Ever wonder why a fund suddenly disappears from a major stock index? This article explains how equity index inclusion rules operate, why they matter, and what the process looks like for funds that hold crypto‑related assets.
What an equity index is and how inclusion rules work
An equity index is a basket of publicly traded stocks that aims to represent a specific market segment, such as large‑cap U.S. equities or emerging‑market technology firms. The index provider—companies like MSCI, FTSE Russell, or S&P Dow Jones—sets a set of criteria that a security must meet to be included. These criteria typically cover:
- Market capitalization – the total value of a company’s outstanding shares. Larger caps are usually favoured for broad market indexes.
- Liquidity – how easily the stock can be bought or sold without moving its price, measured by average daily trading volume.
- Free‑float – the proportion of shares that are publicly tradable, excluding insider holdings.
- Sector or thematic relevance – whether the company fits the index’s focus, such as “technology” or “green energy”.
- Corporate governance and regulatory compliance – standards that ensure the company follows accepted reporting and governance practices.
When a security meets all the thresholds, the index provider may add it during a scheduled review—often quarterly or semi‑annually. Conversely, if a security falls below the thresholds, it can be removed. The process is transparent: providers publish methodology documents and give advance notice of any changes.
Why inclusion matters for investors
Being part of a major index brings several benefits. First, many passive investment vehicles—exchange‑traded funds (ETFs), index funds, and even some mutual funds—track these indexes. When a stock is added, these funds must buy the security to stay aligned with the index, creating a surge in demand that can lift the stock’s price temporarily. Second, inclusion raises a company’s visibility, attracting analysts and media coverage. Third, many institutional investors use index membership as a screening tool for compliance or risk‑management policies.
Real‑world illustration: MSCI’s rule change in 2026
In March 2026, MSCI announced new rules that could remove the crypto‑focused funds Strategy and Metaplanet from its equity indexes. The proposed criteria tightened requirements around liquidity and free‑float percentages for assets that hold significant crypto exposure. MSCI’s methodology update meant that if a fund’s underlying holdings fell below the new thresholds, the fund would be excluded during the next quarterly review.
What this means for you as a small investor
If you hold an ETF or mutual fund that tracks an MSCI index, a rule change can affect the composition of your portfolio without you taking any action. Should a crypto‑related fund be removed, the index‑tracking vehicle will sell that fund’s shares, potentially causing a small dip in the ETF’s net asset value (NAV). Conversely, if a new crypto‑oriented fund meets the criteria and is added, the index fund will buy it, which could boost the ETF’s exposure to that sector.
For investors seeking passive income from crypto‑related assets, it’s important to understand that index inclusion is not a guarantee of long‑term stability. The underlying criteria can shift, especially as regulators and index providers respond to market developments.
How to evaluate the risk of index changes
- Read the methodology – Most index providers publish a detailed PDF outlining the exact thresholds for market cap, liquidity, and other factors.
- Monitor quarterly review dates – Index changes usually happen on set dates (e.g., the third Friday of March, June, September, and December for MSCI).
- Check the fund’s prospectus – Look for sections that describe how the fund handles additions or deletions of underlying securities.
- Assess exposure concentration – If a single crypto‑related fund makes up a large slice of an index, its removal could have a noticeable impact on the index’s performance.
- Stay aware of regulatory trends – New regulations around crypto assets often prompt index providers to adjust their rules, as seen with MSCI’s 2026 update.
FAQ
Why do index providers change their inclusion rules?
Providers update criteria to reflect evolving market conditions, improve the index’s representativeness, and address regulatory or risk concerns. Changes help ensure that the index remains a reliable benchmark for investors.
Will an index removal always hurt the price of the removed security?
Not necessarily. While passive funds must sell the security, the impact depends on the size of the fund and the overall market depth. Some securities may recover quickly if other investors step in.
Can I avoid the effects of index changes?
Choosing actively managed funds gives you more control, as managers can decide whether to keep or drop a security regardless of index composition. However, active management typically comes with higher fees.
Do crypto‑focused funds face more frequent index changes?
Yes. Because the crypto sector is still maturing, liquidity and regulatory compliance can fluctuate, prompting index providers to review crypto‑related holdings more closely.
This article references reporting from coindesk.com.
