average up
Advanced (C1)formal
When you already own something and its price goes up, you buy even more of it, which makes your average price paid go higher.
"As the stock continued to climb, he averaged up, confident the upward trend would continue."
Hear it in context

Oil Climbs As US-Iran Deadlock Pushes Into Another Week | Closing Bell
Bloomberg Podcasts · 1:54
The Dow Jones Industrial Average up more than

AI Is Giving Financial Advice Now
The Plain Bagel · 16:16
you have a few outliers pulling the average up.

Reacting to the April US Jobs Report | Bloomberg Surveillance
Bloomberg Podcasts · 23:48
We've got the Dow Jones Industrial Average up

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CBS Pittsburgh · 4:45
And he's now got his batting average up to 260.

LIVE Car Talk + Q&A Ep. 192 - Matt Maran Motoring
Matt Maran Motoring · 35:47
got a lot of other stuff pulling that average up, you know.