Comparison window: 26 Jan 2010 → 31 Aug 2026 (max: from the most recent launch) · currency: 🇪🇺 EUR · inflation: 🇮🇹 Italy · distributions: reinvested where declared
Report produced on 5 September 2026 · data as of the dates shown per section Sources: official issuer documents (KID, factsheet, declared NAV series and holdings), ESMA register, ECB rates, Eurostat Public methodology: rebalix.com/en/methodology
Informational document generated by rebalix.com — facts side by side, no recommendations. It does not constitute investment advice or investment research under Directive 2014/65/EU (MiFID II). Past performance is not indicative of future results.
CUKX — iShares Core FTSE 100 UCITS ETF GBP (Acc) · IE00B53HP851 · Equity · United Kingdom · Large cap
ISF — iShares Core FTSE 100 UCITS ETF · IE0005042456 · Equity · United Kingdom · Large cap
Performance over the period, in euro
From 26 Jan 2010 to 31 Aug 2026 · base 100 · ECB rates, dividends reinvested where declared
In euro (nominal)
In today’s purchasing power (net of Italy inflation)
Same scale in both panels: the gap between endpoints is Italian inflation over the period (Eurostat). Volatility stays nominal, as everywhere on the site.
How far they fell — drawdown from peak (nominal)
In euro · distance from the previous peak, day by day, on NAV: for distributing classes it includes ex-dividend drops (slightly deeper than total return)
Filled area: CUKX; thin lines: the other funds.
The worst episode, fund by fund
Fund
Max drawdown
Trough
Recovery time
Underwater
CUKX
−39.8%
23 Mar 2020
570 days
636 days · back to break-even on 14 Oct 2021
ISF
−47.3%
23 Mar 2020
1,774 days
3,536 days · back to break-even on 30 Jan 2025
"Recovery time" = the climb only: trough to break-even (0%). "Underwater" = decline + recovery: peak to break-even.
Drawdown net of Italy inflation
Same curve in purchasing-power terms: as on the site, drawdown follows the real view (volatility stays nominal, per methodology)
In real terms declines are deeper and recoveries slower. Monthly price index (Eurostat), held at the last published value.
CUKX — iShares Core FTSE 100 UCITS ETF GBP (Acc) · IE00B53HP851 · Equity · United Kingdom · Large cap
ISF — iShares Core FTSE 100 UCITS ETF · IE0005042456 · Equity · United Kingdom · Large cap
Geographic composition
% of portfolio, from full declared holdings
Sector composition
GICS sectors, same sources and dates
Portfolio overlap
101 common holdings · ticker match on full official portfolios
How the shared part is computed: for each security held by both funds, only the SMALLER of the two weights counts — a stock at 5% in one fund and 1% in the other overlaps by 1%, not 5%. Summed over all 101 common holdings this gives 98.6%: buying both funds, roughly this share of your money buys the same stocks twice.
"—" = not published by the source, never estimated
CUKX — iShares Core FTSE 100 UCITS ETF GBP (Acc) · IE00B53HP851 · Equity · United Kingdom · Large cap
ISF — iShares Core FTSE 100 UCITS ETF · IE0005042456 · Equity · United Kingdom · Large cap
Metric
CUKX
ISF
Note
Identity
Category
Equity · United Kingdom · Large cap
Equity · United Kingdom · Large cap
Rebalix engine classification
Replication
Physical
Physical
as declared by the issuer
Currency hedging
No
No
source: class name, factsheet
Income policy
accumulating
distributing
—
Costs
TER
0.07%
0.07%
from the KID
Transaction costs (KID)
0.04%
0.03%
internal
All-in cost
0.11%
0.10%
TER + transaction
Tracking difference (3a)
−0.14%
−0.12%
vs its OWN index
Performance in euro (ECB rates)
1 year
+22.9%
+22.9%
—
3 years
+60.9%
+61.0%
—
5 years
+80.4%
+80.5%
—
10 years
+127.0%
+127.5%
— = series younger than the window
Risk · last 3 years
Volatility (ann.)
+11.11%
+11.26%
—
Max drawdown
−12.93%
−13.41%
—
Sharpe
1.18
0.86
risk-free = ECB MRO avg
Sortino
1.68
1.19
like Sharpe, downside only
Distributions (fund currency)
Frequency
accumulating class
quarterly
—
Distributions, last 12 months
accumulating class
0.30 GBP
per share
Distribution yield
accumulating class
2.83%
12 months / NAV
Last ex-date
accumulating class
18 Jun 2026 · 0.13 GBP
—
Italian taxation
Effective capital-gains rate
26.00%
26.00%
white list, current half-year
Documents & exchanges
Listing venues
8
10
ESMA register
Borsa Italiana ticker
—
ISF
—
Indicative cumulative cost: on 10,000 euro over 5 years (stated assumption: 5%/yr growth, cost = TER + transaction) ~70 euro CUKX · ~64 euro ISF. Broker costs not included.
Disclaimer
This document is for information only and does not constitute investment advice under Directive 2014/65/EU (MiFID II), investment research, a personal recommendation, or an offer or solicitation to buy or sell financial instruments.
Past performance is not indicative of, nor a guarantee of, future results. The value of an investment can go down as well as up and investors may not get back the capital invested. Euro returns are affected by currency fluctuations.
Before any investment decision, read the KID and the Prospectus, available from the issuers. Tax treatment depends on individual circumstances and may change.
Data come from official issuer documents and public registers, following the public methodology at rebalix.com/en/methodology. "—" fields were not published by the source and have not been estimated. Rebalix receives no compensation from the issuers mentioned.