SEF Stainless Steel
SEF Stainless Steel fabricates and installs stainless steel, galvanized steel, wrought iron, and aluminum products including stairs, railing, grating, and structural steel.
Provides business analytics and data-visualization software.
Spun out of Stanford University, business analytics company Tableau Software was founded by Christian Chabot, Chris Stolte, and Pat Hanrahan. The three co-founders also played a hand in the invention of a data-visualization language called VizQL, implemented in Tableau's original software. The company aims to help businesses see and understand their data better, selling software that turns data points into visual presentations. Tableau's history of profitability has been spotty--it turned a profit in 2013 and 2014, and then lost money in 2015--so it is unclear how successful the company will be in the future. But Tableau feels that it is well positioned, since the business-analytics-software industry is still relatively new. Note: employee count as of Dec. 31, 2015