Systems tested

Parabolic SAR on silver: $1,000 → $3,202, and the catch

Parabolic SAR turned $1,000 into $3,202 on silver.

1978.

Welles Wilder wrote a book of new trading systems.

It gave the world RSI, ATR, and a system that is never out of the market.

The rules
Always in. Always long or short. Never waiting.
Stop. A stop trails the price, a little faster with every new high or low.
Turn. The price touches the stop: close, and turn around.

Daily candles · Jan 2017 – Nov 2026 · fees 0.1% a trade included

What we found

$1,000 on XAG, 2017

$3,202

Just holding

+221%

Beat just holding, all 29 markets

4 of 29

Smaller worst drop than holding

6 of 29

Can we make it better?

We wrote down 21 changes before testing, and picked the one that did best on the first 70% of each market's history, across all 29: long only.

Then the real test: XAG after Nov 2023, data it never saw.

The original rules

+98%

Long only

+116%

Just holding

+104%

It held up on 15 of 29 markets.

Free account

The full test

Every market, the whole period against just holding, and after the cut: the original, the change, holding. Plus all 21 changes.

Sign in free to see all 29 markets and all 21 changes. Just your email, no card.

See the full test →

A setup is a starting point, not a verdict.

Other candles, stops, filters, your own coin: test every change on real data, before you risk a cent.

Test your own version

Past results, measured on real data with fees included. No promise of future returns. This is not investment advice.