IVW vs PRGFX: 63% overlap
iShares S&P 500 Growth ETF and T. Rowe Price Growth Stock share 63.2% 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 — PRGFX 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 1.4. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
IVW and PRGFX hold 36 of the same securities. The ten contributing most to the overlap figure:
| Holding | in IVW | in PRGFX | Δ |
|---|---|---|---|
| NVDA | 14.7% | 13.8% | 0.9% |
| MSFT | 8.2% | 9.1% | 0.8% |
| AAPL | 6.9% | 11.1% | 4.2% |
| GOOGL | 5.4% | 7.0% | 1.6% |
| AVGO | 5.4% | 5.1% | 0.3% |
| META | 3.9% | 3.9% | 0.0% |
| AMZN | 3.5% | 4.9% | 1.4% |
| LLY | 2.7% | 3.0% | 0.2% |
| TSLA | 1.6% | 2.7% | 1.1% |
| AMD | 2.6% | 1.1% | 1.4% |
Where IVW and PRGFX 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 | IVW | PRGFX | Δ |
|---|---|---|---|
| Unclassified | 0.0% | 5.9% | −5.9pp |
| Information Technology | 52.5% | 48.2% | +4.3pp |
| Financials | 9.2% | 5.1% | +4.1pp |
| Cash & Other | 0.0% | 3.5% | −3.5pp |
| Consumer Discretionary | 8.0% | 10.7% | −2.7pp |
| Communication Services | 14.7% | 13.1% | +1.6pp |
| Industrials | 6.6% | 5.6% | +1.1pp |
| Utilities | 0.4% | 0.0% | +0.4pp |
Δ is IVW minus PRGFX, 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
33.3% of IVW by weight, held in no part of PRGFX.
12.9% of PRGFX by weight, held in no part of IVW.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| IVW | PRGFX | |
|---|---|---|
| Top 10 holdings | 58.2% | 62.8% |
| Positions held | 149 | 79 |
| Cost per $10,000 held, per year | $18 | $64 |
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 IVW and PRGFX overlap?
IVW and PRGFX overlap 63.2% by portfolio weight — substantial duplication if you hold both. They share 36 holdings. The figure comes from current issuer holdings files (IVW as of 2026-07-23, PRGFX as of 2026-03-31).
How is the overlap between IVW and PRGFX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If IVW holds a stock at 6% and PRGFX 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 IVW and PRGFX?
That depends on your goals — we state facts, not advice. At 63.2% overlap, each fund still contributes meaningfully distinct exposure.
What does IVW own that PRGFX doesn't?
IVW holds 149 positions and PRGFX holds 79; 112 of IVW's positions don't appear in PRGFX at all, and they are 33.3% of IVW by weight.
You probably hold more than two funds
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Related comparisons
Sources: issuer holdings files, IVW as of 2026-07-23, PRGFX as of 2026-03-31. Weights are fractions of each fund. Diagnostics, not advice.