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Eastern freight railroad Norfolk Southern Corp.’s first-quarter profit fell, while Kansas City Southern said its net income nearly doubled.

Railroads Canadian National and Burlington Northern Santa Fe Corp. reported their first-quarter profits declined, even as revenue rose.

Canadian transportation firm TransForce Income Fund said Tuesday it earned C$20.9 million or 24 cents a share in the first quarter, down from C$22.1 million or 27 cents a year earlier.

Transportation and logistics firm C.H. Robinson Worldwide said its first-quarter net income jumped 25.6% to $73 million or 42 cents a share, up from $58.1 million or 33 cents a year ago.

Third-party logistics company and freight broker Hub Group said late Thursday its first-quarter profit rose 25% to $11.4 million or 29 cents a share, from $9.1 million or 22 cents a share a year ago.

Union Pacific Corp., the nation’s largest freight railroad, said Thursday its first-quarter profit rose 24% to $386 million or $1.41 per share, from $311 million or $1.15 last year.

CSX Corp. late Tuesday reported that its first-quarter profit fell 2%, due to slower freight demand and a sluggish economy.

Canadian National Railway Co.’s 2,800 union conductors and yard workers began rotating strikes Wednesday after rejecting a proposed one-year contract, Bloomberg reported.

Norfolk Southern Corp. Chief Executive Officer Charles “Wick” Moorman told the Surface Transportation Board that buyout firms probably will not try to acquire major U.S. railroads because of opposition by rail management, Bloomberg reported.