A culture clash and fight for control ensued at the newly combined investment banking units of what is now known as Banc of America Securities.

[1] Thomas Weisel Partners, heavily focused on technology, prospered during the dot-com rise that peaked in its early years.

Bolstered by diversification into areas such as healthcare and consumer products, however, the firm survived and continued to operate independently.

[2] Following its acquisition of Westwind Partners that closed on January 2, 2008,[3] the firm now offers a broad coverage platform across technology, media, healthcare, consumer products, energy, mining, and real estate.

[4][5] Various divisions operate out of San Francisco, New York, Toronto, London, Baltimore, Zurich, Calgary, Montreal, Boston, Chicago, Cleveland, Denver, and Portland.