Nisource Operating Margin Growth & History (NI)

Nisource's operating margin was 28.14% for fiscal 2025.

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Nisource annual operating margin history

Nisource annual operating margin

Fiscal yearPeriod endedOperating marginChange (percentage points)
20252025-12-3128.14%+0.59 pp
20242024-12-3127.55%+3.33 pp
20232023-12-3124.22%+2.17 pp
20222022-12-3122.06%+0.78 pp
20212021-12-3121.28%+8.97 pp
20202020-12-3112.31%−5.31 pp
20192019-12-3117.63%+15.13 pp
20182018-12-312.50%−16.98 pp
20172017-12-3119.47%−0.24 pp
20162016-12-3119.72%+2.52 pp
20152015-12-3117.20%+2.23 pp
20142014-12-3114.97%−0.13 pp
20132013-12-3115.09%−5.58 pp
20122012-12-3120.67%+4.77 pp
20112011-12-3115.90%+1.90 pp
20102010-12-3114.00%+1.97 pp
20092009-12-3112.03%+1.68 pp
20082008-12-3110.35%

Nisource operating margin trends

Over the last five reported fiscal years, Nisource's operating margin increased from 12.31% to 28.14%, a change of +15.82 percentage points. The latest reported quarter, Q2 2026, shows 17.69%.

About the metric

What operating margin means

Operating margin measures the percentage of revenue left after operating costs and expenses. It shows how much operating profit a company generates from each dollar of revenue.

Calculation and source

How operating margin is calculated

TickerStat calculates operating margin as SEC-reported operating income divided by SEC-reported revenue for the same fiscal period. Changes are shown in percentage points. Fiscal periods can differ from calendar years, so exact period-end dates are included.

Review Nisource filings at SEC.gov ↗