# Companies that make things used to make things have seen earnings boosted by big jumps in prices. Is that a bad thing?

The company produces specialty materials and chemicals used by a wide range of manufacturers, including those that make cars, cosmetics, food packaging, toys and infant products and semiconductors.

Fellow chemicals company Celanese Corp.
CE,
+2.55%
also reported upbeat first-quarter results, as pricing rose 15%.

Meanwhile, copper producer Freeport-McMoRan Inc.
FCX,
+5.18%
reported Thursday that it swung to a first-quarter net profit that was the highest in almost three years, and revenue that nearly doubled, as the average realized price for copper jumped 62%.

Often referred to as “Dr. Copper,” the metal’s performance can help diagnose the underlying health of the economy given its broad uses, such as for communications, construction, computers, cars and coins.

Don’t miss: Commodities Corner: Copper prices post highest finish in more than 9 years.

There’s also steelmaker Nucor Corp.
NUE,
+2.29%,
which reported a record first-quarter profit of nearly $1 billion, on revenue that topped $7 billion, as average sales prices per ton jumped 25% from a year ago, with the “favorable” demand environment expected to continue through the rest of 2021.

The companies’ results help put in context the bigger-than-expected increases seen in wholesale prices and consumer inflation for March.

Art Hogan, chief market strategist at broker and asset manager National Holdings Corp., said the price increases are a sign of real, underlying strength in the economy, as they are reflecting a broad surge in demand.

“It’s actually happening for the right reasons,” Hogan said.

And any resulting inflation spike is likely to be temporary, Hogan said, as capacity utilization, which was hampered by pandemic-related lockdowns, will “ramp up” in the coming months to boost supply, which will help prices stabilize.

That’s basically what Federal Reserve Chairman Jerome Powell has been saying this year, and the reason the Fed hasn’t started tapping the brakes on economic growth. Read the minutes of the Fed’s January policy-setting committee.

“When you shut manufacturing down, it’s hard to start it back up,” Hogan said. “The supply reaction takes longer than the demand function.”

As Freeport-McMoRan Chief Executive explained on the company’s post-earnings conference call with analysts regarding the rise in copper pricing, according to a FactSet transcript: “You can’t turn on the valve quickly to add new mine supply, and when you can’t do that and volume and demand rises, that translates into higher prices.”

And Dow Chief Executive James Fitterling said in a call with analysts that it wasn’t just the pandemic that caused supply constraints. He said Winter Storm Uri caused a “far-reaching,” but temporary, impact on supply. “Our colleagues quickly and safely got our units back online, some of which began coming up within a week of the storm,” Fitterling said.

Over the past 12 months, Dow’s stock has run up 90.8% and Freeport-McMoRan shares have soared 367.9%, while the SPDR Materials Select Sector exchange-traded fund
XLB,
+1.64%
has rallied 68.9%. They have all outperformed the S&P 500 index
SPX,
+1.09%,
which has gained 49.4% over the past year.