When holding the David Swensen Yale Endowment To EUR Bond Hedged Portfolio, how long should you stay invested to have high probability to achieve a positive return?

Over the selected period (~42 years), the longest duration with a negative return was 110 months (from January 2000 to February 2009).

This indicates that, within the same timeframe, any rolling period of 111 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.

DAVID SWENSEN YALE ENDOWMENT TO EUR BOND HEDGED PORTFOLIO
Previous vs Next Returns - 10 Years annualized
Time Period: 1 July 1996 - 30 June 2026 (30 Years)
Time Period: 1 January 1985 - 30 June 2026 (~42 years)
30 Years
(1996/07 - 2026/06)
All Data
(1985/01 - 2026/06)

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As of Jun 30, 2026, the annualized return of the previous 10 years has been 7.66%.

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.

DAVID SWENSEN YALE ENDOWMENT TO EUR BOND HEDGED PORTFOLIO
Annualized Rolling Returns
Annualized Rolling Returns - Inflation Adjusted
Time Period: 1 July 1996 - 30 June 2026 (30 Years)
Time Period: 1 January 1985 - 30 June 2026 (~42 years)
30 Years
(1996/07 - 2026/06)
All Data
(1985/01 - 2026/06)
Eurozone 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.

DAVID SWENSEN YALE ENDOWMENT TO EUR BOND HEDGED PORTFOLIO
Rolling Returns Chart
Rolling Returns Chart - Inflation Adjusted
Time Period: 1 January 1985 - 30 June 2026 (~42 years)
Over Time
Histogram
Eurozone Inflation Adjusted:

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Swipe left to see all data
Worst Median Best Negative Periods
-27.77%
Mar 2008 - Feb 2009
+8.85% +46.11%
Sep 1992 - Aug 1993
21.15%
103 out of 487
-28.60%
Mar 2008 - Feb 2009
+6.95% +42.15%
Aug 1996 - Jul 1997
25.67%
125 out of 487
-19.20%
Mar 2007 - Feb 2009
+9.41% +28.28%
Mar 2009 - Feb 2011
12.21%
58 out of 475
-20.95%
Mar 2007 - Feb 2009
+7.21% +26.22%
Mar 2009 - Feb 2011
19.37%
92 out of 475
-11.66%
Mar 2006 - Feb 2009
+9.02% +26.25%
Nov 1990 - Oct 1993
9.72%
45 out of 463
-13.47%
Mar 2006 - Feb 2009
+6.53% +21.96%
Nov 1990 - Oct 1993
16.41%
76 out of 463
-4.12%
Mar 2005 - Feb 2009
+8.81% +20.83%
Sep 1996 - Aug 2000
4.43%
20 out of 451
-6.15%
Mar 2005 - Feb 2009
+6.54% +19.05%
Sep 1996 - Aug 2000
14.19%
64 out of 451
-2.24%
Mar 2004 - Feb 2009
+7.98% +19.64%
May 1995 - Apr 2000
0.68%
3 out of 439
-4.29%
Mar 2004 - Feb 2009
+5.50% +17.78%
May 1995 - Apr 2000
4.33%
19 out of 439
+1.16%
Mar 2003 - Feb 2009
+7.94% +17.89%
Apr 2009 - Mar 2015
0.00%
0 out of 427
-0.88%
Mar 2003 - Feb 2009
+5.49% +16.28%
Mar 2009 - Feb 2015
0.94%
4 out of 427
-1.69%
Mar 2002 - Feb 2009
+8.33% +18.33%
Oct 1990 - Sep 1997
0.72%
3 out of 415
-3.71%
Mar 2002 - Feb 2009
+6.24% +15.06%
Oct 1990 - Sep 1997
2.41%
10 out of 415
-0.96%
Mar 2001 - Feb 2009
+8.36% +17.24%
Sep 1992 - Aug 2000
1.24%
5 out of 403
-3.04%
Mar 2001 - Feb 2009
+6.47% +14.84%
Sep 1992 - Aug 2000
3.72%
15 out of 403
-0.56%
Apr 2000 - Mar 2009
+8.35% +16.81%
Jan 1991 - Dec 1999
0.51%
2 out of 391
-2.64%
Apr 2000 - Mar 2009
+6.33% +14.02%
Jan 1991 - Dec 1999
3.32%
13 out of 391
+1.67%
Apr 1999 - Mar 2009
+8.28% +17.07%
Nov 1990 - Oct 2000
0.00%
0 out of 379
-0.43%
Apr 1999 - Mar 2009
+6.29% +14.34%
Nov 1990 - Oct 2000
1.06%
4 out of 379
+1.82%
Apr 1998 - Mar 2009
+8.44% +14.53%
Dec 1990 - Nov 2001
0.00%
0 out of 367
-0.18%
Apr 1998 - Mar 2009
+6.43% +11.87%
Dec 1990 - Nov 2001
0.54%
2 out of 367
+3.46%
Mar 1997 - Feb 2009
+8.16% +14.47%
Jan 1988 - Dec 1999
0.00%
0 out of 355
+1.52%
Mar 1997 - Feb 2009
+6.19% +11.60%
Jan 1988 - Dec 1999
0.00%
0 out of 355
+4.06%
Sep 2000 - Aug 2013
+8.12% +14.15%
Dec 1987 - Nov 2000
0.00%
0 out of 343
+1.96%
Sep 2000 - Aug 2013
+6.18% +11.32%
Dec 1987 - Nov 2000
0.00%
0 out of 343
+4.78%
May 2000 - Apr 2014
+8.09% +12.98%
Jan 1988 - Dec 2001
0.00%
0 out of 331
+2.70%
May 2000 - Apr 2014
+5.99% +10.19%
Jan 1988 - Dec 2001
0.00%
0 out of 331
+4.79%
Mar 1994 - Feb 2009
+7.65% +12.48%
Nov 1985 - Oct 2000
0.00%
0 out of 319
+2.75%
Mar 1994 - Feb 2009
+5.83% +10.06%
Nov 1985 - Oct 2000
0.00%
0 out of 319
+5.55%
May 2000 - Apr 2016
+7.67% +12.13%
Nov 1990 - Oct 2006
0.00%
0 out of 307
+3.58%
Apr 1993 - Mar 2009
+5.79% +9.60%
Nov 1990 - Oct 2006
0.00%
0 out of 307
+5.43%
Sep 2000 - Aug 2017
+7.71% +11.54%
Nov 1990 - Oct 2007
0.00%
0 out of 295
+3.62%
Nov 2006 - Oct 2023
+5.68% +9.02%
Nov 1990 - Oct 2007
0.00%
0 out of 295
+5.43%
Nov 2000 - Oct 2018
+7.82% +11.38%
Jan 1988 - Dec 2005
0.00%
0 out of 283
+3.63%
Nov 2000 - Oct 2018
+5.79% +8.72%
Dec 1987 - Nov 2005
0.00%
0 out of 283
+5.57%
Jun 2001 - May 2020
+7.93% +11.23%
Dec 1987 - Nov 2006
0.00%
0 out of 271
+3.83%
Jan 2000 - Dec 2018
+5.74% +8.60%
Dec 1987 - Nov 2006
0.00%
0 out of 271
+5.30%
Apr 2000 - Mar 2020
+7.75% +10.55%
Dec 1987 - Nov 2007
0.00%
0 out of 259
+3.59%
Apr 2000 - Mar 2020
+5.56% +7.91%
Dec 1987 - Nov 2007
0.00%
0 out of 259
+5.97%
May 2000 - Apr 2025
+8.23% +10.11%
Dec 1990 - Nov 2015
0.00%
0 out of 199
+3.75%
May 2000 - Apr 2025
+6.17% +7.91%
Dec 1990 - Nov 2015
0.00%
0 out of 199
+7.23%
Nov 1993 - Oct 2023
+8.63% +9.41%
Dec 1987 - Nov 2017
0.00%
0 out of 139
+5.04%
Nov 1993 - Oct 2023
+6.50% +7.31%
Dec 1990 - Nov 2020
0.00%
0 out of 139
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