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Last week's top-gaining stocks on the TSX were Gatos Silver, Kolibri Global, UEX, Freegold Ventures and Denison Mines.

The S&P/TSX Composite Index (INDEXTSI:OSPTX) closed last Friday (July 15) at 18,391.96.
The index fell on the last day of trading in a week that saw the largest interest rate hike from the Bank of Canada since 1998. The central bank increased rates by 100 basis points on Wednesday (July 13), a move that caught many off guard as expectations were for an increase of 75 basis points.
“It’s great to see central banks finally waking up and trying to get ahead of this,” said Greg Taylor, chief investment officer at Purpose Investments, following the announcement. “This should be looked at as good news, but markets hate surprises and this caught a lot of people off guard.”
The gold price continued its decline last week, falling to the US$1,700 per ounce level on the back of a stronger US dollar. Silver followed gold’s path, trading around the US$18 per ounce mark.
Last week, a number of companies saw their share prices increase, with precious metals and energy stocks making the top performers list. The five TSX-listed mining stocks that saw the biggest gains are as follows:
- Gato Silver (TSX:GATO)
- Kolibri Global (TSX:KEI)
- UEX (TSX:UEX)
- Freegold Ventures (TSX:FVL)
- Denison Mines (TSX:DML)
Here’s a look at those companies and the factors that moved their share prices last week.
1. Gatos Silver
Gatos Silver is a silver-dominant exploration, development and production company that has discovered a new silver- and zinc-rich mineral district in the south of the Mexican state of Chihuahua. Its flagship asset is the Los Gatos district, which includes the Cerro Los Gatos mine.
During the second quarter of 2022, silver production at Cerro Los Gatos increased by 9 percent, and lead and zinc production increased by 5 and 8 percent, respectively, compared to the second quarter of 2021.
The news sent the company's share price up 16.82 percent to hit C$3.89 by the end of the week.
2. Kolibri Global Energy
Kolibri Global Energy is focused on finding and exploiting energy projects in oil, gas and clean and sustainable energy. Through various subsidiaries, the company owns and operates energy properties in the US.
Last week, the company did not release any news, but during the five day period, Kolibri’s share price jumped 14.67 percent to end at C$1.72.
3. UEX
UEX is developing uranium and cobalt deposits in the Athabasca Basin. The company has four flagship projects: the West Bear project, the Christie Lake property, the Horseshoe and Raven deposits and the Shea Creek property.
Last Thursday (July 14), the company kicked off this summer's exploration drilling program at Christie Lake. Last week, UEX’s share price increased 10.94 percent and was trading at C$0.35 by the end of the period.
4. Freegold Ventures
Freegold Ventures is focused on exploring for copper and gold near Fairbanks, Alaska. The company holds the Golden Summit project and the Shorty Creek project.
There was no news from Freegold last week, but the company saw its share price increase 10.67 percent to reach C$0.41 by the end of the trading week.
5. Denison Mines
Another uranium company making the list is Denison Mines, an exploration and development firm with efforts centered on the Athabasca Basin region of Northern Saskatchewan, Canada.
Last Tuesday (July 12), Saskatchewan gave approval for Denison to prepare, construct and operate the facilities required to carry out an in-situ recovery feasibility field test planned for the Phoenix deposit at the company's 95 percent owned Wheeler River project. During the period, Denison shares jumped 10.48 percent to end at C$1.37.
Data for 5 Top Weekly TSX Performers articles is retrieved each Friday at 10:30 a.m. EST using TradingView's stock screener. Only companies with market capitalizations greater than C$50 million prior to the week's gains are included. Companies within the non-energy minerals and energy minerals are considered.
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Securities Disclosure: I, Priscila Barrera, hold no direct investment interest in any company mentioned in this article.
Editorial Disclosure: Freegold Ventures is a client of the Investing News Network. This article is not paid-for content.
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Priscila is originally from Buenos Aires, Argentina, where she earned a BA in Communications at Universidad de San Andres. She moved to Vancouver for the first time in 2010 and fell in love with the city. A few years after she went to London, UK, to study a MA in Journalism at Kingston University and came back in 2016. She enjoys reading, drinking coffee and travelling.
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Investor Insight
Generation Uranium offers investors high-leverage exposure to a potential major discovery in Canada’s underexplored and resource-rich Thelon Basin, led by a management team with a proven track record of securing high-value exits.
Overview
Generation Uranium (CSE:GEN, OTCQB:GENR, FRA:W85) is a Canadian exploration company focused on wealth creation through discovery within the uranium sector. The company’s primary strategy is to build a high-caliber exploration team that can rapidly test and drill high-potential targets, de-risking projects for potential takeover by larger producers. Currently centered in the prolific Thelon and Angikuni Basins of Nunavut, the company is also actively evaluating additional project acquisitions in the Athabasca Basin to expand its portfolio.

The company is led by a veteran management team with nearly 30 years of experience in mineral development. CEO Michael Collins has a significant track record of building and exiting public companies, including the co-founding of Bluerock Resources, a conventional uranium producer during the 2000-2008 cycle. This expertise is paired with a focused business model that leverages modern geophysical targeting to accelerate exploration timelines and reduce costs, ensuring the company can deliver results quickly in a bullish uranium market.
Company Highlights
- Strategic Location in a Premier Uranium District: The flagship Yath Project is located in Nunavut’s Thelon Basin, contiguous to ATHA Energy’s Angilak Project, which hosts the high-grade Lac 50 deposit.
- High-Grade Discovery Potential: Historical surface sampling at the Yath Project has yielded exceptional uranium grades, including boulders testing at 9.81 percent, 3.95 percent, and 2.14 percent U3O8.
- Expert Management with Exit Experience: Led by CEO Michael Collins, the team has decades of experience in mineral exploration and a history of co-founding companies that were later acquired, such as Prime Mining and Nuclear Fuels.
- Low-Cost, Rapid Exploration Strategy: By leveraging modern geophysics and extensive historical data, the company aims for a "short road to discovery," de-risking projects quickly to maximize shareholder value.
- Bullish Market Fundamentals: Generation Uranium is well-positioned to meet the growing global demand for carbon-free nuclear power, supported by a projected supply deficit and increased interest from major tech companies seeking clean energy.
Key Project
Yath Project - Nunavut, Canada
The Yath Project is Generation Uranium’s flagship project. This 100 percent owned property covers about 120 square kilometers within the underexplored Thelon Basin in Nunavut, Canada. The project is located where the Yathkyed and Angikuni sub-basins meet, which is a region known globally for high-grade uranium potential. It sits directly along the same trend as the Angilak Project owned by ATHA Energy (TSXV:SASK, OTCQB:SASFK, FWB:XSU.F), which contains the Lac 50 deposit, one of the highest-grade uranium resources found outside of the Athabasca Basin with a historical mineral resource estimate of 43.3M lbs at an average grade of 0.69 percent U3O8.

The Yath Project is contiguous to the Lac 50 trend and is crossed by several regional faults and basin boundaries. Past exploration work has already identified high priority targets, while surface sampling in the area has produced uranium grades from boulders, with some testing at 9.81 percent, 3.95 percent, and 2.14 percent U3O8.
The company has commenced its initial field program at the site, set to define and rank drill targets. Historic showings will be combined with new anomalies from the MMT geophysics survey, preparing the project for an anticipated drill permit.
Management Team
Michael Collins - CEO & Director
Michael Collins is a professional geoscientist with nearly 30 years of experience in mineral exploration. He has co-founded several public companies, including Exploits Discovery, Prime Mining (acquired in 2025), and Nuclear Fuels (merged with Premier American Uranium in 2025). He is also currently a director of First Atlantic Nickel.
Christoph Bruening - Director
Christoph Bruening is the founder and managing partner of Value Relations GmbH, a full-service investor relations and public relations agency in Frankfurt with over 25 years of excellence, focusing on mining, exploration, biotech and health care. In addition, he has listed over 600 companies on the Frankfurt Stock Exchange and is a speaker and author of several publications, including on rare earths and uranium.
Dallas Miller - Director
Dallas Miller has been working within the international mining industry for over 15 years, working with BHP and Santos Ltd. He has experience on the ground from an operational standpoint, as well as being an integral part of raising millions of dollars in capital funding for both private and public companies in recent years.
Roger Leschuk - VP Corporate Development
Roger Leschuk has been in corporate management for over two decades, with the past 15 years dedicated to corporate development and investor relations. He has experience participating in and assisting with mergers and acquisitions, and was an investment advisor for various services such as stocks, mutual funds and tax-sheltered investments. He is a Chartered Investment Manager and a Fellow of the Canadian Securities Institute.
Monty Sutton - CFO
Monty Sutton brings over 35 years of experience in public markets and corporate governance. He previously served as CFO for Nuclear Fuels from its IPO through its acquisition.
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Priscila is originally from Buenos Aires, Argentina, where she earned a BA in Communications at Universidad de San Andres. She moved to Vancouver for the first time in 2010 and fell in love with the city. A few years after she went to London, UK, to study a MA in Journalism at Kingston University and came back in 2016. She enjoys reading, drinking coffee and travelling.
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