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National Grid plc
NGG
Market cap$81.76 B
Rank#196
SEC filings1,000
Market capitalization of National Grid plc
As of 2026-05-29, National Grid plc (NGG) has a market capitalization of $81.76 B, making it the #196 most valuable US-listed company.
Recent market cap readings
| Date | Market cap |
|---|---|
| 2026-05-29 | $81.76 B |
| 2026-05-28 | $84.85 B |
| 2026-05-26 | $85.66 B |
| 2026-05-25 | $85.66 B |
| 2026-05-24 | $85.66 B |
| 2026-05-22 | $85.66 B |
Readings accumulate daily as market data refreshes, combining SEC-reported share counts with live prices.
Market Cap of similar companies
Frequently asked questions
What is National Grid plc's market cap?
As of 2026-05-29, National Grid plc (NGG) has a market capitalization of $81.76 B, making it the #196 most valuable US-listed company.
Where does National Grid plc rank by market cap?
National Grid plc is the #196 largest US-listed company by market capitalization.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.