The most powerful formula in physics starts with a slender S, the symbol for a sort of sum known as an integral. Further along comes a second S, representing a quantity known as action. Together ...

Stock option ticker symbols contain four important details: the underlying stock, the expiration date, the call/put indicator, and the strike price. ... Zero-Sum Game: Of course, ...

Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in United States Steel Corp. (Symbol: X), where a total of 23,066 contracts have traded so ...

Now that symbol is available for the first time in more than a century. Meanwhile, the other 20 single-letter stocks chug along. Some are widely, or at least reasonably, known, with Citigroup ( C ...