Alex Wong/ Getty Staff On Tuesday, Facebook CEO Mark Zuckerberg told investors that 2015 would be a major investment year for the company.

Facebook reported solid third-quarter earnings, but the stock fell after it gave poor 2015 guidance during a call.

The stock is down 10% after-hours.

While revenue and earnings per share were better than expected, Facebook’s new CFO, David Wehner, and CEO Mark Zuckerberg both warned that 2015 would be a major investment year for the company.

As a result, Wehner said Facebook’s expenses could grow between 50% and 70% next year. Facebook plans to increase headcount and invest in advertising technology.

Facebook revenue was $3.2 billion this quarter, nudging past Wall Street’s expectation of $3.12 billion. Its advertising revenue was $2.96 billion, a 64% increase from the same quarter one year ago. The remaining $264 million came from payments, which is a 13% increase from the same quarter last year.

Earnings per share is $0.43 versus an expected $0.40.

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Other than that, Facebook fell exactly in line with expectations. Its monthly active users numbered 1.35 billion, a 14% increase. Mobile monthly active users totaled 1.12 billion, with daily active users totaling  864 million.

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Facebook’s mobile advertising revenue continues to grow. This quarter, mobile ad revenue was up to 66% of the company’s total revenue. Last quarter it was  61%.

WhatsApp’s numbers  are also out. WhatsApp is the $22 billion chat application Facebook recently acquired. It lost $140 million last year and generated only $10 million in revenue. However, WhatsApp has 600 million monthly active users. No new monthly user metrics for Instagram were announced, although Zuckerberg says the average global user is spending 21 minutes per day on the photo-sharing app.

Zuckerberg also detailed his three-, five-, and 10-year plans for Facebook and stressed that the company was focused on the long-term.

In the short-term, Facebook’s goal is to continue growing and serving its communities and businesses and helping them reach full potential. That means Facebook will focus on growing things like Newsfeed, WhatsApp, and Instagram until they each connect at least 1 billion users.

Zuckerberg said his first priority was helping those offshoots of Facebook reach mass scale, then aggressively monetizing them. Sandberg reiterated that Facebook would be slow to monetize video placements and Instagram.

Facebook’s three-year plan also includes making improvements for advertisers. Facebook is particularly focused on helping brands better target users and measure campaigns more effectively.

Over the next five years, Facebook expects its popular Instagram, Search, and WhatsApp offshoots to reach 1 billion connected users. It also wants to become a developer-friendly platform that helps promote and monetize various apps across multiple devices.

Within 10 years, Facebook will strive to help build the next-generation computing platform, which Zuckerberg believes could be Oculus and augmented reality. Facebook acquired the virtual-reality headset company for more than $1 billion.

Internet.org is also part of Zuckerberg’s 10-year plan. He says efforts like this are driving fundamental changes in the world that Facebook needs to achieve its overall massive-connection mission.

We’re going to prepare for the future by investing aggressively, Zuckerberg said.

The strength of the business today is putting us in a strong position to invest in the future, Wehner added.

Here’s a summary of the earnings call:

Facebook’s VP of Investor relations kicked off the call. Now Zuckerberg is giving an update: These results show Facebook is getting stronger every day. While we’re investing aggressively, we continue to execute well against near-term priorities.

Around 700 million people now use Facebook Groups every month. This quarter, there are more than 1 billion interactions between public figures and fans on Facebook. This quarter, we achieved 1 billion native video views. More than 10 billion ice bucket challenge views on Facebook.

Zuckerberg: We’ve made big advances in ad tech. We’re excited about future of Atlas, which Sheryl will talk more about

Zuckerberg: For next 10 years we want to drive fundamental changes in the world and develop the next generation of platforms in computing. This is a very busy time for Internet.org.

Zuckerberg: Over the last few months I’ve traveled to several countries and met with people who are coming online for the first time.

Finally, our progress with Oculus. Ever 10-15 years, a new computing platform arrives and we think augmented reality is an important part.

We had the first Oculus developer platform. We continue to see a lot of excitement, and we’ve shipped more than 100,000 (?) deveper kits.

Our efforts here will take longer to make an impact.