AI Adoption Accelerates Legal and STM Growth, Valuation Remains Compelling

What happened

RELX’s Legal and STM segments are showing accelerating organic growth, driven by broader AI-enabled platform adoption and upselling, as highlighted in a recent Seeking Alpha analysis. This builds on the earlier DeepValue thesis that AI would be a growth driver rather than a disruptor, with Legal revenue growth reaching 10% on expanding user and tool engagement. STM is following a similar path with early AI tool adoption like Scopus AI, supporting multi-year expansion despite slower institutional cycles. The valuation has become even cheaper, reinforcing the buy case after the stock’s decline earlier in 2026. These developments shift the probability distribution toward the bull case, where AI upsell drives sustained high-single-digit growth and margin expansion.

Implication

The accelerating Legal and STM growth confirms that AI is enhancing RELX's subscription model through upsell and workflow integration, not commoditizing it. With the stock trading at a depressed multiple following 2026's AI-fear selloff, the risk/reward now favors upside as operating evidence mounts. Key monitoring points include sustained Legal growth above 7%, buyback follow-through, and any first-time disclosure of AI attach rates, which could catalyze multiple expansion. Conversely, any signs of renewal discounting or AI partnership rollbacks would undermine the thesis. For now, evidence supports a higher probability of the bull scenario where Legal sustains 8-10% growth and margins expand.

Thesis delta

The original thesis assigned a 20% probability to the bull case of 8-10% Legal growth. The new data showing 10% growth driven by AI upselling materially increases that probability, while reducing the bear case of AI-driven disintermediation. The thesis thus shifts from ‘potential buy’ to a higher conviction buy, with upside supported by operational momentum and cheaper valuation.