Charter’s CFO says cost synergies from Cox will exceed $1B

  • Charter recently merged with Cox Communications
  • The company has now raised its cost synergy estimates related to the merger from $800M to more than $1B
  • But both Charter and fellow cable operator Comcast are facing more competition than they ever have before

Charter’s CFO Jessica Fischer is leaving the company on October 15 to become the founding CFO of a new Blackstone–Google joint venture called Crux AI, which will be focused on AI infrastructure.

But still representing Charter, Fischer spoke last week at Citi's 2026 Global TMT Conference.

She was asked about the cost synergies that Charter expects from its recent acquisitions of Cox Communications and Liberty Broadband.

Previously, the company expected cost synergies from the Cox acquisition of about $800 million, but at Citi, Fischer said, “The confidence that we have in the synergies that will come from the transaction, I'd say, has increased dramatically as we've sort of dug in further. And so we've raised our synergy target to more than $1 billion.”

New Street Research analyst Vikash Harlalka said, “These synergies are just a result of Charter taking out duplicative costs and moving Cox onto their cost structure. It doesn’t include any operating synergies resulting from faster business growth (selling more video, mobile, B2B services, etc.). Those are hard to quantify and take longer to realize. We think transaction synergies of ‘over’ $1BN are reasonable.”

Fischer said, “I actually think that there's a big chunk of the synergies that come very quickly. So you get to a run rate like something on the order of half, probably in a very, very short time frame.”

She said there’s a lot of opportunity, whether it's around organizational structure and overhead or from contracts and operating efficiencies.

The competitive environment

The competitive environment is rough for both Charter and Comcast. Executives from both companies routinely mention the intense new competition from fiber broadband, fixed wireless access (FWA) and satellite.

Fischer said, “There are ebbs and flows as to which competitor is out there being more competitive and who has sort of backed off of offers. But the overall space hasn't changed. It continues to be a competitive space.”

She said Charter’s “key competitor” is going to be fiber broadband in the long-run because it’s a wired network with high speeds and low latency.

“On the fixed wireless side, are there customers who are satisfied with fixed wireless today? Yes,” she said. “But does it have the same speed or the same reliability of a wired connection? It doesn't. And will it be capacity constrained at some point in the future? I think it probably will.”

As far as satellite, she said it’s served a good purpose in bringing connectivity to previously unserved rural areas. And she also noted that it’s harder to pull satellite customers back to Charter than it was to pull DSL customers to Charter.

In terms of satellite she said, “I don't discount someone who is well funded and has a lot of really smart people working for them. And so we continue to monitor the situation with satellite. But ultimately, from a technology perspective, it certainly feels like the right technology to prevail is wired technology.”

To sum up the competition that cable operators such as Charter and Comcast are facing, Wolfe Research analyst Pete Supino wrote that broadband industry competition is expected to intensify over the coming years. “On the demand side, DSL conversions should dry up in 2027 or 2028. On the supply side, fiber construction and promotion should maintain 2026's peak rates, while Starlink supply should multiply. If Starlink cuts service prices to fill up newly deployed capacity, FWA will decelerate, and cable will shrink faster.”

Wolfe Research cut its cable subscriber estimates for both Charter and Comcast. “Our Charter net add estimate drops modestly, since it was already significantly more bearish than consensus,” wrote Supino. “Our Comcast net add estimate falls further, reflecting Comcast’s updated 3Q’26 outlook and reported irrational fiber pricing.”

Read more about Charter and Comcast on Fierce Network

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