MFS International Diversification Fund
Actively managed U.S. stock fund
As of its 2026 Q2 report, MFS International Diversification Fund held 7 positions with $44.59B in net assets. Its ten largest holdings made up 99.9% of the fund. The MDIDX share class costs 1.08% a year. Over the 12 months to May 2026, MDIDX returned 22.5%, with dividends reinvested. In 2026 Q2 it added no new positions and exited none.
The funds investment objective is to seek capital appreciation.
The fund invests the majority of its assets in other MFS mutual funds rather than holding securities directly, selecting underlying funds based on their classifications, historical risk, and performance to achieve diversification across market capitalizations, investment styles, and geographies within international markets. Because the fund's returns depend on the performance of the underlying funds chosen, performance will reflect both the adviser's selection decisions and the results of those underlying funds.
What you own
| Company | Weight | Value | Shares | Reported price |
|---|---|---|---|---|
MRSKXMFS Research International Fund | 27.36% | $12.20B | 434.6M | $28.07 |
MFS Emerging Markets Equity Fund | 17.55% | $7.82B | 145.4M | $53.82 |
MGRDXMFS International Growth Fund | 15.00% | $6.69B | 135.5M | $49.35 |
MINJXMFS International Intrinsic Equity Fund | 14.97% | $6.68B | 142.1M | $46.97 |
MKVHXMFS International Large Cap Value Fund | 14.93% | $6.66B | 358.6M | $18.57 |
MFS International New Discovery Fund | 9.97% | $4.44B | 122.6M | $36.27 |
MFS Institutional Money Market Portfolio | 0.17% | $74.04M | 74.0M | $1.00 |
Reported price is the fund's own reported value divided by its own reported shares at 2026-05-31 — not a live quote, and not what the fund paid.
All 7 holdings, with the share counts as filed, open with a free account.
What the fund is made of
Percentages are of fund net assets. Rounding, liabilities and short positions can make totals differ from 100%.
| Stocks | 99.14% |
| Cash & short-term | 1.18% |
| Other | 0.04% |
Look-through blends 6 underlying funds; 0.166% of NAV was not looked through and stays direct-classified.
How it has done
MDIDX share class · total returns with dividends reinvested
Volatility over the last 12 months: 13.69%. Past returns are a record, not a forecast.
The 9 share classes hold the same portfolio
| Share class | Expense ratio | 1 year | 3 years | 5 years | Worst fall |
|---|---|---|---|---|---|
| 1.08% | +22.45% | +59.40% | +38.70% | -10.29% | |
| 0.83% | +22.78% | +60.54% | +40.48% | -10.28% | |
| 1.83% | +21.55% | +55.86% | +33.58% | -10.46% | |
| 1.83% | +21.54% | +55.81% | +33.65% | -10.49% | |
| 0.83% | +22.75% | +60.58% | +40.42% | -10.24% | |
| 1.83% | +21.51% | +55.78% | +33.59% | -10.48% | |
| 1.33% | +22.13% | +58.17% | +36.98% | -10.34% | |
| 1.08% | +22.43% | +59.38% | +38.68% | -10.33% | |
| 0.73% | +22.90% | +61.09% | +41.15% | -10.22% |
These classes hold the same portfolio, so the 7.57pp spread over 5 years is the cost difference between them — roughly 1.51pp a year — not a difference in what they own.
Fees & fund details
MFS International Diversification Fund is an actively managed U.S. equity fund.
- Asset class
- Equity
- Region
- United States
- Management
- Actively managed
- Fund type
- Open-end fund
- Features
- Fund of funds
- Expense ratio, by class
- 0.73% – 1.83%· MDIDX 1.08%
- Portfolio turnover
- 2.00% a year · as of 2025 Q3
Net is what a holder pays after the adviser's contractual waiver; gross is before it. A waiver can expire.
Turnover is how much of the portfolio was replaced in a year.
Classified from what the fund holds, not from its name · 2026 Q2. The summary is a paraphrase of the prospectus; the objective is verbatim.
What changed this quarter
Positions that entered or left the fund since its previous filing. Positions that were only resized are not listed.
0 new
0 exited
Understand how this fund fits with the rest.
Explore shared holdings, compare funds and follow their businesses with your connected AI:
- “Where do my funds overlap — MDIDX, QQQ and the fund in my 401(k)?”
- “How do this fund’s ten biggest holdings stack up against each other?”
- “For my target-date fund, what’s the real stock-and-bond mix once you look through it?”