Watching the story form: streaming topics in FinanViz
Markets move on narratives before they move on numbers. FinanViz tries to show a narrative the moment it starts to gather.
A feed of financial news is a firehose of individual headlines, but the thing that actually moves a market is a theme — a story that swells across many articles until it tips into action. FinanViz mines that stream for emerging topics and draws them as flowing bands, so you watch attention concentrate in real time.
The hard part is “emerging”
Showing topics that already exist is easy. Showing a topic as it forms — when it is still small and noisy — is the real challenge. The visualization has to make the derivative legible: not “how big is this theme” but “how fast is it growing right now.” A band that is thin but accelerating should draw the eye more than a fat, stagnant one.
A lesson that generalizes
FinanViz was my first real move from signal processing into text-driven, large-scale analytics — but the core idea followed me everywhere after: the shape of change is usually more useful than the current state. It is the same instinct behind TimeRadar. Whether the data is communities, system health, or headlines, the question is the same — what is moving, and which way?
Don’t just show what is. Show what is becoming.
