Other. Way earlier than any of your options. I would go back to Medieval times, and take a shitload of awesome stuff with me. I would be worshipped as a god, and rule over a vast kingdom. All of history would change because of me.
Keep in mind, you said stock market and sports outcomes, you said nothing about modern technology. As soon as they saw me killing dozens at a time with a flame thrower and hundreds at a time with a minigun, they would be forced to believe in my supernatural abilities, and bow down before me. Mwahaha.