Why Is ANTERIX INC (ATEX) Stock Moving Today?

Anterix Inc. (NASDAQ: ATEX) rose 7.85% to $83.03 in morning trading on September 21, 2026, driven by news that Apple’s new iPhone 18 Pro and iPhone Duo models are the first Apple devices to operate on Anterix’s 900 MHz private LTE networks. The company emphasized that this compatibility with Band 106 spectrum positions it to benefit from growing demand for mission-critical private wireless networks.

What Happened

Anterix announced that the iPhone 18 Pro and iPhone Duo can now operate on its 900 MHz private LTE spectrum, a first for Apple devices. The company highlighted that this development expands the use cases for its Band 106 spectrum, which is designed for secure, low-latency communications in industries such as energy, defense, and transportation. The news came as the stock opened with a 1.9% gap up from the previous close of $76.99. The session saw a high of $85.06 at 9:40 AM ET, with the stock trading above $82.84 in the last 5-minute bar.

What The Data Shows

The stock’s intraday volume of 0.0M shares was below its 3-month daily average, with volume at 0.1x the norm. The session low of $78.17 occurred early in the morning, while the stock gradually climbed throughout the session. The move pushed ATEX to a 52-week high for the ninth time on the day, with the stock trading within its 52-week range of $17.58 to $113.00. The stock’s fundamentals show a market cap of $1.5B, a P/E ratio of 22.3, and trailing 12-month revenue growth of 18.9%. Recent insider transactions include 9 sell filings totaling $22.7M in the last 90 days.

What To Watch

Anterix has no scheduled earnings report in the near term. Investors should monitor the breadth of coverage and market reaction to the new iPhone compatibility as it unfolds in the coming days.