Stock Market Tamer Hassan white ops

White Ops CEO and co-founder Tamer Hassan.

White Ops

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  • Adtech stocks have surged this year and adtech IPOs are returning after a prolonged quiet period.
  • Experts predict more adtech IPOs are imminent, especially with SPACs eyeing the sector.
  • Business Insider asked 10 experts to name the adtech companies most likely to IPO in 2021.
  • They named candidates including DoubleVerify, Taboola, and IronSource, though not all are necessarily in the process of going public.
  • Visit Business Insider’s homepage for more stories.

Adtech IPOs are back in fashion again.

The sector has benefited from COVID-accelerated trends, such as the shift to digital content consumption and e-commerce and the wider stock market rally. Adtech stocks are undergoing a resurgence, led by The Trade Desk with a market capitalization of $45.6 billion in December.

Supply-side platform Pubmatic went public this December. MediaAlpha, an adtech company that focuses on the insurance sector, had its IPO in October. Kubient, which offers adtech tools including a fraud prevention service, debuted on the Nasdaq in August. 

Special-purpose acquisition companies are also said to be circling the space, which could ease more mature adtech companies’ path to IPO. 

Read more: Wall Street is in love with digital ad stocks again — but investors could be missing a big blind spot

“230 SPACs have raised over $70 billion [this year] — let’s see where that gets deployed,” said David Ethridge, PwC deals managing director and US IPO services leader. “There may be earlier-stage exists by way of a SPAC than previously thought versus traditional IPOs.”

Business Insider spoke to 10 adtech experts, including executives, consultants, analysts and bankers, who named seven adtech companies they think are most likely to IPO in the coming months. The list, in alphabetical order, is speculative and not all of these companies are in a process to go public.

Stock Market DoubleVerify

Stock Market Mark Zagorski, CEO, DoubleVerify DoubleVerify CEO Mark Zagorski.


Total funding: $549.5 million, according to CrunchBase; Providence Equity Partners acquired a majority stake in 2017 at an undisclosed sum.

DoubleVerify is seen by experts as the most likely to go public, with plenty of signs pointing to an imminent IPO.

Founded in 2008, DoubleVerify helps advertisers, publishers and big platforms measure their ads and confirm if their campaigns were served into “brand safe” environments. 

New CEO Mark Zagorski previously led publicly-traded adtech company Telaria, which recently merged with fellow public adtech company Rubicon Project. In October, DoubleVerify raised a $350 million funding round, led by investment firm Tiger Global Management. 

Bloomberg reported in October DoubleVerify was looking to raise at least $500 million in an early 2021 IPO at a $5 billion valuation. A person with direct knowledge of the matter told Business Insider the company had selected JP Morgan to lead the process, which is expected imminently. DoubleVerify and JP Morgan declined to comment.

Experts described DoubleVerify as a solid business with room to grow, given its recent expansion into detecting fraud in connected TV.

“It’s a cashflow machine,” said Shawn Riegsecker, CEO of adtech company Centro.

Stock Market Iponweb

Stock Market IPONWEB Boris Mouzykantskii Iponweb founder and CEO Boris Mouzykantskii.


Total funding: No external funding to date.

Experts named Iponweb as a prime candidate to go public, even if more out of curiosity than certainty.

“Iponweb is one of the largest and most mature ad tech companies very few have heard of,” said Centro’s Riegsecker. “A lot of people will be surprised at how big they are.”

Founded by “the Godfather of adtech” Boris Mouzykantskii in 2001, Iponweb builds tech infrastructure for adtech companies, advertisers, agencies, publishers and TV broadcasters. The company also owns BidSwitch, a programmatic exchange. 

“Iponweb should go public,” said Ciaran O’Kane CEO at WireCorp, which owns the ExchangeWire adtech publication and events company. “Their numbers are just as good as Pubmatic’s — it’s a great company, great tech, and they could go public on their tech-infrastructure focus.”

Michael Rasmussen, Iponweb’s VP of global marketing, said the company has no plans to IPO.

“Being independent has always allowed Iponweb to remain nimble, experimental, and fast-moving, which we think will be even more critical as programmatic adoption continues to grow, and advanced media buyers and sellers increasingly look to unlock differentiation and competitive advantage in advertising through technology news innovation,” Rasmussen said.

Stock Market IronSource

Stock Market Tomer Bar Zeev IronSource co-founder and CEO Tomer Bar Zeev.

Courtesy of Tomer Bar Zeev

Total funding: $555 million, according to Crunchbase

Israel-based IronSource operates in the highly competitive and lucrative mobile gaming space, offering developers adtech to help them monetize their games and find new users.

Israel-based financial newspaper Calcalist reported in November that IronSource was preparing for “the biggest IPO in Israeli history” on the Nasdaq in early 2021 and targeting a valuation between $7 billion and $8 billion.

IronSource’s annual profit is reportedly around $170 million, according to Calcalist. Its last investment round — when private equity firm CVC Capital Partners injected $450 million for a 25.7% stake in the firm — valued the company at $1.75 billion.

Octavius Mihaies, partner at investment firm Access Capital Partners, gave three key reasons IronSource is a strong IPO candidate: “The fact that it’s a [tech company] with a clearly competitive in-app solution; it’s focused on the holy grail that is monetization; and it’s about gaming … an area [that is] pretty hot with respect to capital markets.”

An IronSource spokesperson said the company doesn’t comment on rumors.

Stock Market Taboola

Stock Market Taboola Founder and CEO Adam Singolda. Taboola founder and CEO Adam Singolda.


Total funding: $160 million

Best known for placing the “content you may like” widgets at the bottom of World News articles and home pages, Israel-founded Taboola is the largest player in the content-recommendation space. 

In 2019, the company had announced plans to merge with rival content-recommendation firm Outbrain to generate more than $2 billion in gross annual revenue. The plan fell apart in 2020.

At the time, Taboola CEO Adam Singolda told staff in a memo that the company would look toward “our path to IPO with our capital and shares,” Digiday reported.

In December, Israeli titles Calcalist, Haaretz and its business publication TheMarker reported that Taboola was in talks with ION Acquisition Corp, a SPAC that raised $259 million in its 2020 IPO on the New York Stock Exchange and is seeking a Israel-based tech unicorn for a merger. 

Taboola declined to comment.

Stock Market White Ops

Stock Market Tamer Hassan white ops White Ops CEO and co-founder Tamer Hassan.

White Ops

Total Funding: Acquired by Goldman Sachs’ Merchant Banking Division, ClearSky Security and NightDragon in December 2020 for an undisclosed sum. Prior to Goldman’s initial investment in May, White Ops had raised $33 million.

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Founded in 2012, White Ops helps companies avoid digital ad fraud, where scammers use methods like bots to create fake human web traffic. The company has expanded to other areas such as application security and music streaming.

White Ops was acquired in December by Goldman Sachs’ Merchant Banking Division, with additional investment from ClearSky Security and NightDragon. Industry observers say the investment and hiring of five new leaders suggest that White Ops could be preparing to IPO.

White Ops CEO and co-founder Tamer Hassan told Business Insider the option to go public is “certainly on the table” and that its investors enhance its ability to do so.

Experts predicted White Ops will be looking to make acquisitions and roll-up the anti-fraud and verification space, a strategy that would be boosted by an IPO. 

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