Thomas Weisel Partners
 Thomas Weisel Partners Group Inc. also known as TWP or Weisel is a U.S. growth focused investment banking firm based in San Francisco California. The firm was launched in January 1999 by Thom Weisel and other personnel from the former Montgomery Securities. In 1997 Thom Weisel helped to orchestrate a $1.3 billion acquisition of Montgomery Securities by NationsBank.