System1’s Journey from Brainjuicer to Microcap Target

In 1999, John Kearon founded Brainjuicer, aiming to solve the old adage that half of advertising spend is wasted. The consultancy grew into a mid-sized market research firm with offices in ten countries, harnessing behavioural psychology to assess consumer responses. The breakthrough came in 2016, when the company developed System1—named after Daniel Kahneman’s concept of automatic, unconscious thinking. Rather than measuring how effective ads had been, it claimed to predict their future success by gauging emotional reactions. The market hailed it as a game-changer.

System1’s share price rocketed past £10 in May 2017, but the euphoria was short-lived. Future earnings depended on one-off sales, making revenue lumpy and hard to forecast. This lack of visibility crushed the stock, which slumped to around £2 and has since languished at a market capitalisation of roughly £40 million—wedging the company into microcap territory. Now, with a takeover bid from digital marketing group Brave Bison on the table, the very psychology that once set System1 apart is under the spotlight.

The Limits of Behavioural Psychology as a Business Model

Why System1’s Model Proved Hard to Price

The core tension in System1’s story is that its product, while innovative, generates unpredictable project-based revenue. Advertisers might commission a predictive test for a major campaign, but there is no recurring stream. This makes earnings forecasts notoriously difficult, eroding investor confidence and leaving the board with a share price that fails to reflect the firm’s intellectual property. Any acquirer—like Brave Bison—must weigh whether it can smooth that revenue profile or absorb the lumpiness as part of a broader service offering.

The Behavioural Psychology Moat: Real but Narrow

System1’s methodological edge is real: it taps directly into Kahneman’s System 1 thinking, giving clients a data point that traditional surveys miss. However, the competitive moat is narrow. Large consultancies and ad-tech platforms have incorporated similar emotional measurement tools, and the cost of switching or building an in-house version is low for big brands. The microcap valuation suggests the market does not believe the intellectual property alone can command a premium unless bundled into a larger, more predictable business—exactly what a strategic buyer like Brave Bison might attempt.