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RBC's top 30 stock picks

A Dollar Tree store location.
Vince Talotta | Getty Images
A Dollar Tree store location.

With the massive economic uncertainty being brought on by the aftermath of Brexit, many investors are unsure of where to put their money, and whether it is safe to invest in the global market.

Read MoreHere's how the market is reading Brexit, experts say

Friday on CNBC's"Power Lunch," Marc Harris, head of global research at RBC, said that the uncertainty is the biggest problem currently facing the U.K and Europe.

"The sheer uncertainty about the process by which the U.K. will leave the E.U. is a dominant factor in assessing the economic outlook. We now forecast 0 percent GDP growth [U.K.]…Although automatic stabilizers in the government sector are likely to be allowed to operate naturally, neither that nor the boon from the exchange rate are expected to offset the drop in business spending or a moderation in private consumption growth."

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Despite this global uncertainty RBC has released its updated list of "Top 30 Global Ideas" for the second half of the year, which includes the names of U.S. stocks, as well as some U.K. based companies like Royal Dutch Shell, Lloyds Banking Group PLC, and Dixons Car Phone.

Harris says the list is, "A compilation of the top investment ideas for the year ahead," and pointed out Aramark, Newell and DollarTree as his top picks from the list.

Harris said these were three companies that have undergone a strong transformation through efficiency, growth, and M&A integration.

RBC'S TOP 30 GLOBAL IDEAS FOR 2016

Agrium

Air Lease Corporation

Alimentation Couche-Tard

Allianz SE

Alphabet

Aramark

Broadcom

Brookfield Asset Management

Canadian National Railway

CBOE Holdings

Cenovus Energy

Dixons Carphone plc

Dollar Tree

Enbridge

Hexagon AB

Incitec Pivot Ltd

Intact Financial

InterXion Holding N.V.

Lloyds Banking Group PLC

Marathon Petroleum

Newell Brands

The PNC Financial Services Group

Royal Dutch Shell, plc

Ryanair Holdings PLC

ServiceNow

Toronto-Dominion Bank

Vinci SA

Whirlpool

Yum! Brands

CNBC's Jennet Chin contributed to this article