ETF comparison · Global core
IWDA vs SWRD: overlap by weight, TER & holdings
iShares Core MSCI World UCITS ETF USD (Acc) vs SPDR MSCI World UCITS ETF (Acc)
The same MSCI World exposure at two fees. SWRD is cheaper; IWDA is several times larger with tighter spreads on most venues. For identical index exposure, total cost of ownership decides.
IWDA also trades as SWDA (LSE (GBP) / Milan), EUNL (Xetra).
IWDA vs SWRD at a glance
| IWDA | SWRD | |
|---|---|---|
| Fund | iShares Core MSCI World UCITS ETF USD (Acc) | SPDR MSCI World UCITS ETF (Acc) |
| ISIN | IE00B4L5Y983 | IE00BFY0GT14 |
| Index | MSCI World | MSCI World |
| Market exposure | Developed markets | Developed markets |
| TER | 0.20% | 0.12% |
| Holdings in fund | 1,186 | 1,208 |
| Fund size | ≈ 120 bn USD | ≈ 12 bn USD |
| Domicile | Ireland | Ireland |
| Replication | Physical (optimized sampling) | Physical (optimized sampling) |
| Use of income | Accumulating | Accumulating |
| Launched | Sep 25, 2009 | Feb 28, 2019 |
Top shared holdings
| IWDA | SWRD | |
|---|---|---|
| NVDANVIDIA | 5.66% | 5.68% |
| AAPLAPPLE | 5.47% | 5.49% |
| MSFTMICROSOFT | 3.86% | 3.87% |
| AMZNAMAZON.COM INC | 2.72% | 2.73% |
| GOOGLALPHABET CLASS A | 2.28% | 2.28% |
| AVGOBROADCOM INC | 1.79% | 1.8% |
| GOOGALPHABET CLASS C | 1.78% | 1.79% |
| METAMETA PLATFORMS CLASS A | 1.62% | 1.62% |
| MUMICRON TECHNOLOGY | 1.27% | 1.27% |
| TSLATESLA INC | 1.16% | 1.16% |
| JPMJPMORGAN CHASE & CO | 1.04% | 1.03% |
| LLYELI LILLY | 1.03% | 1.03% |
| AMDADVANCED MICRO DEVICES | 1.01% | 1.01% |
| XOMEXXONMOBIL HOLDINGS CORP | 0.76% | 0.76% |
| JNJJOHNSON & JOHNSON | 0.71% | 0.72% |
Weights per fund, normalized. 1,096 companies appear in both funds.
What the fee gap costs
Growth of 10,000 invested at 7% annual return, after each fund’s TER: 0.20% for IWDA, 0.12% for SWRD.
| IWDA | SWRD | Difference | |
|---|---|---|---|
| After 10 years | 19,307 | 19,452 | 145 |
| After 20 years | 37,276 | 37,838 | 562 |
| After 30 years | 71,968 | 73,603 | 1,635 |
SWRD comes out ahead by about 1,635 per 10,000 invested over 30 years. TER only. Trading spreads, taxes and broker fees are not included.
Domicile and withholding tax
Both funds are domiciled in Ireland, so fund-level dividend withholding works the same way for both. Domicile does not separate this pair.
Frequently asked questions
Do IWDA and SWRD overlap?+
Yes: 93.67% by weight, with 1,096 holdings appearing in both funds. 95.88% of IWDA’s weight is also inside SWRD.
Do IWDA and SWRD track the same index?+
Yes. Both funds track the same index: MSCI World. Return differences come from fees, replication and trading costs, not from index choice.
Which is cheaper, IWDA or SWRD?+
SWRD: 0.12% per year against 0.20% for IWDA. At 7% growth that gap is worth about 1,635 per 10,000 invested over 30 years.
Is it worth holding both IWDA and SWRD?+
Holding both mostly duplicates exposure: 93.67% of the pair overlaps by weight. Most investors pick one, or combine one of them with a fund covering different markets.
More comparisons
Methodology
Overlap is the sum of min(weight A, weight B) across holdings that appear in both funds, with each fund’s stored weights normalized to 100%. Holdings come from issuer feeds and regulatory filings in our ETF holdings database; TER and fund size come from fund profile data and are refreshed regularly. Figures update when the underlying holdings data updates.
Holdings data as of Sep 21, 2026, from our ETF holdings database.