XXUANTIFY
Systems tested

12-month momentum on Netflix: $1,000 → $5,688, and the catch

Since 2017, 12-month momentum would have turned $1,000 into $5,688 on Netflix.

2012.

Three finance professors tested one rule on dozens of markets.

They called it time-series momentum.

The rules

Check. Once a month, is the price higher than 12 months ago?

In. Higher: be long, with the whole account. Lower: sell, and go short.

Nothing else. No stop. The paper also sized each market by its risk; here, the whole account.

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

What we found

$1,000 on NFLX, 2017
$5,688
Just holding
+352%
Beat just holding, all 29 markets
2 of 29
Smaller worst drop than holding
12 of 29

Can we make it better?

We wrote down 18 changes before testing, and picked the one that did best on the first 70% of each market's history, across all 29: cash instead of short.

Then the real test: NFLX after Dec 2023, data it never saw.

The original rules
+87%
Cash instead of short
+69%
Just holding
+34%
It held up on 7 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 18 changes.

Sign in free to see all 29 markets and all 18 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.

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