In this article, we will discuss: 13 Best Nanotechnology Stocks to Buy Now.

Nanotechnology is defined by the National Nanotechnology Initiative as the control of matter in the range of 1 to 100 nanometers, where materials have characteristics distinct from those of bulk forms. Dr. Tom Cellucci, who collaborated with various U.S. government agencies to obtain $3.9 billion in funding in 2024 to further develop national nanotech capabilities, was the driving force behind the creation of the NNI.

On May 31, 2022, Forbes reported that nanotechnology is becoming more prevalent in a number of industries, with three fields driving its future. These are materials science, nanomedicine, and device engineering.

Forbes claimed that applications of nanotechnology include manufacturing, transportation, electronics, construction, and health. The Department of Energy and the Department of Transportation’s materials science research projects are creating nanoparticles that are tougher and more flexible. Prosthetics, sensors, and aircraft components are being printed using 3D and 4D technology enabled by nanoparticles.

Nanoparticles are being created in nanomedicine for gene sequencing, medication delivery, imaging, and diagnostics. Forbes mentions current research on bioprinting, nanopore gene sequencing technology, and nanobots for precise drug delivery. According to Erik Gatenholm, CEO of CELLINK, fully functional bioprinted organs might be achievable in the next ten years.

Nanotechnology also contributes to healthcare safety applications. Under the direction of Dr. Mark Banash, JP Industries International is creating water treatment solutions and improved PPE coatings as well as nanotech-based antiviral, antibacterial, and antifungal defense systems.

Forbes also reported on developments in wearables and electronics powered by nanoscale materials in the field of device engineering. Innovations in nanowire-based electronics,  graphene transistors, flexible displays, photonic circuits, carbon nanotube chips, nanoscale memory, and nano-enabled LEDs and lasers are among the research findings from institutions like Harvard, University of Michigan, NIST, UC Berkeley, Stanford, Caltech, RMIT, and Georgia Tech.

With that said, here are the 13 Best Nanotechnology Stocks to Buy Now.

Our Methodology

To compile our list of the 13 Best Nanotechnology Stocks to Buy Now, we utilized online screeners to generate an initial list of all U.S.-listed companies that develop or use nanotechnology. From this pool, we looked for stocks with the best hedge fund holdings, which we assessed using Insider Monkey’s database of hedge funds as of Q3 2025. Finally, we ranked these stocks in ascending order based on hedge funds.

Why are we interested in the stocks that hedge funds pile into? The reason is simple: our research has shown that we can outperform the market by imitating the top stock picks of the best hedge funds. Our quarterly newsletter’s strategy selects 14 small-cap and large-cap stocks every quarter and has returned 373.4% since May 2014, beating its benchmark by 218 percentage points (see more details here).

13. ACM Research, Inc. (NASDAQ:ACMR) 

Number of Hedge Fund Holders: 28

ACM Research, Inc. (NASDAQ:ACMR) is among the Best Nanotechnology Stocks.

Analysts are optimistic about ACM Research, Inc. (NASDAQ:ACMR), with 88% of the 8 covering analysts rating it as a Buy.

On November 19, 2025, ACM Research, Inc. (NASDAQ:ACMR) stated that it had delivered its first Ultra Lith Baker system to a major global manufacturer of display panels. The technology tackles advanced lithography issues such as critical dimension fluctuation and thermal drift.

The Ultra Lith Baker system has precise temperature control and UV curing with ±5% intensity consistency. Its heat management architecture lowers overlay error, pattern distortion, and key dimension variation for better yield and process reliability. It also supports line-scan and hybrid exposure modes.

According to Dr. David Wang, President and CEO of ACM Research, Inc. (NASDAQ:ACMR), the deployment is the first customer installation of the Track series and represents the company’s debut into the high-volume manufacturing segment of display panel customers. Customers may grow production for future technology nodes using the system’s flexible architecture and different exposure modes.

ACM Research, Inc. (NASDAQ:ACMR)’s 2025 guidance was reduced from a range of $850M-$950M to $875M- $925M, keeping the growth rate at the midpoint as AI-fueled demand accelerates product innovation

ACM Research, Inc. (NASDAQ:ACMR) provides advanced capital equipment designed for the global semiconductor industry.

12. OSI Systems, Inc. (NASDAQ:OSIS) 

Number of Hedge Fund Holders: 30

OSI Systems, Inc. (NASDAQ:OSIS) is among the Best Nanotechnology Stocks.

On December 1, 2025, Roth Capital’s Analyst Jeff Martin increased OSI Systems, Inc. (NASDAQ:OSIS)’s price target from $280 to $292 with a Buy rating, according to The Fly.

Analyst Jeff Martin mentioned a solid pipeline for FY27 and FY28, as well as great growth visibility for FY26. Roth Capital identified significant budget expansion for US Customs and Border Protection, as well as possible RF technology contract prospects related to Golden Dome, as important drivers of OSI Systems, Inc. (NASDAQ:OSIS)’ large contract potential.

OSI Systems, Inc. (NASDAQ:OSIS) momentum remains solid, backed by its security business and growing backlog, with regular revenue streams ensuring stability. The projection for non-GAAP adjusted profits per diluted share was increased by the company to a range of $10.20 to $10.48, which represents 9% to 12% year-over-year growth.

The Fly previously reported on November 24, 2025, that an international customer placed an order for a radiological threat detection system worth about $20 million with OSI Systems, Inc. (NASDAQ:OSIS)’s security business. According to the firm, the deployment would create a fully integrated radiation monitoring network that would cover a large region and run continuously to identify, monitor, and assist in resolving radioactive concerns.

OSI Systems, Inc. (NASDAQ:OSIS) designs and produces electronic systems and parts for companies in the aerospace, healthcare, defense, and homeland security industries.