Chipotle Mexican Grill (CMG) wowed us with its fast-casual burrito restaurants. Intuitive Surgical (ISRG) soared with its robotic gear. And Apple (AAPL) hit pay dirt with the iPhone. Past big winners in the stock market often owe their advances to such big new products. Their runs also get sparked by new industry conditions, new management or some other new thing. "It takes something new to produce a startling advance in the price of a stock,"