Monthly Archives: October 2026

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Our Competitor Pair Trading Lab Has Closed: What PTL Users Can Do Now

October 22, 2026 11:30 am |
Pair Trading Lab alternative: Ultimate Alpha 3 pairs trading software

Pair Trading Lab shut down on 1 October 2026. Its website, pair database, backtester and analyzer are now offline. If you used PTL to find and test pairs, your research tools have gone, but your options haven’t.

We have built pairs trading software since 2008, so here is a plain guide for PTL users: what still works, what doesn’t, and the routes open to you now, including ours.

What still works, and what’s gone

According to Pair Trading Lab’s closure notice, PTL Trader keeps running. Everything that fed it new research has gone.

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Pairs Trading Half-Life: What 1,185 Pairs Taught Us

October 17, 2026 1:51 pm |

What is a pairs trading half-life?

When two related stocks drift apart, a pairs trader bets that the gap will close. The pairs trading half-life measures how long that usually takes. In other words, it is the number of days the pair needs, on average, to close half of the gap. A short half-life means the pair snaps back quickly, so your capital is tied up for days. A long one means a slow recovery and a long wait for your profit.

Our April post proposed a screen built on this measure.

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