ONTO (Onto Innovation) Inventory Turnover: 0.47 (As of Mar. 2026)

What is Onto Innovation Inventory Turnover?

Onto Innovation ONTO +9.59% 78 Inventory Turnover is 0.47 as of Mar. 2026. GuruFocus rates ONTO with a GF Score™ of 78/100 and a GF Value™ of $189.26 (Significantly Overvalued). The stock has 6 warning signs investors should review.

Inventory Turnover measures how fast the company turns over its inventory within a year. It is calculated as Cost of Goods Sold divided by Total Inventories. Onto Innovation's Cost of Goods Sold for the three months ended in Mar. 2026 was $146 Mil. Onto Innovation's Average Total Inventories for the quarter that ended in Mar. 2026 was $307 Mil. Onto Innovation's Inventory Turnover for the quarter that ended in Mar. 2026 was 0.47.

Days Inventory indicates the number of days of goods in sales that a company has in the inventory. Onto Innovation's Days Inventory for the three months ended in Mar. 2026 was 192.55.

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. Onto Innovation's Inventory-to-Revenue for the quarter that ended in Mar. 2026 was 1.05.

Onto Innovation (NYSE:ONTO) Inventory Turnover Explanation

Inventory Turnover measures how fast the company turns over its inventory within a year. A higher Inventory Turnover means the company has light inventory. Therefore the company spends less money on storage, write downs, and obsolete inventory. If the inventory is too light, it may affect sales because the company may not have enough to meet demand.

1. Days Inventory indicates the number of days of goods in sales that a company has in the inventory.

Onto Innovation's Days Inventory for the three months ended in Mar. 2026 is calculated as:

Days Inventory	=	Average Total Inventories (Q: Mar. 2026 )	/	Cost of Goods Sold (Q: Mar. 2026 )	*	Days in Period
	=	307.145	/	145.56	*	365 / 4
	=	192.55

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.

Onto Innovation's Inventory to Revenue for the quarter that ended in Mar. 2026 is calculated as

Inventory-to-Revenue	=	Average Total Inventories (Q: Mar. 2026 )	/	Revenue (Q: Mar. 2026 )
	=	307.145	/	291.949
	=	1.05

* 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

Usually retailers pile up their inventories at holiday seasons to meet the stronger demand. Therefore, the inventory of a particular quarter of a year should not be used to calculate Inventory Turnover. An average inventory is a better indication.

Onto Innovation Inventory Turnover Related Terms

Onto Innovation Inventory Turnover Historical Data

* Premium members only.

The historical data trend for Onto Innovation's Inventory Turnover can be seen below:

Onto Innovation Inventory Turnover Chart

Onto Innovation Annual Data

Trend

Dec16

Dec17

Dec18

Dec19

Dec20

Dec21

Dec22

Dec23

Dec24

Dec25

Inventory Turnover

Get a 7-Day Free Trial

1.66

1.64

1.21

1.54

1.73

Onto Innovation Quarterly Data
	Jun21	Sep21	Dec21	Mar22	Jun22	Sep22	Dec22	Mar23	Jun23	Sep23	Dec23	Mar24	Jun24	Sep24	Dec24	Mar25	Jun25	Sep25	Dec25	Mar26
Inventory Turnover	Get a 7-Day Free Trial															0.43	0.47	0.41	0.51	0.47

78GF Score

Onto Innovation Inc ONTO

Inventory Turnover is just one metric. See GF Score™, valuation, warning signs, and more.

View Full Analysis

Onto Innovation Inventory Turnover Calculation

Onto Innovation's Inventory Turnover for the fiscal year that ended in Dec. 2025 is calculated as

	Inventory Turnover (A: Dec. 2025 )
=	Cost of Goods Sold	/	Average Total Inventories
=	Cost of Goods Sold (A: Dec. 2025 )	/ (	(Total Inventories (A: Dec. 2024 )	+	Total Inventories (A: Dec. 2025 ))	/	count )
=	505.493	/ (	(286.979	+	298.264)	/	2 )
=	505.493	/	292.6215
=	1.73

Onto Innovation's Inventory Turnover for the quarter that ended in Mar. 2026 is calculated as

	Inventory Turnover (Q: Mar. 2026 )
=	Cost of Goods Sold	/	Average Total Inventories
=	Cost of Goods Sold (Q: Mar. 2026 )	/ (	(Total Inventories (Q: Dec. 2025 )	+	Total Inventories (Q: Mar. 2026 ))	/	count )
=	145.56	/ (	(298.264	+	316.026)	/	2 )
=	145.56	/	307.145
=	0.47

Frequently Asked Questions Learn more about Inventory Turnover →

What does a Inventory Turnover of 0.47 mean?

Onto Innovation (ONTO) has a Inventory Turnover of 0.47 as of Mar. 2026. Inventory turnover equals current-period cost of goods sold divided by average two-period total inventories. View historical data on Onto Innovation and its competitors.

Is Onto Innovation's Inventory Turnover too high?

Onto Innovation's current Inventory Turnover is 0.47. Overall, Onto Innovation has a GF Score™ of 78/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.

How does Onto Innovation's Inventory Turnover compare to NVMI and AMKR?

Onto Innovation's Inventory Turnover of 0.47 can be compared against companies in the Semiconductors industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.

What is a good Inventory Turnover for a Semiconductors company?

A good Inventory Turnover depends on the Semiconductors industry context. However, Inventory Turnover 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 Inventory Turnover mean?

A high Inventory Turnover can signal that a stock is expensive relative to its fundamentals. Inventory turnover equals current-period cost of goods sold divided by average two-period total inventories. View historical data on Onto Innovation and its competitors. Onto Innovation's current Inventory Turnover is 0.47. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.

Is Onto Innovation stock overvalued right now?

Based on GuruFocus' analysis, Onto Innovation (ONTO) is currently considered Significantly Overvalued. The stock's GF Value™ is $189.26, compared to a current price of $385.15 — trading 103.5% above its estimated fair value. The current Inventory Turnover is 0.47. Onto Innovation's overall GF Score™ is 78/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.

How is Inventory Turnover calculated?

Inventory Turnover is calculated from a company's financial statements. For Onto Innovation (ONTO), the current Inventory Turnover is 0.47 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 Onto Innovation (ONTO) Overvalued in 2026?

Based on GuruFocus' analysis, Onto Innovation stock appears to be overvalued. The current stock price of $385.15 is trading 103.5% above its estimated GF Value™ of $189.26. GuruFocus considers Onto Innovation to be Significantly Overvalued.

Key valuation signals for ONTO:

Inventory Turnover: 0.47
GF Value™: $189.26 vs. price of $385.15 (103.5% above fair value)
GF Score™: 78/100 with 6 warning signs

No single metric tells the full story. See the ONTO stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

Onto Innovation Business Description

Industry Technology Semiconductors

Comparable Companies NVMI AMKR FORM ENTG ACMR CAMT KLIC UCTT ACLS AXTI XAMS:ASML AMAT LRCX KLAC TSE:8035 TSE:6857 SZSE:002371 TER SHSE:688012 XAMS:ASM

Other Exchanges ONTO:Mexico NNM:Germany

Address 16 Jonspin Road, Wilmington, MA, USA, 01887

Website https://www.ontoinnovation.com

Onto Innovation Inc is engaged in the design, development, manufacture, and support of high-performance control metrology, defect inspection, lithography, and data analysis systems used by microelectronics device manufacturers. The Company and its subsidiaries currently operate in a single operating segment. The company mainly operates in the United States, Southeast Asia, China, Japan, and Europe, with Taiwan and South Korea the sources of total revenue.

78GF Score

Get the complete analysis for ONTO

Inventory Turnover is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$385.15

Price

$189.26

GF Value

View ONTO Analysis

See Inventory Turnover data for all stocks →