A sense of déjà vu overwhelmed Wall Street this week, as Donald Trump’s election win gave the stock market a jolt similar to what happened after his victory eight years ago. Small caps soared, banks leaped and the S&P 500 Index had its best Election Day in history and strongest week in 12 months.

Many on Wall Street expected Tuesday’s election would be the final obstacle standing in the way of a stock-market melt-up heading into the end of the year. But rising Treasury yields are increasingly a concern.

All year, a slew of Wall Street pros have questioned the durability of an indiscriminate risk rally that has fattened stock prices by trillions of dollars, sent Bitcoin soaring, fueled a credit bonanza, and more. All year, besides a short-lived market ...

JPMorgan Chase fell 4.3%, a day after banks decisively led the market on expectations that a stronger economy and lighter regulation would mean fatter profits. It and Goldman Sachs were the biggest reasons for the Dow’s slight loss.

The president-elect has said he would fire Securities and Exchange Commission Chair Gary Gensler on day one.