Investors often hesitate to purchase a stock after it has experienced a rapid price increase. The temptation to join a surging stock is strong, but so is the worry that the rally has gone too far or that future gains are already reflected in the price.
With the overall market trading near record valuations, many growth stocks currently appear expensive. However, a deeper examination of this year’s top-performing stocks reveals that there are still compelling choices for those seeking to capitalize on major growth trends.
Below are three stocks that have already gained between 46% and 69% this year and still present attractive buying opportunities.
1. Uber Technologies (up 60%)
Uber ( UBER -0.08%) stands as the world’s leading ride-hailing and food delivery platform, and its vast scale gives it a major edge over rivals.
In the second quarter, Uber reported 180 million monthly active users, marking a 15% increase from the previous year. In contrast, its closest competitor, Lyft, saw a 10% rise in active users from a much smaller base. This demonstrates the power of network effects: Uber’s extensive driver and delivery network attracts more users, which then draws even more drivers, restaurants, and retailers to the platform.
Some worry that autonomous vehicles could make Uber obsolete. However, Uber’s large user base and years of experience running a ride-sharing network are highly valuable to self-driving car companies. Uber connects customer demand with vehicle supply, while also handling pricing and fleet logistics. This has led to several partnerships that integrate autonomous vehicles into Uber’s platform.
Uber’s business momentum has led to notable improvements in its EBITDA (earnings before interest, taxes, depreciation, and amortization) margin, which reached 4.5% last quarter, up from 3.9% a year earlier. Overall, earnings per share jumped 34% in the most recent quarter.
Even after a 60% share price increase this year, Uber trades at just over 26 times projected earnings. While this is higher than at the year’s start, the valuation remains reasonable for a company expected to deliver around 30% annual earnings growth over the next few years as it continues to expand margins and grow revenue.
2. Zscaler (up 69%)
As more business computing shifts to the cloud, traditional firewall-based cybersecurity is no longer sufficient. Zscaler ( ZS -0.70%) provides a cloud-native zero-trust security platform that ensures only authorized devices can access critical applications. Its two primary offerings are Zscaler Internet Access (ZIA) for external apps and Zscaler Private Access (ZPA) for internal tools like APIs and databases.
Zscaler is achieving rapid growth by bundling ZIA and ZPA with its other cloud security products. As organizations adopt more cloud-based tools and flexible remote work policies, zero-trust solutions are becoming a preferred security strategy. By the end of July, the company had 350 enterprise customers using its “Zero Trust Everywhere” suite, with plans to add at least 40 more in the coming year.
The company is also experiencing robust demand for its AI-related services, which include securing AI applications and managing access, as well as its own agentic AI operations. Zscaler’s software can prevent prompt injection attacks on large language models and other threats. Its ZDX Copilot agent can rapidly identify, investigate, and resolve security incidents with minimal human input. Management projects that its agentic AI offerings could reach $400 million in annual recurring revenue within a year, representing a substantial portion of its anticipated $3.6 billion ARR.
Zscaler’s revenue climbed 21% year over year last quarter, and its remaining performance obligations—a measure of future business—rose 31%. This indicates a strong pipeline of demand and suggests the company can maintain high revenue growth for the foreseeable future.
Although Zscaler’s shares now trade at an enterprise value to sales ratio of about 13.7, up from 9.9 at the start of the year, the company’s ability to increase the number of modules adopted by customers should drive significant operating income growth, supporting the premium valuation for this growth stock.
3. Taiwan Semiconductor Manufacturing (up 46%)
For the production of the world’s most advanced chips—used in areas like artificial intelligence—every major chip designer turns to Taiwan Semiconductor Manufacturing ( TSM 1.50%), or TSMC. The company’s technological leadership in advanced chip fabrication means that industry giants like Nvidia and Apple rely on TSMC for their top-tier chip designs. As a result, TSMC’s share of the global foundry market has grown to over 70%.
TSMC benefits from a reinforcing cycle: as customers spend more, the company can invest heavily in research, development, and new facilities, maintaining its technological edge and meeting rising demand. Management expects to allocate around $40 billion to capital expenditures this year to keep up with surging orders.
The ongoing expansion of artificial intelligence is set to drive TSMC’s growth for years ahead. Earlier this year, management projected that AI-related chip sales could increase at a 40% compound annual rate through 2029, fueling 20% annual revenue growth for the company. The momentum has continued into 2025, with sales up 37% through August.
Demand for AI chips may also enhance TSMC’s profit margins as it introduces new manufacturing technologies. While TSMC has historically faced margin compression when ramping up new processes, early indications suggest that its N2 node will command higher prices and strong gross margins even as production scales. The same could hold for its upcoming A16 process, which is expected to begin mass production in late 2026.
After a 46% rally this year, TSMC’s stock is valued at more than 28 times analysts’ projected earnings. However, the company has a track record of surpassing expectations and may offer even greater value than current estimates suggest. As a crucial supplier for AI infrastructure, TSMC is well-positioned to sustain strong growth in both revenue and profitability for the long term.