Along with the rest of the industry, FPA has seen its stock fall, closing on Friday at $16.50, down from a 52-week high of $29.50.
A lack of progression since has seen his stock fall.
Even eToys.com, the top toy seller online last year, has seen its stock fall by 90 percent this year.
Zenith attributed the stock fall to the report, on which it also declined to comment.
The publishing and broadcasting concern has seen its stock fall since recently announcing lower earnings.
Morgan Stanley, one of the nation's most prestigious investment banks, saw its stock fall by $9 a share, to $55.50.
And Armco Inc., the nation's fifth-largest steel producer, has seen its stock fall from around $13 a year ago to its closing price of $4.25 yesterday.
"The stock fall is not having a critical impact on the economy," Taichi Sakaiya, the country's chief economics minister, told reporters.
Several other media companies have also seen their stock fall in recent months.
Investors have watched the stock fall from last year's high of $46.89 to a low of $3.33 this year.