The Test Bench › scanner

Does CAN SLIM (full) actually work?

REAL

A measurable edge that survived the checks we ran.

The claim

High relative-strength leaders near highs WITH real earnings growth outperform — William O'Neil / IBD

What we did

Tested against Equal-weight survivorship-free peer universe + SPY, net of cost, 2003–2026, OOS ≥ 2021.

The result

Result: 6.1 net-αSPY %/yr (beats index net of cost)

vPEERS +5.0, IS +2.9 → OOS +6.6, net-αSPY +6.1%/yr

Verdict

The one scanner that cleared every bar: skill over peers, survives out-of-sample, AND beats the index net of cost. The earnings leg is what flips it from hype to real.

What the test did and did not do

survivorship-free universe
net of real costs
tested out of sample
point-in-time data
checked for look-ahead

Almost nobody publishing a backtest says which of these they did. We list the ones we failed as well as the ones we passed.

Tested 2026-06-23. The same treatment, applied to every other system, is on the test bench.

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Written with AI assistance from our own test database. The numbers are computed, not composed.
General market commentary for education, not personalised investment advice. Backtested results are hypothetical. Trading carries a real risk of loss.