Composer · investment strategy
by Composer Technologies · via Composer
A simple 90/10 plan: 90% in VOO (the 500 biggest U.S. companies) and 10% in VGSH (short‑term U.S. Treasury bonds), rebalanced once a year. Buffett’s minimalist recipe for long‑term growth with a small safety cushion.
Description from Composer
of the return and risk figures:as the source publishes them
What $10,000 would have become, from the strategy's own published history, against the S&P 500 over the same dates. The basis is labelled.
This strategy doesn’t publish a performance history we can chart.
Each rule is quoted word for word from the strategy's own documents.
No rules extracted from this strategy’s text yet.
2 positions as of 2026-10-11
: the platform's backtest holdings, not a client account.
Compares the stated rules with the holdings (or, where none are published, a mix estimated from returns), using tests fixed before any results were seen.
2.8% of weight in (IVV: 3.0%)
2 funds (SEC N-PORT, as of 2026-05-31)
This strategy’s rules haven’t been extracted yet, so there’s no claim to compare with. The measurement is still shown. : 98% · 2026-10-11 ()
0.0% of weight in (SPY: 0%)
This strategy’s rules haven’t been extracted yet, so there’s no claim to compare with. The measurement is still shown. : 100% · 2026-10-11 ()
0 of 2 funds in its are
This strategy’s rules haven’t been extracted yet, so there’s no claim to compare with. The measurement is still shown. : 100%
Strategies that share its Conservative risk label, from other sources first, strongest risk-adjusted return first.
Interactive Advisors
Quantbase
How much of what we look for this strategy has, and why anything is missing. Fields that don't apply to it aren't counted.
4 missing
The text the rules are quoted from, with where it came from.
Put 90% in VOO, a fund that owns shares of the 500 biggest U.S. companies (Apple, Microsoft, Google, Tesla, etc.).<br>Put 10% in VGSH, a fund that holds short‑term U.S. government bonds.<br>Once a year, move money to get back to 90/10. Stocks aim for growth; the bond slice adds a small safety cushion.
A simple 90/10 plan: 90% in VOO (the 500 biggest U.S. companies) and 10% in VGSH (short‑term U.S. Treasury bonds), rebalanced once a year. Buffett’s minimalist recipe for long‑term growth with a small safety cushion.
Out-of-sample, this 90/10 Buffett-style strategy offers higher risk-adjusted returns (Sharpe ~0.91 vs S&P ~0.88), lower max drawdown (~20.2% vs ~22.1%), and easier upkeep, delivering steadier long-term growth with simple rules.
A strategy for the ages, as laid out in Warren Buffett’s will. The will’s trustees are instructed to deploy 90% of the funds into the S&P 500 and 10% into short-term US government bonds. This strategy was developed by a future-gazing Warren Buffett and adapted into a symphony by Composer. By choosing to trade this strategy, you understand that the strategy employs ETFs, and that you understand the associated risks of trading, holding, and costs associated with ETFs, and also leveraged ETFs. Before investing in ANY strategy containing an ETF, please review the relevant ETF prospectus.
Every value on file, each labelled with its calculation basis and as-of date.
| Backtest final value (from $10,000) | $79k | 2026-10-11 | |
| Backtest regulatory fees | $1 | 2026-10-11 | |
| Backtest slippage cost | $2 | 2026-10-11 |
| AI categories (Composer) | 90/10 allocation, low-cost etfs, passive, short-term treasuries, us large-cap stocks, yearly rebalance | 2026-10-11 | |
| Asset classes / instruments | equities | 2026-10-11 |
| Logic complexity (node count) | 4 | 2026-10-11 | |
| Rebalance frequency | yearly | 2026-10-11 |
| Concentration (Herfindahl index, out-of-sample, as Composer reports it) | 0.83 | 2026-10-11 | |
| Ticker universe (assets the logic can hold) | show[ "VGSH", "VOO" ] | 2026-10-11 |
| Alpha vs SPY, out-of-sample (out-of-sample) | 0.00 | 2026-10-11 | |
| Beta vs SPY, out-of-sample (out-of-sample) | 0.88 | 2026-10-11 | |
| Correlation (R) vs SPY, out-of-sample (out-of-sample) | 1.00 | 2026-10-11 |
| Remixes (copies) | 1,418 | 2026-10-11 | |
| Watchers | 3,166 | 2026-10-11 |
| Backtest length | 4,045 | 2026-10-11 | |
| Out-of-sample length | 1,167 | 2026-10-11 | |
| Return, backtest period (annualized) (backtest) | 13.71% | 2026-10-11 | |
| Return, backtest period (cumulative) (backtest) | 687.15% | 2026-10-11 | |
| Return, out-of-sample period (annualized) (out-of-sample) | 13.61% | 2026-10-11 | |
| Return, out-of-sample period (cumulative) (out-of-sample) | 80.65% | 2026-10-11 | |
| Return, trailing 1 day (out-of-sample) | 0.55% | 2026-10-11 | |
| Return, trailing 1 month (out-of-sample) | 2.13% | 2026-10-11 | |
| Return, trailing 1 week (out-of-sample) | 1.05% | 2026-10-11 | |
| Return, trailing 1 year (backtest) | 15.74% | 2026-10-11 | |
| Return, trailing 1 year (out-of-sample) | 15.74% | 2026-10-11 | |
| Return, trailing 2 weeks (out-of-sample) | 0.88% | 2026-10-11 | |
| Return, trailing 3 months (out-of-sample) | 3.52% | 2026-10-11 | |
| SPY annualized return over the backtest window (backtest) | 14.94% | 2026-10-11 |
| Calmar ratio, backtest period (backtest) | 0.45 | 2026-10-11 | |
| Calmar ratio, out-of-sample period (out-of-sample) | 0.67 | 2026-10-11 | |
| Maximum drawdown, backtest period (backtest) | -30.49% | 2026-10-11 | |
| Maximum drawdown, out-of-sample period (out-of-sample) | -20.22% | 2026-10-11 | |
| Sharpe ratio, backtest period (backtest) | 0.92 | 2026-10-11 | |
| Sharpe ratio, out-of-sample period (out-of-sample) | 0.91 | 2026-10-11 | |
| Sortino ratio, backtest period (backtest) | 1.31 | 2026-10-11 | |
| Sortino ratio, out-of-sample period (out-of-sample) | 1.33 | 2026-10-11 | |
| Standard deviation, backtest period (backtest) | 15.15% | 2026-10-11 | |
| Standard deviation, out-of-sample period (out-of-sample) | 15.25% | 2026-10-11 |
| Risk rating (Composer data field) | Aggressive | 2026-10-11 |
| Annualized turnover, backtest period (backtest) | 0.17 | 2026-10-11 | |
| Annualized turnover, out-of-sample period (out-of-sample) | 0.18 | 2026-10-11 | |
| Daily win rate, backtest period (backtest) | 55.03% | 2026-10-11 | |
| Daily win rate, out-of-sample period (out-of-sample) | 54.24% | 2026-10-11 |
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