A recent piece of news in the financial markets has sparked heated discussion: Robinhood, known for its user-friendly trading platform, has successfully been included in the S&P 500 index, while MicroStrategy, whose core strategy is to hold large amounts of Bitcoin, was unfortunately left out. It's like the annual recruitment for an exclusive club—one company celebrates its entry while the other misses the opportunity. Why did these two well-known companies meet such different fates? Behind this lies a game of tug-of-war between market rules and corporate strategy.

The 'National Team' of the U.S. Stock Market: What is the S&P 500 Index?

Imagine the S&P 500 index as the 'Hall of Fame' or the 'national team' of the U.S. stock market. It's not just a simple list of companies; it's a stock market index of 500 large-cap U.S. companies carefully selected by S&P Dow Jones Indices to represent various sectors of the American economy. Its movements are widely regarded as a 'barometer' for the health of the U.S. stock market and the overall economy.

Being included in this list is a major positive for any company. The key lies in the concept of 'passive investing.' Trillions of dollars globally are invested in index funds and ETFs (Exchange-Traded Funds) that aim to replicate the performance of the S&P 500. Once a company is added to the index, these massive funds must 'automatically' buy its stock. This enormous and sustained buying pressure not only significantly boosts the company's stock price and liquidity but also serves as an authoritative endorsement of its market position and prestige.

Unveiling the 'Ticket to Entry': The S&P 500's Strict Criteria

Getting into this exclusive club is no easy feat; it requires passing a series of rigorous screenings. While the specific criteria are adjusted periodically, the core requirements always revolve around the following points:

• U.S. Company: Must be registered in the United States.

• Market Capitalization: The company's market cap must meet a certain threshold. This threshold is dynamic; for example, it was around $15.8 billion in early 2024, but it is adjusted based on market conditions.

• Stock Liquidity: The stock must be readily tradable, with sufficient trading volume and public float.

• Financial Viability (Key Threshold): This is one of the most critical hard requirements. It typically demands that the company's most recent quarterly financial report (following U.S. Generally Accepted Accounting Principles, or GAAP) be profitable, and the cumulative earnings over the past four consecutive quarters must also be positive.

Robinhood's Comeback: From Losses to Stable Profitability

Under these rules, Robinhood's inclusion seems logical. The company, which rose to fame during the meme stock trading frenzy, has successfully transformed and diversified its business in recent years after an initial period of rapid expansion and losses. According to its financial reports, Robinhood has achieved profitability under GAAP for several consecutive quarters, successfully meeting the S&P 500's most crucial financial viability standard.

At the same time, its market capitalization, liquidity, and status as a U.S. company all meet the requirements. Robinhood's inclusion signifies its evolution from a controversial disruptor into a company with a more mature business model, a more stable financial position, and recognition from the mainstream financial system.

MicroStrategy's Disappointment: Not a Loss to Accounting Rules, but to 'Discretionary Power'

Compared to Robinhood, MicroStrategy's exclusion is more intriguing. In terms of market cap and name recognition, this company holding a massive amount of Bitcoin is undoubtedly a heavyweight. So, what was the roadblock? The answer points to 'financial viability,' but the reasons behind it are particularly unique and complex.

In the past, MicroStrategy did struggle with accounting standards. Old accounting rules required companies to record an 'impairment loss' on their financial statements if the price of their held Bitcoin fell, creating a paper loss. However, even if the price recovered, this gain could not be reflected on the books unless the company sold the Bitcoin. This rule often led to huge 'paper losses' in its financial reports, making it difficult to meet the S&P 500's sustained profitability requirement.

However, the situation changed in 2024. The U.S. Financial Accounting Standards Board (FASB) issued a new accounting standards update (ASU 2023-08), allowing companies to measure their crypto asset holdings at fair value starting in 2025, with changes in value recorded directly in net income. This means that if the price of Bitcoin rises, MicroStrategy will be able to recognize gains on its financial statements, technically meeting the profitability requirement.

So, with the accounting obstacle cleared by the new rule, why was MicroStrategy still left out? The key lies in the 'discretionary power' of the S&P Index Committee.

Beyond the hard metrics of finance and market cap, the committee also conducts a subjective evaluation when making its final decision, considering the company's business model, risk concentration, and its potential impact on the overall stability of the index. Analysts believe the committee may have been cautious about MicroStrategy due to the following concerns:

1. High Risk Concentration: MicroStrategy's value is deeply tied to a single, highly volatile asset—Bitcoin. This contradicts the S&P 500's principle of seeking risk diversification and sector balance among its constituents.

2. Extreme Stock Volatility: Influenced by Bitcoin's price, MicroStrategy's stock is far more volatile than that of a typical company and is even seen by the market as a leveraged play on Bitcoin. Including it could increase the volatility of the entire index.

3. Unique Business Model: The committee might view MicroStrategy as more akin to a 'closed-end fund' or an asset-holding company rather than a traditional software operating business. Such types of companies are generally not eligible for inclusion in the S&P 500.

After Inclusion and Exclusion: The Market's Different Interpretations

For Robinhood, being included in the S&P 500 is a huge victory. It not only brings the expectation of a stock price increase driven by purchases from passive funds but also serves as an endorsement of its brand reputation and business model, helping to attract more attention from institutional investors.

For MicroStrategy, this exclusion is more of a setback in terms of market expectations. However, it doesn't change its core asset strategy centered on Bitcoin. For its investors, the focus remains on the long-term value of Bitcoin and the company's unique operating model, rather than whether it is part of a specific index.

This case vividly illustrates the rigorous logic of how financial markets operate. Both the strategies chosen by companies and the rules set by indices profoundly shape the market landscape. For us, understanding these 'rules of the game' is a crucial step in gaining insight into the complexities of the business world.

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