VBTLX vs VCIT: 22% overlap
Vanguard Total Bond Market Index Admiral and Vanguard Intermediate-Term Corporate Bond ETF share 22.4% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
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
VBTLX and VCIT hold 806 of the same securities. The ten contributing most to the overlap figure:
| Holding | in VBTLX | in VCIT | Δ |
|---|---|---|---|
| 46647P | 0.6% | 2.7% | 2.2% |
| 06051G | 0.5% | 2.4% | 1.9% |
| 68389X | 0.3% | 1.2% | 0.8% |
| 38141G | 0.3% | 1.6% | 1.3% |
| 023135 | 0.3% | 1.0% | 0.7% |
| 00206R | 0.3% | 0.9% | 0.6% |
| 404280 | 0.3% | 1.6% | 1.3% |
| 95000U | 0.3% | 1.6% | 1.3% |
| 30303M | 0.2% | 1.2% | 0.9% |
| 61747Y | 0.2% | 2.0% | 1.7% |
Where VBTLX and VCIT 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 | VBTLX | VCIT | Δ |
|---|---|---|---|
| Treasuries | 48.2% | 0.0% | +48.2pp |
| Corporate — industrial & other | 14.6% | 52.7% | −38.1pp |
| Financials | 7.9% | 36.8% | −28.9pp |
| MBS Pass-Through | 20.3% | 0.0% | +20.3pp |
| Utilities | 2.6% | 10.0% | −7.4pp |
| Supranational | 1.4% | 0.0% | +1.4pp |
| Sovereign | 1.2% | 0.0% | +1.2pp |
| Cash and/or Derivatives | 1.1% | 0.1% | +1.0pp |
Δ is VBTLX minus VCIT, 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
55.0% of VBTLX by weight, held in no part of VCIT.
0.4% of VCIT by weight, held in no part of VBTLX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| VBTLX | VCIT | |
|---|---|---|
| Top 10 holdings | 71.7% | 16.6% |
| Positions held | 2,047 | 824 |
| Cost per $10,000 held, per year | $4 | $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 VBTLX and VCIT overlap?
VBTLX and VCIT overlap 22.4% by portfolio weight — moderate overlap. They share 806 holdings. The figure comes from current issuer holdings files (VBTLX as of 2026-06-30, VCIT as of 2026-06-30).
How is the overlap between VBTLX and VCIT calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If VBTLX holds a stock at 6% and VCIT 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 VBTLX and VCIT?
That depends on your goals — we state facts, not advice. At 22.4% overlap, each fund still contributes meaningfully distinct exposure.
What does VBTLX own that VCIT doesn't?
VBTLX holds 2,047 positions and VCIT holds 824; 1,241 of VBTLX's positions don't appear in VCIT at all, and they are 55.0% of VBTLX by weight.
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Related comparisons
Sources: issuer holdings files, VBTLX as of 2026-06-30, VCIT as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.