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iShares Core FTSE 100 UCITS ETF GBP (Acc)Index, costs, backtest, listings and taxation

ISIN: IE00B53HP851Ticker: SXRW (Xetra) · CUKX (London SE) · CSUKX (SIX)Issuer: iShares
Issuer-declared data
Declared index
FTSE 100 Index
TER
0.07%
Transaction costs
0.04% (issuer estimate, from the KID)
Management
Passive (index-tracking)
Replication
Income policy
SFDR
Article 6 — does not promote specific ESG characteristics what does it mean?
Fund assets
3.8 bn EUR
NAV
221.53 GBP (1 September 2026)
Domicile
Ireland
Inception date
26 January 2010
Data as declared by iShares in the issuer’s official files and endpoints · collected on 2 September 2026 (monthly refresh). Facts only, no recommendation.
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Description

iShares Core FTSE 100 UCITS ETF GBP (Acc) tracks the issuer-declared index: FTSE 100 Index. The declared annual cost (TER) is 0.07%, plus 0.04% in transaction costs estimated by the issuer in the KID. Replication is physical replication (the KID declares buying all or a substantial number of the index constituents); income is accumulated and reinvested in the fund. The fund has assets of about 3.8 billion euro, was launched on 26 January 2010 and is domiciled in Ireland. In our registry 2 other ETFs declare the same index.

The fund’s objective — in the issuer’s words

The Fund aims to achieve a return on your investment, through a combination of capital growth and income on the Fund’s assets, which reflects the return of the FTSE 100 Index, the Fund’s benchmark index (Index). The Fund is passively managed and aims to invest so far as possible and practicable in the equity securities (e.g. shares) that make up the Index. The benchmark index measures the performance of the 100 companies listed on a stock exchange in the United Kingdom with largest market capitalisation, according to size, liquidity and free float criteria. Companies are included in the benchmark index based on a free float market capitalisation weighted basis. Free float means that only shares available to international investors rather than all of a company’s issued shares are used in calculating the benchmark index. Free float market capitalisation is the share price of a company multiplied by the number of shares available to international investors. Securities that are liquid means that they can be easily bought or sold in the market in normal market conditions. The Fund intends to replicate the Index by holding the equity securities which make up the Index, in similar proportions to it. The Fund may also engage in short-term secured lending of its investments to certain eligible third parties to generate additional income to off-set the costs of the Fund. The investment manager may use financial derivative instruments (FDIs) (i.e. investments the prices of which are based on one or more underlying assets) to help achieve the Fund’s investment objectives. FDIs may be used for direct investment purposes. The price of equity securities fluctuates daily and may be influenced by factors affecting the performance of the individual companies issuing the equities, as well as by daily stock market movements, and broader economic and political developments which in turn may affect the value of your investment. The relationship between the return on your investment, how it is impacted and the period for which you hold your investment is considered below (see “How long should I hold it and can I take my money out early?”).

Keep reading the KID section ▾

The depositary of the Fund is The Bank of New York Mellon SA/NV, Dublin Branch. Further information about the Fund can be obtained from the latest annual report and half-yearly reports of the iShares VII plc. These documents are available free of charge in English and certain other languages. These can be found, along with other (practical) information, including prices of units, on the iShares website at: www.ishares.com or by calling +49 89427295800 or from your broker or financial adviser.

Your shares will be accumulating shares (i.e. income will be included in their value). The Fund’s base currency is Sterling. The shares are listed and traded on various stock exchanges. In normal circumstances, only authorised participants may buy and sell shares directly with the Fund. Investors who are not authorised participants (e.g. select financial institutions) can generally only buy or sell the shares on the secondary market (e.g. via a broker on a stock exchange) at the then prevailing market price. The value of the shares are related to the value of the underlying assets of the Fund, less costs (see “What are the costs?” below). The prevailing market price at which the shares trade on the secondary market may deviate from the value of the Shares. Indicative net asset value is published on relevant stock exchanges websites.

Intended retail investor:The Fund is intended for retail investors with the ability to bear losses up to the amount invested in the Fund (see “How long should I hold it and can I take my money out early?”).

Insurance benefits:The Fund does not offer any insurance benefits.

From the KID’s “Objectives” section · 4 August 2026 · original document ↓
Text generated from the data the issuer declares in official product lists. No recommendation.

Quick reads

  • TER 0.07%: below the median of equity ETFs we track (0.22%).
  • Assets larger than 90% of equity ETFs we track.
  • Average tracking difference over the last 3 years: -0.14% p.a., against a declared TER of 0.07%.
Comparisons computed by Rebalix on the declared data in our census; they describe the past and are not indicative of future results.

Official documents

Key Information Document (KID)PDF in English, from the issuer’s site — always the latest filed versionProspectusPDF in English, from the issuer’s site — the fund’s full legal documentFactsheetPDF in English, from the issuer’s site — the fund’s monthly snapshot
The KID is the document the law requires you to read before investing: 3 pages covering risks, costs and scenarios. The link opens the issuer’s published PDF.

Fund performance

issuer-declared net asset value (NAV) · GBP · from Jan 2010 to Sept 2026
Compare with another ETF
Only funds we hold a history for. Three at a time, at most.
Return
+270.8%
Annualised
+8.2%
Volatility (ann.)
15.4%
Max drawdown
-34.23%
-10%+63%+137%+210%+284%Jan 2010Mar 2014May 2018Jun 2022Sept 2026The break-even line: the value at the start of the period. Above it you are in gain, below in loss.break-even (0%)+271%Jan 2010Sept 2026
Note — currency risk: the fund is denominated (or hedged) in GBP and the chart is in GBP. For a euro investor, returns also depend on the EUR/GBP exchange rate, up or down.
Tip: drag across the chart to zoom into a period.

Drawdown — distance from previous peak

This isn’t the return: it shows how far the fund is below its previous peak. 0% = you’re at the peak; below zero = how much you’re down and haven’t recovered yet.
0%-10%-20%-30%-40%-50%201020132016201920222025−34.23% · 23 Mar 2020
Max drawdown
-34.23%
peak → trough
Trough
23 Mar 2020
from the 17 Jan 2020 peak
Recovery time
571 days
recovery only: trough to break-even · ≈ 1 year and 7 months
Underwater
637 days
decline + recovery: peak to break-even · ≈ 1 year and 9 months · → recovered on 15 Oct 2021

The five worst falls in the period

From the peak ofTroughDepthBack to break-evenDays underwater
17 Jan 202023 Mar 2020-34.23%15 Oct 2021637
27 Apr 201511 Feb 2016-20.05%05 Aug 2016466
07 Jul 201104 Oct 2011-17.62%13 Mar 2012250
15 Apr 201001 Jul 2010-16.72%13 Oct 2010181
22 May 201827 Dec 2018-14.53%02 Jul 2019406

Calendar-year returns

2016
19.0%
2017
11.9%
2018
-8.8%
2019
17.2%
2020
-11.6%
2021
18.3%
2022
4.6%
2023
7.8%
2024
9.5%
2025
25.6%
2026
11.8%

Month-by-month returns

JanFebMarAprMayJunJulAugSeptOctNovDecYear
20263.07.0-6.22.30.71.03.60.20.111.8
20256.22.0-2.1-0.73.80.04.31.21.84.10.42.225.6
2024-1.30.44.82.72.1-1.12.50.9-1.6-1.52.6-1.39.5
20234.31.7-2.53.4-4.91.42.3-2.52.4-3.72.33.87.8
20221.10.31.50.71.1-5.53.7-1.1-5.23.07.1-1.54.6
2021-0.81.64.14.11.10.40.02.0-0.22.2-2.24.718.3
2020-3.4-9.0-13.54.03.31.7-4.21.7-1.5-4.812.73.3-11.6
20193.62.33.32.3-2.93.92.2-4.13.0-1.91.82.817.2
2018-2.0-3.4-2.16.82.8-0.21.5-3.31.2-4.9-1.6-3.5-8.8
2017-0.63.11.1-1.34.9-2.40.81.6-0.71.8-1.85.011.9
2016-2.50.81.81.40.34.73.41.71.81.0-2.05.419.0
20152.93.3-1.93.10.7-6.42.8-6.0-2.95.20.3-1.7-1.4
2014-3.55.0-2.63.11.4-1.3-0.12.0-2.8-1.03.1-2.30.6
20136.51.71.30.52.8-5.36.6-2.50.94.3-0.81.618.3
20122.03.9-1.4-0.3-6.85.01.22.00.70.81.90.59.5
2011-0.62.6-1.02.9-1.0-0.4-2.1-6.6-4.88.1-0.21.2-2.6
20103.76.4-2.1-6.1-5.07.0-0.16.32.4-2.36.715.0
From month-end NAVs, over the fund’s full history, on the series shown in the chart (dividends reinvested where declared). Deeper colour = larger move.
Source: iShares. Issuer-declared historical series; inflation: Eurostat and national statistical institutes, latest available July 2026 — for later days the index stays at the last published value (institutes publish with a few weeks’ lag). The «adjusted for inflation» view expresses value in today’s purchasing power for the selected country; volatility always stays nominal, as elsewhere on the site (deflating it would add artificial swings caused by the monthly cadence of the price index). Past performance is not indicative of future results: these are facts, not a recommendation.

Tracking difference — fund vs index

How much the fund returned above (+) or below (−) its index, year by year. It measures the actual deviation: the combined effect of costs (TER and transaction), securities-lending revenue and replication optimisations — which is why it can beat the TER. Tracking difference was positive in 0 of the last 10 calendar years: a past observation, not an indication of future outperformance.
Average TD (last 3 years)
-0.14% /anno
Declared TER
0.07%
YearFundIndexDifference
2025+25.64%+25.78%-0.14%
2024+9.49%+9.63%-0.14%
2023+7.77%+7.90%-0.13%
2022+4.62%+4.67%-0.05%
2021+18.28%+18.39%-0.11%
2020-11.62%-11.57%-0.04%
2019+17.16%+17.28%-0.12%
2018-8.84%-8.77%-0.07%
2017+11.88%+11.92%-0.04%
2016+19.00%+19.04%-0.04%
Total-return figures from issuer-declared series (primary source); complete calendar years. TD is not comparable across sites using different methodologies or index variants. Past performance is not indicative of future results. What is tracking difference? →

Risk indicators· EUR

Last yearLast 3 yearsLast 5 yearsLast 10 yearsFull history
Volatility (ann.)11.80%12.28%13.64%16.02%16.87%
Max drawdown-7.63%-16.87%-16.87%-39.79%-39.79%
Sharpe1.601.070.750.490.49
Sortino2.381.471.030.670.68
Computed from the daily NAV series, always in nominal terms. Sharpe and Sortino use the ECB main refinancing rate averaged over the period (last year: 2.20%), weighted by days in force, as the risk-free rate. Same formulas as our public methodology: sample standard deviation annualised over 252 days; Sortino with downside deviation. Past performance is not indicative of future results. Figures in EUR — series converted day by day at ECB reference rates; the table follows the currency selected in the chart.

Portfolio holdings

Securities in portfolio
101
110 total lines: 9 cash & derivatives
Top-10 weight
47.8%

Top 10 holdings

HSBC HOLDINGS PLC · HSBA
10.07%
SHELL PLC · SHEL
7.20%
ASTRAZENECA PLC · AZN
6.90%
ROLLS-ROYCE HOLDINGS PLC · RR.
4.92%
UNILEVER PLC · ULVR
3.86%
BRITISH AMERICAN TOBACCO · BATS
3.21%
BP PLC · BP.
3.10%
RIO TINTO PLC · RIO
3.05%
GLAXOSMITHKLINE · GSK
2.84%
BARCLAYS PLC · BARC
2.60%

Sectors

Financials
28.1%
Industrials
13.9%
Consumer Staples
13.3%
Health Care
11.5%
Energy
10.5%
Materials
8.5%
Utilities
4.4%

Countries

AfghanistanAngolaAlbaniaUnited Arab EmiratesArgentinaArmeniaFrench Southern and Antarctic LandsAustraliaAustriaAzerbaijanBurundiBelgiumBeninBurkina FasoBangladeshBulgariaThe BahamasBosnia and HerzegovinaBelarusBelizeBoliviaBrazilBruneiBhutanBotswanaCentral African RepublicCanadaSwitzerlandChileChinaIvory CoastCameroonDemocratic Republic of the CongoRepublic of the CongoColombiaCosta RicaCubaCyprusCzech RepublicGermanyDjiboutiDenmarkDominican RepublicAlgeriaEcuadorEgyptEritreaSpain: 0.6%EstoniaEthiopiaFinlandFijiFalkland IslandsFranceGabonUnited KingdomGeorgiaGhanaGuineaGambiaGuinea BissauEquatorial GuineaGreece: 0.2%GreenlandGuatemalaFrench GuianaGuyanaHondurasCroatiaHaitiHungaryIndonesiaIndiaIreland: 0.3%IranIraqIcelandIsraelItalyJamaicaJordanJapanKazakhstanKenyaKyrgyzstanCambodiaSouth KoreaKosovoKuwaitLaosLebanonLiberiaLibyaSri LankaLesothoLithuaniaLuxembourgLatviaMoroccoMoldovaMadagascarMexicoMacedoniaMaliMyanmarMontenegroMongoliaMozambiqueMauritaniaMalawiMalaysiaNamibiaNew CaledoniaNigerNigeriaNicaraguaNetherlands: 0.6%NorwayNepalNew ZealandOmanPakistanPanamaPeruPhilippinesPapua New GuineaPolandPuerto RicoNorth KoreaPortugalParaguayQatarRomaniaRussiaRwandaWestern SaharaSaudi ArabiaSudanSouth SudanSenegalSolomon IslandsSierra LeoneEl SalvadorSomaliaRepublic of SerbiaSurinameSlovakiaSloveniaSwedenSwazilandSyriaChadTogoThailandTajikistanTurkmenistanEast TimorTrinidad and TobagoTunisiaTurkeyTaiwanUnited Republic of TanzaniaUgandaUkraineUruguayUnited States of America: 0.2%UzbekistanVenezuelaVietnamVanuatuWest BankYemenSouth AfricaZambiaZimbabwe
up to 1%1–5%5–15%15–30%over 30%
Hover a country for its percentage.
Top 7 countries
United Kingdom98%
Spain0.6%
Netherlands0.6%
Ireland0.3%
Greece0.2%
Guernsey0.2%
United States0.2%
Download the full portfolio — Excel, 110 rows
Full portfolio declared by iShares, as of 31 August 2026: this is the summary. Percentages may not sum to 100 due to cash, derivatives and rounding.
Fund historyFund-assets (AUM) chart year by year and monthly basket snapshots.Open the history →

ETFs declaring the same index

FundTERIncomeFund size
ISF · iShares · 3 classes
0.07%Dist. · Acc.19.2 mld EUR
VUKE · Vanguard
0.09%Dist.7.8 mld EUR
3 ETFs in our census declare this index (including this fund). Funds declaring the exact same index, word for word, in official product lists. Differently-worded variants (or other index versions) are not shown: a short list beats a wrong match. Sorted by TER. A dash “—” = not declared by the issuer in the files we read — not a zero.

Italian taxation

Effective rate on capital gains
26.00%
White-list share
0.00%
From the government-bond («white list») share certified by the issuer every semester: 12.5% on that portion, 26% on the rest.
Deep-dive into this fund’s taxation →

Stock exchange listings

ExchangeTickerTrading since
Börse DüsseldorfSXRW17 Feb 2012
Börse FrankfurtSXRW23 May 2011
Börse HamburgSXRW1 Aug 2016
Börse HannoverSXRW9 Dec 2024
Börse München / gettexSXRW22 Dec 2010
Börse StuttgartSXRW1 Nov 2010
Tradegate ExchangeSXRW6 Apr 2011
Xetra (Deutsche Börse)SXRW10 Mar 2010
+ 17 more trading venues (MTFs and professional platforms).
Trading venues from the official ESMA register (FIRDS); per-exchange tickers from the issuer’s tax documents and official listings. A dash “—” = that venue does not publish the item (ticker, currency or start date) in the sources we read. The same fund may trade in different currencies depending on the exchange: check the trading currency with your broker. Non-EU listings (e.g. UK, Mexico) not included.

Frequently asked questions

Which index does iShares Core FTSE 100 UCITS ETF GBP (Acc) track?
The issuer iShares declares the benchmark: FTSE 100 Index.
How much does CUKX cost?
The issuer-declared TER is 0.07% per year; the transaction costs estimated in the KID are 0.04%.
How is CUKX taxed in Italy?
On sale, the capital gain is taxed at an effective 26.00% rate (white-list share 0.00%): 12.5% on the government-bond “white list” portion, 26% on the rest.
What is the fund size of CUKX?
The fund size declared by iShares is about 3.8 billion euro.
When was CUKX launched?
The fund was launched on 26 January 2010: it has 16 years of history.
How does CUKX replicate its index?
It is a passively managed ETF: it follows the declared index. Physical (issuer wording: “Fisica (dal KID)”).
Does CUKX pay dividends?
No: it is an accumulating share class — income stays in the fund and is reinvested automatically (issuer wording: “Accumulating”).
Where does CUKX trade?
Per the official ESMA register it trades on 8 main exchanges, including Börse Düsseldorf (SXRW), Börse Frankfurt (SXRW), Börse Hamburg (SXRW), Börse Hannover (SXRW), Börse München / gettex (SXRW), Börse Stuttgart (SXRW).
What was CUKX's worst fall?
Over the available history (since 2010), the maximum drawdown was -34.23%, reached in March 2020. Past performance is not indicative of future results.
What is CUKX's tracking difference?
Over the last 3 complete calendar years the fund returned on average -0.14% per year versus its index (from issuer-declared series).
How many securities does CUKX hold?
The declared portfolio holds 101 securities (plus 9 cash & derivative lines); the top 10 positions weigh 47.8%.
Transparency note
The data in this sheet is declared by iShares in the issuer’s official files and endpoints, collected by Rebalix with a monthly refresh; taxation derives from the issuer’s tax documents (Italian Law Decree 138/2011). This is factual information for informational purposes only: it is not financial or tax advice, nor an investment recommendation. Read the fund’s KID and prospectus before investing.