FSKAX vs IWF: 51% overlap
Fidelity Total Market Index and iShares Russell 1000 Growth ETF share 50.6% 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 5 months apart — FSKAX as of 2026-02-28, the rest through 2026-07-23. 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 1.5. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
FSKAX and IWF hold 332 of the same securities. The ten contributing most to the overlap figure:
| Holding | in FSKAX | in IWF | Δ |
|---|---|---|---|
| NVDA | 6.5% | 15.1% | 8.7% |
| AAPL | 5.9% | 7.8% | 2.0% |
| MSFT | 4.4% | 4.4% | 0.0% |
| GOOGL | 2.7% | 5.7% | 3.0% |
| AVGO | 2.3% | 5.7% | 3.4% |
| GOOG | 2.2% | 4.7% | 2.5% |
| META | 2.1% | 3.4% | 1.3% |
| TSLA | 1.7% | 2.9% | 1.2% |
| LLY | 1.3% | 2.9% | 1.7% |
| V | 0.8% | 1.8% | 1.0% |
Where FSKAX and IWF 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 | IWF | Δ |
|---|---|---|---|
| Information Technology | 29.9% | 55.0% | −25.1pp |
| Financials | 12.2% | 4.7% | +7.5pp |
| Communication Services | 9.7% | 15.7% | −6.0pp |
| Health Care | 9.8% | 5.6% | +4.2pp |
| Unclassified | 4.0% | 0.0% | +4.0pp |
| Consumer Staples | 5.1% | 1.3% | +3.8pp |
| Energy | 3.5% | 0.5% | +2.9pp |
| Consumer Discretionary | 9.6% | 7.5% | +2.1pp |
Δ is FSKAX minus IWF, 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
40.7% of FSKAX by weight, held in no part of IWF.
1.9% of IWF 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 | IWF | |
|---|---|---|
| Top 10 holdings | 32.1% | 56.1% |
| Positions held | 3,754 | 370 |
| Cost per $10,000 held, per year | $1 | $19 |
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 IWF overlap?
FSKAX and IWF overlap 50.6% by portfolio weight — substantial duplication if you hold both. They share 332 holdings. The figure comes from current issuer holdings files (FSKAX as of 2026-02-28, IWF as of 2026-07-23).
How is the overlap between FSKAX and IWF 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 IWF 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 IWF?
That depends on your goals — we state facts, not advice. At 50.6% overlap, each fund still contributes meaningfully distinct exposure.
What does FSKAX own that IWF doesn't?
FSKAX holds 3,754 positions and IWF holds 370; 3,421 of FSKAX's positions don't appear in IWF at all, and they are 40.7% of FSKAX by weight.
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Related comparisons
Sources: issuer holdings files, FSKAX as of 2026-02-28, IWF as of 2026-07-23. Weights are fractions of each fund. Diagnostics, not advice.