It wasn't long ago that Facebook was widely seen as having a"mobile problem." Those days are gone, and investors couldn't be more pleased.

Facebook (FB, Tech30) shares soared 8% in premarket trading Thursday after the tech giant said in its quarterly earnings late Wednesday that mobile ads accounted for about 62% of its ad revenue in the second quarter, up a from just 41% a year prior.

The stock is poised to open at an all-time high. Facebook's shares are already up more than 30% this year, buoyed by the company's newfound success in mobile advertising.

Wall Street's early skepticism about Facebook's ability to make money from mobile has faded. Several analysts raised their price targets on the stock following the earnings report.

In one of the most bullish forecasts, Jefferies' internet research team boosted its Facebook target to $100 per share. The stock closed at $71 Wednesday.

The Jefferies analysts cited Facebook's "deepening ties" to e-commerce. The company recently unveiled a Buy button for small businesses. They also believe that Facebook still has untapped potential for growth in mobile services such as Instagram and its Audience Network for advertisers.

"We find it impressive Facebook continues to beat our estimates without any meaningful contribution from these promising new products," the Jefferies analysts wrote.

Facebook's success in mobile is timely, with Web users flocking to mobile devices and leaving their desktops behind. January marked the first time ever that Americans used smartphone and tablet apps more than PCs to access the Internet, according to comScore.

Facebook said its base of daily active users averaged 829 million in June, with 654 million on mobile devices.

Related: Facebook experiment upsets regulators

Facebook didn't make any money on mobile as recently as 2011. Then Chief Financial Officer David Ebersman acknowledged to investors ahead of the company's 2012 IPO that mobile monetization could be "uncertain."

In the years since, however, the social network has successfully introduced mobile ads, redesigned the mobile news feed and debuted a number of new apps to expand its offerings for marketers.

Speaking on a conference call with analysts Wednesday afternoon, Facebook Chief Operating Officer Sheryl Sandberg said the company was seeing "positive early demand" for its recently introduced ads on Instagram. Facebook also recently began displaying video ads that play automatically.

CEO Mark Zuckerberg said Facebook users in the U.S. already use the service for around 40 minutes each day on average, but that there's more room for growth.

"People in the U.S. spend about nine hours per day engaging with digital media -- on TVs, phones and computers -- so there's a big opportunity to improve the way people connect and share," he said.

Overall, Facebook's second-quarter sales rose 61% to $2.9 billion, while earnings hit $791 million. Both figures came in ahead of Wall Street expectations. 

手機上Facebook的力量在歷史高位
由詹姆斯·奧圖爾 @ jtotoole 2014年7月23日上：6:32 PM ET

Facebook是都長大了
585
股份總數
157
421
7
紐約（CNNMoney）
這是不久前，Facebook的被廣泛視為具有“移動的問題。”那些日子已經一去不復返了，投資者不能更高興。
的Facebook （FB，Tech30）股價在盤前交易日上漲8％，其季度盈利，週三尾盤的科技巨頭後說，手機廣告約佔62％，其廣告收入在第二季度，一個來自只有41％的速度增長之前。

該股有望在打開的歷史新高。Facebook的股價已經上漲超過30％，今年，該公司的提振在手機廣告新發現的成功。
華爾街的關於Facebook的能力，從移動賺錢早期的懷疑已經漸漸淡去。一些分析師下列財報中提出了他們對股票價格的目標。
在最樂觀的預測之一，傑富瑞互聯網研究團隊提升了其Facebook的目標，以每股100美元。該股收於71美元週三。
該Jefferies的分析師稱Facebook的“深化關係”電子商務。該公司最近推出了一個購買按鈕為小型企業。他們還認為，Facebook的還有尚未開發的潛力增長的移動服務，如Instagram的，其受眾的網絡廣告商。
“我們發現它令人印象深刻的Facebook仍然沒有從這些有前途的新產品有任何有意義的貢獻超出我們的估計，”傑富瑞的分析師寫道。
Facebook的成功中移動是及時的，與網絡用戶蜂擁到移動設備和離開他們的台式機後面。一月標誌著有史以來第一次，美國人使用智能手機和平板電腦的應用程序超過個人電腦接入互聯網，根據comScore的。
Facebook表示在六月份的每日活躍用戶的基礎平均8.29億，擁有6.54億移動設備上。
相關閱讀：Facebook的實驗攪得監管
Facebook的沒有賺到錢的手機，最近在2011，然後首席財務官David Ebersman承認對投資者未來該公司2012年首次公開招股的移動貨幣化可能是“不確定”。
自去年年中，然而，社交網絡已經成功地推出了移動廣告，重新設計了移動News Feed和推出了一些新的應用程序，以擴大其產品的市場營銷。
在談到與分析師週三下午的電話會議上，Facebook首席運營官桑德伯格表示，公司看到“陽性的早期需求”在其最近推出的廣告Instagram的。Facebook的最近也開始顯示視頻廣告的自動播放。
CEO馬克·扎克伯格表示，Facebook在美國的用戶每天使用已有的服務，為大約40分鐘的平均值，但有更大的成長空間。
“在美國的人每天花大約九小時的數字媒體參與 - 在電視，手機和電腦 - 所以有改善人的聯繫方式，並共享一個巨大的機會，”他說。
總體而言，Facebook的第二季度銷售額增長61％，達29十億，而盈利創下7.91億美元。這兩個數字排在了華爾街的預期提前。