From an article attached to the book: "From an initial list of 20,400 companies, we sifted through 11 layers of cuts to identify cases that met all our tests (

From an article attached to the book: "From an initial list of 20,400 companies, we sifted through 11 layers of cuts to identify cases that met all our tests (our study era ran through 2002). Only seven did. We labeled our high-performing study cases with the moniker "10X" because they didn't merely get by or just become successful. They truly thrived. Every 10X case beat its industry index by at least 10 times. Consider one 10X case, Southwest Airlines (LUV). Just think of everything that slammed the airline industry from 1972 to 2002: Fuel shocks. Deregulation. Labor strife. Air-traffic controller strikes. Crippling recessions. Interest rate spikes. Hijackings. Bankruptcy after bankruptcy after bankruptcy. And in 2001, the terrorist attacks of Sept. 11. And yet if you'd invested $10,000 in Southwest Airlines on Dec. 31, 1972 (when it was just a tiny little outfit with three airplanes, barely reaching breakeven and besieged by larger airlines out to kill the fledgling), your $10,000 would have grown to nearly $12 million by the end of 2002, a return 63 times better than the general stock market. These are impressive results by any measure, but they're astonishing when you take into account the roiling storms, destabilizing shocks, and chronic uncertainty of Southwest's environment. Meanwhile, Southwest's direct comparison, Pacific Southwest Airlines (PSA), flailed and was rendered irrelevant, despite having the same business model in the same industry with the same opportunity to become great." Src: http://www.jimcollins.com/books/great-by-choice.html http://www.jimcollins.com/books/great-by-choice.html