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

Simulation Settings
Category:
Period: January 1950 - April 2026 (~76 years)
Initial Amount: 1£
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 May 1996 - 30 April 2026 (30 Years)
Time Period: 1 January 1950 - 30 April 2026 (~76 years)
30 Years
(1996/05 - 2026/04)
All Data
(1950/01 - 2026/04)

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As of Apr 30, 2026, the annualized return of the previous 10 years has been -2.24%.

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 May 1996 - 30 April 2026 (30 Years)
Time Period: 1 January 1950 - 30 April 2026 (~76 years)
30 Years
(1996/05 - 2026/04)
All Data
(1950/01 - 2026/04)
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 - 30 April 2026 (~76 years)
Over Time
Histogram
UK Inflation Adjusted:

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Worst Median Best Negative Periods
-34.22%
Nov 2021 - Oct 2022
+5.25% +72.78%
Apr 1985 - Mar 1986
26.85%
243 out of 905
-40.77%
Nov 2021 - Oct 2022
+0.73% +65.81%
Apr 1985 - Mar 1986
46.41%
420 out of 905
-23.43%
Nov 2021 - Oct 2023
+5.72% +52.93%
Jul 1984 - Jun 1986
19.71%
176 out of 893
-28.96%
Nov 2021 - Oct 2023
+1.90% +46.05%
Jul 1984 - Jun 1986
39.53%
353 out of 893
-17.87%
Nov 2020 - Oct 2023
+6.51% +33.01%
Jun 1984 - May 1987
13.39%
118 out of 881
-22.94%
Nov 2020 - Oct 2023
+2.33% +27.13%
Jun 1984 - May 1987
37.23%
328 out of 881
-13.61%
May 2020 - Apr 2024
+6.50% +31.62%
Jul 1982 - Jun 1986
9.90%
86 out of 869
-17.97%
May 2020 - Apr 2024
+2.49% +25.89%
Jul 1982 - Jun 1986
40.16%
349 out of 869
-10.71%
Aug 2020 - Jul 2025
+6.82% +29.38%
Sep 1981 - Aug 1986
8.05%
69 out of 857
-14.93%
Aug 2020 - Jul 2025
+2.14% +22.97%
Sep 1981 - Aug 1986
38.97%
334 out of 857
-8.54%
May 2020 - Apr 2026
+7.10% +22.98%
Sep 1981 - Aug 1987
5.92%
50 out of 845
-12.45%
May 2020 - Apr 2026
+2.10% +17.04%
Sep 1981 - Aug 1987
40.24%
340 out of 845
-5.07%
Nov 2016 - Oct 2023
+7.26% +21.86%
Oct 1981 - Sep 1988
5.28%
44 out of 833
-10.13%
Apr 1973 - Mar 1980
+2.38% +16.30%
Jul 1982 - Jun 1989
39.38%
328 out of 833
-3.93%
Jul 2016 - Jun 2024
+7.19% +21.44%
Oct 1981 - Sep 1989
5.36%
44 out of 821
-11.02%
Oct 1973 - Sep 1981
+2.93% +15.68%
Oct 1981 - Sep 1989
36.78%
302 out of 821
-3.69%
Aug 2016 - Jul 2025
+7.56% +21.48%
Jul 1984 - Jun 1993
4.20%
34 out of 809
-10.14%
Oct 1972 - Sep 1981
+3.21% +15.77%
Jul 1984 - Jun 1993
34.98%
283 out of 809
-2.82%
Feb 2015 - Jan 2025
+7.42% +20.48%
Oct 1981 - Sep 1991
3.89%
31 out of 797
-9.34%
Oct 1971 - Sep 1981
+3.39% +14.20%
Oct 1981 - Sep 1991
36.89%
294 out of 797
-2.32%
Feb 2015 - Jan 2026
+7.22% +20.35%
Oct 1981 - Sep 1992
3.69%
29 out of 785
-7.89%
Oct 1970 - Sep 1981
+3.44% +14.41%
Jul 1982 - Jun 1993
36.69%
288 out of 785
-1.09%
Jun 2012 - May 2024
+7.46% +20.59%
Oct 1981 - Sep 1993
2.85%
22 out of 773
-7.62%
Sep 1969 - Aug 1981
+3.33% +14.76%
Oct 1981 - Sep 1993
38.03%
294 out of 773
-1.10%
Aug 2012 - Jul 2025
+7.67% +18.14%
Sep 1981 - Aug 1994
1.97%
15 out of 761
-7.97%
Oct 1968 - Sep 1981
+3.25% +12.97%
Jul 1982 - Jun 1995
38.24%
291 out of 761
-0.27%
Feb 2012 - Jan 2026
+7.97% +18.36%
Oct 1981 - Sep 1995
0.53%
4 out of 749
-7.51%
Oct 1967 - Sep 1981
+3.60% +13.07%
Oct 1981 - Sep 1995
38.45%
288 out of 749
+0.66%
Sep 2010 - Aug 2025
+7.83% +17.22%
Oct 1981 - Sep 1996
0.00%
0 out of 737
-7.11%
Oct 1966 - Sep 1981
+3.71% +12.16%
Oct 1981 - Sep 1996
37.45%
276 out of 737
+0.40%
Jan 2009 - Dec 2024
+7.91% +16.96%
Oct 1981 - Sep 1997
0.00%
0 out of 725
-6.91%
Oct 1965 - Sep 1981
+3.54% +12.11%
Jul 1982 - Jun 1998
38.34%
278 out of 725
+0.60%
Jan 2009 - Dec 2025
+8.06% +17.30%
Oct 1981 - Sep 1998
0.00%
0 out of 713
-6.54%
Oct 1964 - Sep 1981
+3.72% +12.61%
Oct 1981 - Sep 1998
36.33%
259 out of 713
+2.07%
Apr 2008 - Mar 2026
+8.16% +15.78%
Oct 1981 - Sep 1999
0.00%
0 out of 701
-6.21%
Oct 1963 - Sep 1981
+3.91% +11.33%
Oct 1981 - Sep 1999
36.38%
255 out of 701
+1.89%
Jan 1951 - Dec 1969
+8.54% +15.41%
Oct 1981 - Sep 2000
0.00%
0 out of 689
-5.85%
Oct 1962 - Sep 1981
+3.97% +11.72%
Jun 1984 - May 2003
35.70%
246 out of 689
+1.75%
Jan 1950 - Dec 1969
+8.75% +15.37%
Oct 1981 - Sep 2001
0.00%
0 out of 677
-5.42%
Oct 1961 - Sep 1981
+3.83% +11.24%
Oct 1981 - Sep 2001
35.45%
240 out of 677
+2.94%
Jan 1950 - Dec 1974
+9.19% +13.92%
Oct 1981 - Sep 2006
0.00%
0 out of 617
-4.12%
Oct 1956 - Sep 1981
+3.32% +10.28%
Oct 1981 - Sep 2006
28.36%
175 out of 617
+3.20%
Mar 1950 - Feb 1980
+9.45% +13.49%
Oct 1981 - Sep 2011
0.00%
0 out of 557
-3.75%
Sep 1951 - Aug 1981
+3.46% +9.88%
Oct 1981 - Sep 2011
17.95%
100 out of 557
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