Dow 20,000 is finally here.
After weeks of close calls, the Dow made history on Wednesday by blowing past that key level for the first time ever.
The historic milestone leaves the Dow up a stunning 1,667 points since President Donald Trump's victory in November.
The achievement is evidence of how optimistic investors have become about the prospects for the U.S. economy.
"The stock market has given him this extraordinary vote of approval. Happy days are here again," said Ed Yardeni, president of Yardeni Research.
Wall Street is clearly betting that Trump's plans to slash taxes, ramp up infrastructure spending and cut regulation will make the American economy grow faster. If that happens, without any disruptions to global trade, it could propel corporate profits, the lifeblood of stock prices.
But the jump in stocks is also a reflection of the solid economy Trump inherited from former President Obama. The U.S. has added jobs for a record 75 straight months and the unemployment rate is sitting near a 10-year low.