Is Facebook forging relentlessly onwards towards world domination - or has it peaked, a social network that appeals more to silver surfers than young digital natives?
Today, Apple is trading at 8.2x FY 2012 earnings (less cash) because investors are concerned that it has peaked in terms of market capitalization and that there are no new investors to come into the stock.
Critics of Apple say that the company has run out of investment opportunities, while the smartphone and tablet market it dominates has peaked, and is seeing tougher competition from the likes of Korea's Samsung and China's Huawei.
And the Bank of England is likely to wait and see if earnings growth really has peaked before it cuts interest rates.
Since 2007, when the number of shoppers on Black Friday weekend might well have peaked, it has nearly doubled.
It looks as though he has peaked.
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World crude oil production has in some cases already peaked (sweet, light) while others (heavy, sour) it has yet to be will soon.
Since the market in telecoms shares peaked in March last year, it has fallen persistently.
It said that employment peaked in December 2007 and has been falling every since.
Analysts warn that it is still too early to tell if violence has peaked in Mexico and will continue to decline.
While a few argue that Big Data has peaked in its hype cycle, many practitioners contend it is still in very early stages of development.
It peaked at the end of the 1970s, and has been falling off ever since.
As a fad--and it is a fad--the catastrophist's view of global warming has peaked.
It peaked at 10 percent in late 2009, and, from there, has declined to 7.9 percent as of mid-October 2012.
Chief economist Jed Kolko says the Barometer has only been around for 18 months, but when the indicators peaked in late 2005 or early 2006 it would have been somewhere near 150%.
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