Ten stocks capped off the trading week, boasting whopping gains—with one notably more-than-doubling its share price—as investors cheered a flurry of company-specific developments that sparked buying appetite.
The stocks outperformed a sluggish performance on Wall Street, with both the Dow Jones and the tech-heavy Nasdaq down by 0.19 percent week-on-week. The S&P 500, on the other hand, dipped by 0.10 percent.
In this article, we name the 10 best-performing stocks week-on-week and detail the reasons behind their gains.
The stocks were chosen based on the percentage change in their closing prices between August 22 and 29, 2025.
To come up with the list, we considered the stocks with at least $2 billion in market capitalization and 5 million shares in trading volume.
A stock market trader. Photo by Tima Miroshnichenko on Pexels
10. Confluent Inc. (NASDAQ:CFLT)
Shares of Confluent Inc. (NASDAQ:CFLT) jumped by 11.6 percent week-on-week, with sentiment primarily bolstered by a broader market optimism over the increased possibility of an interest rate cut, while investors digested one of its counterparts’ impressive earnings performance.
During the past trading week, climbed by as much as 14 percent before trimming gains toward the end of Friday’s session, after its data analytics peer, MongoDB (NASDAQ:MDB) said it was able to narrow its net loss by 13.76 percent to $47 million from $54.5 million in the same period last year, on the back of a 23.7-percent increase in revenues to $591 million from $478 million.
MongoDB’s (NASDAQ:MDB) optimistic results spilled over to stocks of data analytics companies, on expectations of strong demand for their business models.
In other news, Confluent Inc. (NASDAQ:CFLT) said that its management is set to present at the Goldman Sachs Communacopia + Technology Conference on September 8, at 1 PM Eastern Time. Investors will closely watch out for cues from the company on business plans and outlooks.
9. Ambarella, Inc. (NASDAQ:AMBA)
Ambarella saw its share prices grow by 14.65 percent week-on-week to hit a new all-time high as investors cheered its highly optimistic outlook for the full fiscal period, supported by a stellar earnings performance in the second quarter.
On Friday alone, the company jumped as high as 32 percent to hit a new 52-week record high of $93.44, before trimming gains to end the day just up by 16.78 percent at $82.48 apiece.
In its updated report, Ambarella, Inc. (NASDAQ:AMBA) raised its full-year revenue growth outlook to a range of 31 to 35 percent to a midpoint of $379 million, as it expected a strong secular growth in the edge AI market. This compares with a 19 to 25 percent revenue growth outlook targeted previously.
“A variety of portable AI video applications have reached production status, and by the end of fiscal 2026, we expect to realize production shipments from our first robotic aerial drone win,” said Ambarella, Inc. (NASDAQ:AMBA) President and CEO Fermi Wang.
For the third quarter alone, Ambarella, Inc. (NASDAQ:AMBA) said it was targeting revenues between $100 million and $108 million.
On a year-on-year basis, the revenue midpoints for both the third quarter and the full fiscal period of 2026 would represent all-time records.
In the second quarter, the company narrowed its net loss by 42.69 percent to $19.99 million from $34.89 million in the same period last year. Revenues jumped by 49.9 percent to $95.5 million from $63.7 million year-on-year.
8. Cipher Mining Inc. (NASDAQ:CIFR)
Shares of Cipher Mining jumped by 19.7 percent week-on-week to reach a new all-time high, as investor sentiment continued to be fueled by growing interest in cryptocurrencies.
On Friday alone, Cipher Mining Inc. (NASDAQ:CIFR) soared to a new all-time high of $8.71, marking a 36.5-percent jump in just the past five trading days alone, before trimming gains to end at $7.64.
This followed a flurry of positive developments in the sector, including wider adoption of Bitcoin and other cryptocurrencies, as evidenced by the growing number of treasuries, supported by the government’s recently passed regulatory frameworks.
Adding to the momentum, while not directly tied to Cipher Mining Inc. (NASDAQ:CIFR), was news that President Donald Trump’s sons recently formed a new Bitcoin mining company to position themselves in the booming digital asset space.
In recent news, Cipher Mining Inc. (NASDAQ:CIFR) earned a “buy” recommendation from investment firm Canaccord with a higher price target of $9. Even with the week-on-week jump, the new price target still marked a 17.8-percent upside from Friday’s closing price.
7. Snowflake Inc. (NYSE:SNOW)
Snowflake Inc. saw its share prices climb by 21.26 percent week-on-week as investor sentiment was boosted by an impressive earnings performance in the second quarter and a highly optimistic growth outlook heading into the third quarter.
In its financial statement, Snowflake Inc. (NYSE:SNOW) said it narrowed its attributable net loss by 6 percent to $298 million from $317 million in the same period last year. Revenues jumped by 32 percent to $1.14 billion from $868.8 million year-on-year on the back of strong product revenues.
“Thousands of customers are betting their business on Snowflake and more than 6,100 accounts are using Snowflake’s AI every week. Customers love that our platform is easy to use, connected to enable fluid access to data wherever it sits, and trusted by companies of all sizes and industries. We have an enormous opportunity ahead as we continue to empower every enterprise to achieve its full potential through data and AI,” said Snowflake Inc. (NYSE:SNOW) CEO Sridhar Ramaswamy.
For the third quarter of the year, the company expects product revenues to grow by 25 to 26 percent to $1.125 billion to $1.13 billion, and by 27 percent to $4.395 billion in the full fiscal year of 2026.
6. IREN Limited (NASDAQ:IREN)
Shares of IREN Ltd. increased by 23.56 percent week-on-week, to touch a new all-time high, as investors cheered its stellar earnings performance and addition to Nvidia Corp.’s list of preferred partners.
On Friday alone, IREN Limited (NASDAQ:IREN) soared to a new 52-week high of $29.5, or 28 percent higher than its previous close, before trimming gains to end the day just up by 14.93 percent at $26.48 apiece.
This followed its swing to profitability, recording $86.9 million in the full fiscal period of 2025, reversing a $28.9 million net loss a year earlier.
Total revenues expanded by 167.6 percent to $501 million from $187.2 million year-on-year, with Bitcoin mining contributing the largest chunk, at $484.6 million, or 163 percent higher than the $184.1 million a year ago.
Revenues from AI cloud services, on the other hand, surged by 429 percent to $16.4 million from $3.1 million in the same comparable period.
In another development, IREN Limited (NASDAQ:IREN) said it secured a Preferred Partner status from Nvidia Corp. following the procurement of 1,200 air-cooled B300 chips and 1,200 GB300s for approximately $168 million. This effectively expanded its GPU fleet to 10,900 NVIDIA GPUs.
5. Polestar Automotive Holding UK PLC (NASDAQ:PSNY)
Polestar Automotive soared by 25.69 percent week-on-week, as investors repositioned portfolios ahead of the release of its earnings performance in the first half of the year.
According to the company, it is scheduled to announce its financial and operating highlights for the second quarter on Wednesday, September 3, before market open. An investor call will be held at 8 AM Eastern Time to elaborate on the results.
Already, Polestar Automotive Holding UK PLC (NASDAQ:PSNY) hinted at a strong second quarter despite global trade uncertainties, after achieving a 38-percent growth in retail sales volume at 18,049 units versus the 13,072 in the same comparable period.
The total figure bolstered its first half retail sales volume by 51 percent to 30,319 from 20,047 year-on-year.
“Volume growth of 38% in the second quarter and 51 percent in the first half of the year is a clear sign that our retail expansion is delivering and that more customers are choosing Polestar,” Polestar Automotive Holding UK PLC (NASDAQ:PSNY) CEO Michael Lohscheller said earlier.
4. Pure Storage, Inc. (NYSE:PSTG)
Pure Storage jumped by 33.05 percent week-on-week to touch a new all-time high as investor sentiment was fueled by its growth outlook and earnings performance, as it began realizing revenues from its partnership with Meta Platforms Inc.
In Friday’s session alone, Pure Storage, Inc. (NYSE:PSTG) soared to a new 52-week high of $80.68, marking a 38.3-percent jump in just the past five trading days of the week, after reporting a 32-percent jump in net income in the second quarter at $47 million from $35.67 million year-on-year. Revenues, on the other hand, grew 12.69 percent to $861 million from $764 million year-on-year, with a significant amount coming from revenues from Meta partnership.
“Our relationship with Meta continues to advance,” said Pure Storage, Inc. (NYSE:PSTG) CFO Tarek Robbiati, adding that the company was seeing “increased interest from other hyperscalers” looking to upgrade their traditional storage with its technology.
For the full-year period, Pure Storage, Inc. (NYSE:PSTG) raised its full-year revenue growth outlook to $3.6 billion to $3.63 billion, from $3.515 billion previously. The new figure would mark a 13.5-percent to 14.5-percent growth year-on-year, as compared with the 11 percent targeted earlier.
For the third quarter alone, revenues were targeted at $950 million to $960 million, representing a growth rate of 14.3 percent to 15.5 percent.
3. Wheels Up Experience Inc. (NYSE:UP)
Wheels Up Experience rallied by 35.02 percent week-on-week, as investor sentiment was generally buoyed by the divestment of its three non-core businesses that would rake in millions in cost savings in the future.
On Thursday alone, Wheels Up Experience Inc. (NYSE:UP) touched a new all-time high of $3.5, representing a jump of 62 percent from last week’s close, before trimming gains from profit-taking to end Friday slightly lower.
During the week, the company said it was able to raise $20 million in fresh funds from the sale of Baines Simmons, Kenyon International Emergency Services, and Redline Assured Security to TrustFlight, one of the leading aviation safety and compliance solutions providers.
It said the sale would result in some $50 million in cost savings expectations, and support the company’s strategic focus, investments in products, fleet, and operations, as well as strengthen its balance sheet.
“The sale, along with our recently announced initiatives estimated to drive approximately $50 million of cost efficiencies, is expected to create meaningful tailwinds on our path to sustained, profitable growth,” said company CEO George Mattson.
On Thursday, September 4, Mattson is set to present in person at the Jefferies Industrials Conference in New York, where investors will closely watch out for any cues about Wheels Up Experience Inc.’s (NYSE:UP) business plans and outlooks.
2. MongoDB, Inc. (NASDAQ:MDB)
MongoDB jumped by 44.07 percent week-on-week to touch a near nine-month high as investors gobbled up shares following a strong earnings performance in the second quarter of the year, supported by a higher price target from an investment firm.
On Friday alone, MongoDB, Inc. (NASDAQ:MDB) soared to as high as $321.92, its highest price in nearly nine months, representing a 47-percent jump from its closing price on August 22. The last time MongoDB, Inc. (NASDAQ:MDB) touched the said level was on December 10, 2024, when it hit $323.57.
In an updated report, MongoDB, Inc. (NASDAQ:MDB) said it narrowed its net loss during the period by 13.76 percent to $47 million from $54.5 million in the same period last year. Revenues increased by 23.7 percent to $591 million from $478 million.
In the first half, net loss decreased by 37 percent to $84.67 million from $135 million, while revenues grew by 22.7 percent to $1.14 billion from $929 million in the same comparable period.
Following the results, MongoDB, Inc. (NASDAQ:MDB) earned a higher price target of $265 from Macquarie, versus the $230 previously. However, the investment firm remained neutral on its stock.
According to Macquarie, MongoDB, Inc.’s (NASDAQ:MDB) strategic shift in its go-to-market approach appears to be gaining ground, as it now focuses on strategic accounts and winning higher-quality workloads.
1. EchoStar Corp. (NASDAQ:SATS)
EchoStar Corp. soared by 108.61 percent in just the past five trading days of the week to hit a new all-time high, as investor sentiment was fueled by its $23-billion license sale to AT&T, which helped resolve one of its biggest regulatory challenges that once feared would put the company into bankruptcy.
In Friday’s session, EchoStar Corp. (NASDAQ:SATS) soared to its highest 52-week high of $61.87 before slightly dipping to end at $61.79.
This followed ongoing optimism over announcements earlier this week that it entered into a definitive agreement with AT&T for the sale of its 3.45 GHz and 600 MHz spectrum licenses—a total of 50 MHz of nationwide spectrum—for $23 billion, as part of its steps to settle a dispute with the Federal Communications Commission (FCC).
It can be learned that EchoStar Corp. (NASDAQ:SATS) in May this year said that it was being investigated by the FCC over its compliance obligations to provide 5G service in the US, questioning the former’s buildout extension and mobile satellite service.
The probe pushed EchoStar Corp. (NASDAQ:SATS) to withhold interest payments to its creditors over potential risks that could arise from any outcomes.
The battle even prompted intervention from President Donald Trump, who urged the two parties to reach an amicable deal.
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