Amundi vs iShares: Which ETF Provider Should Europeans Choose? (2026)

By Kestutis Balciunas·Reviewed August 26, 2026

Amundi is cheaper on the broad-index core, iShares is cheaper on the S&P 500, and the gap either way is one to thirteen basis points. Amundi Prime All Country World (IE0003XJA0J9) charges 0.07% against 0.20% for iShares MSCI ACWI (IE00B6R52259); Amundi Core MSCI World (IE000BI8OT95) charges 0.12% against 0.20% for iShares Core MSCI World (IE00B4L5Y983). Reverse it for the S&P 500: iShares CSPX is 0.07% and Amundi’s swap-based S&P 500 fund (LU1681048804) is 0.15%. All figures read off justETF on 26 August 2026.

If you are building a long-term UCITS portfolio from Europe, sooner or later you land on the same question I did years ago: does the ETF provider actually matter, or is a global equity fund a global equity fund? For a broad index, the underlying holdings from two reputable issuers are close to identical. What differs is cost, how deep the market is when you trade, and how likely the fund is to still exist, unchanged, in fifteen years. That last point matters more than most beginners think.

The honest answer on Amundi vs iShares is that both are excellent, both are among the safest homes for your money in Europe, and you do not have to pick a side for life. Amundi is Europe’s largest domestic issuer and the aggressor on price through its ultra-cheap Prime range. iShares, owned by BlackRock, is the biggest ETF brand on earth, with the deepest liquidity and the longest, cleanest track records on its flagship funds. I hold funds from both, and below I walk through where each one genuinely wins so you can match the provider to how you actually invest.

Who each provider actually is

Amundi is a French asset manager and the heavyweight of European-domiciled ETFs. A big part of that scale came from absorbing Lyxor — the deal completed on 31 December 2021 — which folded a large second range into its own line-up. The upside for us is enormous scale and a genuine willingness to compete on price. The Amundi Prime range in particular is built to be one of the cheapest ways to own a broad index in a UCITS wrapper, and Amundi has repeatedly cut fees to undercut rivals. If you are a cost-obsessed core buyer, this is the issuer that keeps handing you lower TERs.

Methodology: every shortlist on this page applies our ETF selection methodology.

iShares is BlackRock’s ETF arm and the global reference brand. When someone quotes a “standard” world or S&P 500 UCITS fund, they are usually naming an iShares product such as IWDA (developed world), EIMI (emerging markets) or CSPX (S&P 500). These funds are huge, old by ETF standards, and traded constantly across European exchanges. That combination of size and history is the quiet reason iShares stays many investors’ default even when it is not the cheapest option on the shelf.

Is Amundi or iShares cheaper?

Amundi on the world and all-country core, iShares on the S&P 500. Here are the figures rather than the direction, all read off justETF on 26 August 2026:

So the blanket claim that Amundi is the cheaper house does not survive contact with the S&P 500 shelf, which is where a large share of European buying actually happens. On the two world indices Amundi’s Prime and Core ranges are 8 to 13 basis points cheaper; on the S&P 500 iShares is 8 basis points cheaper than the Amundi swap fund. Fee wars move fast, so confirm the current figure on each factsheet before you buy — but buy on the number, not on the reputation.

Two caveats keep this from being a slam dunk. First, the cheapest quoted TER is not always the cheapest fund to own, because tracking difference (how far the fund lags its index after all real costs) can differ from the advertised fee. A fund with a slightly higher TER but better tracking can end up level, or even ahead, and our UCITS ETF comparison tool is built for exactly this side-by-side check. Second, a few basis points is real but small in absolute terms: on a €10,000 holding, five basis points is €5 a year. Worth capturing, not worth losing sleep over.

Does iShares really have better liquidity than Amundi?

On the flagships, yes, and the size gap is the reason. iShares Core MSCI World holds EUR 126.7bn against EUR 14.5bn in the Amundi Core equivalent, and iShares MSCI ACWI holds EUR 30.8bn against EUR 2.7bn in Amundi Prime All Country World. More assets means more market makers and tighter spreads — which matters for a lump sum and barely at all for a EUR 200 monthly order.

This is iShares’ home turf. Its flagship funds carry billions in assets and trade in large volume across Xetra, Borsa Italiana, Euronext and the LSE. In practice that means tighter bid-ask spreads and more consistent pricing, particularly when markets are choppy or when you place a larger order. The spread is a cost too, one you pay every time you buy or sell, and on a big or frequent trade it can quietly outweigh a small TER difference.

For a monthly saver drip-feeding €200 into a core fund, the spread gap between a huge Amundi fund and a huge iShares fund is usually trivial. It matters more if you are deploying a lump sum, trading larger blocks, or buying a thinner niche product. As a rule, the bigger and older the fund on either side, the less you need to worry. Our guide to the best iShares ETFs for European investors goes deeper on which funds carry the deepest order books.

Replication: physical versus synthetic

Both providers mostly run physical replication on their broad equity funds, meaning the fund actually holds the underlying shares. That is what most long-term investors want and it is the default for the flagship world and S&P 500 products on both sides.

The nuance is that Amundi, partly through the old Lyxor heritage, offers a meaningful number of synthetic (swap-based) funds. Synthetic replication uses a derivative to deliver the index return and can be genuinely useful in specific cases, most famously for US equity exposure where a swap structure can reduce the drag from US dividend withholding tax. It also introduces a small counterparty dimension, since you are relying on the swap partner. iShares leans more heavily physical across its core. Neither approach is “bad”, but if a synthetic fund tempts you on tax grounds, read the factsheet so the trade-off is a choice rather than a surprise.

Domicile: mostly the same story

For a European investor, fund domicile drives withholding tax on dividends inside the fund, and here the two providers are broadly aligned. Both issue the bulk of their core funds from Ireland, with some ranges in Luxembourg. Irish domicile is popular because Ireland’s tax treaty with the United States reduces the withholding rate on US dividends the fund receives, a quiet tailwind for any fund holding a lot of US stock. Check the domicile line on each factsheet, but in most head-to-heads on mainstream indices you will find both are Irish and the playing field is level on this axis.

Which provider’s funds are more likely to still exist in fifteen years?

iShares, and the inception dates say why. iShares Core MSCI World has been running since 25 September 2009 and CSPX since 19 May 2010. Amundi Core MSCI World launched on 17 January 2024 and Amundi Prime All Country World on 5 June 2024 — excellent funds, but with no long record to point at, and issued by the house with the recent history of mergers and renames.

Here is the factor that never shows up in a TER table and matters more than any single basis point. iShares’ flagship funds are old, stable and left alone. IWDA, EIMI and CSPX have long, uninterrupted track records, and BlackRock has little reason to merge or rebrand its most recognisable products.

Amundi’s rapid growth through acquisition has a flip side: a history of fund mergers, closures, rebrands and ISIN changes. When Lyxor funds were folded in, plenty were renamed and reorganised. None of this is negligence and it does not put your capital at risk. But for a holder it can mean admin, a changed ticker or ISIN to update in your records, and in some jurisdictions a fund merger or forced switch can trigger a small taxable event even though you never chose to sell. If you want to buy one fund and never think about it again, that longevity gap is a real, if unglamorous, reason people default to iShares for the buy-and-forget core. It is a theme I return to in our piece on what happens when an ETF closes or merges.

Range breadth

Both providers give you more choice than you will ever need. iShares has arguably the widest and deepest catalogue in the world, spanning core equity, bonds, factors, sectors and thematics, usually with a flagship that is the most liquid option in its category. Amundi’s range is also vast and, after the Lyxor integration, unusually strong in European exposures, thematics and swap-based products. For a one or two-fund core, both cover every mainstream index you would want; the breadth difference only matters once you go hunting for something niche.

Amundi vs iShares at a glance

My verdict: what I’d actually do

If you are a cost-obsessed core buyer and you want the lowest running fee on a broad world or S&P 500 index, Amundi Prime is hard to beat and is often the cheapest option on the shelf. I like it for exactly that role. If you value maximum liquidity, the longest track record and a fund you can hold for decades without ever having to react to a rebrand or merger, iShares is the reference and I would not talk anyone out of defaulting to it for the buy-and-forget core.

Rates referenced here follow our EU ETF tax dataset (2026), checked against official sources.

In practice, plenty of us end up with both, and that is fine. My own approach is to let the specific fund decide rather than the badge: I pick the index and exposure I want, then compare the two providers’ best fund for that job on TER, tracking difference, spread and domicile before I buy. For the head-to-head research I lean on our wider comparison of European ETF providers, and if you are weighing a third giant in, our Vanguard versus iShares breakdown covers that angle. If it is Amundi’s price weapon you are curious about, the Amundi Prime price war piece explains how far they have taken it.

One closing point on trust: both are large, heavily regulated UCITS issuers overseen within the EU framework. To sanity-check a fund’s regulatory standing or read the source documentation, the provider’s own factsheet and ESMA’s public register are the primary sources worth bookmarking. Start at the official iShares and Amundi ETF sites for factsheets. Both houses issue the bulk of their core range from Ireland, so the authority that actually authorises and supervises those funds is the Central Bank of Ireland, not the issuer’s home regulator — its UCITS pages carry the authorisation requirements and the fund register.

Quantify it before you choose: our free withholding tax and domicile calculator turns the Ireland-versus-Luxembourg question into a euro figure for your holding.

Frequently asked questions

Q: Is Amundi or iShares cheaper for a European investor?
A: It depends on the index, and the answer flips. On the world core Amundi wins: Prime All Country World (IE0003XJA0J9) charges 0.07% against 0.20% for iShares MSCI ACWI, and Amundi Core MSCI World (IE000BI8OT95) charges 0.12% against 0.20% for iShares Core MSCI World. On the S&P 500 iShares wins: CSPX charges 0.07% against 0.15% for the Amundi S&P 500 swap fund (LU1681048804). Figures from justETF, 26 August 2026. The cheapest fee is still not always the cheapest fund to own once tracking difference and spread are counted.

Q: Amundi or iShares for the S&P 500?
A: iShares, on cost as well as on size. CSPX (IE00B5BMR087) charges 0.07% and holds EUR 132.6bn; the Amundi S&P 500 Swap UCITS ETF EUR Acc (LU1681048804) charges 0.15% and holds EUR 2.8bn. The Amundi fund is synthetic, which can reduce US dividend-withholding drag and is a genuine argument in its favour — but it is not the cheaper or the more liquid of the two, and on this one index the usual Amundi-is-cheaper rule of thumb is simply wrong.

Q: Is Amundi safe?
A: Yes, in the sense that matters. Amundi is Europe’s largest asset manager and its core ETF range is authorised in Ireland, so the funds are ring-fenced UCITS whose assets sit with an independent depositary rather than on Amundi’s balance sheet — the Central Bank of Ireland sets and supervises those requirements. If Amundi failed tomorrow, the funds would be transferred or wound up and the underlying shares would still belong to the fund. The real Amundi-specific risk is administrative, not existential: mergers, renames and ISIN changes.

Q: Is iShares safer than Amundi?
A: Both are among the safest ETF issuers available to Europeans, being large, regulated UCITS providers, so your capital is not more at risk with one. iShares does have an edge in stability: its flagship funds have longer, uninterrupted track records, while Amundi has a history of mergers and rebrands that can create minor admin for holders.

Q: Why does Amundi keep renaming and merging its funds?
A: Much of it stems from Amundi absorbing Lyxor and folding a large second range into its own line-up, so funds were renamed and given new ISINs. It does not endanger your money, but a merger or forced switch can occasionally trigger a small taxable event in some countries even though you never chose to sell, so keep your records updated.

Q: Do Amundi and iShares use physical or synthetic replication?
A: Both mostly use physical replication on their core equity funds, meaning the fund holds the actual shares. Amundi offers more synthetic (swap-based) funds, which can be useful for US exposure on tax grounds but add a small counterparty element, so check the factsheet before buying a synthetic version.

Q: Where are Amundi and iShares ETFs domiciled?
A: Both issue most of their core funds from Ireland, with some ranges in Luxembourg. Irish domicile is common because Ireland’s US tax treaty reduces withholding tax on US dividends inside the fund. Check the domicile line on the specific factsheet, as it drives the internal dividend tax drag.

Q: Amundi vs iShares vs Vanguard — which should I default to?
A: Pick per fund, not per badge. On the developed-world index the three cheapest large options are Amundi Core MSCI World at 0.12%, iShares Core MSCI World at 0.20% and Vanguard’s FTSE Developed World at 0.12%; on the all-country index Amundi Prime All Country World at 0.07% undercuts both rivals. Vanguard’s argument is neither price nor liquidity but ownership structure and a very stable, very small range. If you want one house for everything, iShares has a flagship in almost every category; if you want the lowest running cost on a broad core, Amundi Prime usually has it.

Q: Can I hold both Amundi and iShares ETFs in the same portfolio?
A: Yes, and many investors do. There is no penalty for mixing providers, and it is a sensible way to capture Amundi’s low cost on one exposure and iShares’ liquidity on another. Just watch for overlap, since two providers’ world funds track similar indices and holding both adds duplication rather than diversification.

Kestutis Balciunas
European UCITS/ETF investor with 11+ years building a global dividend and index portfolio, and founder of Financial Expert Class. I write every guide here from first-hand experience investing across EU brokers and tax regimes — not theory. More about me →