FSKAX vs VTTHX: 39% overlap
Fidelity Total Market Index and Vanguard Target Retirement 2035 share 38.7% 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 4 months apart — FSKAX as of 2026-02-28, the rest through 2026-06-30. 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 1.6. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
FSKAX and VTTHX hold 3,223 of the same securities. The ten contributing most to the overlap figure:
| Holding | in FSKAX | in VTTHX | Δ |
|---|---|---|---|
| NVDA | 6.5% | 2.5% | 4.0% |
| AAPL | 5.9% | 2.3% | 3.6% |
| MSFT | 4.4% | 1.5% | 2.9% |
| AMZN | 3.1% | 1.2% | 1.8% |
| GOOGL | 2.7% | 1.1% | 1.6% |
| AVGO | 2.3% | 1.0% | 1.3% |
| GOOG | 2.2% | 0.9% | 1.3% |
| CASH | 0.7% | 1.9% | 1.2% |
| MU | 0.7% | 0.7% | 0.0% |
| META | 2.1% | 0.7% | 1.4% |
Where FSKAX and VTTHX 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 | VTTHX | Δ |
|---|---|---|---|
| Treasuries | 0.0% | 11.2% | −11.2pp |
| Information Technology | 29.9% | 19.5% | +10.3pp |
| Unclassified | 4.0% | 11.2% | −7.3pp |
| Communication Services | 9.7% | 4.5% | +5.2pp |
| MBS Pass-Through | 0.0% | 4.7% | −4.7pp |
| Health Care | 9.8% | 5.2% | +4.6pp |
| Consumer Discretionary | 9.6% | 5.7% | +3.9pp |
| Corporate — industrial & other | 0.0% | 3.6% | −3.6pp |
Δ is FSKAX minus VTTHX, 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
3.9% of FSKAX by weight, held in no part of VTTHX.
59.2% of VTTHX 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 | VTTHX | |
|---|---|---|
| Top 10 holdings | 32.1% | 26.4% |
| Positions held | 3,754 | 6 |
| Cost per $10,000 held, per year | $1 | $8 |
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 VTTHX overlap?
FSKAX and VTTHX overlap 38.7% by portfolio weight — moderate overlap. They share 3,223 holdings. The figure comes from current issuer holdings files (FSKAX as of 2026-02-28, VTTHX as of 2026-03-31).
How is the overlap between FSKAX and VTTHX 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 VTTHX 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 VTTHX?
That depends on your goals — we state facts, not advice. At 38.7% overlap, each fund still contributes meaningfully distinct exposure.
What does FSKAX own that VTTHX doesn't?
FSKAX holds 3,754 positions and VTTHX holds 6; 530 of FSKAX's positions don't appear in VTTHX at all, and they are 3.9% of FSKAX by weight.
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Related comparisons
Sources: issuer holdings files, FSKAX as of 2026-02-28, VTTHX as of 2026-03-31. Weights are fractions of each fund. Diagnostics, not advice.