In September of 2024 a founder's research note was written, setting out the observation that has since become the founding thesis of the company. The note ran as follows.

There exists in the financial services market a peculiar bifurcation. At one end sits the Bloomberg Terminal, an instrument of formidable capability priced beyond the reach of any individual not employed by an institution. At the other sits a class of consumer brokerage applications which, whatever their virtues, are constructed for the speed of execution rather than the depth of analysis. Between these two poles, in the substantial territory occupied by serious individual investors, wealth managers operating independently, financial advisors, and the long tail of small and mid-sized investment funds, there sits an under-served population.

The available tools at this middle altitude are either thin renderings of Terminal-class capability at Terminal-class prices, or marginal extensions of the consumer brokerage model with little real analytical character. Neither is satisfactory to a reader who is serious about portfolio construction but who has neither the institutional affiliation nor the institutional budget.

There is, in the author's view, an opportunity here. It is not the opportunity to replicate Bloomberg at a discount, which would be a mug's game; it is the opportunity to ask, freshly, what analytical work this audience actually requires, and to build an instrument that performs precisely that work to a standard that the user feels no embarrassment in trusting.

That note, refined and refined again over the following months, became the prospectus for what is now Drusus.