iShares Core FTSE 100 UCITS ETF (ISF-L)
Top ETFs · UK · data since 2009-01-02 · last close 2026-09-09
iShares Core FTSE 100 UCITS ETF (ISF-L) monthly returns (%)
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 3.1 | 7.1 | -6.7 | 2.2 | 0.8 | -0.4 | 3.7 | 0.2 | -1.4 | · | · | · |
| 2025 | 6.3 | 1.9 | -2.8 | -0.2 | 3.9 | -1.3 | 4.2 | 1.3 | 0.8 | 4.3 | 0.3 | 1.7 |
| 2024 | -1.3 | 0.3 | 4.2 | 2.5 | 2.1 | -2.4 | 2.5 | 0.8 | -2.6 | -1.4 | 2.6 | -1.9 |
| 2023 | 4.3 | 1.6 | -2.8 | 3.3 | -5.0 | 0.0 | 2.3 | -2.5 | 1.3 | -3.6 | 2.0 | 3.2 |
| 2022 | 1.4 | 0.3 | 1.1 | 0.7 | 1.0 | -6.8 | 3.7 | -1.1 | -6.1 | 2.8 | 7.0 | -2.2 |
| 2021 | -1.0 | 1.6 | 3.2 | 4.0 | 1.1 | -0.9 | 0.3 | 1.9 | -1.6 | 2.3 | -2.3 | 4.0 |
| 2020 | -3.4 | -9.0 | -14.6 | 4.3 | 2.9 | 0.9 | -3.9 | 1.6 | -2.4 | -4.5 | 12.4 | 2.9 |
| 2019 | 3.5 | 2.1 | 2.2 | 2.5 | -3.0 | 2.6 | 2.2 | -4.1 | 1.7 | -1.9 | 1.7 | 2.0 |
| 2018 | -2.3 | -3.4 | -2.7 | 6.7 | 2.7 | -1.3 | 1.5 | -3.4 | 0.0 | -4.8 | -1.7 | -4.1 |
| 2017 | 0.1 | 2.9 | 0.4 | -1.4 | 4.8 | -3.6 | 0.9 | 1.6 | -1.9 | 1.9 | -1.9 | 4.7 |
| 2016 | -2.0 | 0.6 | 0.8 | 1.2 | 0.6 | 3.1 | 3.4 | 1.7 | 0.7 | 0.9 | -1.6 | 3.8 |
| 2015 | 2.5 | 3.0 | -1.9 | 3.2 | -0.5 | -6.1 | 2.8 | -6.7 | -2.7 | 4.7 | 0.4 | -3.5 |
| 2014 | -3.0 | 4.7 | -2.7 | 3.0 | 0.1 | -1.0 | -0.3 | 1.3 | -2.8 | -1.0 | 2.0 | -2.2 |
| 2013 | 6.5 | 1.2 | 1.4 | 0.4 | 1.6 | -5.0 | 6.3 | -3.1 | 0.6 | 4.2 | -1.8 | 1.1 |
| 2012 | 5.0 | 3.3 | -1.3 | 0.0 | -7.9 | 4.9 | 1.2 | 0.8 | 1.1 | 0.8 | 0.9 | 0.3 |
| 2011 | -1.0 | 2.1 | -1.0 | 3.0 | -2.1 | -0.3 | -2.2 | -7.4 | -4.7 | 7.6 | -0.7 | -1.8 |
| 2010 | -4.0 | 3.2 | 6.5 | -2.0 | -6.9 | -5.2 | 7.1 | -1.2 | 6.1 | 2.4 | -2.7 | 7.2 |
| 2009 | -9.1 | -7.9 | 2.6 | 8.2 | 3.5 | -3.2 | 8.2 | 6.4 | 4.6 | -1.9 | 2.8 | 4.2 |
| Avg | 0.3 | 0.9 | -0.8 | 2.3 | -0.0 | -1.4 | 2.4 | -0.7 | -0.5 | 0.8 | 1.1 | 1.1 |
Values in %. Current and first-listed months are partial (greyed).
returnsview.com
ISF-L seasonality — average by calendar month
iShares Core FTSE 100 UCITS ETF has monthly history back to 2009. Its strongest month by median is April — positive in 15 of 18 years, median +2.5%, and higher in 8 of the last 9. June is the soft spot, down in 13 of 18 with a median of -1.1%. Across its full record it has closed 61% of months higher, swings ±3.6% in an average month and has fallen 37.3% peak to trough.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg | +0.3% | +0.9% | -0.8% | +2.3% | -0.0% | -1.4% | +2.4% | -0.7% | -0.5% | +0.8% | +1.1% | +1.1% |
| Win rate | 50%/18 | 83%/18 | 50%/18 | 83%/18 | 67%/18 | 28%/18 | 83%/18 | 56%/18 | 47%/17 | 59%/17 | 59%/17 | 65%/17 |
Win rate = share of positive months / sample size.
ISF-L risk & extremes
ISF-L drawdown & rolling returns
Percent below the all-time high at each month-end — how far underwater the asset was.
Related stocks
Frequently asked questions
What was iShares Core FTSE 100 UCITS ETF's best month?+
iShares Core FTSE 100 UCITS ETF's strongest completed month on record is November 2020, at +12.42%.
What was iShares Core FTSE 100 UCITS ETF's worst month?+
Its weakest completed month on record is March 2020, at -14.64%.
Is iShares Core FTSE 100 UCITS ETF up this year?+
iShares Core FTSE 100 UCITS ETF is up 8.18% year to date, measured from its last close before 1 January.
What is iShares Core FTSE 100 UCITS ETF's 1-year return?+
+15.44% over the past twelve months, comparing the latest close with the most recent close on or before the same date a year earlier.
What is iShares Core FTSE 100 UCITS ETF's biggest drawdown?+
The deepest peak-to-trough fall on record is 37.3%, measured on month-end closes since 2009.
Which calendar month is historically best for iShares Core FTSE 100 UCITS ETF?+
July has the highest average return across every completed July since 2009. An average is not a forecast.
About iShares Core FTSE 100 UCITS ETF
iShares Core FTSE 100 UCITS ETF is an uk business. Tracked here from its first session onward — every monthly, quarterly and weekly return on record since 2009, with no gaps filled in and nothing smoothed. And the long game: $100 at its first close here (2009) would be about $256 today.
Did you know?
- Its best month on record was November 2020 at +12.42%; its worst, March 2020 at -14.64%.
- It has closed February in the green 15 out of 18 times — past performance, future shrug.
Trivia for entertainment — the numbers come from our price data; the jokes don't.