FSPSX vs SWISX: 92% overlap
Fidelity International Index and Schwab International Index share 92.4% 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 — FSPSX 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
FSPSX and SWISX hold 673 of the same securities. The ten contributing most to the overlap figure:
| Holding | in FSPSX | in SWISX | Δ |
|---|---|---|---|
| NL0010273215 | 2.5% | 2.6% | 0.1% |
| GB0005405286 | 1.4% | 1.5% | 0.0% |
| GB0009895292 | 1.4% | 1.4% | 0.1% |
| CH0012005267 | 1.4% | 1.3% | 0.1% |
| CH0038863350 | 1.2% | 1.2% | 0.0% |
| GB00BP6MXD84 | 1.1% | 1.2% | 0.1% |
| DE0007236101 | 1.0% | 1.0% | 0.1% |
| JP3902900004 | 0.9% | 0.9% | 0.0% |
| AU000000CBA7 | 0.9% | 1.0% | 0.1% |
| AU000000BHP4 | 0.9% | 0.9% | 0.0% |
Where FSPSX and SWISX 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 | FSPSX | SWISX | Δ |
|---|---|---|---|
| Cash and/or Derivatives | 1.8% | 0.6% | +1.2pp |
| Unclassified | 98.0% | 99.1% | −1.0pp |
| Industrials | 0.3% | 0.0% | +0.3pp |
| Communication Services | 0.1% | 0.0% | +0.1pp |
| Financials | 0.1% | 0.0% | +0.1pp |
| Consumer Staples | 0.1% | 0.0% | +0.1pp |
| Treasuries | 0.0% | 0.0% | +0.0pp |
| Cash & Other | 0.0% | 0.0% | −0.0pp |
Δ is FSPSX minus SWISX, 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
2.9% of FSPSX by weight, held in no part of SWISX.
2.4% of SWISX by weight, held in no part of FSPSX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| FSPSX | SWISX | |
|---|---|---|
| Top 10 holdings | 14.3% | 13.3% |
| Positions held | 701 | 694 |
| Cost per $10,000 held, per year | $4 | $6 |
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 FSPSX and SWISX overlap?
FSPSX and SWISX overlap 92.4% by portfolio weight — they are effectively the same fund. They share 673 holdings. The figure comes from current issuer holdings files (FSPSX as of 2026-02-28, SWISX as of 2026-04-30).
How is the overlap between FSPSX and SWISX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If FSPSX holds a stock at 6% and SWISX 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 FSPSX and SWISX?
That depends on your goals — we state facts, not advice. At 92.4% overlap, most of what one fund holds, the other holds too. Expense ratios: FSPSX 0.03% versus SWISX 0.06%.
What does FSPSX own that SWISX doesn't?
FSPSX holds 701 positions and SWISX holds 694; 28 of FSPSX's positions don't appear in SWISX at all, and they are 2.9% of FSPSX by weight.
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Related comparisons
Sources: issuer holdings files, FSPSX as of 2026-02-28, SWISX as of 2026-04-30. Weights are fractions of each fund. Diagnostics, not advice.