Brazil small-cap stock index plunges 30%, largest drop on record

The scale of the move, not just its direction, is the story: a 30% single-session collapse in a small-cap gauge is a liquidity event as much as a sentiment one, and the gap versus the broader benchmarks points to stress concentrated in less liquid names rather than a uniform repricing of Brazilian equities. That distinction matters most for holders of smaller, thinly traded exposure, where exit capacity, not fundamentals, can drive prices. With no stated cause yet, whether this proves an isolated dislocation or the start of broader de-risking is the open question worth watching.