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SEI Index Fd, S&P 500 Index Fund Class I (SPIIX) Fund Overview

Educational signal · not a buy or sell recommendation · How to read this

$115.89 +$0.85 (+0.74%)

Beta 1.00: the stock has moved roughly in step with the S&P 500.

Data from FMP · Methodology

For informational purposes only. Not financial advice. Machine-generated analysis by Stock Expert AI — model gemini-2.0-flash, generated Mar 18, 2026. Editorial oversight is systemic, not page-by-page. Editorially accountable: Sedat ANAK, Founder and Editor-in-Chief. Data sources: Financial Modeling Prep, Yahoo Finance, SEC EDGAR

Quick Answer

SEI Index Fd, S&P 500 Index Fund Class I (SPIIX) trades at $115.89. Sector: Financials.

Price as of · Last analyzed: Mar 18, 2026
SEI Index Fd, S&P 500 Index Fund Class I (SPIIX) aims to replicate the performance of the S&P 500 Index by investing substantially all of its assets in the index's constituent securities. The fund provides investors with broad exposure to the U.S. equity market, mirroring the index's composition and weighting.

Analyst Coverage for SPIIX: SPIIX does not currently have published analyst price targets in our coverage universe. This is common for smaller-cap names with limited Wall Street coverage.

▶ Watch the SPIIX film Every key number, told as a short cinematic story — just press play. ~2 min

SEI Index Fd, S&P 500 Index Fund Class I (SPIIX) Financial Services Profile

HeadquartersBoston, US
IPO Year2002

SEI Index Fd, S&P 500 Index Fund Class I (SPIIX) offers investors a passively managed fund designed to mirror the S&P 500 Index, providing diversified exposure to approximately 500 leading U.S. companies across various sectors, with investment results closely tracking the index's aggregate price and dividend performance.

Data Provenance | Financial Data Quantitative Analysis Analysis: Mar 18, 2026

What Is the Investment Thesis for SPIIX?

AI-written as of Mar 18, 2026 — figures and tone reflect the data available then, not today's score.

With a beta of 1.00, SPIIX's performance is expected to closely track the S&P 500 Index, making it a suitable option for investors aiming to replicate the index's returns. The fund's strategy of investing at least 80% of its assets in S&P 500 constituents ensures a high degree of correlation with the benchmark. A key value driver is the fund's low expense ratio, typical for index funds, which enhances returns compared to actively managed funds. Upcoming catalysts include continued economic growth and corporate earnings, which typically drive the S&P 500 higher. Potential risks include market downturns and economic recessions, which could negatively impact the fund's performance.

Based on FMP financials and quantitative analysis

SPIIX Key Highlights

AI-written as of Mar 18, 2026 — figures and tone reflect the data available then, not today's score.

SPIIX mirrors the S&P 500 Index, providing diversified exposure to approximately 500 leading U.S. companies.

  • The fund invests at least 80% of its assets in securities listed in the S&P 500 Index, ensuring a high degree of correlation with the benchmark.
  • SPIIX has a beta of 1.00, indicating that its price movements are expected to closely track the S&P 500 Index.
  • The fund's investment strategy focuses on replicating the S&P 500's composition and weighting, minimizing tracking error.
  • SPIIX offers a cost-effective way to gain exposure to the U.S. equity market, with a low expense ratio typical for index funds.

Who Are SPIIX's Competitors?

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

Company Price Change Market Cap MoonshotScore
BSMAX iShares Russell Small/Mid-Cap Idx Inv A $21.16 0.00% $1.34B —
FLMFX Meeder Muirfield Retail $11.30 +0.80% $1.31B —
GTSCX Glenmede Small Cap Equity Portfolio $36.20 +0.44% $960M —
MNDAX MFS Series Trust I - MFS New Discovery Fund Class A $31.68 +0.76% $1.27B —
NEAGX Needham Aggressive Growth Fund Retail Class $74.85 +2.21% $2.50B —
BLK BlackRock, Inc. $1066.45 +0.64% $164B 51 5-pillar
BX Blackstone Inc. $111.64 -0.09% $136B 68 5-pillar
APOS Apollo Global Management, Inc. $25.59 0.00% $74.8B 56 5-pillar

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

What Are SPIIX's Key Strengths?

Low expense ratio.

  • Diversified exposure to the U.S. equity market.
  • High correlation with the S&P 500 Index.
  • Passively managed investment strategy.

What Are SPIIX's Weaknesses?

Limited potential for outperformance compared to the S&P 500 Index.

  • Vulnerability to market downturns.
  • Lack of flexibility to adapt to changing market conditions.

What Are the Key Risks for SPIIX?

Market downturns and economic recessions, which could negatively impact the fund's performance.

  • Increased competition from other S&P 500 index funds and ETFs.
  • Changes in regulations affecting index funds.
  • Tracking error, which could cause the fund's performance to deviate from the S&P 500 Index.

What Are SPIIX's Competitive Advantages?

  • Low-cost structure: SPIIX offers a low expense ratio, making it a cost-effective investment option compared to actively managed funds.
  • Index replication: The fund's strategy of mirroring the S&P 500 Index provides a transparent and predictable investment approach.
  • Diversification: SPIIX provides exposure to approximately 500 leading U.S. companies, offering investors a diversified portfolio.

What Does SPIIX Do?

SEI Index Fd, S&P 500 Index Fund Class I (SPIIX) is a passively managed index fund designed to replicate the performance of the S&P 500 Index. The fund invests substantially all (at least 80%) of its assets in the securities that comprise the S&P 500, which includes approximately 500 of the largest publicly traded companies in the United States, spanning a wide array of industries. SPIIX aims to provide investors with investment results that closely correspond to the aggregate price and dividend performance of the S&P 500 Index, before accounting for the fund's fees and expenses. The fund generally gives the same weight to a given stock as the S&P 500 Index does, ensuring a high degree of correlation with the benchmark's returns. By mirroring the S&P 500, SPIIX offers investors a diversified and cost-effective way to gain exposure to the U.S. equity market. The fund's investment strategy focuses on maintaining a portfolio that accurately reflects the composition of the S&P 500, minimizing tracking error and providing investors with a return profile that closely matches the index's performance. SPIIX is managed with the goal of delivering investment results that align with the S&P 500 Index, offering a straightforward and transparent investment option for those seeking broad market exposure.

What Products and Services Does SPIIX Offer?

  • Invests substantially all of its assets in securities listed in the S&P 500 Index.
  • Replicates the aggregate price and dividend performance of the S&P 500 Index.
  • Provides investors with diversified exposure to approximately 500 leading U.S. companies.
  • Offers a passively managed investment strategy.
  • Gives the same weight to a given stock as the S&P 500 Index does.
  • Aims to minimize tracking error and closely match the index's returns.

How Does SPIIX Make Money?

  • Generates revenue through management fees charged as a percentage of assets under management (AUM).
  • Aims to provide investment results that correspond to the performance of the S&P 500 Index.
  • Offers a cost-effective investment option for investors seeking broad market exposure.

What Industry Does SPIIX Operate In?

SPIIX operates within the asset management industry, specifically in the index fund segment. The industry is characterized by increasing demand for passive investment strategies, driven by factors such as lower costs and the difficulty of active managers to consistently outperform benchmarks. The S&P 500 Index, which SPIIX tracks, represents a significant portion of the overall U.S. equity market capitalization. Competitors in this space include other index funds and ETFs that track the S&P 500, as well as actively managed funds that aim to outperform the index. The market size for S&P 500 index funds is substantial, reflecting the broad appeal of this investment strategy.

Who Are SPIIX's Key Customers?

  • Individual investors seeking broad exposure to the U.S. equity market.
  • Institutional investors looking for a passively managed S&P 500 index fund.
  • Retirement savers seeking diversified investment options for their retirement accounts.
Model self-rating on this text: 75% (not a measure of the evidence) Updated: Mar 18, 2026

Research confidence

Low

Thin evidence — scoring coverage unknown. Treat this as a starting point, not a conclusion.

  • ● Scoring coverage unknown
  • ● Price is current
  • ● No filing on record
  • ● No analyst coverage
  • ● This is a fund, not an operating company

SPIIX Financials

Bull Case vs Bear Case

Bull Case

  • Low expense ratio.
  • Diversified exposure to the U.S. equity market.
  • High correlation with the S&P 500 Index.
  • Passively managed investment strategy.

Bear Case

  • Limited potential for outperformance compared to the S&P 500 Index.
  • Vulnerability to market downturns.
  • Lack of flexibility to adapt to changing market conditions.
  • Potential: Market downturns and economic recessions, which could negatively impact the fund's performance.

AI-generated arguments based on insider flow, news sentiment and technicals — not financial advice · March 2026

SPIIX Latest News

No recent news available for SPIIX.

SPIIX Analyst Consensus

Consensus Rating

Aggregated Buy/Hold/Sell recommendations collected by Financial Modeling Prep for SPIIX.

Price Targets

Wall Street price target analysis for SPIIX.

SPIIX MoonshotScore

MoonshotScore is Stock Expert AI's proprietary 0-100 research rating, not a buy or sell recommendation. No MoonshotScore is published for SPIIX; grades run from A+ (80-100) to F (below 30).

SEI Index Fd, S&P 500 Index Fund Class I Financials Stock: Key Questions Answered

What does SEI Index Fd, S&P 500 Index Fund Class I do?

SEI Index Fd, S&P 500 Index Fund Class I (SPIIX) is designed to mirror the performance of the S&P 500 Index, offering investors a passively managed way to gain exposure to the U.S. equity market.

What do analysts say about SPIIX stock?

However, as an S&P 500 index fund, SPIIX's performance is inherently tied to the overall market sentiment and economic conditions. Key valuation metrics would align with those of the S&P 500, such as the price-to-earnings ratio and dividend yield of the index. Growth considerations would focus on the expected earnings growth of the companies within the S&P 500.

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

Official Resources

Price as of Analysis updated

MoonshotScore is not published for this security.

Data Sources & Methodology
Figures come from Financial Modeling Prep (FMP). If FMP has no figure for a ticker, a price or fundamental may come from a Yahoo Finance fallback, or a price from an Alpaca fallback. SEC EDGAR is used only for filing links and company identity details (legal name, address), never for figures. AI analysis by Stock Expert AI proprietary algorithms. Technical indicators via industry-standard calculations. Last updated: .
Data Provenance
Sources: Financial Modeling Prep (FMP) — Primary · Yahoo Finance — Fallback · Alpaca — Tertiary
Last fetched:
Cache TTL: Quote 5min · Profile 7d · Financials 7d · Insider 48h
How we use AI: Numbers are pulled directly from FMP & Yahoo Finance — our AI writes the analysis, it never edits the figures.
Data provided as-is for educational purposes. Not financial advice. Methodology

Data provided for informational purposes only.

Analysis Notes
  • The information provided is based on publicly available sources and is intended for informational purposes only. It does not constitute investment advice.
Data Sources
Financial Modeling Prep (FMP)Stock Expert AI proprietary analysis