PRGFX vs VIMAX: 4% overlap
T. Rowe Price Growth Stock and Vanguard Mid-Cap Index Admiral share 4.3% 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 — PRGFX 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 2.0. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
PRGFX and VIMAX hold 12 of the same securities. The ten contributing most to the overlap figure:
| Holding | in PRGFX | in VIMAX | Δ |
|---|---|---|---|
| HWM | 0.9% | 1.0% | 0.1% |
| DASH | 0.5% | 0.7% | 0.2% |
| VRT | 0.4% | 1.2% | 0.8% |
| CVNA | 0.8% | 0.4% | 0.4% |
| CMG | 0.4% | 0.4% | 0.0% |
| HLT | 0.6% | 0.4% | 0.2% |
| TDY | 0.5% | 0.3% | 0.2% |
| CTAS | 0.5% | 0.3% | 0.2% |
| TDG | 0.3% | 0.7% | 0.5% |
| ODFL | 0.2% | 0.4% | 0.2% |
Where PRGFX and VIMAX 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 | PRGFX | VIMAX | Δ |
|---|---|---|---|
| Information Technology | 48.2% | 16.1% | +32.1pp |
| Industrials | 5.6% | 19.6% | −14.0pp |
| Communication Services | 13.1% | 2.8% | +10.4pp |
| Financials | 5.1% | 14.0% | −8.9pp |
| Utilities | 0.0% | 8.4% | −8.4pp |
| Energy | 0.0% | 7.3% | −7.3pp |
| Unclassified | 5.9% | 0.4% | +5.5pp |
| Real Estate | 0.5% | 5.1% | −4.5pp |
Δ is PRGFX minus VIMAX, 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
91.3% of PRGFX by weight, held in no part of VIMAX.
93.9% of VIMAX by weight, held in no part of PRGFX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| PRGFX | VIMAX | |
|---|---|---|
| Top 10 holdings | 62.8% | 9.5% |
| Positions held | 79 | 283 |
| Cost per $10,000 held, per year | $64 | $5 |
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 PRGFX and VIMAX overlap?
PRGFX and VIMAX overlap 4.3% by portfolio weight — largely distinct portfolios. They share 12 holdings. The figure comes from current issuer holdings files (PRGFX as of 2026-03-31, VIMAX as of 2026-06-30).
How is the overlap between PRGFX and VIMAX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If PRGFX holds a stock at 6% and VIMAX 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 PRGFX and VIMAX?
That depends on your goals — we state facts, not advice. At 4.3% overlap, each fund still contributes meaningfully distinct exposure.
What does PRGFX own that VIMAX doesn't?
PRGFX holds 79 positions and VIMAX holds 283; 66 of PRGFX's positions don't appear in VIMAX at all, and they are 91.3% of PRGFX by weight.
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Related comparisons
Sources: issuer holdings files, PRGFX as of 2026-03-31, VIMAX as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.