Bill Bernstein Sheltered Sam 20/80 Portfolio: Rebalancing Strategy

Data Source: from January 1985 to February 2024
Consolidated Returns as of 29 February 2024

Managing the Bill Bernstein Sheltered Sam 20/80 Portfolio with a yearly rebalancing, you would have obtained a 5.09% compound annual return in the last 30 Years.

With a quarterly rebalancing, over the same period, the return would have been 5.10%.

How do returns and drawdowns change, implementing different rebalancing strategies?

Rebalancing Strategies

In order to keep risk under control, you should rebalance assets quotes from time to time, so to keep them at the original percentage of the asset allocation.

Rebalancing can be performed in several ways.

At fixed time intervals:
  • Yearly: Jan 1st
  • Half Yearly: Jan 1st, Jul 1st
  • Quarterly: Jan 1st, Apr 1st, Jul 1st, Oct 1st
When a component (at least one) diverges from its original weight beyond a certain threshold (e.g. 5% or 10%).

Portfolio Returns as of Feb 29, 2024

Implementing different rebalancing strategies, the Bill Bernstein Sheltered Sam 20/80 Portfolio guaranteed the following returns.

According to the available data source, we assume we built the portfolio on January 1985.

Portfolio returns are calculated in USD, assuming:
  • No fees or capital gain taxes
  • the reinvestment of dividends, if existing
BILL BERNSTEIN SHELTERED SAM 20/80 PORTFOLIO RETURNS
Period: January 1985 - February 2024
Annualized Returns
Swipe left to see all data
Return (%) and number of rebalances as of Feb 29, 2024
Rebalancing Strategy 1Y 5Y 10Y 30Y MAX
(~39Y)
Yearly Rebalancing 5.25 (1) 3.12 (5) 2.74 (10) 5.09 (30) 6.63 (40)
Half Yearly Rebalancing 5.19 (2) 3.18 (10) 2.77 (20) 5.03 (60) 6.57 (79)
Quarterly Rebalancing 5.25 (4) 3.30 (20) 2.83 (40) 5.10 (120) 6.63 (157)
5% Tolerance per asset 5.23 (0) 3.15 (1) 2.93 (2) 5.27 (9) 6.73 (11)
10% Tolerance per asset 6.04 (0) 3.29 (0) 3.01 (1) 5.06 (2) 6.60 (3)

In order to have complete information about the portfolio, please refer to the Bill Bernstein Sheltered Sam 20/80 Portfolio: ETF allocation and returns page.

Performances as of Feb 29, 2024

Historical returns and stats of Bill Bernstein Sheltered Sam 20/80 Portfolio, after implementing different rebalancing strategies.

BILL BERNSTEIN SHELTERED SAM 20/80 PORTFOLIO PERFORMANCES
Period: January 1985 - February 2024
Swipe left to see all data
Standard Deviation
Max Drawdown (%)
Rebalancing Strategy Return % Std Dev(%) Ret. / Std Dev MaxDD(%) Ret. / MaxDD
Yearly Rebalancing 6.63 (40) 4.50 1.47 -11.24 0.59
Half Yearly Rebalancing 6.57 (79) 4.49 1.46 -11.57 0.57
Quarterly Rebalancing 6.63 (157) 4.51 1.47 -12.02 0.55
5% Tolerance per asset 6.73 (11) 4.56 1.47 -11.24 0.60
10% Tolerance per asset 6.60 (3) 4.89 1.35 -12.34 0.54
(*) Since Jan 1985 (~39 yrs) | Annualized Returns (and number of rebalances)

Drawdowns as of Feb 29, 2024

Historical Drawdowns of Bill Bernstein Sheltered Sam 20/80 Portfolio, after implementing different rebalancing strategies.

BILL BERNSTEIN SHELTERED SAM 20/80 PORTFOLIO DRAWDOWNS
Period: January 1985 - February 2024
Swipe left to see all data
Rebalancing
Tolerance per asset
Yearly Half Yearly Quarterly 5% 10%
-11.24
Jan 2022 - In progress
-11.57
Jun 2008 - Sep 2009
-12.02
Jun 2008 - Sep 2009
-11.24
Jan 2022 - In progress
-12.34
Jan 2022 - In progress
-11.12
Jun 2008 - Sep 2009
-11.36
Jan 2022 - In progress
-11.38
Jan 2022 - In progress
-10.67
Jun 2008 - Sep 2009
-11.88
Jun 2008 - Nov 2009
-5.52
Feb 1994 - Mar 1995
-5.52
Feb 1994 - Mar 1995
-5.54
Feb 1994 - Mar 1995
-5.56
Feb 1994 - Apr 1995
-5.61
Feb 1994 - Apr 1995
-4.40
Sep 1987 - Jan 1988
-3.84
Feb 2020 - Jun 2020
-3.84
Feb 2020 - May 2020
-4.41
Sep 1987 - Jan 1988
-5.58
Sep 1987 - Feb 1988
-3.84
Feb 2020 - Jun 2020
-3.46
Sep 1987 - Jan 1988
-3.17
Aug 1990 - Nov 1990
-4.01
Feb 2020 - Jun 2020
-4.68
Aug 1990 - Dec 1990
5 Worst Drawdowns - Average
-7.22 -7.15 -7.19 -7.18 -8.02
10 Worst Drawdowns - Average
-5.05 -5.01 -5.02 -5.19 -5.84

For a deeper insight, please refer to the Bill Bernstein Sheltered Sam 20/80 Portfolio: ETF allocation and returns page.