National GridNGGTF -2.14%73 Days Inventory is 0.00 as of Mar. 2026. GuruFocus rates NGGTF with a GF Score™ of 73/100 and a GF Value™ of $9.93 (Significantly Overvalued). The stock has 6 warning signs investors should review. Among 452 Utilities - Regulated companies, National Grid ranks worse than 77.65% on this metric.
The historical rank and industry rank for National Grid's Days Inventory or its related term are showing as below:
NGGTF'
s Days Inventory Range Over the Past 10 Years
Min: 28.43 Med: 45.11 Max: 64.3
Current: 56.89
During the past 13 years, National Grid's highest Days Inventory was 64.30. The lowest was 28.43. And the median was 45.11.
NGGTF's Days Inventory is ranked worse than 77.65% of 452
companies
in the Utilities - Regulated industry
Industry Median: 22.56
vs NGGTF: 56.89
National Grid's Days Inventory
stayed the same
from Mar. 2025 (0.00) to Mar. 2026 (0.00).
Inventory Turnover measures how fast the company turns over its inventory within a year.
National Grid's Inventory Turnover for the
six
months ended in Mar. 2026 was 0.00.
Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
National Grid's Inventory-to-Revenue for the
six
months ended in Mar. 2026 was 0.06.
National Grid (OTCPK:NGGTF) Days Inventory Explanation
Days Inventory indicates the liquidity of the inventory. Generally, a lower Days Inventory is preferred as it indicates a shorter duration to clear off the inventory. An increase of the ratio may indicate the company's sales slowed. Similar ratios related to Days Inventory are:
1. Inventory Turnover measures how fast the company turns over its inventory within a year.
National Grid's Inventory Turnover for the
six
months ended in Mar. 2026 is calculated as
2. Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
National Grid's Inventory to Revenue for the
six
months ended in Mar. 2026 is calculated as
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Be Aware
A lot of business are seasonable. It makes more sense to compare Days Inventory from the same period in the previous year instead of from the previous quarter.
National Grid Days Inventory Related Terms
National Grid Days Inventory Historical Data
* Premium members only.
The historical data trend for National Grid's Days Inventory can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
For the Utilities - Regulated Electric subindustry, National Grid's Days Inventory, along with its competitors' market caps and Days Inventory data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
National Grid Days Inventory vs Utilities - Regulated Industry
For the Utilities - Regulated industry and Utilities sector, National Grid's Days Inventory distribution charts can be found below:
* The bar in red indicates where National Grid's Days Inventory falls into.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
National Grid (NGGTF) has a Days Inventory of 0.00 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on National Grid and its competitors. Over the past decade, National Grid's Days Inventory has ranged from 28.43 to 64.30. According to the industry distribution chart, National Grid ranks #351 out of 452 companies in the Utilities - Regulated industry, placing it in the top 77.7%.
Is National Grid's Days Inventory too high?
National Grid's current Days Inventory is 0.00. Over the past 10 years, this metric has ranged from a low of 28.43 to a high of 64.30. Based on the distribution chart, National Grid ranks #351 out of 452 companies in the Utilities - Regulated industry, which is in the bottom quartile relative to peers. Overall, National Grid has a GF Score™ of 73/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does National Grid's Days Inventory compare to NEE and SO?
According to the Utilities - Regulated industry distribution chart, National Grid ranks #351 out of 452 companies for Days Inventory. This places National Grid in the lower half of its industry. The industry median Days Inventory is 22.56. Historically, National Grid's own Days Inventory has ranged from 28.43 to 64.30 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Days Inventory for an Utilities - Regulated company?
The median Days Inventory among Utilities - Regulated companies is 22.56, based on 452 companies in the industry. Companies in the top quartile (top 25%) have a Days Inventory significantly above this median, while those in the bottom quartile fall well below. However, Days Inventory should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Days Inventory mean?
A high Days Inventory can signal that a stock is expensive relative to its fundamentals. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on National Grid and its competitors. For the Utilities - Regulated industry, the median Days Inventory is 22.56 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. National Grid's current Days Inventory is 0.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is National Grid stock overvalued right now?
Based on GuruFocus' analysis, National Grid (NGGTF) is currently considered Significantly Overvalued. The stock's GF Value™ is $9.93, compared to a current price of $16.27 — trading 63.9% above its estimated fair value. The current Days Inventory is 0.00. National Grid's overall GF Score™ is 73/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Days Inventory calculated?
Days Inventory is calculated from a company's financial statements. For National Grid (NGGTF), the current Days Inventory is 0.00 as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is National Grid (NGGTF) Overvalued in 2026?
Based on GuruFocus' analysis, National Grid stock appears to be overvalued.
The current stock price of $16.27 is trading 63.9% above its estimated GF Value™ of $9.93.
GuruFocus considers National Grid to be Significantly Overvalued.
Key valuation signals for NGGTF:
Days Inventory: 0.00
GF Value™: $9.93 vs. price of $16.27 (63.9% above fair value)
No single metric tells the full story. See the NGGTF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
National Grid owns and operates the electric transmission system in England and Wales. It sold the bulk of its UK gas transmission business in fiscal 2023 to fund the acquisition of PPL's UK power distribution assets. In the Northeastern United States, it serves electricity and gas customers combined in three states. It also owns regulated transmission electricity networks in the United States, metering services and merchant transmission lines in the UK.
73GF Score
Get the complete analysis for NGGTF
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