Does anything beat buy & hold on eBay Inc. (EBAY)?
Every setup we tested on eBay Inc. (EBAY) — ranked out-of-sample, corrected for multiple testing, and forward-tracked in public from the day this page published. The honest answer is the headline.
No setup beat simply holding once tested honestly. We say so plainly.
Its best setup trailed buy-and-hold out-of-sample. Buy-and-hold benchmark: +19.4% CAGR over 28.0 years (+14.9% CAGR in the out-of-sample window).
Educational research from historical backtests — not investment advice. Past performance does not predict future results.
EBAY: we tested 738 setups and none beat simply holding eBay Inc.
For eBay Inc. (EBAY), we ran 738 indicator configurations against a plain buy-and-hold benchmark, and none of them earned the right to replace it. Individual stocks carry idiosyncratic risk — earnings surprises, guidance changes, sector rotation — that indicators built on price history cannot see coming. The best-looking setup, Keltner Mean-Reversion on the daily timeframe, ranked at the top in-sample but delivered an out-of-sample Sharpe of 0.94, short of our hurdle of 1.25. Buy-and-hold returned +19.4% annualized over the test period; the top strategies mostly captured pieces of that same move while adding trading friction.
How to read this honestly: when you test 738 setups and keep the best one, something will always look impressive by chance alone. That is why we require the survivor to clear 1.25 out of sample. Keltner Mean-Reversion managed 0.94, with out-of-sample alpha of -1.8% across 8.4 years and 89 trades, and only 1.8% of everything we tested beat the benchmark on unseen data — roughly what luck would produce. None of this predicts anything: the regime that generated these numbers can shift, and single stocks shift faster than most. Treat this page as a record of what failed under honest testing, not a forecast.
Every figure above is computed from our own backtests — nothing is estimated or invented. Hypothetical results; not investment advice.
The least-bad setups — shown with their failure numbers
Nothing here earned a verdict — these are the best of a losing field, published so you can see exactly how "best" still failed.
Keltner Mean-Reversion
What it is: A channel / envelope rule: it measures how far price has travelled from a moving reference and acts at the extremes. Long/flat only — no leverage, no shorting. The parameters we tested are not published.
How it was tested: signals evaluated at daily-bar close, the position changes on the NEXT bar, 0.08% cost per side. Same engine, same cost model, same out-of-sample split as every other number on this site.
Out-of-sample (last ~30% of the window, never used to pick this setup): Sharpe 0.94 · alpha -1.8% · 31 trades over 8.4 yrs.
Piercing Line
What it is: A market-structure rule: it reacts to swing structure and prior levels rather than to a smoothed average. Long/flat only — no leverage, no shorting. The parameters we tested are not published.
How it was tested: signals evaluated at daily-bar close, the position changes on the NEXT bar, 0.08% cost per side. Same engine, same cost model, same out-of-sample split as every other number on this site.
Out-of-sample (last ~30% of the window, never used to pick this setup): Sharpe 0.87 · alpha -6.4% · 36 trades over 8.4 yrs.
Chaikin Money Flow
What it is: A volume-confirmation rule: it requires participation to confirm a move before taking exposure. Long/flat only — no leverage, no shorting. The parameters we tested are not published.
How it was tested: signals evaluated at weekly-bar close, the position changes on the NEXT bar, 0.08% cost per side. Same engine, same cost model, same out-of-sample split as every other number on this site.
Out-of-sample (last ~30% of the window, never used to pick this setup): Sharpe 0.81 · alpha +4.0% · 17 trades over 8.4 yrs.
Since publication — including if it loses
Buy-and-hold is ahead so far — we publish that too. That is the point. Marked to market nightly from real prices, rules frozen at publication, as of 2026-10-26. Currently FLAT.
We tested 738 setups (indicator × parameters × timeframe) on eBay Inc. (EBAY). Only setups with ≥30 trades qualify (650 did). Setups are ranked by out-of-sample Sharpe — the last ~30% of history, which standard-parameter rules never saw during selection. Because picking the best of 738 tries mines even the holdout, the VALIDATED verdict additionally requires the top setup’s OOS Sharpe to clear a selection hurdle of 1.25 (√(2 ln N)/√T) AND positive alpha in both windows. Of the eligible setups, 1.8% had positive out-of-sample alpha (median OOS Sharpe 0.27) — the table below is truncated, but this summary covers all of them. How we test: methodology. The scoring contract is published in full; the parameters of each individual setup are not.
Top 20 of 650 eligible setups
Ranked by out-of-sample Sharpe. Full + out-of-sample columns, costs included. Hypothetical.
| # | Setup | TF | Total ret | Sharpe | Max DD | Win | Trades | α vs B&H | OOS Sharpe | OOS α | OOS trades |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Keltner Mean-Reversion | Daily | >+999% | 0.61 | -60.7% | 71.9% | 89 | -7.2% | 0.94 | -1.8% | 31 |
| 2 | Piercing Line | Daily | +84.9% | 0.23 | -56.4% | 45.0% | 120 | -17.2% | 0.87 | -6.4% | 36 |
| 3 | Chaikin Money Flow | Weekly | +562.3% | 0.37 | -88.1% | 51.4% | 70 | -12.6% | 0.81 | +4.0% | 17 |
| 4 | MA Envelope | Daily | >+999% | 0.49 | -69.2% | 69.7% | 221 | -8.1% | 0.76 | -1.8% | 64 |
| 5 | FRAMA 10/30 Cross | Weekly | +184.0% | 0.27 | -68.4% | 51.0% | 98 | -15.8% | 0.75 | +2.2% | 34 |
| 6 | Vortex | Weekly | +238.7% | 0.29 | -86.5% | 46.8% | 79 | -15.1% | 0.73 | +1.1% | 21 |
| 7 | Random Walk Index | Weekly | +384.5% | 0.33 | -80.7% | 48.7% | 78 | -13.8% | 0.73 | +1.1% | 21 |
| 8 | Random Walk Index | Weekly | +384.5% | 0.33 | -80.7% | 48.7% | 78 | -13.8% | 0.73 | +1.1% | 21 |
| 9 | Holy Grail Confluence | Daily | +298.6% | 0.32 | -78.5% | 71.8% | 39 | -14.4% | 0.73 | -4.3% | 13 |
| 10 | Demand Index | Daily | +786.5% | 0.4 | -72.4% | 63.3% | 294 | -11.3% | 0.72 | +0.2% | 105 |
| 11 | Williams %R (50) | Weekly | +233.3% | 0.3 | -65.7% | 40.0% | 50 | -15.2% | 0.69 | +0.8% | 12 |
| 12 | Order-Flow Reversion | Daily | +856.3% | 0.45 | -50.2% | 72.0% | 107 | -11.0% | 0.69 | -4.8% | 30 |
| 13 | RSI (30) | Weekly | +88.0% | 0.22 | -82.4% | 37.5% | 56 | -17.3% | 0.68 | +0.4% | 10 |
| 14 | Squeeze Momentum | Weekly | +127.6% | 0.25 | -53.4% | 43.7% | 87 | -16.6% | 0.68 | -4.0% | 24 |
| 15 | WMA 10/30 Cross | Weekly | +184.1% | 0.27 | -74.5% | 47.2% | 36 | -15.8% | 0.66 | -0.6% | 10 |
| 16 | Hull MA 200 Trend | Weekly | +470.7% | 0.41 | -54.3% | 45.2% | 31 | -13.2% | 0.66 | -1.2% | 10 |
| 17 | Hull MA 15/60 Cross | Daily | >+999% | 0.43 | -65.7% | 49.8% | 217 | -10.4% | 0.66 | -1.6% | 63 |
| 18 | G-Channel | Weekly | >+999% | 0.54 | -58.5% | 47.5% | 40 | -4.8% | 0.65 | -0.5% | 10 |
| 19 | RSI (25) | Weekly | +69.1% | 0.21 | -83.7% | 37.3% | 67 | -17.7% | 0.65 | -0.5% | 14 |
| 20 | Disparity (50) | Weekly | +145.2% | 0.25 | -82.4% | 36.9% | 65 | -16.3% | 0.65 | -0.5% | 14 |
Hypothetical backtests with 0.08%/side costs. Not investment advice — see the full disclaimer.
These are historical backtests of mechanical rules. They are educational research, not investment advice, not a recommendation, and not tailored to you. Educational information only — not investment advice. Hypothetical backtested results; past performance does not guarantee future results. Trading involves risk of loss.