Why beating buy-and-hold is a much higher bar than it sounds
"My strategy made money" sounds like success. It isn't, by itself — the real question is whether it made more money than doing nothing more sophisticated than buying the asset and holding it. That comparison is a much higher bar than it sounds, and most strategies that look good in isolation fail it.
Buy-and-hold isn't "doing nothing" — it's a real, hard-to-beat baseline
Buying once and holding has three structural advantages that are easy to underweight: zero ongoing trading fees after the initial purchase, zero slippage from repeated entries and exits, and full exposure to the asset's entire upward movement with no risk of being out of the market during the best days. Any active strategy pays trading costs every time it enters or exits, and risks being flat (or short) during exactly the sharp rallies that account for a disproportionate share of long-term returns. That's not a low bar to clear — it's a baseline with real, structural advantages built in.
A concrete example
Backtesting two simple technical strategies — an SMA crossover and an RSI mean-reversion rule — against SPY over two years:
| strategy | return | buy & hold | |---|---|---| | sma_crossover | 21.3% | 38.2% | | rsi_mean_reversion | 11.6% | 38.2% |
Both strategies were profitable in absolute terms — a return isn't the same as success. Both lost badly to simply holding the index over the same period. Reported without the comparison ("the strategy returned 21.3% over two years") this looks like a solid result. Reported with it, it's a strategy that underperformed doing nothing by 17 percentage points, while adding transaction costs, complexity, and time spent monitoring it that holding SPY doesn't require at all.
Why active strategies tend to lose this comparison
Trend-following and mean-reversion rules built on simple indicators generate trades on noise as often as on real signal, and every one of those trades pays fees and slippage that buy-and-hold never pays. In a market with a strong sustained uptrend specifically — like equities have shown over most multi-year windows — an active strategy that spends any time out of the market, or that whipsaws in and out around the trend, gives up part of exactly the gains that made buy-and-hold hard to beat in the first place.
This doesn't mean active strategies never work. It means the honest bar for "this strategy is worth using" isn't "did it make money" — it's "did it make more money, after real costs, than the boring alternative would have, and by enough to justify the added complexity and risk." Most backtests that report a return without that comparison are quietly failing to clear a bar they never actually stated.
Sources: this project's own backtest output
(trading/results/backtest_report.json), computed and verified directly, not illustrative
figures; general principle of risk-adjusted comparison against a passive baseline in
quantitative trading evaluation.