Halter Raises $220 Million at $2 Billion Valuation to Scale AI-Powered Virtual Fencing for Cattle Worldwide
Halter closes a $220 million Series E led by Founders Fund, doubling its valuation to $2 billion as its AI-powered GPS collars for cattle replace physical fencing across three countries.
Overview
Halter, a New Zealand-founded precision livestock company, has raised $220 million in Series E funding at a $2 billion valuation, the company announced on March 24, 2026. The round was led by Peter Thiel’s Founders Fund, which first backed Halter at the Series A stage in 2017, with participation from Blackbird, DCVC, Bond, Bessemer Venture Partners, NewView, Ubiquity, Promus, and Icehouse Ventures. The raise doubles Halter’s valuation from the approximately $1 billion it reached in its $100 million Series D just nine months earlier, according to Bloomberg.
The capital will fund commercial and field operations expansion across the company’s three existing markets — New Zealand, Australia, and the United States — while opening new ones in Ireland and the United Kingdom later in 2026, according to The Next Web.
How the Technology Works
Halter manufactures solar-powered, GPS-enabled collars for cattle that use audio cues and gentle vibrations to contain and move herds within virtual boundaries set through a smartphone application. At the center of the system is what the company calls the Cowgorithm, a proprietary artificial intelligence engine designed to model how individual animals behave and learn. The AI automatically trains cattle to respond to directional sound cues delivered through the collar, enabling ranchers to shift herds across pastures without breaking ground or stringing wire.
The collars connect to transmission towers installed on farm properties and enable rotational grazing — a practice in which livestock are moved between paddocks in timed intervals to allow pasture recovery. Physical fencing has traditionally been the primary barrier to implementing rotational grazing at scale, requiring significant labor and capital to install and maintain across large properties, according to Global AgInvesting.
Adoption and Market Traction
Halter has now sold one million of its solar-powered collars and serves more than 2,000 farmers and ranchers across New Zealand, Australia, and the United States. Since launching in the U.S. market in 2024, American ranchers have created over 60,000 miles of virtual fencing through the platform, according to The Next Web.
The company operates on a subscription model, charging between $6 and $10 per cow per month plus one-time infrastructure fees. Its estimated annual recurring revenue sits between $70 million and $100 million, according to industry estimates cited by Bloomberg. One investor, Blackbird, has noted that roughly one in ten New Zealand ranches already use Halter, and the company has reported seven consecutive months of zero customer churn.
Growth Plans
Halter plans to hire more than 200 people in its largest-ever recruitment drive, with a focus on product, engineering, and customer-facing roles at its Auckland headquarters and field operations in the U.S. and Australia. Beyond its planned entry into Ireland and the U.K., the company has signaled interest in expanding further across North and South America, according to The Next Web.
The company is also investing in new capabilities beyond virtual fencing, including animal health monitoring and precision pasture management. Founder and CEO Craig Piggott, who operates from Boulder, Colorado, stated that the funding will enable Halter to “reach more ranchers, faster,” adding: “We started Halter because we believed technology could fundamentally change what it means to run a ranch,” according to Global AgInvesting.
Industry Context
The round is among the largest ever raised in the agricultural technology sector. However, the milestone comes with cautionary precedent: only about ten agtech companies have previously reached a $2 billion valuation, and roughly half of those subsequently filed for bankruptcy, according to Bloomberg. Halter’s subscription-based revenue model and reported customer retention figures distinguish it from earlier agtech unicorns that struggled to demonstrate sustainable unit economics.
The system currently works best with herds of 300 or more cattle and requires reliable cellular connectivity, factors that may limit adoption in remote rangeland operations. Whether Halter can maintain its growth trajectory as it enters new geographies with different regulatory environments and farming practices remains to be seen.