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Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
Hyliion HoldingsHYLN -3.21%55 Days Inventory is 66.78 as of Mar. 2026, which is 324% above its 10-year median of 15.74. GuruFocus rates HYLN with a GF Score™ of 55/100 and a GF Value™ of $4.22 (Modestly Undervalued). The stock has 2 warning signs investors should review. Among 1,290 Vehicles & Parts companies, Hyliion Holdings ranks worse than 77.52% on this metric.
The historical rank and industry rank for Hyliion Holdings's Days Inventory or its related term are showing as below:
HYLN'
s Days Inventory Range Over the Past 10 Years
Min: 3.91 Med: 15.74 Max: 128.52
Current: 128.52
During the past 7 years, Hyliion Holdings's highest Days Inventory was 128.52. The lowest was 3.91. And the median was 15.74.
HYLN's Days Inventory is ranked worse than 77.52% of 1290
companies
in the Vehicles & Parts industry
Industry Median: 80.33
vs HYLN: 128.52
Hyliion Holdings's Days Inventory
increased
from Mar. 2025 (0.00) to Mar. 2026 (66.78).
It might indicate that Hyliion Holdings's sales slowed down.
Inventory Turnover measures how fast the company turns over its inventory within a year.
Hyliion Holdings's Inventory Turnover for the
three
months ended in Mar. 2026 was 1.37.
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.
Hyliion Holdings's Inventory-to-Revenue for the
three
months ended in Mar. 2026 was 0.68.
Hyliion Holdings (AMEX:HYLN) 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.
Hyliion Holdings's Inventory Turnover for the
three
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.
Hyliion Holdings's Inventory to Revenue for the
three
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.
Hyliion Holdings Days Inventory Related Terms
Hyliion Holdings Days Inventory Historical Data
* Premium members only.
The historical data trend for Hyliion Holdings'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 Auto Parts subindustry, Hyliion Holdings'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.
Hyliion Holdings Days Inventory vs Vehicles & Parts Industry
For the Vehicles & Parts industry and Consumer Cyclical sector, Hyliion Holdings's Days Inventory distribution charts can be found below:
* The bar in red indicates where Hyliion Holdings'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.
Hyliion Holdings (HYLN) has a Days Inventory of 66.78 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Hyliion Holdings and its competitors. This is 324% above median its historical median of 15.74. Over the past decade, Hyliion Holdings' Days Inventory has ranged from 3.91 to 128.52. According to the industry distribution chart, Hyliion Holdings ranks #1000 out of 1290 companies in the Vehicles & Parts industry, placing it in the top 77.5%.
Is Hyliion Holdings' Days Inventory too high?
Hyliion Holdings' current Days Inventory of 66.78 is 324% above median its 10-year median of 15.74. Over the past 10 years, this metric has ranged from a low of 3.91 to a high of 128.52. The Vehicles & Parts industry median Days Inventory is 80.33. Hyliion Holdings' value of 66.78 is 16.9% below this industry median. Based on the distribution chart, Hyliion Holdings ranks #1000 out of 1290 companies in the Vehicles & Parts industry, which is in the bottom quartile relative to peers. Overall, Hyliion Holdings has a GF Score™ of 55/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Hyliion Holdings' Days Inventory compare to FOXF and SMP?
According to the Vehicles & Parts industry distribution chart, Hyliion Holdings ranks #1000 out of 1290 companies for Days Inventory. This places Hyliion Holdings in the lower half of its industry. The industry median Days Inventory is 80.33. Hyliion Holdings' value of 66.78 is 16.9% below this benchmark. Historically, Hyliion Holdings' own Days Inventory has ranged from 3.91 to 128.52 over the past decade. While the company's 10-year median is 15.74 vs. the industry median of 80.33, Hyliion Holdings has consistently been below the industry average. 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 a Vehicles & Parts company?
The median Days Inventory among Vehicles & Parts companies is 80.33, based on 1,290 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. Hyliion Holdings's current Days Inventory of 66.78 is 16.9% below the industry median. 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 Hyliion Holdings and its competitors. For the Vehicles & Parts industry, the median Days Inventory is 80.33 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Hyliion Holdings's current Days Inventory is 66.78, which is 324% above median its own 10-year median of 15.74. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Hyliion Holdings stock overvalued right now?
Based on GuruFocus' analysis, Hyliion Holdings (HYLN) is currently considered Modestly Undervalued. The stock's GF Value™ is $4.22, compared to a current price of $3.62 — trading 14.2% below its estimated fair value. The current Days Inventory is 66.78, which is 324% above median its 10-year median of 15.74 and 16.9% below the Vehicles & Parts industry median of 80.33. Hyliion Holdings' overall GF Score™ is 55/100 with 2 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 Hyliion Holdings (HYLN), the current Days Inventory is 66.78 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 Hyliion Holdings (HYLN) Overvalued in 2026?
Based on GuruFocus' analysis, Hyliion Holdings stock appears to be undervalued.
The current stock price of $3.62 is trading 14.2% below its estimated GF Value™ of $4.22.
GuruFocus considers Hyliion Holdings to be Modestly Undervalued.
Key valuation signals for HYLN:
Days Inventory: 66.78 (324% above median its 10-year median of 15.74)
GF Value™: $4.22 vs. price of $3.62 (14.2% below fair value)
Industry Position: 16.9% below the Vehicles & Parts median (#1000 of 1290)
No single metric tells the full story. See the HYLN stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Hyliion Holdings Corp designs and develops power generators for stationary and mobile applications and provides R&D service. It provides solutions that enable clean, flexible, and affordable electricity production. The company focuses on delivering distributed power generators that can operate on various fuel sources to future-proof against an ever-changing energy economy. In addition to stationary power solutions, it focuses on mobile applications, including vehicles and marine technologies. Its products and services include: KARNO Power Modules which is a modular, fully enclosed, fuel-agnostic and fully integrated power generating solution.
55GF Score
Get the complete analysis for HYLN
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