Jack Dorsey gets kicked out of billionaire club.

Twitter CEO Jack Dorsey Is Officially No Longer a Billionaire

Twitter CEO Jack Dorsey Is Officially No Longer a Billionaire

Business Insider
Analyzing the top news stories across the web
Jan. 20 2016 2:32 PM

Twitter CEO Jack Dorsey Is Officially No Longer a Billionaire

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Excuse me? (Jack Dorsey in 2012 in Detroit, Michigan.)

Photo by Bill Pugliano/Getty Images

This post originally appeared on Business Insider.

After a month of slumping share prices for both Twitter and Square, the CEO of both companies, Jack Dorsey, is no longer a billionaire, according to Forbes.

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In the past month, Twitter has fallen from $23.14 per share on Dec. 31st to $15.64 today.

Square, which went public in November, has seen shares fall from $13.09 to $8.40 in the same time frame.

Wednesday's share prices mark a new all-time low for both companies.

Dorsey was Twitter's original CEO before leaving in 2008, only to return to the company in 2011 as an executive chairman and eventually returning to the role of CEO this past July. Between his tenures at Twitter, Dorsey co-founded the mobile payments startup Square in 2009 with Jim McKelvy.

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You can see the stock performances for both Twitter and Square in the charts below.

TwitterChart_01202016

Yahoo Finance

SquareChart_01202016

Yahoo Finance