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The Trinity Study Tables
Table 2: Portfolio Success
Rate: Percentage of all Past Payout Periods From 1946 to 1995 That
are Supported by the Portfolio
Note: Numbers in the table are rounded to the nearest
whole percentage. The number of overlapping 15-year payout periods
from 1946 to 1995, inclusively, is 36; 20-year periods, 31; 25-year
periods, 26; 30-year periods, 21. Stocks are represented by Standard
and Poor's 500 Index, and bonds are represented by long-term, high-grade
corporates.
Data source: Calculations based on data from Ibbotson Associates.
Portfolio Composition/
Payout Period |
Withdrawal Rate as a %
of Initial Portfolio Value
|
| 3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
| 100% Stocks |
| 15 Years |
100 |
100 |
100 |
100 |
100 |
100 |
97 |
86 |
69 |
64 |
| 20 Years |
100 |
100 |
100 |
100 |
100 |
97 |
81 |
61 |
45 |
42 |
| 25 Years |
100 |
100 |
100 |
100 |
100 |
88 |
77 |
46 |
42 |
38 |
| 30 Years |
100 |
100 |
100 |
100 |
100 |
90 |
76 |
52 |
52 |
38 |
| 75% Stocks-25% Bonds |
| 15 Years |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
86 |
69 |
53 |
| 20 Years |
100 |
100 |
100 |
100 |
100 |
97 |
77 |
48 |
42 |
32 |
| 25 Years |
100 |
100 |
100 |
100 |
100 |
85 |
54 |
42 |
31 |
27 |
| 30 Years |
100 |
100 |
100 |
100 |
100 |
81 |
52 |
48 |
38 |
29 |
| 50% Stocks-50% Bonds |
| 15 Years |
100 |
100 |
100 |
100 |
100 |
100 |
94 |
78 |
56 |
42 |
| 20 Years |
100 |
100 |
100 |
100 |
100 |
94 |
61 |
39 |
26 |
13 |
| 25 Years |
100 |
100 |
100 |
100 |
100 |
69 |
38 |
19 |
4 |
0 |
| 30 Years |
100 |
100 |
100 |
100 |
100 |
48 |
33 |
10 |
0 |
0 |
| 25% Stocks-75% Bonds |
| 15 Years |
100 |
100 |
100 |
100 |
100 |
100 |
89 |
53 |
25 |
17 |
| 20 Years |
100 |
100 |
100 |
100 |
100 |
68 |
23 |
13 |
6 |
3 |
| 25 Years |
100 |
100 |
100 |
100 |
73 |
15 |
8 |
0 |
0 |
0 |
| 30 Years |
100 |
100 |
100 |
100 |
19 |
0 |
0 |
0 |
0 |
0 |
| 100% Bonds |
| 15 Years |
100 |
100 |
100 |
100 |
100 |
72 |
39 |
33 |
19 |
11 |
| 20 Years |
100 |
100 |
100 |
94 |
42 |
29 |
23 |
10 |
0 |
0 |
| 25 Years |
100 |
100 |
96 |
54 |
15 |
12 |
4 |
0 |
0 |
0 |
| 30 Years |
100 |
100 |
48 |
10 |
0 |
0 |
0 |
0 |
0 |
0 |
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