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Symphonies
Jason's Overfit Nightmare
Today’s Change
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A symphony is an automated trading strategy — Learn more about symphonies here

About

A simple cash‑parking strategy: 100% in BIL (1–3 month U.S. T‑bills), 0% in SPYU. Rebalanced daily. Aims to preserve capital and earn short‑term T‑bill yields with very low volatility and no stock market exposure.
NutHow it works
It puts 100% of the money into BIL (SPDR Bloomberg 1–3 Month T‑Bill ETF), which holds very short‑term U.S. Treasury bills. A second fund, SPYU, is listed but kept at 0%, so it does nothing. The portfolio is rebalanced daily to stay at 100% BIL. Goal: keep money safe and earn the T‑bill yield.
CheckmarkValue prop
Ultra-safe cash parking in BIL shows extraordinary risk control in out-of-sample tests: near-zero beta, minuscule drawdown (~0.02%), Calmar ~174, and exceptional risk-adjusted returns, offering ballast versus the S&P 500 while preserving capital.
1M
3M
6M
YTD
1Y
3Y
Max
www.composer.trade
Performance
Compared to selected benchmarks
AlphaBetaR2R
SPY
0.05-00-0.02
Performance Metrics
Cumulative ReturnAnnualized ReturnTrailing 1M ReturnTrailing 3M ReturnSharpe Ratio
SPY
53.52%21.15%0.54%-0.34%1.29
Jason's Overfit Nightmare
10.64%4.63%0.28%0.86%19.51
Initial Investment
$10,000.00
Final Value
$11,063.93
Regulatory Fees
$0.00
Total Slippage
$1.00
Invest in this strategy
OOS Start Date
Nov 9, 2025
Trading Setting
Daily
Type
Stocks
Category
Capital preservation,cash management,t-bills,ultra-short duration,low risk,etf,daily rebalance
Tickers in this symphonyThis symphony trades 2 assets in total
Ticker
Type
BIL
State Street SPDR Bloomberg 1-3 Month T-Bill ETF
Stocks
SPYU
MAX S&P 500 4x Leveraged ETN
Stocks

FAQ

A Composer symphony is an automated trading strategy that executes trades based on parameters of your choice. Some symphonies are similar to holding one ETF in normal conditions and rotating to a different ETF when market conditions shift, for example a 5% drop in the S&P 500, while others use complex rules with dozens of triggers. However, complex doesn’t always mean better. A simple, well-structured symphony can be just as effective as an intricate one. Learn more about how symphonies work here.

"Jason's Overfit Nightmare" is currently performing the same as yesterday today. Performance updates in real time during market hours.

"Jason's Overfit Nightmare" is currently allocated toBIL. Holdings automatically adjust as market conditions change based on the strategy's rules.

Year-to-date, "Jason's Overfit Nightmare" has returned 3.64%. You can adjust the performance chart above to view returns across different time horizons.

The maximum drawdown for "Jason's Overfit Nightmare" is 0.02%. The maximum drawdown measures the largest peak-to-trough decline. It's an important metric to evaluate risk and the strategy's behavior during market stress.

To invest in "Jason's Overfit Nightmare", simply click the Invest button on this page. You'll need to open an account with Composer if you don't have one yet, then you can start investing. Composer will automatically execute the trades for you based on the strategy's rules. Composer also supports trading individual stocks, ETFs, and options.