Jack Dorsey

Jim McKelvey, Co-founder, Square
Scott Pham|KBIA

It has been a big year for an emerging technology company with St. Louis roots.

Square went public on the New York Stock Exchange a few weeks ago. It also opened a St. Louis office, which is expected to employ more than 200 in five years.

(Courtesy of Square)

With Twitter making its New York Stock Exchange debut today we're highlighting its co-founder's perspective on the company's value in true Twitter fashion.

Here, in 140 seconds, St. Louis native Jack Dorsey shares his thoughts about what makes his company worth $26 per share - and worth using for its millions of tweeters. 

(Courtesy Square Inc.)

One of the hurdles small businesses face is the potential loss of a sale if they don't have the infrastructure in place to accept credit card and debit card payments.

St. Louis native Jack Dorsey, CEO of Square Inc., a mobile payments device company, makes that hurdle easier to jump but he says the company has more to offer than concrete tools of the trade.