Virtual Fencing Collars Raise $220 Million at a $2 Billion Valuation
Roughly a million solar-powered cattle collars are in service, and US ranchers have set up more than 60,000 miles of virtual fence since the product arrived in 2024.
Halter closed a $220 million Series E at a $2 billion valuation in late March 2026, led by Founders Fund with Blackbird, DCVC, Bond, Bessemer, NewView, Ubiquity, Promus and Icehouse Ventures participating. The company serves more than 2,000 ranchers and farmers across New Zealand, Australia and the United States, with roughly one million solar-powered smart collars sold to date. US ranchers have set up over 60,000 miles of virtual fencing since it entered that market in 2024.
The collars establish GPS boundaries and keep animals inside them using directional sound cues and vibration, driven by the company's control algorithm. Founded in 2016 and headquartered in Auckland, Halter employs over 400 people across three countries. The new capital funds expansion into Ireland and the UK in late 2026 and early entry into Canada, plus roadmap work on animal health monitoring and pasture management.
For an IoT engineer the interesting constraint is that this is a solar-powered, always-on, GNSS-tracking device attached to an animal that will not accept a maintenance schedule. Positioning is the largest power consumer in almost any tracker, and doing it continuously on a harvested budget, outdoors, through winter, in a package that survives being rubbed against a fence post, is a genuinely hard design. The scale is what makes it credible: a million units in service is a long way past the point where a design flaw stays hidden.
The behavioural layer is the second half. A boundary is only useful if the animal learns it, which makes the cue timing and escalation a training problem rather than a control problem, and one where getting it wrong has welfare consequences.
The roadmap item worth watching is the move from containment to health monitoring. A collar already measuring movement continuously is a sensor for lameness, calving and rumination, and that shifts the product from replacing infrastructure to producing per-animal data — a different business, and one where the value depends on whether the analytics are good enough that a farmer changes what they do.
Source: Global Agriculture