iShares $ Treasury Bond 20+yr UCITS GBP Hedged (Dist) (IDTG.L): Rolling Returns

Simulation Settings
Category:
Period: January 1950 - October 2025 (~76 years)
Initial Amount: 1ÂŁ
Currency: GBP
Inflation: UK
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When holding the iShares $ Treasury Bond 20+yr UCITS GBP Hedged (Dist) (IDTG.L) ETF, how long should you stay invested to have high probability to achieve a positive return?

Over the selected period (~76 years), the longest duration with a negative return was 178 months (from January 2009 to October 2023).

This indicates that, within the same timeframe, any rolling period of 179 months or more has consistently resulted in a positive return.

Understanding this metric is crucial as it highlights the importance of a safe investment horizon. Knowing the minimum duration required to likely see positive returns helps investors set realistic expectations and reinforces the strategy of staying invested through market cycles. This approach can mitigate the emotional reactions to short-term market fluctuations and enhance the likelihood of achieving financial goals.

Previous vs subsequent Returns

Is there a correlation between past and future returns over all 10-year rolling periods?

The following chart illustrates the relationship between past returns (x-axis) and subsequent returns (y-axis).

Data points are aggregated to show occurrences, and you can zoom in by clicking or drawing over the desired area.

ISHARES $ TREASURY BOND 20+YR UCITS GBP HEDGED (DIST) (IDTG.L) ETF
Previous vs Next Returns - 10 Years annualized
Time Period: 1 November 1995 - 31 October 2025 (30 Years)
Time Period: 1 January 1950 - 31 October 2025 (~76 years)
30 Years
(1995/11 - 2025/10)
All Data
(1950/01 - 2025/10)

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As of Oct 31, 2025, the annualized return of the previous 10 years has been -1.34%.

Rolling Returns

A rolling return is a measure of investment performance that calculates the return of an investment over a set period of time, with the starting date rolling forward. This approach can provide a more accurate representation of the investment's historical performance and helps investors to evaluate the investment's consistency over time.

ISHARES $ TREASURY BOND 20+YR UCITS GBP HEDGED (DIST) (IDTG.L) ETF
Annualized Rolling Returns
Annualized Rolling Returns - Inflation Adjusted
Time Period: 1 November 1995 - 31 October 2025 (30 Years)
Time Period: 1 January 1950 - 31 October 2025 (~76 years)
30 Years
(1995/11 - 2025/10)
All Data
(1950/01 - 2025/10)
UK Inflation Adjusted:

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Rolling Period Analysis

By selecting the 'Rolling Period', the chart and data will update. To study a different date range, change the simulation settings.

ISHARES $ TREASURY BOND 20+YR UCITS GBP HEDGED (DIST) (IDTG.L) ETF
Rolling Returns Chart
Rolling Returns Chart - Inflation Adjusted
Time Period: 1 January 1950 - 31 October 2025 (~76 years)
Over Time
Histogram
UK Inflation Adjusted:

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Worst Median Best Negative Periods
-34.22%
Nov 2021 - Oct 2022
+5.27% +72.78%
Apr 1985 - Mar 1986
26.81%
241 out of 899
-40.77%
Nov 2021 - Oct 2022
+0.81% +65.81%
Apr 1985 - Mar 1986
46.27%
416 out of 899
-23.43%
Nov 2021 - Oct 2023
+5.78% +52.93%
Jul 1984 - Jun 1986
19.50%
173 out of 887
-28.96%
Nov 2021 - Oct 2023
+1.95% +46.05%
Jul 1984 - Jun 1986
39.12%
347 out of 887
-17.87%
Nov 2020 - Oct 2023
+6.54% +33.01%
Jun 1984 - May 1987
12.80%
112 out of 875
-22.94%
Nov 2020 - Oct 2023
+2.40% +27.13%
Jun 1984 - May 1987
36.80%
322 out of 875
-13.61%
May 2020 - Apr 2024
+6.53% +31.62%
Jul 1982 - Jun 1986
9.27%
80 out of 863
-17.97%
May 2020 - Apr 2024
+2.51% +25.89%
Jul 1982 - Jun 1986
39.75%
343 out of 863
-10.71%
Aug 2020 - Jul 2025
+6.90% +29.38%
Sep 1981 - Aug 1986
7.40%
63 out of 851
-14.93%
Aug 2020 - Jul 2025
+2.19% +22.97%
Sep 1981 - Aug 1986
38.54%
328 out of 851
-6.76%
Sep 2019 - Aug 2025
+7.17% +22.98%
Sep 1981 - Aug 1987
5.24%
44 out of 839
-10.59%
Sep 2019 - Aug 2025
+2.13% +17.04%
Sep 1981 - Aug 1987
39.81%
334 out of 839
-5.07%
Nov 2016 - Oct 2023
+7.28% +21.86%
Oct 1981 - Sep 1988
4.59%
38 out of 827
-10.13%
Apr 1973 - Mar 1980
+2.54% +16.30%
Jul 1982 - Jun 1989
38.94%
322 out of 827
-3.93%
Jul 2016 - Jun 2024
+7.22% +21.44%
Oct 1981 - Sep 1989
4.66%
38 out of 815
-11.02%
Oct 1973 - Sep 1981
+3.15% +15.68%
Oct 1981 - Sep 1989
36.32%
296 out of 815
-3.69%
Aug 2016 - Jul 2025
+7.63% +21.48%
Jul 1984 - Jun 1993
3.49%
28 out of 803
-10.14%
Oct 1972 - Sep 1981
+3.40% +15.77%
Jul 1984 - Jun 1993
34.50%
277 out of 803
-2.82%
Feb 2015 - Jan 2025
+7.48% +20.48%
Oct 1981 - Sep 1991
3.16%
25 out of 791
-9.34%
Oct 1971 - Sep 1981
+3.53% +14.20%
Oct 1981 - Sep 1991
36.41%
288 out of 791
-1.77%
Nov 2012 - Oct 2023
+7.24% +20.35%
Oct 1981 - Sep 1992
2.95%
23 out of 779
-7.89%
Oct 1970 - Sep 1981
+3.51% +14.41%
Jul 1982 - Jun 1993
36.20%
282 out of 779
-1.09%
Jun 2012 - May 2024
+7.50% +20.59%
Oct 1981 - Sep 1993
2.74%
21 out of 767
-7.62%
Sep 1969 - Aug 1981
+3.43% +14.76%
Oct 1981 - Sep 1993
37.55%
288 out of 767
-1.10%
Aug 2012 - Jul 2025
+7.69% +18.14%
Sep 1981 - Aug 1994
1.19%
9 out of 755
-7.97%
Oct 1968 - Sep 1981
+3.44% +12.97%
Jul 1982 - Jun 1995
37.75%
285 out of 755
-0.10%
Oct 2011 - Sep 2025
+7.97% +18.36%
Oct 1981 - Sep 1995
0.13%
1 out of 743
-7.51%
Oct 1967 - Sep 1981
+3.64% +13.07%
Oct 1981 - Sep 1995
37.95%
282 out of 743
+0.66%
Sep 2010 - Aug 2025
+7.92% +17.22%
Oct 1981 - Sep 1996
0.00%
0 out of 731
-7.11%
Oct 1966 - Sep 1981
+3.77% +12.16%
Oct 1981 - Sep 1996
36.94%
270 out of 731
+0.40%
Jan 2009 - Dec 2024
+7.99% +16.96%
Oct 1981 - Sep 1997
0.00%
0 out of 719
-6.91%
Oct 1965 - Sep 1981
+3.61% +12.11%
Jul 1982 - Jun 1998
37.83%
272 out of 719
+1.97%
Sep 2008 - Aug 2025
+8.10% +17.30%
Oct 1981 - Sep 1998
0.00%
0 out of 707
-6.54%
Oct 1964 - Sep 1981
+3.80% +12.61%
Oct 1981 - Sep 1998
35.79%
253 out of 707
+2.10%
Jun 1952 - May 1970
+8.20% +15.78%
Oct 1981 - Sep 1999
0.00%
0 out of 695
-6.21%
Oct 1963 - Sep 1981
+3.98% +11.33%
Oct 1981 - Sep 1999
35.83%
249 out of 695
+1.89%
Jan 1951 - Dec 1969
+8.59% +15.41%
Oct 1981 - Sep 2000
0.00%
0 out of 683
-5.85%
Oct 1962 - Sep 1981
+4.15% +11.72%
Jun 1984 - May 2003
35.14%
240 out of 683
+1.75%
Jan 1950 - Dec 1969
+8.83% +15.37%
Oct 1981 - Sep 2001
0.00%
0 out of 671
-5.42%
Oct 1961 - Sep 1981
+3.98% +11.24%
Oct 1981 - Sep 2001
35.02%
235 out of 671
+2.94%
Jan 1950 - Dec 1974
+9.29% +13.92%
Oct 1981 - Sep 2006
0.00%
0 out of 611
-4.12%
Oct 1956 - Sep 1981
+3.36% +10.28%
Oct 1981 - Sep 2006
28.64%
175 out of 611
+3.20%
Mar 1950 - Feb 1980
+9.51% +13.49%
Oct 1981 - Sep 2011
0.00%
0 out of 551
-3.75%
Sep 1951 - Aug 1981
+3.49% +9.88%
Oct 1981 - Sep 2011
18.15%
100 out of 551
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