Samanth Subramanian on the Undersea Cables That Keep the Internet Alive | Odd Lots

The article highlights that undersea fiber-optic cables remain the backbone of the internet, but they are vulnerable to disruption from events like the 2022 Tonga volcanic eruption. It emphasizes how cable routing depends on chokepoints such as the Strait of Hormuz and the Suez Canal, underscoring the strategic and physical fragility of global digital infrastructure. The piece is informational rather than market-specific, with limited direct price impact.

Analysis

The undersea cable stack is a quiet underwriting business disguised as a geopolitics trade. The biggest second-order winner is not the cable owners themselves but the adjacent ecosystem that gets paid every time operators harden routes, add redundancy, or reroute around chokepoints: specialized marine survey, cable-laying vessels, optical gear, network security, and satellite fallback. If policymakers treat subsea links as critical infrastructure in the way they treated energy grids post-2022, capex intensity can step up for years without a visible headline catalyst.

The market is likely underestimating how a single cable disruption can propagate into higher latency, worse cloud service quality, and regional pricing dislocations rather than a simple binary outage story. That matters most for hyperscalers and large enterprise networks with heavy Asia-Middle East-Europe traffic, where the real risk is not downtime but degraded user experience that quietly shifts enterprise spend toward diversified routing and backup connectivity. The beneficiaries are companies that monetize resiliency and network orchestration, while the losers are operators and cloud platforms with concentrated exposure to constrained maritime corridors.

The key catalyst set is geopolitical, not technical: tension around the Strait of Hormuz, Suez, Red Sea, and other choke points can translate into a rolling premium on redundancy spending over the next 6-24 months. A tail event would be a multi-cable incident in a single region, which could force emergency government coordination and accelerate procurement, but the more likely path is incremental budget creep rather than a one-time surge. The contrarian view is that the market may be overpricing the headline risk of catastrophic outage while underpricing the durable margin expansion for firms selling ‘network resilience as a service.’

Key Decisions for Investors

• Long C3.ai? No — prefer higher-quality names: initiate a basket long in LMT/RTX on a 6-12 month horizon only if defense budgets begin to explicitly include subsea infrastructure protection; asymmetry is moderate, but pure defense is an indirect beneficiary and needs policy confirmation.
• Long EME or other marine engineering / infrastructure services proxies on any pullback; thesis is a 12-24 month capex cycle as telecom carriers pay up for route diversity and repair readiness, with better operating leverage than the carriers themselves.
• Pair trade: long cloud-network resilience beneficiaries vs short single-route exposed telecoms. Best expression is long AMT/CCI as terrestrial backhaul and edge redundancy proxies, short a basket of regional carriers with concentrated transoceanic dependence; 6-18 month horizon, catalyst is recurring geopolitical noise.
• Buy out-of-the-money calls on satellite connectivity proxies if available as a convex hedge against a multi-cable disruption event over the next 3-9 months; limited premium outlay, high payoff if a regional outage forces emergency backup demand.
• Avoid shorting hyperscalers outright; instead, hedge via relative underweights vs companies with diversified networking and security spend. The better trade is to own resiliency spend, not bet on a broad internet outage that is too hard to time.