SPDR Bloomberg 15+ Year Gilt UCITS (GLTL.L): Rolling Returns

Simulation Settings
Category:
Period: February 1970 - March 2026 (~56 years)
Initial Amount: 1£
Currency: GBP
Inflation: UK
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When holding the SPDR Bloomberg 15+ Year Gilt UCITS (GLTL.L) ETF, how long should you stay invested to have high probability to achieve a positive return?

Over the selected period (~56 years), the longest duration with a negative return was 172 months (from December 2011 to March 2026). This negative serie is not closed yet.

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.

SPDR BLOOMBERG 15+ YEAR GILT UCITS (GLTL.L) ETF
Previous vs Next Returns - 10 Years annualized
Time Period: 1 April 1996 - 31 March 2026 (30 Years)
Time Period: 1 February 1970 - 31 March 2026 (~56 years)
30 Years
(1996/04 - 2026/03)
All Data
(1970/02 - 2026/03)

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As of Mar 31, 2026, the annualized return of the previous 10 years has been -3.28%.

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.

SPDR BLOOMBERG 15+ YEAR GILT UCITS (GLTL.L) ETF
Annualized Rolling Returns
Annualized Rolling Returns - Inflation Adjusted
Time Period: 1 April 1996 - 31 March 2026 (30 Years)
Time Period: 1 February 1970 - 31 March 2026 (~56 years)
30 Years
(1996/04 - 2026/03)
All Data
(1970/02 - 2026/03)
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.

SPDR BLOOMBERG 15+ YEAR GILT UCITS (GLTL.L) ETF
Rolling Returns Chart
Rolling Returns Chart - Inflation Adjusted
Time Period: 1 February 1970 - 31 March 2026 (~56 years)
Over Time
Histogram
UK Inflation Adjusted:

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Swipe left to see all data
Worst Median Best Negative Periods
-40.25%
Jan 2022 - Dec 2022
+8.59% +64.50%
Nov 1981 - Oct 1982
21.12%
140 out of 663
-45.94%
Jan 2022 - Dec 2022
+3.74% +53.95%
Nov 1981 - Oct 1982
35.29%
234 out of 663
-27.63%
Nov 2021 - Oct 2023
+9.10% +42.82%
Jan 1976 - Dec 1977
12.44%
81 out of 651
-32.85%
Nov 2021 - Oct 2023
+4.45% +27.83%
Jan 1982 - Dec 1983
29.65%
193 out of 651
-20.89%
Nov 2020 - Oct 2023
+8.11% +40.69%
Jan 1975 - Dec 1977
10.80%
69 out of 639
-25.77%
Nov 2020 - Oct 2023
+4.34% +20.92%
Jan 1982 - Dec 1984
21.13%
135 out of 639
-16.14%
May 2020 - Apr 2024
+8.83% +30.27%
Jan 1975 - Dec 1978
10.05%
63 out of 627
-20.38%
May 2020 - Apr 2024
+4.89% +18.13%
Feb 1995 - Jan 1999
16.91%
106 out of 627
-13.68%
Jun 2020 - May 2025
+9.12% +26.67%
Jan 1975 - Dec 1979
8.29%
51 out of 615
-17.79%
Jun 2020 - May 2025
+4.84% +14.25%
Dec 1994 - Nov 1999
16.42%
101 out of 615
-10.61%
Apr 2020 - Mar 2026
+9.34% +24.79%
Jan 1975 - Dec 1980
7.63%
46 out of 603
-14.32%
Apr 2020 - Mar 2026
+4.81% +15.00%
Feb 1993 - Jan 1999
16.75%
101 out of 603
-7.08%
Apr 2019 - Mar 2026
+9.33% +23.70%
Jan 1976 - Dec 1982
7.45%
44 out of 591
-10.59%
Apr 2019 - Mar 2026
+4.98% +13.51%
Jan 1992 - Dec 1998
16.41%
97 out of 591
-5.97%
Sep 2017 - Aug 2025
+9.47% +25.23%
Jan 1975 - Dec 1982
7.43%
43 out of 579
-9.37%
Sep 2017 - Aug 2025
+5.44% +12.49%
Jan 1991 - Dec 1998
16.06%
93 out of 579
-6.08%
Sep 2016 - Aug 2025
+9.93% +24.36%
Jan 1975 - Dec 1983
6.17%
35 out of 567
-9.39%
Sep 2016 - Aug 2025
+5.59% +12.06%
May 1990 - Apr 1999
15.34%
87 out of 567
-3.28%
Apr 2016 - Mar 2026
+9.86% +23.19%
Jan 1975 - Dec 1984
5.59%
31 out of 555
-6.47%
Apr 2016 - Mar 2026
+5.78% +11.33%
May 1990 - Apr 2000
14.59%
81 out of 555
-2.76%
Feb 2015 - Jan 2026
+9.86% +20.51%
Jan 1975 - Dec 1985
5.16%
28 out of 543
-5.72%
Feb 2015 - Jan 2026
+5.63% +10.39%
Nov 1990 - Oct 2001
13.08%
71 out of 543
-0.83%
May 2013 - Apr 2025
+9.82% +19.77%
Jan 1975 - Dec 1986
4.14%
22 out of 531
-3.60%
May 2013 - Apr 2025
+5.40% +9.88%
Oct 1990 - Sep 2002
9.42%
50 out of 531
-1.02%
Sep 2012 - Aug 2025
+10.14% +19.29%
Jan 1975 - Dec 1987
2.89%
15 out of 519
-3.81%
Sep 2012 - Aug 2025
+5.53% +9.62%
Feb 1986 - Jan 1999
8.48%
44 out of 519
-0.19%
Feb 2012 - Jan 2026
+10.28% +19.01%
Jan 1975 - Dec 1988
0.59%
3 out of 507
-2.92%
Feb 2012 - Jan 2026
+5.68% +8.89%
Feb 1985 - Jan 1999
7.89%
40 out of 507
+0.62%
Sep 2010 - Aug 2025
+10.06% +17.99%
Jan 1975 - Dec 1989
0.00%
0 out of 495
-2.28%
Sep 2010 - Aug 2025
+5.80% +8.72%
May 1990 - Apr 2005
7.07%
35 out of 495
+1.11%
Sep 2009 - Aug 2025
+9.79% +16.90%
Jan 1975 - Dec 1990
0.00%
0 out of 483
-1.82%
Sep 2009 - Aug 2025
+5.91% +8.89%
Jan 1982 - Dec 1997
7.04%
34 out of 483
+1.35%
Apr 2009 - Mar 2026
+9.68% +16.68%
Jan 1975 - Dec 1991
0.00%
0 out of 471
-1.53%
Apr 2009 - Mar 2026
+5.82% +10.03%
Jan 1982 - Dec 1998
7.43%
35 out of 471
+1.92%
Apr 2008 - Mar 2026
+9.54% +16.48%
Jan 1976 - Dec 1993
0.00%
0 out of 459
-0.98%
Sep 2007 - Aug 2025
+6.10% +9.61%
Nov 1981 - Oct 1999
7.63%
35 out of 459
+1.91%
Sep 2006 - Aug 2025
+9.48% +17.45%
Jan 1975 - Dec 1993
0.00%
0 out of 447
-1.00%
Sep 2006 - Aug 2025
+6.19% +9.31%
Jan 1982 - Dec 2000
6.04%
27 out of 447
+1.92%
Sep 2005 - Aug 2025
+9.45% +15.75%
Jan 1975 - Dec 1994
0.00%
0 out of 435
-0.96%
Sep 2005 - Aug 2025
+6.26% +9.12%
Nov 1981 - Oct 2001
4.37%
19 out of 435
+2.75%
Apr 2001 - Mar 2026
+9.25% +15.80%
Jan 1975 - Dec 1999
0.00%
0 out of 375
+0.11%
Apr 2001 - Mar 2026
+6.23% +8.38%
Jan 1975 - Dec 1999
0.00%
0 out of 375
+4.64%
Feb 1996 - Jan 2026
+9.64% +14.00%
Jan 1975 - Dec 2004
0.00%
0 out of 315
+2.15%
Feb 1996 - Jan 2026
+6.09% +7.65%
Jan 1975 - Dec 2004
0.00%
0 out of 315
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