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The banks leave the stage, with no heir — the exit that became a year-long decline

Episode

The extreme

For months the financial sector was the Brazilian index's silent mainstay: when the rest faltered, the banks held the structure up. In mid-2024 that anchor let go — and the detail that holds the attention was not the exit itself, but the void it left behind. Capital abandoned the predictability of the big banks without choosing another table to bet on. It was not rotation; it was dispersion: it pulled the chips and did not put them back. In numbers: the Finance/IBOV ratio collapsed from a z of +0.78 to −0.29, more than one standard deviation in a single month, while the candidates to inherit the role stayed nailed to the floor — cyclicals at −2.03, commodities in real terms running out of breath (from +1.60 to +1.13). Aggregate risk appetite, going the other way, rose from 0.0 to 37.9. Selic at 10.5%, the dollar at R$5.39, debt-to-GDP at 76.68%.

What happened next

The empty chair stayed empty — and the exit became a decline. Three months later, in September 2024, the two domestic axes plunged together (risk appetite from 64.0 to 27.2) and finance, far from stabilizing, sank even further against the index, from a z of −1.11 to −1.69. No heir appeared: it was commodities, not the banks, that attempted a relative recovery. In December 2024 the entire microstructure turned strongly risk-on (intermarket from 35.9 to 100.0) and Finance recovered half of its discount (−2.24 to −1.08) — but the street was boiling, with the dollar at R$6.097. The banking relief was a mirage: in May 2025 the Finance/IBOV ratio collapsed to its absolute floor, a z of −3.18.

What did not happen

The exit was not followed by an orderly rotation — no sector inherited the leading role, exactly as the orphanhood of the numbers suggested. Nor was it a bottom. Anyone reading the −0.29 as "everything that had to fall has already fallen" would have misjudged the size: the banks' worst was still nearly a year ahead, three standard deviations below the mean. The appetite that climbed to 37.9 sustained nothing — it slipped back to 27.2 in three months.

The honest verdict

The reading got the diagnosis right — an exit with no heir is, by definition, hardly discriminating — and the method classified the month as ambiguous. Six months later, the outcome confirmed it: a return of −3.6%, below the central band of the distribution. Identifying the orphaned chair was correct; it just did not mark the end of the decline. It marked the beginning.

Continue reading: The banks leave the seat of honor · The exchange rate that ran 2024 · Two clocks, December 2024 →

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Characters: Structure (intermarket)