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yacht Sea Owl

Robert Mercer: Net Worth, House, Private Jet and yacht Sea Owl

Author: Peter Yachtfan, update: 2020-07-28

Sea Owl Yacht

Mercer Boat:

Sea Owl

Yacht Length:

62 m (203 ft)


12 in 6 cabins


18 in 9 cabins




Andrew Winch Designs




16 knots


MTU 16V4000


1,494 ton



Sea Owl Boat Price:

EUR 89 million / US$ 100 million

Sea Owl Yacht For Sale:

Contact a Sales Broker

Sea Owl Yacht Charter:

Contact a Charter Broker

Robert Mercer



Robert Mercer Net Worth:

US$ 500 million


Renaissance Technologies


July 11, 1946


Diana Lynne


Rebekah Mercer, Jennifer Mercer, Heather Sue


Owl’s Nest, Long Island, New York

Private Jet:

Gulfstream. Pls send a message if you have information.

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Our Super Yacht Owners Database: more than 1,100 Yachts and Yacht Owners.

Mercer owns a large house on Long Island, NY, named Owl’s Nest. The yacht is listed for sale, asking EUR 89 million. We think he is building a new yacht.

10 Facts about Robert Mercer you probably didn’t know

  1. He started his career as a computer scientist, working at IBM.
  2. In 1993 he was recruited at Renaissance Technologies. Later he was CEO.
  3. RenTech uses mathematical algorithms to identify trades.
  4. He is one of the Highest Earning Hedge Fund Managers.
  5. He donated millions of dollars to political campaigns.
  6. His net worth is estimated between US$ 500 million and US$ 1 billion.
  7. He lives in a large house named Owl’s Nest.
  8. He has owned several large yachts all named Sea Owl.
  9. He has a large collection of rare fire arms and machine guns.
  10. His daughter Rebekah Mercer runs the Mercer Family Foundation.
Sea Owl

Who is Robert MercerRobert Mercer?

He is co-CEO of the hedge fund Renaissance Technologies. The fund was founded by James Simons. He was born in July 1946. He is married to Diana Lynne Dean and they have three daughters: Jennifer, Rebekah and Heather Sue.

James Simons is the owner of the yacht Archimedes. Mercer is the owner of the yacht Sea Owl.

Renaissance Technologies

Renaissance Technologies is one of the largest quant funds. It use mathematical algorithms and computers to identify trades. Renaissance employs dozens of math and physics doctorate-holders with knowledge of artificial intelligence.

In 2015 the fund had US$ 65 billion in assets and 290 employees.

Earnings per Year

According to Forbes, Mercer earned US$ 125 million in 2016. He earned  US$ 150 million in 2015 and US$ 115 million in 2013. And he earned US$ 90 million in 2012 and US$ 125 million in 2011.

He is one of the highest earning hedge fund managers. Mercer’s career started at IBM. He was working on a speech recognition program. In 1993 he joined Renaissance Technologies. When James Simons retired, Mercer took over as CEO.

Political Donations

Mercer was "the biggest single donor" in the 2016 U.S. presidential race. He donated US$ 14 million to the 2016 presidential campaign of Ted Cruz. And he supported Trump super pac committees.

In total Mercer has donated more than US$ 35 million to political campaigns. Including the Trump campaign.

Mercer is also a major source of funds of Steve Bannon ’s Breitbart News. Which he gave more than US$ 10 million according to the Wall Street Journal.

Robert Mercer Net Worth

He has a net worth of more than US$ 500 million. In this article on Bloomberg his net worth is estimated to be near US$ 1 billion.


He is an active philanthropist. He donated US$ 13.5 million in 2013 through his Mercer Family Foundation. The foundation is run by his daughter Rebekah Mercer. The foundation has US$ 37 million in assets.

The foundation has been giving donations to the National Youth Science Fund. And to the World Science Festival,  the Oregon Institute of Science and Medicine (OISM). And also to the Museum of Natural History in Manhattan, and the Home Depot Foundation.

Machine Gun Collection

Mercer has a large and rare collection of machine guns and historical firearms. He owns a weapon which Arnold Schwarzenegger used in The Terminator.

Rebekah MercerRobert and his daughter Rebekah Mercer

Rebekah Mercer directs the Mercer Family Foundation. She served on the Executive Committee of the transition team of United States President-elect Donald Trump.

She was running Make America Number 1, a pro-Trump super PAC.

Rebekah is married to Sylvain Mirochnikoff. They have four children. Mirochnikoff, a native of France, was a managing director at Morgan Stanley. We estimate the net worth of Rebekah Mercer at US$ 50 million.

Since 2018 Mercer and his daughter Rebekah scaled down support for the GOP and the White House.  He’s no longer playing as big a role in supporting the Republican Party as he used to.

In 2016 he was one of the top 10 political donors, by giving just over $25 million to conservative causes. But he has not donated any funds in 2018. And he sold his stake in Breitbart News, the conservative online news platform.

Mercer Residence

Robert and his wife Diana Mercer own a large house in Head of the Harbour, Long Island, New York. The house is named Owl’s Nest. It has an estimated value of more than US$ 18 million.

Private Jet

We think he also owns a private jet. But we have not yet been able to identify the registration number. Do you know more about a jet owned by Mercer? Please do send us a message.

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sea owl at night

M/Y Sea Owl

The yacht is a 62 meter displacement yacht, built at Feadship. She has a steel hull and an aluminum superstructure. The yacht was delivered in 2013 to her owner by Royal Van Lent.

The yacht is powered by 2 MTU diesel engines. Which bring her a top speed of 16 knots. Her cruise speed is 14 knots. We estimate her range at more than 5,000 nm.


Both her exterior lines and her interior design is done by Andrew Winch Designs. Sea Owl features a jade mist green and oyster white color scheme. It is the same color scheme as the owners’ previous superyacht.


Besides the owners stateroom, the yacht has 3 guest cabins, two kid’s cabins and a nanny cabin. There is even a herb garden.

The luxury yacht has a crew of 18. The owners’ previous yacht was a 43 meter Burger, with the same name. All photos on this page are made by Tom ‘McNikon’ Gulbrandsen.

Yacht Charter

The boat is not available for yacht charter. And she is listed for sale, asking EUR 89 million.

New Yacht

We think Mercer is building a new yacht at Feadship.

Other Yacht

Mercer still owns his previous yacht, a Burger Yacht built in 2010. She is now named Shadowl.

Shadowl is powered by Caterpillar engines, which bring her a top speed of 14 knots. Her design is by Andrew Winch.

She has a similar styling and logo / name plate as Sea Owl.

Our yacht owners database has more info about yachts, the value of yachts, yacht owners, their source of wealth and net worth.

Scroll all the way down for more amazing content!

yacht Sea OwlRobert Mercer yachtSea Owl Royal van Lentsea owl yachtRobert Mercer's yachtSea Owl yacht Robert Mercer

Inside the Yacht

yacht sea owl interiorinterior yacht sea owlherb garden yacht sea owlinside robert mercer yacht

Follow the location of the yacht live!

Sea Owl Yacht - Location

Robert Mercer House

Robert Mercer houseRobert Mercer Long Island

The House Owl’s Nest on Long Island

Mercer Resources









Previous yacht:


yacht shadowl

The Burger Yacht Shadowl (photo by Jelpics).

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