What are the hottest startups in India

We'll probably see these 10 adtech start-ups on the stock market soon

These are the hottest companies in the adtech business and number 1 is even one step ahead

These are the hottest adtech startups.

Not every adtech company has had good experiences with going public. As you can see from our stock portfolio in the right column, Criteo and Rubicon Project are doing very well in terms of stock value - others like Rocket Fuel and Millennial Media are losing value. These companies dared to go public to raise even more cash and advance reach and technology. Business Insider has now listed the most interesting startups that still have this step ahead of them and the result reads like a who's who of the new players on the market. We show the 10 hottest adtech startups.

Only adtech companies that are not yet listed on the stock exchange were included in the list. An important factor in the order is current sales, but hot rumors about exits or upcoming IPOs also have an influence. Israeli companies stand out in the top 10. In addition to the USA, the country in the Middle East defines the market with some marketing unicorns. But, as expected, the number 1 comes from North America and should surprise you.

Place 10: Undertone - Ads with a bang

Estimated sales: approximately $ 200 million

Undertone CEO Corey Ferengul (Photo: Undertone)

Undertone is also on the move in Germany and focuses on video ads that work on all display sizes. This means that the start-up is right on trend. The form of advertising baptized by Undertone PageGrabber takes over the entire screen and offers users opportunities for interaction. This opens up completely new opportunities in terms of visibility on mobile devices. A year ago, Undertone bought the programmatic forge Upfront and now sells its video ads automatically. "We assume that we can shovel many programmatic budgets of the brands free," says Undertone co-founder Eric Franchi to Ad Age. The advance of the start-up makes it possible for brands like American Express to rely entirely on automatic channels, as they have planned.

9th place: Mediaocean - On the way to TV

Estimated sales: approximately $ 233 million

Mediaocean's portfolio includes 80,000 brands, marketers and agencies. The start-up processes around 100 billion US dollars in media spending worldwide. With this impact, it is no wonder that the US company is one of the first partners of Facebook's Atlas platform. Agencies and brands manage the entire advertising process with the software platform from Mediaocean. The start-up recently expanded the platform by partnering with iSpot.tv to manage television advertising. This allows Mediaocean customers - at least in the USA - to gain deeper insights into the performance of TV advertising. iSpot.tv not only tracks ads but also suitable user activities in social networks, Google searches and on video portals.

8th place: Outbrain - recommendation platform shortly before the IPO

Estimated Revenue: $ 260 million

Outbrain CEO Yaron Galai (Photo: Outbrain)

Probably the best-known adtech start-up in Germany from the list. Large media brands such as Axel Springer, Handelsblatt and Focus Online rely on the content recommendation platform Outbrain. The Israelis managed to make a name for themselves despite local competition from Plista and Ligatus. Outbrain shows further content and native advertising in recommendation boxes under the online articles. According to the company, around 190 billion recommendations reach around 561 million users a month - a great opportunity for marketers, brands and publishers to increase reach and length of stay. Outbrain is about to go public and, according to the Wall Street Journal, wants to be listed on the Nasdaq. Should it come to that, CEO Yaron Galai is said to be hoping for a valuation of around $ 1 billion.

7th place: InMobi - in the sights of Google?

Estimated Revenue: $ 400 million

InMobi CEO Naveen Tewari (Photo: InMobi)

The start-up from Bangalore, India is in talks with Google, according to a report by the Economic Times. InMobi CEO Naveen Tewari denied the takeover rumors, but a purchase could still make sense for Google and the start-up. With InMobi, the Internet giant from Mountain View could better arm itself against Facebook's dominance in the mobile advertising market. According to its own statements, the RTB network delivers almost 200 billion impressions on mobile devices every day. Similar to Facebook, the start-up relies on data-driven analysis of smartphone users in order to display the right advertising to the right customer at the right moment - also within apps. However, there is hardly a herb against Facebook in this market, so there is now some headwind for InMobi. In addition to investors such as SoftBank, Kleiner Perkins & Byers and Sherpalo, the start-up wanted to raise $ 300 million from new donors last year. They disagreed with the $ 2 billion valuation of the start-up and so the financing round fell through.

6th place: Videology - trendsetter in the video market

Estimated sales: approximately $ 300 million

As one of the leading programmatic platforms for video ads, Videology is at the forefront of a rapidly growing business. The automated placement of video campaigns works with the start-up on all screen sizes and also with TV advertising. And the market is changing at breakneck speed. Videology states that the penetration of automated video ads on mobile devices increased by 81 percent from the fourth quarter of 2014 to the first quarter of 2015. Almost 58 percent of the campaigns on Videology ran on multiple devices. The steep rise in the mobile sector could be one reason why the start-up is delaying the IPO and is waiting for further developments. CEO Scott Ferber had announced an IPO for 2015 to Business Insider.

5th place: MediaMath - profitable and far from being there

Estimated sales: $ 300 million to $ 400 million

MediaMath CEO Joe Zawadzki (Photo: MediaMath)

Last year, Business Insider asked several CEOs about the hottest adtech start-up, and MediaMath kept popping up in the answers. The start-up is developing a Demand Side Platform (DSP) that allows marketers to buy advertising space on one surface using real-time bidding. The clients can then observe their campaigns live and adjust parameters and goals in real time. According to MediaMath, the start-up reaches almost 95 percent of online users worldwide and was profitable in 2014 through sales of 311 million US dollars. This also frees up a bit of money and so the company bought Upcast in October 2014 in order to be present on social networks such as Facebook. In Germany, the company does not operate under its own name. Together with the Swiss marketing company PubliGroupe, MediaMath founded the Spree7 GmbH joint venture based in Berlin.

4th place: Taboola - Outbrain competitor that nobody here knows

Estimated Revenue: over $ 300 million

Taboola CEO Adam Singolda (Photo: Taboola)

A few days ago we already introduced you to Taboola. Like one of its biggest competitors, Outbrain, the content recommendation platform comes from Israel and is also valued at just under 1 billion US dollars. A few weeks ago, Baidu joined Taboola as an investor and partner. Together with the Chinese search engine giant, the start-up wants to attack the market in the Far East. Taboola partners in the US include USA Today, Fox Sports and NBC. According to ComScore, the start-up reached more Internet users than Facebook, Yahoo and AOL via channels like these. In Germany, Taboola has so far only been active to a small extent, here the established competitors Outbrain, Plista and Ligatus play a larger role. An IPO that flushes a lot of cash into your pockets could fuel an attack on the local market again, but CEO Adam Singolda sees no reason for this step yet.

3rd place: IronSource - Israeli unicorn on the way to Europe

Estimated sales: approximately $ 350 million

Originally started as an app developer, the IronSource team is now helping other developers with its own platform. In the competitive and overcrowded app market, it is difficult to reach a certain number of suitable users. Since the start in 2010, IronSource has blossomed into the leading platform for app discovery, delivery and monetization. The start-up manages 7 million app installations of over 70,000 apps per day. Through the in-depth analysis of the app users, developers can specifically design a model for the monetization of their app, be it special forms of advertising or in-app purchases. In April IronSource opened an office in London to gain a foothold in the European market. There are currently many indications that an IPO is pending, the valuation is said to be over 1 billion US dollars.

2nd place: AppNexus - on the go with a strong partner

Estimated sales: approximately $ 300 million

Last year, WPP - the world's largest advertising agency - invested 25 million US dollars in the RTB network AppNexus and now holds almost 15 percent of the company. AppNexus itself was valued at around $ 1.2 billion at the time of the deal and, above all, gains security with the strong partner. Because it was less about cash than about WPP's promise to continue playing customer campaigns via AppNexus. The company specializes in real-time advertising and manages around 45 billion advertising space purchases per day. To keep up with Google and Facebook, the RTB platform bought companies for a total of US $ 200 million last year. The path clearly leads to an IPO, maybe later this year: "If the value of the company doubles every 12 to 18 months, the IPO is an option," said CEO Brian O’Kelley to Forbes.

1st place: Pinterest - the value outshines everything

Estimated sales: approximately $ 500 million by 2016

Pinterest CEO Ben Silbermann (Photo: Flickr)

Surprised Shouldn't you be: Pinterest has already raised 1.3 billion US dollars in several investment rounds and is now worth 11 billion US dollars. The social network is mutating more and more into an adtech monster because it offers users content that they really want (to buy) and allows marketers to access user data through partners like Salesforce. With the start of advertising posts, sales are expected to grow to $ 500 million. The network is prepared for the future: 80 percent of the accesses come from mobile and the majority of users are women. Most of the 30 billion photos shared are product images from online stores. The number of visitors is rising steadily in Germany, but the network is still not as popular as in the USA. Pinterest does not publish hard numbers; according to ComScore, the website had 2.1 million visitors a month in this country in mid-2014 - about half as many as Brigitte.de in March 2015.