Generated October 10, 2026.
Overview
FSKAX and VTI are both broad total U.S. stock market trackers that capture virtually identical underlying exposures—nearly all publicly traded American equities across market caps. Both aim to replicate the broad market with minimal fees, though they track slightly different indexes and distribute income on different schedules.
How they differ
The structural difference comes first. FSKAX settles once per day at the closing net asset value; VTI trades like a stock in real time, allowing intra-day entry and exit. FSKAX tracks the broader Fidelity Total Market Index while VTI targets the Morningstar US Total Market Index—the holdings are nearly identical, but index methodology and rebalancing can produce small tracking differences over time.
On fees, FSKAX's 0.015% expense ratio beats VTI's 0.03% by 0.01%—a gap that compounds into meaningful savings on a large balance over decades. Both carry essentially market-level beta (FSKAX 1.03, VTI 1.0379), so there's no performance drag from either fund's design.
Who each is best for
FSKAX: Fits buy-and-hold investors who prioritize the absolute lowest annual fee drag and can accept trading only once per day at the market close. The semi-annual distribution schedule suits those who prefer less frequent tax-lot decisions.
VTI: Fits investors who value real-time market access, may trade or rebalance frequently, and want the tightest bid-ask spreads that come with extremely high trading volume. The quarterly distribution cadence appeals to those managing reinvestment or monitoring income more often.
Key risks to know
- Index-tracking drift: Although both funds track near-identical market segments, differences in index construction (Fidelity's versus Morningstar's methodology) and rebalancing timing can produce small performance gaps over multi-year periods. Neither fund guarantees perfect overlap with the other.
- Single-factor equity concentration: Both funds concentrate on U.S. equities and include no international, fixed-income, or alternative assets. A sustained domestic equity bear market affects both equally.
Bottom line
If you prize the absolute lowest cost and can manage once-daily trading, FSKAX's 0.015% expense ratio offers a modest but persistent advantage over VTI's 0.03%. Over a 20-year horizon, the expense-ratio gap could save or cost thousands of dollars depending on account size—worth calculating for your specific situation. Past performance of either fund does not predict future market returns.
AI-generated analysis for educational purposes only. Verify important details independently; past performance does not guarantee future results.
