Our desk uses a 1-year unweighted Historical Simulation for daily VaR. The market crashed yesterday with a massive drop in an asset. Will today's VaR spike immediately? What happens exactly one year from now?

我们部门用过去一年的未加权数据算每日的历史模拟VaR。昨天市场崩盘，某资产大跌，今天算出来的VaR会立刻飙升吗？那刚好一年之后呢？