CSP1 vs CNX1: which ETF won each year?

Yearly returns side by side, one winner per year — dividends included, priced as you'd actually buy them.

Every figure here is in pounds — what you'd actually pocket buying on the London Stock Exchange. Fund fact sheets usually headline returns in US dollars, which can look very different in years when the pound moves against the dollar. Here's the full story, year by year.

CSP1 tracks the S&P 500 IndexCNX1 tracks the Nasdaq-100 Index

What did the last 10 years do to £10,000?

You invest £10,000 at the start of the window and touch nothing — dividends reinvested, the running year not counted.

CSP1 turned it into
£42,477
+15.56% per year on average · 2016–2025
CNX1 turned it into
£63,451
+20.29% per year on average · 2016–2025
Difference
−£20,973
CNX1 made more of the same money

CSP1 vs CNX1, year by year

Calendar-year total returns (dividends included) side by side, and who took the crown each year. A dash means the fund did not exist yet.

Years compared
17
where both funds were trading
CSP1 won
3
years
CNX1 won
14
years
YearCSP1CNX1Winner
2026 (so far)+14.27%+21.89%CNX1
2025+9.37%+11.83%CNX1
2024+27.35%+28.51%CNX1
2023+19.79%+47.71%CNX1
2022-9.05%-25.53%CSP1
2021+31.07%+29.50%CSP1
2020+13.65%+43.24%CNX1
2019+26.42%+33.63%CNX1
2018+0.01%+4.62%CNX1
2017+10.83%+20.13%CNX1
2016+34.10%+28.85%CSP1
2015+5.78%+14.71%CNX1
2014+22.03%+28.19%CNX1
2013+31.40%+36.05%CNX1
2012+7.14%+9.20%CNX1
2011+1.73%+3.56%CNX1
2010-26.08%-20.33%CNX1

CSP1 vs CNX1 in plain words

CSP1 tracks the S&P 500 Index while CNX1 follows the Nasdaq-100 Index, so they own different slices of the market and their years can look very different. CSP1 charges 0.07% a year in running costs and CNX1 charges 0.30% — CSP1 is the cheaper fund to hold.

Both are accumulating funds: dividends are reinvested inside the fund and show up as a higher share price, never as a payout. Across the 17 calendar years both funds were trading, CSP1 finished the year ahead 3 times and CNX1 14 times. £10,000 invested at the start of 2016 was worth £42,477 in CSP1 versus £63,451 in CNX1 by the end of 2025, dividends reinvested.

CSPX is the London (USD) listing and SXR8 the Xetra (EUR) line of the same fund, ISIN IE00B5BMR087 — CSP1 is its GBP line on the London Stock Exchange.

CNDX is the London (USD) listing and SXRV the Xetra (EUR) line of the same fund, ISIN IE00B53SZB19 — CNX1 is its GBP line on the London Stock Exchange.

Fund facts: CSP1 vs CNX1

FactCSP1CNX1
FundiShares Core S&P 500 UCITS ETF USD (Acc)iShares Nasdaq 100 UCITS ETF (Acc)
TracksS&P 500 IndexNasdaq-100 Index
Yearly cost (TER)0.07%0.30%
DividendsAccumulating — dividends reinvestedAccumulating — dividends reinvested
Launched19 May 201026 Jan 2010
ISINIE00B5BMR087IE00B53SZB19
£10,000 investedWhat £10,000 in CSP1 becameWhat £10,000 in CNX1 became

How bumpy the ride was: CSP1 vs CNX1

These head-to-head figures use only the 4,130 trading days both funds were listed: 19 May 2010 to 7 Oct 2026, roughly 16.4 years.

CNX1 swung more than CSP1: annualised volatility of 17.8% for CSP1 against 20.6% for CNX1, with CSP1 moving 1% or more on 22.0% of trading days and CNX1 on 31.8%. Both had their worst day on 15 Sept 2010: CSP1 closed -35.99% and CNX1 -35.97%.

CSP1 had the deeper drawdown: it fell -38.13% from its peak on 9 Aug 2010 to a low on 22 Aug 2011, then closed back above the old peak on 14 May 2013, 20 months after the low; CNX1 fell -35.97% from its peak on 14 Sept 2010 to a low on 15 Sept 2010, then closed back above the old peak on 7 May 2013, 31 months after the low.

Day to day the two usually move together: the correlation of their daily returns is 0.90, and they closed in opposite directions on 11.9% of the 4,129 days measured. The widest single-day gap came on 29 Dec 2010, when CSP1 moved +9.33% and CNX1 0.00%.

MeasureCSP1CNX1
Annualised volatility17.8%20.6%
Worst day-35.99% on 15 Sept 2010-35.97% on 15 Sept 2010
Best day+9.33% on 29 Dec 2010+6.26% on 2 Feb 2023
Days moving 1% or more22.0% of days31.8% of days
Deepest drawdown-38.13%-35.97%
Peak to trough9 Aug 2010 → 22 Aug 201114 Sept 2010 → 15 Sept 2010
Back above the old peak14 May 2013 · 20 months7 May 2013 · 31 months

Years CSP1 and CNX1 parted ways

In 9 of the 16 completed calendar years both funds were trading, the two returns ended more than 5 points apart. The widest split was 2020: CSP1 returned +13.65% and CNX1 +43.24%, a gap of 29.6 points. They rose together in 14 years and fell together in 2 years.

YearCSP1CNX1Gap (CSP1 − CNX1)
2023+19.79%+47.71%-27.9 pts
2022-9.05%-25.53%+16.5 pts
2020+13.65%+43.24%-29.6 pts
2019+26.42%+33.63%-7.2 pts
2017+10.83%+20.13%-9.3 pts
2016+34.10%+28.85%+5.3 pts
2015+5.78%+14.71%-8.9 pts
2014+22.03%+28.19%-6.2 pts
2010-26.08%-20.33%-5.8 pts

How often CSP1 beat CNX1 over any 12 months

Across the 185 rolling 12-month windows since May 2010, measured month-end to month-end, CSP1 finished ahead in 22.7% of them (42) and CNX1 in 77.3% (143).

12-month windows
185
month-end to month-end, overlapping
CSP1 ahead
22.7%
42 of 185 windows
CNX1 ahead
77.3%
143 of 185 windows

£200 a month into each, 2011–2025

Putting £200 into each fund at the start of every month from January 2011 to December 2025 (180 payments, £36,000 in total) would have grown to £125,954 in CSP1 and £193,909 in CNX1, leaving CNX1 £67,955 ahead.

OutcomeCSP1CNX1
Paid in£36,000£36,000
Value at the end of 2025£125,954£193,909
Gain on the money paid in+£89,954+£157,909
Gain in %+249.87%+438.64%

Each payment rides the return of the month it lands in, dividends reinvested. Only calendar years with all twelve months of data for both funds count, so the plan may start later than the shared history.

Frequently asked

Is CSP1 or CNX1 better?

Across the 17 calendar years both funds were trading, CSP1 finished the year ahead 3 times and CNX1 14 times. £10,000 invested at the start of 2016 was worth £42,477 in CSP1 versus £63,451 in CNX1 by the end of 2025, dividends reinvested. Past returns don't promise future ones — but this is what actually happened.

What is the difference between CSP1 and CNX1?

CSP1 tracks the S&P 500 Index while CNX1 follows the Nasdaq-100 Index, so they own different slices of the market and their years can look very different. CSP1 charges 0.07% a year in running costs and CNX1 charges 0.30% — CSP1 is the cheaper fund to hold. Both are accumulating funds: dividends are reinvested inside the fund and show up as a higher share price, never as a payout.

Which is more volatile, CSP1 or CNX1?

CNX1 swung more than CSP1: annualised volatility of 17.8% for CSP1 against 20.6% for CNX1, with CSP1 moving 1% or more on 22.0% of trading days and CNX1 on 31.8%. Both had their worst day on 15 Sept 2010: CSP1 closed -35.99% and CNX1 -35.97%.

Which had the deeper drawdown, CSP1 or CNX1?

CSP1 had the deeper drawdown: it fell -38.13% from its peak on 9 Aug 2010 to a low on 22 Aug 2011, then closed back above the old peak on 14 May 2013, 20 months after the low; CNX1 fell -35.97% from its peak on 14 Sept 2010 to a low on 15 Sept 2010, then closed back above the old peak on 7 May 2013, 31 months after the low.

How often did CSP1 beat CNX1 over a 12-month period?

Across the 185 rolling 12-month windows since May 2010, measured month-end to month-end, CSP1 finished ahead in 22.7% of them (42) and CNX1 in 77.3% (143).

What would £10,000 in CSP1 have become?

£10,000 invested in CSP1 at the start of 2016 grew to £42,477 by the end of 2025, with dividends reinvested — an average of 15.6% per year.

Related comparisons

More head-to-heads featuring CSP1 or CNX1.

Source: Yahoo Finance daily adjusted closes for the GBP trading lines on the London Stock Exchange, dividends reinvested. Prices through · refreshed 7 Oct 2026, 08:49 UTC. How every number is calculated.