Archive · 12 Nov 2025
TSMC Stock Surge Limits Funds to Profit From AI Boom
Imagine your favorite toy suddenly became super popular, and its price shot way up.
Now, imagine you have a rule that says you can only buy a small amount of any single toy, no matter how good it is.
This is happening to some investment funds with TSMC, a big chip maker that makes parts for AI.
Because TSMC's stock has grown so much, it now takes up a huge part of certain stock market lists.
Funds that have rules limiting how much of one stock they can own find it hard to buy enough TSMC shares.
This means they might not make as much money as the market list itself, which is a problem for the people who invested in those funds.
Some funds try to find other, similar companies, but it's hard to find one as good as TSMC.
So, many funds are stuck holding less of this popular stock than they'd like.
TSMC's stock price has surged 36% this year, driven by high demand for AI-related chips.
This rally has increased TSMC's weighting in major indexes like MSCI Asia and Taiwan's Taiex to very high levels.
Active investment funds face restrictions on single-stock holdings (often 10%), making it difficult to match TSMC's increased index weight.
At least $100 billion in funds are affected by these portfolio concentration limits, risking underperformance.
Fund managers are exploring strategies like using derivatives or investing in TSMC's supply chain partners to navigate these limitations.
- Who
- Active fund managers, passive index-tracking funds, Taiwan Semiconductor Manufacturing Co. (TSMC)
- What
- TSMC's stock surge due to AI demand has created challenges for active funds due to concentration limits, risking underperformance.
- When
- This year (year-to-date)
- Where
- Primarily impacting funds benchmarked to MSCI Asia and emerging markets indexes, and Taiwan's Taiex, with global regulatory implications (e.g., EU rules).
- Why
- Insatiable demand for AI has driven up TSMC's share price and index weighting, conflicting with portfolio concentration restrictions faced by many active funds.
Active Funds Facing Restrictions
Passive Funds and Alternatives
Single-Stock Exposure Limits
Active Funds Facing Restrictions
Active fund managers are restricted by rules (e.g., UCITS, Taiwanese regulations) capping single-stock holdings (often at 10%), making it difficult to match or beat indexes heavily weighted towards TSMC.
Passive Funds and Alternatives
Passive index-tracking funds have more leeway to match benchmark weights. Some active managers use derivatives or invest in related companies in TSMC's value chain to replicate exposure, though these may not fully match TSMC's quality.
Risk of Underperformance
Active Funds Facing Restrictions
Fund managers are at risk of underperforming benchmarks because they are 'underweight' TSMC due to these structural limitations, meaning they hold less of the stock than its index weighting.
Passive Funds and Alternatives
While alternative investments aim to capture similar growth drivers, they might not fully replicate TSMC's strong pricing power, earnings quality, or business resilience, posing their own set of management challenges.
- TSMC Share Price Surge
- 36% increase in Taipei this year
- Affected Funds Value
- At least $100 billion in funds benchmarked to MSCI Asia/emerging markets, plus $5 billion in Taiwan's Taiex vehicles
- TSMC's Weight in Taiex
- Nearly 43%
- TSMC's Weight in MSCI EM/Asia Pacific Ex-Japan
- Almost 12%
- Common Single-Stock Cap
- 10% (e.g., EU's UCITS rules)
- TSMC Market Capitalization
- Asia's only stock worth more than $1 trillion