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NEW YORK (Reuters) - Fresh worries about rising costs and inflation face U.S. stock investors looking toward the coming week and the next leg of the first-quarter earnings period.

In the latest week, the busiest for first-quarter reports, several companies warned about or cited higher costs.

Caterpillar (CAT.N) said it was worried about higher prices for steel it needs for manufacturing. Alphabet (GOOGL.O) said margins were squeezed by rising costs related to marketing and acquiring streaming rights for YouTube’s new TV service, while Procter & Gamble (PG.N) cited higher commodities and transportation costs.

Shares of all three companies declined even though their quarterly earnings were mostly strong.

Investors will be alert for more signs of rising costs next week, which brings results from several big consumer names like Kellogg (K.N) and market-cap leader Apple (AAPL.O). Also on tap will be a Federal Reserve meeting, the April jobs report and data on wages and inflation.

The first quarter was the first reporting period since U.S. President Donald Trump in March imposed a duty on imports of steel and aluminum. Prices for those and other commodities have risen sharply, with U.S. crude oil CLc1 up 7.5 percent in the first quarter.

“The wind was at the backs of these companies for a long time. Now it’s sort of turned. Input costs are up for most people,” said Rick Meckler, president of investment firm LibertyView Capital Management in Jersey City, New Jersey.

“How are companies able to handle that, and what are they able to do to offset it? Those are the kinds of things investors will look at.”

Higher input costs squeeze profits for companies. Compounding these worries, the yield on 10-year U.S. Treasuries

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