Growth Metrics

Nisource (NI) Operating Margin (2016 - 2026)

Nisource filings provide 17 years of Operating Margin readings, the most recent being 7.9% for Q4 2025.

  • On a quarterly basis, Operating Margin rose 26.0% to 7.9% in Q4 2025 year-over-year; TTM through Dec 2025 was 16.4%, a 68.0% increase, with the full-year FY2025 number at 28.14%, up 59.0% from a year prior.
  • Operating Margin hit 7.9% in Q4 2025 for Nisource, down from 23.99% in the prior quarter.
  • In the past five years, Operating Margin ranged from a high of 34.78% in Q1 2025 to a low of 7.64% in Q4 2024.
  • Median Operating Margin over the past 5 years was 21.27% (2022), compared with a mean of 21.37%.
  • Biggest five-year swings in Operating Margin: surged 1880bps in 2021 and later crashed -2104bps in 2024.
  • Nisource's Operating Margin stood at 21.01% in 2021, then increased by 2bps to 21.44% in 2022, then soared by 34bps to 28.68% in 2023, then plummeted by -73bps to 7.64% in 2024, then rose by 3bps to 7.9% in 2025.
  • The last three reported values for Operating Margin were 7.9% (Q4 2025), 23.99% (Q3 2025), and 21.09% (Q2 2025) per Business Quant data.