Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
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.
Sidus SpaceSIDU -5.28%30 Market Cap is $183.50 Mil as of Jul. 16, 2026. GuruFocus rates SIDU with a GF Score™ of 30/100 and a GF Value™ of $0.10 (Significantly Overvalued). The stock has 4 warning signs investors should review. Among 362 Aerospace & Defense companies, Sidus Space ranks worse than 69.89% on this metric.
Market cap is the total market value to buy the whole company. It is equal to the share price times the number of Shares Outstanding (EOP). Sidus Space's share price for the quarter that ended in Mar. 2026 was $2.32. Sidus Space's Shares Outstanding (EOP) for the quarter that ended in Mar. 2026 was 66.52 Mil. Therefore, Sidus Space's market cap for the quarter that ended in Mar. 2026 was $154.33 Mil.
Sidus Space's quarterly market cap
increased
from Sep. 2025 ($36.66 Mil) to Dec. 2025 ($205.43 Mil) but then
declined
from Dec. 2025 ($205.43 Mil) to Mar. 2026 ($154.33 Mil).
Sidus Space's annual market cap
increased
from Dec. 2023 ($9.54 Mil) to Dec. 2024 ($78.68 Mil) and
increased
from Dec. 2024 ($78.68 Mil) to Dec. 2025 ($205.43 Mil).
Enterprise Value is the theoretical takeover price. It is more comprehensive than market capitalization (market cap), which only includes common equity. Enterprise Value is calculated as the market cap plus debt and minority interest and preferred shares, minus total cash and cash equivalents. Sidus Space's Enterprise Value for Today is $156.88 Mil.
Sidus Space (NAS:SIDU) Market Cap Explanation
Market cap is not the real price you pay for a company. If you buy the company and become its owner, you become the owner of the cash the company has, and you also assume the companys debt. The real price you pay is the Enterprise Value.
Warren Buffett uses the ratio of total market cap of all public traded companies over GDP to measure if the market is expensive. As of April 2012, the US total market cap is about $14.7 trillion, while the US GDP is about $15 trillion. The market was modestly overvalued.
Sidus Space Market Cap Related Terms
Sidus Space Market Cap Historical Data
* Premium members only.
The historical data trend for Sidus Space's Market Cap 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 Aerospace & Defense subindustry, Sidus Space's Market Cap, along with its competitors' market caps and Market Cap 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.
Sidus Space Market Cap vs Aerospace & Defense Industry
For the Aerospace & Defense industry and Industrials sector, Sidus Space's Market Cap distribution charts can be found below:
* The bar in red indicates where Sidus Space's Market Cap falls into.
Market cap is the short version of market capitalization. It is the total market value to buy the whole company. It is equal to the share price times the number of shares outstanding.
Sidus Space's Market Cap for the fiscal year that ended in Dec. 2025 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.
Sidus Space (SIDU) has a Market Cap of $183.50 Mil as of Jul. 16, 2026. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Sidus Space and its competitors. According to the industry distribution chart, Sidus Space ranks #253 out of 362 companies in the Aerospace & Defense industry, placing it in the top 69.9%.
Is Sidus Space's Market Cap too high?
Sidus Space's current Market Cap is $183.50 Mil. The Aerospace & Defense industry median Market Cap is 790.87. Sidus Space's value of $183.50 Mil is 76.8% below this industry median. Based on the distribution chart, Sidus Space ranks #253 out of 362 companies in the Aerospace & Defense industry, which is below the industry midpoint. Overall, Sidus Space has a GF Score™ of 30/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Sidus Space's Market Cap compare to FJET and POWW?
According to the Aerospace & Defense industry distribution chart, Sidus Space ranks #253 out of 362 companies for Market Cap. This places Sidus Space in the lower half of its industry. The industry median Market Cap is 790.87. Sidus Space's value of $183.50 Mil is 76.8% below this benchmark. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Market Cap for an Aerospace & Defense company?
The median Market Cap among Aerospace & Defense companies is 790.87, based on 362 companies in the industry. Companies in the top quartile (top 25%) have a Market Cap significantly above this median, while those in the bottom quartile fall well below. However, Market Cap should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Sidus Space's current Market Cap of $183.50 Mil is 76.8% 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 Market Cap mean?
A high Market Cap can signal that a stock is expensive relative to its fundamentals. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Sidus Space and its competitors. For the Aerospace & Defense industry, the median Market Cap is 790.87 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Sidus Space's current Market Cap is $183.50 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Sidus Space stock overvalued right now?
Based on GuruFocus' analysis, Sidus Space (SIDU) is currently considered Significantly Overvalued. The stock's GF Value™ is $0.10, compared to a current price of $1.89 — trading 1785% above its estimated fair value. The current Market Cap is $183.50 Mil and 76.8% below the Aerospace & Defense industry median of 790.87. Sidus Space's overall GF Score™ is 30/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Market Cap calculated?
Market Cap is calculated from a company's financial statements. For Sidus Space (SIDU), the current Market Cap is $183.50 Mil as of Jul. 16, 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 Sidus Space (SIDU) Overvalued in 2026?
Based on GuruFocus' analysis, Sidus Space stock appears to be overvalued.
The current stock price of $1.89 is trading 1785% above its estimated GF Value™ of $0.10.
GuruFocus considers Sidus Space to be Significantly Overvalued.
Key valuation signals for SIDU:
Market Cap: $183.50 Mil
GF Value™: $0.10 vs. price of $1.89 (1785% above fair value)
Industry Position: 76.8% below the Aerospace & Defense median (#253 of 362)
No single metric tells the full story. See the SIDU stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Sidus Space Inc is a space and defense technology company with core capabilities that include dual use satellite manufacturing & technology integration, AI products and services, space and defense hardware components and space-based data solutions. The company generates revenue through a combination of: Satellite platform sales and customization, Payload hosting and mission services, Engineering and systems integration services, and Space and defense hardware manufacturing. The firm supports Commercial Space, Aerospace, Defense, Underwater Marine, and other commercial and government customers. The firm generates revenue principally from satellite platform and payload hosting contracts, manufacturing and engineering services, mission operations, and sales of proprietary hardware products.
30GF Score
Get the complete analysis for SIDU
Market Cap is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
SIDU has been successfully added to your 
