Earlier, CBS stock had ended the day at $65.625, down $1.125.
There are roughly 12.5 million shares of CBS stock outstanding, and it closed yesterday at $321.375, up 62.5 cents.
Wall Street took the news badly as well: CBS stock plunged nine points over the following week.
CBS stock has risen about 13.5 percent a year since mid-1986, slightly outperforming the market.
"I think his goal is to try to get CBS stock to 100."
CBS stock climbed $1.25 and closed the week at $171.50.
The CBS stock they bought at $141 a share jumped to $161.
With CBS stock now trading at $78.125, buying the network seemed highly unlikely to several bankers and analysts.
CBS stock climbed for the third straight day after a published report that the company was considering a stock buyback.
The price of CBS stock fell $7.50 yesterday, to $158.125.