October was a rough month for Harmonic Drive, a Japanese precision components maker that's become a bellwether for the robotics industry. Its shares slid 20% as investors digested news that Tesla's humanoid robot, Optimus, won't reach mass production as quickly as hoped. But not everyone is running for the exits—one investor, Russell, says he's holding firm.
What happened?
Tesla, the electric vehicle and humanoid robot maker, said that while production of Optimus has begun, it will take at least another year to reach 20,000 units a month. The company cited tricky technological challenges that still need to be overcome. For a stock like Harmonic Drive, which supplies precision gears used in robots, any delay in the humanoid timeline is a direct hit to its growth narrative.
The news served as a reminder that humanoids—often called the 'holy grail of physical AI'—aren't quite ready for prime time. The technology is advancing, but the road from prototype to mass-market product is longer and bumpier than many hoped.
Why Harmonic Drive matters
Harmonic Drive is a niche player, but its components are critical. The company makes strain wave gears, which are used in robotic joints to provide precise, smooth movement. These gears are found in industrial robots, medical devices, and increasingly in humanoid robots. If humanoids ever become mainstream, Harmonic Drive could be a key supplier.
The stock's recent decline reflects the market's impatience with the pace of the robotics revolution. But Russell's view is that the long-term trend remains intact. 'The robotics revolution might be taking longer than expected, but my long-term view hasn't changed,' he said.
Who's buying?
Russell points to the buying pattern as a reason for optimism. While the stock has fallen, there's evidence that certain investors are accumulating shares. This suggests that some see the dip as a buying opportunity, betting that the humanoid story is a matter of 'when,' not 'if.'
For everyday investors, this is a classic example of the tension between short-term volatility and long-term potential. Stocks tied to emerging technologies often swing wildly on news about timelines and milestones. A single announcement from a major player like Tesla can move the needle significantly.
What it means for investors
If you're considering a stock like Harmonic Drive, it's important to understand the risks. The company's fortunes are tied to the adoption of robotics, which is still in its early stages. Delays are common, and the technology is complex. On the other hand, the potential market is enormous. Humanoids could transform industries from manufacturing to healthcare, and the companies that supply their components could see substantial growth.
Russell's approach—sticking with a long-term thesis despite short-term setbacks—is a common strategy for investors in high-growth sectors. But it's not for everyone. It requires patience and a tolerance for volatility.
For those interested in the broader robotics theme, it's worth watching how other companies in the supply chain are faring. Some stocks have been more resilient, as seen in three stocks that could thrive without a single AI breakthrough. Meanwhile, the recent AI doubts that have weighed on tech stocks show that sentiment can shift quickly.
The bigger picture
The humanoid robot story is part of a larger trend in physical AI—machines that can interact with the physical world. While the timeline keeps slipping, the underlying technology is improving. Companies like Tesla are investing heavily, and that investment is likely to pay off eventually.
For now, Harmonic Drive's stock price reflects the market's skepticism. But for investors like Russell, the dip is just noise. The question is whether the long-term opportunity justifies the wait. As with any emerging technology, there are no guarantees. But for those who believe in the robotics revolution, stocks like Harmonic Drive offer a way to bet on it.
In the meantime, investors should keep an eye on Tesla's progress with Optimus and other robotics developments. Any major milestone could reignite interest in the sector. And as Treasuries prove a safe haven as AI stocks slide, it's clear that risk appetite in tech is fickle.
Russell's faith may be tested again, but for now, he's staying the course. Whether that's a wise move depends on your own investment horizon and risk tolerance.
