You probably already heard that the president tipped people off ahead of time about the last employment numbers. That’s a very big no-no. It gives traders who can respond quickly a very big edge.

But in case the president does it again in the future, know this: Anyone following his lead could have gotten absolutely annihilated.

More than an hour before the May jobs report was released on June 1, Trump tweeted “looking forward to seeing the employment numbers at 8:30 this morning.”

Everyone knew what that meant — the jobs report would be strong. And it was, with 223,000 new jobs, which was above consensus and helped bring down the unemployment rate to 3.8 percent.

Stock prices went up nicely on the news.

But stocks could very easily have declined.

Why?

Because that very same news sent bond prices down a lot, interest rates rose and the May report almost guaranteed that the Federal Reserve will continue to raise interest rates.

And all of that could have caused nervousness in the stock market. So unless you are a quick in-and-out trader, you could have easily lost a bundle instead of making money.

The White House, of course, defended Trump’s action. But there should be a warning on that particular tweet: “Past results are no guarantee of future returns.”