PRGFX vs TSPI: 1% overlap
T. Rowe Price Growth Stock and TSP I Fund — shown via international proxy share 1.0% 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 TSPI hold 3 of the same securities. The ten contributing most to the overlap figure:
| Holding | in PRGFX | in TSPI | Δ |
|---|---|---|---|
| ASML | 0.7% | 1.7% | 1.0% |
| SHOP | 0.6% | 0.3% | 0.3% |
| INTU | 0.3% | 0.0% | 0.3% |
Where PRGFX and TSPI 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 | TSPI | Δ |
|---|---|---|---|
| Information Technology | 48.2% | 20.9% | +27.3pp |
| Financials | 5.1% | 19.7% | −14.6pp |
| Communication Services | 13.1% | 3.3% | +9.9pp |
| Industrials | 5.6% | 13.8% | −8.2pp |
| Materials | 0.2% | 5.2% | −5.0pp |
| Consumer Staples | 0.8% | 4.9% | −4.0pp |
| Cash & Other | 3.5% | 0.0% | +3.5pp |
| Unclassified | 5.9% | 9.1% | −3.2pp |
Δ is PRGFX minus TSPI, 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
95.0% of PRGFX by weight, held in no part of TSPI.
98.0% of TSPI 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 | TSPI | |
|---|---|---|
| Top 10 holdings | 62.8% | 16.3% |
| Positions held | 79 | 8,453 |
| 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 TSPI overlap?
PRGFX and TSPI overlap 1.0% by portfolio weight — largely distinct portfolios. They share 3 holdings. The figure comes from current issuer holdings files (PRGFX as of 2026-03-31, TSPI as of 2026-06-30).
How is the overlap between PRGFX and TSPI 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 TSPI 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 TSPI?
That depends on your goals — we state facts, not advice. At 1.0% overlap, each fund still contributes meaningfully distinct exposure.
What does PRGFX own that TSPI doesn't?
PRGFX holds 79 positions and TSPI holds 8,453; 75 of PRGFX's positions don't appear in TSPI at all, and they are 95.0% of PRGFX by weight.
You probably hold more than two funds
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Related comparisons
Sources: issuer holdings files, PRGFX as of 2026-03-31, TSPI as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.