iShares S&P 500 Index K (WFSPX) Fund Overview

iShares S&P 500 Index K (WFSPX) Financial Services Profile

iShares S&P 500 Index K (WFSPX) is a passively managed index fund seeking to replicate the performance of the S&P 500. As a feeder fund, it invests in a master portfolio, providing investors with broad market exposure and diversification across various sectors within the U.S. economy, with a market cap of $54.28B.

What Is the Investment Thesis for WFSPX?

WFSPX's investment thesis centers on its ability to provide investors with broad exposure to the U.S. equity market through a passively managed fund that tracks the S&P 500 Index. With a market capitalization of $54.28 billion, the fund offers substantial liquidity and diversification. The primary value driver is the fund's low expense ratio and its ability to closely replicate the returns of the S&P 500. A key growth catalyst is the continued interest in passive investing and the increasing allocation of assets to index funds. Potential risks include market volatility and the concentration of investments in a relatively small number of large-cap stocks. As of 2026-03-17, the fund's beta of 1.00 indicates that it is expected to move in line with the market, which could amplify both gains and losses.

Based on FMP financials and quantitative analysis

WFSPX Key Highlights

WFSPX's investment strategy focuses on replicating the S&P 500 index, providing broad market exposure.

• The fund maintains a beta of 1.00, indicating market-level volatility.
• WFSPX operates as a feeder fund, investing all assets into a master portfolio with the same investment objective.
• The fund invests at least 90% of its assets in securities comprising the S&P 500 Index.
• WFSPX has a market cap of $54.28B, reflecting its significant scale and market presence.

Who Are WFSPX's Competitors?

WFSPX is benchmarked below against 8 industry peers on price, market cap, and our AI MoonshotScore.

AI Score by Stock Expert AI · Price data: FMP / Yahoo Finance

What Are WFSPX's Key Strengths?

Low expense ratio

• Broad market exposure
• High liquidity
• Strong brand recognition

What Are WFSPX's Weaknesses?

Limited potential for outperformance

• Vulnerability to market downturns
• No active management to mitigate risks
• Lack of flexibility in investment strategy

What Are the Key Risks for WFSPX?

Market volatility and economic downturns impacting the performance of the S&P 500.

• Increased competition from other index funds leading to lower expense ratios and reduced profitability.
• Changes in tax laws impacting the attractiveness of index funds.
• Concentration of investments in a relatively small number of large-cap stocks.
• Dependence on the performance of the S&P 500 Index.

What Are WFSPX's Competitive Advantages?

• Scale: WFSPX's large asset base provides it with a cost advantage.
• Brand recognition: iShares is a well-known and respected brand in the ETF industry.
• Low expense ratio: WFSPX's low expense ratio makes it a noteworthy option for investors.

What Does WFSPX Do?

iShares S&P 500 Index K (WFSPX) operates as a feeder fund, channeling all its assets into the Master Portfolio of MIP (Master Investment Portfolio). This structure is designed to mirror the investment objective and strategies of the fund, which is to closely track the performance of the S&P 500 Index. WFSPX invests at least 90% of its assets in securities that constitute the S&P 500. The fund's investment strategy involves maintaining a portfolio where the percentage allocation to each stock is approximately the same as its representation in the S&P 500 Index. This passive investment approach aims to provide investors with returns that closely align with the overall performance of the U.S. equity market, as represented by the S&P 500. The fund's success is thus tied to the performance of the broader market, making it a suitable option for investors seeking broad market exposure. WFSPX offers a cost-effective way to gain access to a diversified portfolio of large-cap U.S. stocks, eliminating the need for individual stock selection and portfolio management. The fund's structure and investment strategy are designed to provide transparency and predictability, making it a popular choice for both individual and institutional investors.

What Products and Services Does WFSPX Offer?

• Replicates the performance of the S&P 500 Index.
• Invests at least 90% of its assets in S&P 500 stocks.
• Maintains a portfolio that mirrors the index's composition.
• Offers investors broad exposure to the U.S. equity market.
• Provides a low-cost, diversified investment option.
• Operates as a feeder fund, investing in a master portfolio.

How Does WFSPX Make Money?

• Generates revenue through management fees charged to investors.
• Operates as a passively managed fund, minimizing expenses.
• Attracts investors seeking broad market exposure and diversification.

What Industry Does WFSPX Operate In?

WFSPX operates within the asset management industry, specifically in the realm of index funds. The industry has seen significant growth in recent years, driven by the increasing popularity of passive investing and the desire for low-cost, diversified investment options. The competitive landscape includes other S&P 500 index funds, as well as actively managed funds that aim to outperform the market. WFSPX's success is tied to its ability to efficiently track the S&P 500 and provide investors with competitive returns. The fund's size and scale provide it with a competitive advantage, allowing it to offer low expense ratios and attract a large investor base.

Who Are WFSPX's Key Customers?

• Individual investors seeking to track the S&P 500.
• Institutional investors looking for broad market exposure.
• Financial advisors seeking low-cost investment options for their clients.

WFSPX Financials

WFSPX Latest News

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WFSPX Analyst Consensus

WFSPX MoonshotScore

Common Questions About WFSPX (Financials)

Disclaimer: This content is for informational purposes only and does not constitute investment advice. Always do your own research and consult a financial advisor.

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