Brazil stock index futures plunge 15%, hit limit down after Lula wins election

A limit-down futures move of this size signals that positioning had leaned heavily toward the incumbent's continuity, and the result forced a rapid repricing rather than a gradual one. The immediate impact falls on holders of Brazilian equity exposure and anyone using index futures to hedge, since limit-down conditions can trap positions and thin liquidity at the open. What matters next is whether cash-market trading confirms the futures reaction or overshoots it, and whether the move stays confined to equities or spreads into currency and rates — that breadth, not the headline percentage, is the real signal of how investors are reading the policy outlook.