The thesis
Momentum SMA20 Rider is a disciplined trend-follower. It ranks a 24-name large-cap universe — the usual megacap tech, financials, staples, and energy suspects (AAPL, MSFT, NVDA, JPM, XOM, and friends) — by how far each trades above its SMA50, then buys the leaders whose price is still holding above the SMA20. The exit logic is refreshingly explicit: cut when RSI14 pushes past 75 (overbought) or when price closes below the SMA20 (trend structure broken), and rotate freed capital into higher-ranked names when the book is full. It is a classic "ride the strongest, drop the broken" design, and there is nothing mysterious about why it works when it works.
Backtest and validation
The headline numbers are attractive: an 81% total return over 1,233 days, final equity of $18,100 from a $10,000 base, and a 12.89% CAGR. The Sharpe of 0.98 is respectable rather than spectacular, and max drawdown of 20.91% is meaningful but survivable.
What gives the strategy more credibility than a single lucky run is the walk-forward validation. It passed, with 3 of 4 folds positive and a strong out-of-sample leg: 43.48% OOS return at a 2.18 Sharpe. The statistical guardrails are encouraging too — a Probabilistic Sharpe Ratio of 0.986 and a Deflated Sharpe of 0.583 across 24 trials suggest the edge is unlikely to be pure overfitting, even after accounting for the search effort.
The risks worth naming
The fold detail is where balance is required. Fold 3 (Feb 2024–May 2025) essentially flatlined at -0.28% with a 23% drawdown — the strategy's worst structural test — and Fold 1 eked out just 4.77%. The performance is concentrated in Folds 2 and 4. In other words, this is a strategy that shines in clean trending regimes and treads water in choppy ones.
The 37.13% win rate is normal for momentum (a few big winners carry the book), but it demands patience and position sizing discipline that a live operator may not always tolerate. Turnover of nearly 27,000% is enormous; across 1,427 trades the strategy paid $1,427 in fees — small here, but a real drag that scales with slippage in the wild.
The live picture
This is where I'd flag caution. The recent trade log shows a burst of buys on August 6 — JPM, ABBV, BAC, V, and MA — after which the book filled and every scheduled run from August 7 through August 13 executed zero trades. Cash sits idle at $626.50, and total account value has drifted between roughly $9,832 and $9,933. Against a backtest that turned $10,000 into $18,100, the live account is modestly below its starting stake. It's far too early to read anything into a week of a full, quiet book, but the gap between simulated and realized results is the number to watch.
Verdict
A well-specified, validation-tested trend-follower with honest weaknesses: regime dependence, a low win rate, and heavy turnover. The paper trail earns it a live slot; the live results have yet to earn it conviction.