iShares MSCI ACWI vs SPDR MSCI ACWI IMI
iShares MSCI ACWI tracks MSCI ACWI and SPDR MSCI ACWI IMI tracks MSCI ACWI IMI. They are realistic alternatives for the same slot in a portfolio, but because the indices are different nobody can tell you in advance which will return more. What can be compared objectively is the cost, the replication method, the domicile and how each one is structured — and that is what this page does.
What each one tracks
This is the underlying difference: they do not follow the same index, so their returns will diverge.
iShares MSCI ACWI
MSCI ACWI
SPDR MSCI ACWI IMI
MSCI ACWI IMI
Comparison
| iShares MSCI ACWI | SPDR MSCI ACWI IMI | |
|---|---|---|
| Index | MSCI ACWI | MSCI ACWI IMI |
| TER | 0.20% | 0.17% |
| Hist. return* | ~8% | ~8% |
| Replication | Physical | Physical |
| Distribution | Accumulating | Accumulating |
| Domicile | Irlanda | Irlanda |
| Currency | USD | USD |
| Risk | 4/7 | 4/7 |
| ISIN | IE00B6R52259 | IE00B3YLTY66 |
What the fee gap actually costs
Applying the SAME 7% gross return to both and contributing €300/month, the only thing moving the result is the TER. This is not a return forecast: it is how much the fee weighs.
| Horizon | iShares MSCI ACWI | SPDR MSCI ACWI IMI | Difference |
|---|---|---|---|
| 10 years | €51,649 | €51,735 | €86 |
| 20 years | €153,402 | €153,963 | €561 |
| 30 years | €353,865 | €355,963 | €2,098 |
SPDR MSCI ACWI IMI is the cheaper of the two. Remember they track different indices: cost is one factor, not the verdict.
Nobody can know which will perform better: they track different indices and past performance is not a prediction. What is objective today is the cost, the replication, the domicile and the distribution policy.
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Create free accountFrequently asked questions
What is the difference between iShares MSCI ACWI and SPDR MSCI ACWI IMI?+
They track different indices: iShares MSCI ACWI follows MSCI ACWI and SPDR MSCI ACWI IMI follows MSCI ACWI IMI. They also differ in cost (0.20% vs 0.17% TER), replication (physical vs physical) and domicile (Irlanda vs Irlanda).
Which one will perform better?+
Nobody can know that: they track different indices, so their returns will diverge, and past index performance is not a prediction. What you can control today is the cost, the tax structure and whether the index actually covers what you want exposure to.
Which one is cheaper?+
SPDR MSCI ACWI IMI has the lower annual fee. Applying the same 7% gross return to both with €300/month, that fee gap alone is worth about €561 after 20 years — that part is arithmetic, not a forecast.
Accumulating or distributing?+
Both are accumulating, so on this point there is no difference between them.
Can I hold both?+
Yes. Unlike two funds tracking the identical index, these give you genuinely different exposure, so holding both is not automatically redundant — just be aware you may end up overlapping on the largest companies and doubling your rebalancing work.