Cox Lost 316,000 Broadband Subs in Q2 – Worse Than Analysts Expected

Cox shed 316,000 broadband subscribers in Q2 2026, a loss rate nearly triple that of legacy Charter and a figure that landed above what New Street Research had modeled for the cable operator now folded into Charter's Spectrum brand.

Roughly eight weeks after the Charter-Cox merger closed, the combined company – rebranded as Spectrum – filed pro forma financials that, for the first time, put hard numbers on Cox's recent deterioration. The figures show losses accelerating: Cox lost 289,000 broadband subs in Q1 2026 and 238,000 in the year-ago quarter, meaning Q2's 316,000 was the worst of the three periods disclosed.

For context, legacy Charter – a much larger operator – lost 172,000 broadband subs in Q2 2026 and 120,000 in Q1 2026.

How bad is the gap?

On a year-over-year basis, Cox's broadband base declined 5.2% in Q2, versus a 1.8% decline for legacy Charter.

"The subscriber metrics [at Cox] aren't pretty, but we all knew that. Broadband subscriber losses are slightly higher than we expected," New Street Research analyst Vikash Harlalka wrote in his analysis of the filing. "The y/y change in Cox's broadband subscriber base is nearly 3x legacy Charter."

Harlalka offered a partial explanation for the disparity: pricing. Broadband ARPU in the former Cox markets has trended down to about $86 in recent quarters, while Charter's ARPU – which has been rising – sat in the $68 to $70 range over the same period. A gap of roughly $16 to $18 per month per subscriber gives fixed wireless and fiber rivals considerably more room to undercut Cox.

Revenue tells a similar story. The pro forma filing, which reaches back to Q1 2024, shows Cox revenues declining about 4% across the periods presented, against an average decline of 1% for legacy Charter.

What about the mobile business?

The filing also lays bare the gap between the two companies' mobile arms. Cox, which launched Cox Mobile across its footprint in early 2023, added 33,000 mobile lines in Q1 2026 to reach 400,000 total. Legacy Charter added 406,000 lines in the same quarter – more than twelve times Cox's gross additions – extending Spectrum Mobile to 12.54 million lines. The pro forma company ended Q2 with 12.94 million mobile lines.

Mobile has been cable's principal growth engine as broadband erodes, which makes Cox's thin line count one of the more obvious targets for the combined company's convergence playbook.

Can Spectrum's playbook fix Cox's markets?

It is too early to say. Spectrum has begun extending Charter's pricing and packaging into the former Cox territories, and CEO Chris Winfrey told an investor conference in September that the company saw a "sales uplift" in those markets ahead of the Spectrum branding overhaul and the launch of new products – including a free Spectrum Mobile line for a year. He offered no specific figures, and a claimed uplift ahead of a rebrand is the kind of claim that Q3 results will need to substantiate.

Those results arrive November 6, when Spectrum reports Q3 2026.

The turnaround burden falls heavily on new COO Nick Jeffery, who previously led recoveries at Frontier Communications and Vodafone UK. Jeffery has already installed what he calls a "simpler, flatter, operating structure" as he pushes the company back toward broadband subscriber growth, better net promoter scores and what he has branded "The Great Cable Comeback.""

Harlalka wrote that the data indicates "Charter can teach Cox some new tricks," while cautioning that Jeffery "has his work cut out" for him.

"Given his track record at Frontier, we would be surprised if he doesn't have at least some impact on these trends" in the former Cox markets, the analyst added. Spectrum has not detailed what further changes Jeffery plans, so the November 6 report will offer the first real test of whether the Charter playbook – and the free-line promotion – can slow the losses.