WEBN ETF factsheet 2026: Amundi Prime All-Country World explained

By Kestutis Balciunas·Reviewed August 24, 2026

This WEBN ETF factsheet 2026 covers the Amundi Prime All Country World UCITS ETF (Acc) — the fund that broke the price floor for global investing in Europe. At roughly 0.07% TER, WEBN undercuts every established all-world competitor by a wide margin. It holds around 3,400 developed- and emerging-market stocks in a single accumulating, Irish-domiciled wrapper. On paper, it looks like the cheapest complete portfolio a European can buy.

Why are cores so cheap now? See how Amundi started the TER race.

Ready to buy? Follow the Scalable buying guide.

For the head-to-head verdict, read how WEBN and FWRA compare.

I have followed this fund closely since its launch in June 2024, and I want to be straight with you from the start. The headline fee is genuinely remarkable. But WEBN is still a young fund, it tracks a Solactive index rather than the FTSE or MSCI benchmarks most investors know, and its real-world cost is measured by tracking difference, not the TER alone. This guide covers all of that honestly, including a dedicated section on how WEBN has actually tracked its index so far.

WEBN ETF at a glance

Figures are approximate and change over time — verify current details on the Amundi factsheet or justETF before you invest. Note the fund holds around 3,400 stocks and had gathered over €2 billion in assets within its first two years.

What the WEBN ETF actually tracks

The WEBN ETF tracks the Solactive GBS Global Markets Large & Mid Cap index. Despite the technical name, the concept is simple. It is an all-country world index: large and mid-cap companies from both developed and emerging markets, weighted by market capitalisation. In practice, that makes it a direct competitor to the FTSE All-World (which VWCE tracks) and the MSCI ACWI family.

The exposure looks very familiar. The United States dominates at well over half the fund, the top holdings are the usual mega-cap technology names, and emerging markets fill out roughly a tenth of the portfolio. If you placed WEBN’s country and sector weights next to VWCE’s, you would struggle to tell them apart at a glance.

So why Solactive? Cost. Index licensing fees from FTSE and MSCI are a meaningful expense for a fund provider. Solactive licenses its benchmarks far more cheaply, and Amundi passes that saving on through the ultra-low TER. The trade-off is subtle: Solactive’s inclusion rules, rebalancing schedule and country classifications differ slightly from FTSE’s and MSCI’s. Over short periods, these differences produce return gaps of a few basis points either way. They are not better or worse — just not identical. I cover Amundi’s wider low-cost range in my Amundi Prime All-Country World deep dive.

WEBN vs WEBG: the two share classes

Amundi offers this fund in two distribution modes, and the tickers are easy to confuse:

• WEBN — accumulating: dividends are reinvested inside the fund automatically. This is the compounding-friendly option for most accumulation-phase investors.
• WEBG — distributing: dividends are paid out to your broker account. This suits investors who want visible cash income.

The underlying portfolio is the same. Only the treatment of dividends differs. In most European jurisdictions, the accumulating class defers dividend tax until you sell, which quietly improves long-run compounding. A few countries tax notional accumulated income annually, however, so check your local rules. If your goal is decades of hands-off growth, WEBN is usually the natural pick; if you are building an income stream, WEBG does the paperwork for you.

WEBN ETF costs and tracking difference

The TER of roughly 0.07% is the headline act. To put it in context: VWCE charges around 0.14% after Vanguard’s fee cuts. On a €100,000 portfolio, that gap is worth roughly €70 a year. Over 25 years of compounding, it still adds up. You can model your own numbers with the ETF fee calculator.

But here is the part many investors miss. The TER is not the true cost of owning an ETF. The true cost is the tracking difference — how far the fund’s actual return falls behind (or beats) its index over a given period. Tracking difference bundles together the TER, internal trading costs, withholding-tax efficiency and any revenue the fund earns from securities lending.

How WEBN has tracked its index so far

“WEBN tracking difference” is one of the most searched questions about this fund, so let me address it directly. In its first two years, WEBN has tracked the Solactive benchmark tightly — the realised gap between fund and index has stayed close to the TER, and in some periods narrower than it. Two mechanics help. First, the Irish domicile reduces US dividend withholding tax to 15% under the Ireland–US treaty, which matters for a fund that is majority US equities. Second, the fund engages in securities lending, and that lending revenue partially offsets running costs.

Now the honest caveat. Two years is a short window. Established funds like VWCE have a decade of tracking-difference history across different market regimes; WEBN simply does not yet. Early data is encouraging, but it is early data. A sensible reading is this: WEBN’s structural ingredients — rock-bottom TER, Irish domicile, physical replication, lending income — all point towards a very low long-run tracking difference. Just treat that as a well-founded expectation rather than a proven record, and check the latest figures on justETF before you commit.

How WEBN compares: VWCE, FWRA and SPYI

The WEBN ETF entered a market that already had strong all-world options. The table below lines up the main UCITS contenders. Treat every fee figure as illustrative and confirm live numbers before deciding.

The short version: VWCE is the incumbent — bigger, older and tracking the better-known FTSE All-World index, at three times the fee. FWRA splits the difference, offering the FTSE index at a mid-range price. SPYI goes broader still by adding small caps through the MSCI ACWI IMI. WEBN wins on cost, full stop, and its asset growth suggests European investors have noticed. I run the head-to-head numbers in VWCE vs WEBN, and the wider field is mapped in the all-world comparison hub. To line these funds up side by side yourself, use the UCITS ETF comparison tool.

Who the WEBN ETF suits

• Cost-focused accumulators who want the cheapest possible one-fund global portfolio and plan to hold for decades.
• Investors starting fresh with no existing position, for whom there is no switching cost or capital-gains event to worry about.
• Pragmatists who care about exposure and cost rather than whether the index label says FTSE, MSCI or Solactive.

It is less obvious for investors who already hold a large VWCE position with embedded gains — selling to save 0.15 points of fee can trigger a tax bill that takes years to recoup. It also suits nervous investors less well: if a short track record would keep you up at night, the peace of mind from an established fund has genuine value.

My take on WEBN

I will give you my honest position after eleven years of doing this. The WEBN ETF is the fund I point to when people ask what price competition in ETFs looks like. A complete global portfolio for 0.07% would have sounded absurd a decade ago. The structure is sound: physical replication, Irish domicile, an index that behaves almost identically to the FTSE All-World, and early tracking numbers that back up the low fee.

My reservations are the honest kind, not deal-breakers. The fund is young. The Solactive index, while perfectly respectable, lacks the decades of published history of FTSE and MSCI benchmarks. And securities lending, while it boosts returns, adds a small layer of counterparty complexity that some investors prefer to avoid. None of these would stop me holding WEBN as a core position. But if I already held VWCE with large unrealised gains, I would direct new money to WEBN rather than sell and switch. That is the boring, tax-aware answer — and boring is usually right in investing.

Common mistakes

• Judging the fund on TER alone. Tracking difference is the real cost. WEBN’s early numbers are good, but always check the realised gap, not just the headline fee.
• Buying WEBG when you meant WEBN. One letter separates the distributing class from the accumulating one, and the long-run tax outcome can differ meaningfully.
• Selling an established holding to switch without checking tax. Realising gains to save a few basis points is often a net loss. Run the numbers first.
• Assuming Solactive means inferior. The index is a legitimate all-country benchmark; it is different from FTSE All-World in small ways, not deficient.
• Ignoring the age of the fund. A two-year track record tells you less than a ten-year one. That is a real, if modest, limitation — price it in consciously.

Key takeaways

• The WEBN ETF is the Amundi Prime All Country World UCITS ETF (Acc): ~3,400 developed- and emerging-market stocks, physical, Irish-domiciled, ~0.07% TER — always confirm live figures on the issuer factsheet.
• It tracks the Solactive GBS Global Markets Large & Mid Cap index — an all-country benchmark that behaves almost identically to FTSE All-World, with minor methodology differences.
• WEBN is the accumulating class; WEBG is the distributing version of the same portfolio.
• Early tracking difference has been tight, helped by the Irish domicile and securities-lending revenue — but two years of data is a promising start, not a proven record.
• VWCE offers a longer history and bigger AUM at three times the fee; FWRA and SPYI sit in between. New money favours WEBN; switching an existing position needs a tax check first.

FAQ

Q: What is the difference between WEBN and WEBG?
A: Same Amundi all-country fund, different share classes. WEBN accumulates (reinvests dividends internally); WEBG distributes (pays dividends out). Accumulators usually prefer WEBN for tax deferral and compounding.

Q: What index does WEBN track?
A: The Solactive GBS Global Markets Large & Mid Cap index — an all-country world benchmark covering developed and emerging markets, comparable in exposure to the FTSE All-World and MSCI ACWI.

Q: What is WEBN’s tracking difference so far?
A: In its first two years the fund has tracked its index tightly, with the realised gap staying close to — and at times below — the TER, helped by withholding-tax efficiency and securities-lending income. Check justETF for the latest figures, as two years is a short sample.

Q: Is WEBN physical or synthetic?
A: Physical — Amundi holds the underlying shares directly. The fund does engage in securities lending, which generates extra revenue but introduces a small, collateralised counterparty exposure.

Q: WEBN or VWCE?
A: WEBN is half the fee (~0.07% vs ~0.14%) with near-identical exposure; VWCE offers a decade-long record, larger assets and the better-known FTSE index. For new money, WEBN’s cost case is strong. For an existing VWCE position, check the tax cost of switching before you sell.

Q: Is the Solactive index worse than FTSE or MSCI?
A: No — it is a legitimate, rules-based all-country benchmark. The differences lie in inclusion criteria, rebalancing schedules and country classifications, which produce small return gaps in either direction rather than a systematic disadvantage.

Q: Is WEBN too new to trust?
A: It launched in June 2024, so the track record is short — that is a fair concern. Offsetting it: Amundi is one of Europe’s largest asset managers, the fund gathered over €2 billion quickly, and the structure (physical, Irish UCITS) is entirely conventional.

Q: Does WEBN include small caps?
A: No — it covers large and mid caps only. If you want small-cap exposure inside one all-world fund, SPDR’s SPYI (MSCI ACWI IMI) is the usual alternative, at a higher TER.

Q: Is WEBN currency-hedged?
A: No. The fund’s underlying exposure spans dozens of currencies, with the US dollar dominant. Buying the EUR line on Xetra or gettex changes the trading currency, not the underlying currency risk.

Q: Where can I confirm WEBN’s current TER and AUM?
A: On the Amundi issuer factsheet or justETF. Fees, fund size and holdings all move over time, so verify before you buy.

Cited sources: justETF and Morningstar. Check current TER, AUM and holdings on the issuer factsheet — figures change.

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 →