03/01/2016 03:43 EST | Updated 03/01/2016 03:59 EST

Forbes Billionaires List Ranks Canadian David Thomson (And Family) At Number 25

Forbes has ranked the world's richest people and a few Canadians have made the list.

David Thomson, chairman of Thomson Reuters, and his family sit at number 25 with a net worth of $23.8 billion — a ranking unchanged from last year.

The business magazine comes up with its list by scoring people by their net worth.

david thomson reuters

David Thomson, chairman of Thomson Reuters. (Photo: Norm Betts/Bloomberg via Getty Images)

The Thomson family controls a media company that was started by Roy Thomson, David's grandfather.

Their business is largely carried out through Woodbridge, a holding company, which also contains assets owned by Roy's grandkids and their relatives.

Woodbridge took full ownership of The Globe and Mail last year, after buying out a 15 per cent stake owned by BCE Inc.

David's 2016 net worth marks a drop from the $25.5 billion he was estimated to have last year.

galen weston

W. Galen Weston. (Photo: Nathan Denette/CP)

Galen Weston and family were the next Canadians on the list in 116th place, up from 131st last year.

Weston is the owner of Selfridges Group, a company that owns properties such as luxury retailer Holt Renfrew and Ireland's Brown Thomas.

But he's better known as the executive chairman of George Weston, the Canadian retail and food company his grandfather founded in 1882.

Galen ran grocery stores in Ireland before he took over Loblaws, a Canadian chain owned by his father, in 1972. He redesigned Loblaws stores, closed outlets that weren't performing well, and later passed it on to his own son, Galen, Jr.

Today, Loblaws is one of Canada's most recognizable brands, and it purchased Shoppers Drug Mart in a $12-billion acquisition in 2013.

michael pearson valeant

Michael Pearson, CEO of Valeant Pharmaceuticals. (Photo: Kevin Van Paassen/Bloomberg via Getty Images)

But to Canadian Valeant Pharmaceuticals executive Michael Pearson, the Forbes rankings have been less kind.

The CEO of Laval, Que.-based Valeant Pharmaceuticals was singled out by the magazine as one of 221 billionaires who fell off the list as his company faces a U.S. government investigation in connection with allegations of buying pharma companies then hiking drug prices.

Pearson's return to work after a medical leave was announced Monday — the same day the company admitted it was being investigated by the U.S. Securities and Exchange Commission.

Pearson's fortune has fallen to $480 million, "less than half of what it was in 2015," according to Forbes.

The magazine's top 10 list held a few surprises.

While Microsoft founder Bill Gates maintained the top spot (though his net worth fell by $4.2 billion from 2015), Zara founder Amancio Ortega rose to number two. He was followed by Warren Buffett at number three, and Mexican telecom tycoon Carlos Slim Helu.

Forbes Billionaires List Top 10

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