrated in financials and technology, driven by strong ETF inflows. Retail investors reduced margin ratios and net long futures positions but actively bought in the spot market. In terms of ETFs, non-dividend ETFs saw $4.9 billion in weekly inflows, while dividend ETFs saw only $0.2 billion. Fundamentals: Listed companies' May revenue grew 45% YoY, higher than April's 38%, and the combined Apr-May figure reached 68% of Q2 consensus estimates, indicating strong revenue momentum. The 2027 consensus EPS estimate was revised up by 0.2%, with the most positive revisions in the technology and financial sectors, while commodities and transportation saw downgrades. April exports grew 52% YoY, above Goldman Sachs' 42% forecast, mainly driven by tech demand from emerging Asian markets. Q1 Earnings Summary: Overall Q1 earnings for Taiwan stocks grew 51% YoY and 20% QoQ, with 48% of companies beating expectations and 37% missing. The median earnings and revenue surprises were +9% and +1%, respectively. The semiconductor sector saw a 70% YoY earnings surge, while tech hardware grew 34%. Valuation: MSCI Taiwan's 12-month forward PE is 21.5x, at a historical high (+2.9 standard deviations); Price-to-Book (PB) is also high, but Goldman Sachs believes this is matched by strong ROE growth. Special Topic: Leverage Amplification Effect. Goldman Sachs notes that Taiwan leveraged ETF assets under management (AUM) have surpassed $9 billion, growing 280% YTD, with leveraged exposure reaching 0.5-0.6% of free-float market capitalization. More importantly, AUM growth since 2026 has shifted to being driven by fund inflows (over 50% of growth), indicating retail investors are actively accumulating leverage rather than just passive growth from market capitalization gains. Goldman Sachs estimates that a single-day 5% market move would trigger approximately $1.1 billion in dealer gamma rebalancing. Although this is only 3% of average monthly trading volume, given TSMC's massive index weight and dedicated single-stock leveraged ETF products, the impact on TSMC could exceed 20% of its average monthly trading volume. Options Market: TAIEX implied volatility has doubled YTD to around 40%, but skew has compressed, indicating simultaneous demand for downside protection and upside speculation. Dealers are short gamma on both sides, increasing two-way pro-cyclical rebalancing pressure. Additionally, Taiwan's overall margin maintenance ratio stands at around 180%, well above the 130% margin call threshold, suggesting limited systemic margin financing risk. TSMC ADR premium rose to 16%. Goldman Sachs' Reversal Index, GSSRTSMR, reads +0.6, suggesting a potential narrowing of the premium.

Analysis framework

Goldman Sachs' analytical framework is multi-dimensional, progressing through market performance, fund flows, fundamentals, valuation, to special topic analysis. First, by decomposing fund flow data across different investor types (foreign, domestic funds, retail, dealers), the report reveals the structural change taking place behind the market—a pattern of "foreign selling, domestic buying" forming, helping assess the sustainability of market drivers. Second, the special topic employs a "gamma hedging" analytical framework from derivatives markets. In simple terms, leveraged ETF issuers need to dynamically adjust positions based on market moves to maintain their leverage ratio—buying when the market rises and selling when it falls. This "chasing trends" mechanism amplifies market volatility, creating a "leverage amplifier" effect. Goldman Sachs quantifies the potential scale of this rebalancing, benchmarks it against the South Korean market, and considers the unique impact of TSMC as an extremely large-cap stock. In valuation, Goldman Sachs tracks historical percentiles of PE, PB, etc., and compares them with ROE changes to avoid conclusions based solely on valuation levels. Finally, the report utilizes proprietary quantitative models such as the TSMC ADR premium reversal index (GSSRTSMR) and the Cross-Strait Risk Index (GSSRCSRI) to provide references for short-term market sentiment and risk assessment.

Methodology notes

• Quant / factor / portfolio theoryBeta/alpha analysis

  Pro-cyclical Effect of Dealer Gamma Hedging

  Gamma hedging refers to the dynamic adjustment of positions by derivatives dealers to maintain delta neutrality. When the market rises, dealers need to buy more underlying assets to hedge the risk exposure from selling call options; when it falls, they need to sell. This mechanical 'chasing trends' operation amplifies market volatility. In this report, Goldman Sachs applies this framework to quantitatively estimate the potential impact of dealer rebalancing on Taiwan stocks and TSMC during large market swings, given the surge in leveraged ETF size.

• Industry/Industrial Analysis FrameworkVolume and Price Decomposition

  Decomposition of ETF Fund Flows into 'Return-Driven' vs 'Inflow-Driven'

  Decomposes ETF AUM growth into contributions from 'investment returns' and 'new net inflows' to assess the quality of growth. If primarily driven by inflows, it suggests investors are actively adding positions and are continuously bullish; if primarily driven by returns, it may indicate passive expansion with implied drawdown risk. Goldman Sachs found that the growth of Taiwan leveraged ETFs since 2026 has shifted to being inflow-driven (over 50% of growth), indicating retail investors are actively accumulating leverage.

• Company Fundamentals & Financial FrameworkEarnings Quality Analysis

  Monthly Revenue Tracking and Q2 Performance Preview

  By tracking the monthly revenue data of listed companies and calculating the proportion of realized revenue relative to quarterly consensus estimates, the framework anticipates the progress of quarterly earnings. Goldman Sachs reports that May revenue grew 45% YoY, and the combined Apr-May period reached 68% of Q2 consensus estimates, suggesting Q2 results could beat expectations. This is a common high-frequency tracking method used when analyzing the Taiwan market, as Taiwan companies disclose monthly revenue data.

• Valuation methodsPE/PEG valuation

  12-Month Forward PE and Historical Standard Deviation Valuation Framework

  By comparing the current PE multiple to its historical mean and standard deviation, the framework assesses whether valuations are at extreme levels. Goldman Sachs notes that MSCI Taiwan's 12-month forward PE is 21.5x, at a high +2.9 standard deviations, but combined with the ROE trend, the high valuation has some fundamental support. This valuation method helps investors make a more nuanced judgment between 'expensive' and 'reasonable'.

• Cycle and Sentiment FrameworkSentiment Turning Point Analysis

  Implied Volatility and Skew Analysis

  Implied volatility reflects market expectations of future volatility, while skew reflects the pricing difference for upside and downside risks. Goldman Sachs observed that TAIEX implied volatility has doubled YTD to about 40%, but skew has compressed, meaning there is simultaneous demand for downside protection (buying puts) and upside speculation (buying calls). This combination of signals typically appears in phases of complex market sentiment and significant divergence between bulls and bears.

• Financial Industry Specific Terminology

  Margin Maintenance Ratio Analysis

  The margin maintenance ratio is the ratio of the collateral market value in a margin account to the loan amount, a core indicator for measuring retail investor leverage risk. When the ratio falls below the broker's margin call threshold (typically 130%), it triggers forced liquidation. Goldman Sachs notes that Taiwan's overall margin maintenance ratio is around 180%, well above the 130% threshold, suggesting systemic margin financing risk is limited.

• Event Arbitrage and Behavioral FinanceExpectation Gap/Expectation Management

  Earnings Surprise and Consensus Estimate Revision Analysis

  By comparing actual earnings with market consensus expectations (beat/miss) and tracking the direction of consensus estimate revisions, the framework assesses whether market expectations for future earnings are improving or deteriorating. Goldman Sachs' report shows that 48% of companies beat expectations in Q1, the 2027 EPS consensus estimate was revised up 0.2%, with the most positive revisions in technology and financial sectors, indicating earnings expectations are still in an improving channel.

Key data

• TAIEX Weekly Return-2%Underperformed the Asia ex-Japan Index by 2.1 percentage points
• Foreign Investor (QFII) Weekly Net Selling$8.5 billionMainly concentrated in technology; TSMC net sold $3.7 billion
• Domestic Fund Weekly Net Buying$2.1 billionConcentrated in financials and technology, driven by ETF inflows
• Leveraged ETF Assets Under ManagementOver $9 billionUp 280% YTD; leveraged exposure reaches 0.5-0.6% of free-float market cap
• May Revenue YoY Growth45%April was 38%; Apr-May combined reached 68% of Q2 consensus estimates
• Q1 Earnings YoY Growth51%Up 20% QoQ; 48% of companies beat expectations
• MSCI Taiwan 12-Month Forward PE21.5xAt a high of +2.9 standard deviations
• TAIEX 12-Month Target51,000 pointsCurrent level ~44,169 points, implying ~15% upside
• TSMC ADR Premium16%Up 4 percentage points from prior week; GSSRTSMR reversal index at +0.6 suggests potential narrowing
• Margin Maintenance RatioApproximately 180%Well above the 130% margin call threshold; systemic margin financing risk is limited

Impact & implications

Goldman Sachs believes Taiwan stock fundamentals remain strong with ample revenue and earnings momentum, maintaining an overweight stance. However, the report also highlights several noteworthy structural changes: First, a pattern of 'foreign selling, domestic buying' is forming, with domestic retail investors and funds absorbing foreign selling pressure through ETFs. While this provides a buffer for the market to some extent, it also means foreign capital flows remain a key variable affecting Taiwan stocks. Second, the explosive growth of leveraged ETFs is altering the market's microstructure. Goldman Sachs warns that if market volatility increases significantly, dealer gamma hedging operations could amplify the magnitude of swings, particularly with a significant impact on large-cap stocks like TSMC. This means the market could rise faster on the way up and fall harder on the way down. Third, the TSMC ADR premium has risen to 16%, and Goldman Sachs' proprietary reversal index suggests a tendency for the premium to narrow, potentially putting some pressure on short-term stock prices. Regarding valuation, although PE and PB are at historical highs, Goldman Sachs believes strong ROE growth provides reasonable support and does not issue an overvaluation warning. Overall, Goldman Sachs' medium-term view is positive, but it advises investors to pay attention to volatility risks stemming from the leverage effect.

Risks

• Geopolitical news volatility may continue to impact market sentiment, leading to intensified foreign capital outflows
• The surge in leveraged ETF size may amplify market volatility, especially during significant market pullbacks when dealer gamma hedging could exacerbate declines
• The TSMC ADR premium is at a high level; if the premium narrows, it could put short-term pressure on the stock price
• Continued net foreign selling in technology stocks could offset domestic buying support if the trend persists

What to watch

• The upcoming resolution of the Taiwan Central Bank (CBC) meeting
• Whether the net selling trend of foreign investors in the spot and futures markets continues
• Fund flows and size changes in leveraged ETFs, and their impact on market volatility
• Subsequent trend of the TSMC ADR premium (the GSSRTSMR reversal index has already signaled potential narrowing risk)
• Q2 earnings season's revenue and earnings delivery progress (Apr-May combined has reached 68% of consensus estimates)