Radar Perene / Archive / episode

The rally on the eve of the storm — December 2019 and the −16.6% bill

◦ Written under index methodology v1 (in effect until 15 Jul 2026). The current series is v2 — readings quoted here may differ from those shown today. See the methodology.

Episode

The extreme

Rarely do the Radar's needles agree so closely — and rarely has the agreement meant so little. After a half-year out of step, now buoyant mood and stalled flow, now the reverse, December 2019 reconciled the house's two axes on the same side: appetite. And there was a protagonist. Listed real estate didn't merely rise — it boiled, pulling away from a full stock market at a pace the archive barely knew. In numbers: the Ânima Index from 43.6 to 78.7 (extreme optimism), the Perene risk from 46.4 to 78.8, the intermarket from 34.99 to 95.57, and the IFIX/IBOV ratio jumping, in thirty days, from ordinary ground into territory the archive almost never visits.

What happened next

The party had no clock in sight, but it had a date. Three months later, in March 2020, fear priced everything at once: the dollar closed at R$ 4.8839, flagged as an anomaly; mood scraped the floor, from 4.1 to 2.6; the premium on cyclicals evaporated, with the Cyclical/Non-Cyclical ratio plunging from a rare extreme to below its own average. At six months, the bill arrived. The house itself, in June 2020, recorded the outcome: December 2019 matured with a return of −16.6%, outside the 80% band projected at the time — whose central range ran from 6.3% to 10.8%, with a median of 9.8%. Deterministic verdict: ambiguity. Twelve months later, in December 2020, appetite was back at the top, with Perene risk at 95.7 and Ânima again in extreme optimism. Another cycle, not a revenge.

What did not happen

December's rally warned of nothing. There was, in the reading, no alarm at all about what was coming in March — because the engine does not forecast, and a high needle is not a sell signal. The brick that boiled didn't keep boiling either: by June, the IFIX/IBOV ratio had already eased from stretched back toward normal behavior. And the recovery a year later did not absolve December — it merely opened another round.

The honest verdict

The system flunked itself: December's result landed outside the band it had projected, over a shallow sample of six comparable episodes. Extreme agreement measures little margin, not direction. When every needle marks the same high number, the honest reading is that the room is full — not that anyone knows the hour the floor gives way.

Continue reading: What's left when fear prices everything · March 2020 was the bottom · The dollar as a regime thermometer →

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