TheStreet.com

(TSCM)

has appointed James Lonergan as its chief operating officer, effective immediately.

The online financial news provider and publisher of this Web site said Lonergan was most recently the chief operating officer of

Worldly Information Network

and previously was the COO of a business unit within

Thomson Financial

.

Lonergan succeeds Tom Clarke, who was COO prior to being named CEO of TheStreet.com last November.

Shares of TheStreet.com recently climbed 13 cents, or 3.85%, to $3.38 in afternoon trading on the

Nasdaq

.