Paul A. Helbling

thinkorswim group, inc. operates two segments' Brokerage Services and Investor Education. The company offers online brokerage, investor education and brokerage and related financial products and services for self-directed investors and traders. The company was founded by Tom Sosnoff and Peter Santori in 1999 and is headquartered in Chicago, IL.

INVESTools, Inc. provides investor education products and services through correspondence and online. It provides investors with INVESTools Method, an integration of investing process, Web-based tools, personalized instruction and support for investment performance. The company sells its products in various bundles containing multiple deliverables that include coaching sessions, web site subscriptions and educational workshops along with other products and services. INVESTools is based in Draper, UT.

HPC Industrial engages in the provision of industrial cleaning services. It offers hydroblasting, hydrocutting, chemical cleaning, wet and dry vacuum services, hydro excavation, turbine, solids separation, tank services, sewer system, catalyst, custom engineered solutions, paint booth management, confined space, refractory removal and jet pump replacement, industrial waste, downstream, upstream, utilities, speciality mechanical and turnaround services. The company was founded in 1977 and is headquartered in Deer Park, TX.

Part of Berkshire Hathaway, Inc., PCC Flow Technologies, Inc. produces alloys and metal injection molded parts and castings. The company is based in Portland, OR.