Stock Index Fund
VALIC Co I · 1 share class
Fund classification
Classified from what the fund holds · as of 2026 Q2
Stock Index Fund is a U.S. equity index fund that tracks the S&P 500 Index. 21% of VSTIX’s stock holdings are in companies whose revenue grew in the top quartile of U.S. companies over the last five fiscal years (covering 97% of the fund’s equity).
- Asset class
- Equity
- Region
- United States
- Management
- Index (passive)
- Fund type
- Open-end fund
Fund profile
As filed in the prospectus · 2025 Q3
The Fund seeks long-term capital growth through investment in common stocks that, as a group, are expected to provide investment results closely corresponding to the performance of the S&P 500 Index (the Index).
The fund is managed by a subadviser to track the S&P 500 Index by purchasing either all index stocks in their same proportions or a representative sample selected through optimization to match the index's industry weightings, market capitalizations, and fundamental characteristics. Because the fund may use sampling rather than holding all index constituents, its performance may diverge from the index. The subadviser may employ derivatives including futures and total return swaps to seek index tracking, and the fund may lend securities to generate additional income.
| Share class | Gross | Net |
|---|---|---|
| VSTIX | 0.31% | 0.23% |
Net is what a holder pays after the adviser's contractual waiver; gross is before it. A waiver can expire.
Portfolio turnover 3.00% · as of 2025 Q3
Allocation
Asset groups · long / short shown separately, never netted · 2026 Q2
| Stocks | 99.86% |
| Cash & short-term | 0.05% |
| Derivatives | 0.01% |
Look-through blends 1 underlying fund; 0.511% of NAV was not looked through and stays direct-classified.
Sector allocation
The same holdings as Allocation above, grouped by market sector instead of asset type · as of 2026 Q2
| Information Technology | 37.8% |
| Financials | 11.0% |
| Communication Services | 10.3% |
| Consumer Discretionary | 9.6% |
| 10 smaller | 31.3% |
Government, Securitized and Cash are non-corporate buckets; International is foreign holdings we don’t sector-classify, and Other is the residual (held funds, unresolved names).
Portfolio growth profile
How much of the fund’s stock holdings are in fast-growing companies · as of 2026 Q2
Share of the fund’s equity (by value) in companies whose trailing five-year revenue — or net-income — growth ranks in the top 25% of U.S. public companies. Foreign and newly-listed holdings are excluded, so the figure covers only part of the book. From SEC filings — not investment advice. How we measure this.
Latest quarter
What changed since the fund's previous filing
Return profile
Total return as filed — price change plus distributions reinvested · trailing figures to Apr 2026
May 2026 has been filed since the trailing figures were struck, so it is not in the table above or the curve — every figure here shares one cut-off, which is what makes them comparable with other funds.
Holdings
By % of NAV · equity positions carry filed share counts · every resolvable issuer links to its company page
| Ticker | Issuer | %NAV | Reported price | Value | Shares |
|---|---|---|---|---|---|
| NVDA | NVIDIA CorpNVDA | 7.85% | $211.14 | $562.05M | 2.7M |
| AAPL | Apple IncAAPL | 7.01% | $312.06 | $501.87M | 1.6M |
| MSFT | Microsoft CorpMSFT | 5.11% | $450.24 | $366.25M | 813.5K |
| AMZN | Amazon.com IncAMZN | 4.04% | $270.64 | $289.62M | 1.1M |
| GOOGL | Alphabet IncGOOGL | 3.39% | $380.34 | $242.57M | 637.8K |
| AVGO | Broadcom IncAVGO | 3.24% | $446.77 | $232.05M | 519.4K |
| GOOG | Alphabet IncGOOG | 2.69% | $376.43 | $192.85M | 512.3K |
| META | Meta Platforms IncMETA | 2.12% | $632.51 | $151.55M | 239.6K |
| TSLA | Tesla IncTSLA | 1.88% | $435.79 | $134.26M | 308.1K |
| MU | Micron Technology IncMU | 1.67% | $971.00 | $119.72M | 123.3K |
Reported price is the fund's own reported value divided by its own reported shares at 2026-05-31 — not a live quote, and not what the fund paid.
Top 10 positions are 39.00% of net assets, top 25 52.20%, across 505 issuers.
See more of this fund's book
More positions with filed share counts, and the quarter-over-quarter change list rather than the largest few — free with an account, no card required.
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