AGG vs PRWCX: 0% overlap
iShares Core U.S. Aggregate Bond ETF and T. Rowe Price Capital Appreciation share 0.1% 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 — PRWCX as of 2026-03-31, 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 2.0. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
AGG and PRWCX hold 10 of the same securities. The ten contributing most to the overlap figure:
| Holding | in AGG | in PRWCX | Δ |
|---|---|---|---|
| 842587 | 0.0% | 0.2% | 0.2% |
| 65473P | 0.0% | 0.3% | 0.3% |
| 29364G | 0.0% | 0.3% | 0.3% |
| 15189T | 0.0% | 0.2% | 0.2% |
| 78410G | 0.0% | 0.3% | 0.3% |
| 46266T | 0.0% | 0.1% | 0.1% |
| 55354G | 0.0% | 0.1% | 0.1% |
| 02557T | 0.0% | 0.3% | 0.3% |
| 09951L | 0.0% | 0.1% | 0.1% |
| 22788C | 0.0% | 0.0% | 0.0% |
Where AGG and PRWCX 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 | AGG | PRWCX | Δ |
|---|---|---|---|
| Treasuries | 46.5% | 18.2% | +28.4pp |
| MBS Pass-Through | 24.1% | 0.0% | +24.1pp |
| Unclassified | 0.0% | 20.3% | −20.3pp |
| Information Technology | 0.0% | 17.8% | −17.8pp |
| Corporate — industrial & other | 14.3% | 0.7% | +13.6pp |
| Health Care | 0.0% | 12.2% | −12.2pp |
| Consumer Discretionary | 0.0% | 7.2% | −7.2pp |
| Cash & Other | -2.1% | 5.0% | −7.2pp |
Δ is AGG minus PRWCX, 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
102.0% of AGG by weight, held in no part of PRWCX.
92.7% of PRWCX by weight, held in no part of AGG.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| AGG | PRWCX | |
|---|---|---|
| Top 10 holdings | 75.3% | 46.0% |
| Positions held | 1,864 | 151 |
| Cost per $10,000 held, per year | $3 | $72 |
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 AGG and PRWCX overlap?
AGG and PRWCX overlap 0.1% by portfolio weight — largely distinct portfolios. They share 10 holdings. The figure comes from current issuer holdings files (AGG as of 2026-07-23, PRWCX as of 2026-03-31).
How is the overlap between AGG and PRWCX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If AGG holds a stock at 6% and PRWCX 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 AGG and PRWCX?
That depends on your goals — we state facts, not advice. At 0.1% overlap, each fund still contributes meaningfully distinct exposure.
What does AGG own that PRWCX doesn't?
AGG holds 1,864 positions and PRWCX holds 151; 1,853 of AGG's positions don't appear in PRWCX at all, and they are 102.0% of AGG by weight.
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Related comparisons
Sources: issuer holdings files, AGG as of 2026-07-23, PRWCX as of 2026-03-31. Weights are fractions of each fund. Diagnostics, not advice.