SCHB vs VTWNX: 20% overlap
Schwab U.S. Broad Market ETF and Vanguard Target Retirement 2020 share 19.9% 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 3 months apart — VTWNX as of 2026-03-31, 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 1.8. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
SCHB and VTWNX hold 2,406 of the same securities. The ten contributing most to the overlap figure:
| Holding | in SCHB | in VTWNX | Δ |
|---|---|---|---|
| NVDA | 7.0% | 1.3% | 5.7% |
| AAPL | 6.3% | 1.2% | 5.1% |
| MSFT | 4.6% | 0.8% | 3.8% |
| AMZN | 3.6% | 0.6% | 3.0% |
| GOOGL | 3.0% | 0.6% | 2.4% |
| AVGO | 2.9% | 0.5% | 2.4% |
| GOOG | 2.4% | 0.5% | 2.0% |
| MU | 1.5% | 0.4% | 1.1% |
| META | 1.9% | 0.3% | 1.5% |
| TSLA | 1.7% | 0.3% | 1.3% |
Where SCHB and VTWNX 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 | SCHB | VTWNX | Δ |
|---|---|---|---|
| Unclassified | 3.5% | 29.8% | −26.3pp |
| Information Technology | 35.8% | 10.0% | +25.8pp |
| Treasuries | 0.0% | 17.1% | −17.1pp |
| Communication Services | 9.6% | 2.3% | +7.3pp |
| MBS Pass-Through | 0.0% | 7.2% | −7.2pp |
| Consumer Discretionary | 9.3% | 2.9% | +6.4pp |
| Health Care | 8.4% | 2.7% | +5.8pp |
| Corporate — industrial & other | 0.0% | 5.5% | −5.5pp |
Δ is SCHB minus VTWNX, 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
0.0% of SCHB by weight, held in no part of VTWNX.
78.2% of VTWNX by weight, held in no part of SCHB.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| SCHB | VTWNX | |
|---|---|---|
| Top 10 holdings | 34.9% | 44.9% |
| Positions held | 2,407 | 7 |
| Cost per $10,000 held, per year | $3 | $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 SCHB and VTWNX overlap?
SCHB and VTWNX overlap 19.9% by portfolio weight — moderate overlap. They share 2,406 holdings. The figure comes from current issuer holdings files (SCHB as of 2026-05-31, VTWNX as of 2026-03-31).
How is the overlap between SCHB and VTWNX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If SCHB holds a stock at 6% and VTWNX 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 SCHB and VTWNX?
That depends on your goals — we state facts, not advice. At 19.9% overlap, each fund still contributes meaningfully distinct exposure.
What does SCHB own that VTWNX doesn't?
SCHB holds 2,407 positions and VTWNX holds 7; 0 of SCHB's positions don't appear in VTWNX at all, and they are 0.0% of SCHB by weight.
You probably hold more than two funds
This page compares SCHB and VTWNX. 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 SCHB vs VTWNX
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, SCHB as of 2026-05-31, VTWNX as of 2026-03-31. Weights are fractions of each fund. Diagnostics, not advice.