Apple (Nasdaq: AAPL) plunged 11 percent in after-hours trading on Wall Street and 8 percent early Thursday in European trading after posting the slowest profit growth since 2003 and weakest sales increase in 14 quarters.

Higher costs and rising competition are making it harder to sustain revenue expansion.

Analysts said Apple’s warning suggested Apple can no longer sustain its growth without some completely new products. Its last revolutionary creation, the iPad, was launched in 2010. Co-founder Steve Jobs, who was the engine behind the creation of the iPod, iPhone and iPad, died in 2011.

“It has been an overriding concern with Apple that they would not be able to generate revenue growth just rolling out new versions of old products,” said Jeff Sica, president and chief investment officer of SICA Wealth Management. “Now they’ve proven it in their numbers.”

On a conference call with analysts, Apple CEO Tim Cook rebutted that idea, but as usual, gave no details.

“We’re working on some incredible stuff. The pipeline is chock full,” he said.

Apple Fallout

 “People are concerned about how quickly sales are falling off after the initial product launches and whether the company can deliver new and interesting products to reignite growth,” said Walter Piecyk, co-head of research at BTIG LLC in New York.

Apple suppliers also declined in Asia. Assembler Hon Hai Precision Industry Co. dropped 2.9 percent in Taiwan and speak- maker AAC Technologies Holding Inc. plunged 6 percent in Hong Kong. Samsung, which makes chips for Apple, fell 1.4 percent in Seoul.

Apple introduced the iPhone 5, iPad mini and a restyled Mac to draw customers in time for the first fiscal quarter, typically its most lucrative.

The company’s share price decline has shaved about $175 billion from its market capitalization since a September peak and means the company may lose its status as the world’s most valuable company to Exxon Mobil Corp. Apple fell in extended trading to as low as $457.30. The shares rose 1.8 percent to $514.01 at the close in New York, leaving it with a market value of $482.7 billion, compared with Exxon’s $413.5 billion.

Sales Forecast

For the fiscal second quarter, now under way, Apple forecast sales of $41 billion to $43 billion. That compares with predictions by analysts for revenue of $45.5 billion. Gross margin will be 37.5 percent to 38.5 percent, Apple said yesterday in a statement. Operating costs for equipment, retail stores and data centers will be $3.8 billion to $3.9 billion.

Apple changed the way it provides financial outlooks to investors, after years of exceeding quarterly profit estimates by an average of 26 percent. Rather than providing “conservative” forecasts, Apple expects to report results within its predicted range, Chief Financial Officer Peter Oppenheimer said on a conference call.

Red Flags

Competition from smartphone vendors using Google Inc.’s Android software, as well as the lack of a new breakthrough product since the iPad’s 2010 debut, has led Daniel Morris, chief investment officer of Morris Capital Advisors LLC, to reduce his holdings.

“It does raise some red flags,” said Morris, who first bought Apple before the iPhone was introduced.

Cook and Oppenheimer defended the company’s performance, saying iPhone, iPad mini and iMac sales were held back because the company couldn’t manufacture enough keep up with demand.

“There are a few factors that are impacting the year-over- year results, making the strong performance of the business a little harder to see,” Oppenheimer said.

Cook also addressed reports suggesting iPhone demand is waning because the company cut orders for some components.
“It would be impossible to interpret what it would mean for our entire business,” Cook said.

Era Ends

Even so, the results indicate that the period of rapid growth that Apple experienced in the six years after Jobs introduced the iPhone may be coming to an end. Samsung and others have followed Apple’s lead in to the era of mobile touch- screen devices and are grabbing market share by introducing smartphones in various designs and prices. Earlier this month, Samsung reported profit rose 89 percent to 8.8 trillion won ($8.3 billion).

“This confirms some of the worries that some of the investors had,” said Jack Ablin, chief investment officer at BMO Private Bank. “It’s a gigantic company, so incremental growth is just that much more difficult.”

To grab a larger portion of the global smartphone market, some Apple investors argue the company needs to introduce a lower-priced iPhone that can appeal to customers in developing countries where carriers don’t subsidize handset purchases.

Cook said Apple still offers consumers that option by continuing to sell older models at reduced prices. The iPhone 4 was selling out throughout the quarter, Cook said. In China, the world’s largest phone market, sales grew 67 percent to $6.8 billion. IPhone sales more than doubled in China, where Apple opened 4 stores during the quarter.

Mac Sales

Sales of the iPhone, Apple’s biggest source of revenue and profit, reached 47.8 million units, matching the prediction by analysts surveyed by Bloomberg. The company also sold 22.9 million iPads, above the projected 22.4 million units.

While Apple revamped its Mac personal-computer lineup during the quarter, selling 4.1 million Macs, that wasn’t enough to beat analysts’ estimates for 5.1 million units. Apple sold 12.7 million iPods, more than the projection for 11.4 million units. Cook said Apple couldn’t manufacture enough Macs to keep up with demand, holding back sales.

Some investors are looking at the drop-off in Apple’s stock since a September high as a buying opportunity.

“This is not by any stretch of the imagination a broken company,” said David Rolfe, chief investment officer at Wedgewood Partners.
Cook displayed similar confidence when asked about future products.

“We’re working on some incredible stuff,” he said. “We feel great about what we’ve got in store.”

(The AP and Bloomberg contributed to this report.)