FSKAX vs SWTSX: 93% overlap
Fidelity Total Market Index and Schwab Total Stock Market Index share 93.4% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
Different holding dates. These holdings were published about 2 months apart — FSKAX as of 2026-02-28, the rest through 2026-04-30. Each fund is compared using its most recent file, so any trading in between shows up as a difference.
You would hold two tickers and get the diversification of 1.1. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
FSKAX and SWTSX hold 2,882 of the same securities. The ten contributing most to the overlap figure:
| Holding | in FSKAX | in SWTSX | Δ |
|---|---|---|---|
| NVDA | 6.5% | 6.9% | 0.5% |
| AAPL | 5.9% | 5.7% | 0.2% |
| MSFT | 4.4% | 4.3% | 0.0% |
| AMZN | 3.1% | 3.7% | 0.6% |
| GOOGL | 2.7% | 3.2% | 0.5% |
| AVGO | 2.3% | 2.8% | 0.6% |
| GOOG | 2.2% | 2.6% | 0.4% |
| META | 2.1% | 1.9% | 0.2% |
| TSLA | 1.7% | 1.5% | 0.2% |
| BRK-B | 1.4% | 1.2% | 0.1% |
Where FSKAX and SWTSX differ
Sector weights as a share of each fund, ordered by the size of the gap rather than the size of the sector — two funds that overlap heavily still usually diverge somewhere.
| Sector | FSKAX | SWTSX | Δ |
|---|---|---|---|
| Information Technology | 29.9% | 32.3% | −2.4pp |
| Health Care | 9.8% | 8.7% | +1.1pp |
| Unclassified | 4.0% | 3.4% | +0.6pp |
| Cash and/or Derivatives | 0.7% | 0.1% | +0.6pp |
| Consumer Staples | 5.1% | 4.6% | +0.5pp |
| Communication Services | 9.7% | 10.1% | −0.4pp |
| Financials | 12.2% | 11.9% | +0.3pp |
| Industrials | 9.6% | 9.4% | +0.2pp |
Δ is FSKAX minus SWTSX, in percentage points. Sector data is not published by every issuer, so “Unclassified” is a real category rather than a gap in the table.
What each fund holds alone
0.7% of FSKAX by weight, held in no part of SWTSX.
0.5% of SWTSX by weight, held in no part of FSKAX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| FSKAX | SWTSX | |
|---|---|---|
| Top 10 holdings | 32.1% | 33.9% |
| Positions held | 3,754 | 2,939 |
| Cost per $10,000 held, per year | $1 | $3 |
Cost is the expense ratio applied to $10,000; it excludes any brokerage commission, bid-ask spread or tax consequence. Figures are facts about the funds, not a suggestion about which to hold.
Frequently asked
How much do FSKAX and SWTSX overlap?
FSKAX and SWTSX overlap 93.4% by portfolio weight — they are effectively the same fund. They share 2,882 holdings. The figure comes from current issuer holdings files (FSKAX as of 2026-02-28, SWTSX as of 2026-04-30).
How is the overlap between FSKAX and SWTSX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If FSKAX holds a stock at 6% and SWTSX holds the same stock at 4%, 4% counts as shared. The result is bounded between 0% and 100%, and it is computed after looking through any fund-of-funds to the underlying holdings.
Is it redundant to hold both FSKAX and SWTSX?
That depends on your goals — we state facts, not advice. At 93.4% overlap, most of what one fund holds, the other holds too. Expense ratios: FSKAX 0.01% versus SWTSX 0.03%.
What does FSKAX own that SWTSX doesn't?
FSKAX holds 3,754 positions and SWTSX holds 2,939; 871 of FSKAX's positions don't appear in SWTSX at all, and they are 0.7% of FSKAX by weight.
You probably hold more than two funds
This page compares FSKAX and SWTSX. Paste your whole portfolio — brokerage, 401(k), IRA — and see the overlap across every fund at once, plus what you actually own underneath them and your own Effective Funds number. Free, no account, nothing stored.
X-ray my portfolio — free →Watch FSKAX vs SWTSX
We re-read both funds’ published holdings every weeknight. Leave an address and we'll tell you when what's inside actually changes.
Not sending yet — email alerts are built but switched off, and you'll be among the first when they turn on. No spam, one-click unsubscribe.
Related comparisons
Sources: issuer holdings files, FSKAX as of 2026-02-28, SWTSX as of 2026-04-30. Weights are fractions of each fund. Diagnostics, not advice.