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.
Pre-Built PCLBKK:PREB +0.57%75 Days Inventory is 87.25 as of Mar. 2026, which is 25% below its 10-year median of 116.09. GuruFocus rates BKK:PREB with a GF Score™ of 75/100 and a GF Value™ of ฿5.10 (Significantly Undervalued). The stock has 5 warning signs investors should review. Among 1,496 Construction companies, Pre-Built PCL ranks worse than 67.31% on this metric.
Days Inventory is also known as Days Sales of Inventory (DSI). Pre-Built PCL's Average Total Inventories for the
three
months ended in Mar. 2026 was ฿1,184 Mil. Pre-Built PCL's Cost of Goods Sold for the
three
months ended in Mar. 2026 was ฿1,238 Mil.
Hence, Pre-Built PCL's Days Inventory for the
three
months ended in Mar. 2026 was 87.25.
The historical rank and industry rank for Pre-Built PCL's Days Inventory or its related term are showing as below:
BKK:PREB'
s Days Inventory Range Over the Past 10 Years
Min: 77.17 Med: 116.09 Max: 198.48
Current: 93.85
During the past 13 years, Pre-Built PCL's highest Days Inventory was 198.48. The lowest was 77.17. And the median was 116.09.
BKK:PREB's Days Inventory is ranked worse than 67.31% of 1496
companies
in the Construction industry
Industry Median: 49.85
vs BKK:PREB: 93.85
Pre-Built PCL's Days Inventory
declined
from Mar. 2025 (135.04) to Mar. 2026 (87.25).
Inventory Turnover measures how fast the company turns over its inventory within a year.
Pre-Built PCL's Inventory Turnover for the
three
months ended in Mar. 2026 was 1.05.
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.
Pre-Built PCL's Inventory-to-Revenue for the
three
months ended in Mar. 2026 was 0.87.
Pre-Built PCL (BKK:PREB) 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.
Pre-Built PCL'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.
Pre-Built PCL'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.
Pre-Built PCL Days Inventory Related Terms
Pre-Built PCL Days Inventory Historical Data
* Premium members only.
The historical data trend for Pre-Built PCL'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.
BKK:PREB vs PWR, FIX, EME: Days Inventory Comparison
For the Engineering & Construction subindustry, Pre-Built PCL'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.
Pre-Built PCL Days Inventory vs Construction Industry
For the Construction industry and Industrials sector, Pre-Built PCL's Days Inventory distribution charts can be found below:
* The bar in red indicates where Pre-Built PCL'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.
Pre-Built PCL (BKK:PREB) has a Days Inventory of 87.25 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Pre-Built PCL and its competitors. This is 25% below median its historical median of 116.09. Over the past decade, Pre-Built PCL's Days Inventory has ranged from 77.17 to 198.48. According to the industry distribution chart, Pre-Built PCL ranks #1007 out of 1496 companies in the Construction industry, placing it in the top 67.3%.
Is Pre-Built PCL's Days Inventory too high?
Pre-Built PCL's current Days Inventory of 87.25 is 25% below median its 10-year median of 116.09. Over the past 10 years, this metric has ranged from a low of 77.17 to a high of 198.48. The Construction industry median Days Inventory is 49.85. Pre-Built PCL's value of 87.25 is 75% above this industry median. Based on the distribution chart, Pre-Built PCL ranks #1007 out of 1496 companies in the Construction industry, which is below the industry midpoint. Overall, Pre-Built PCL has a GF Score™ of 75/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Pre-Built PCL's Days Inventory compare to PWR and FIX?
According to the Construction industry distribution chart, Pre-Built PCL ranks #1007 out of 1496 companies for Days Inventory. This places Pre-Built PCL in the lower half of its industry. The industry median Days Inventory is 49.85. Pre-Built PCL's value of 87.25 is 75% above this benchmark. Historically, Pre-Built PCL's own Days Inventory has ranged from 77.17 to 198.48 over the past decade. While the company's 10-year median is 116.09 vs. the industry median of 49.85, Pre-Built PCL has consistently been above 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 Construction company?
The median Days Inventory among Construction companies is 49.85, based on 1,496 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. Pre-Built PCL's current Days Inventory of 87.25 is 75% above 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 Pre-Built PCL and its competitors. For the Construction industry, the median Days Inventory is 49.85 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Pre-Built PCL's current Days Inventory is 87.25, which is 25% below median its own 10-year median of 116.09. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Pre-Built PCL stock overvalued right now?
Based on GuruFocus' analysis, Pre-Built PCL (BKK:PREB) is currently considered Significantly Undervalued. The stock's GF Value™ is ฿5.10, compared to a current price of ฿3.50 — trading 31.4% below its estimated fair value. The current Days Inventory is 87.25, which is 25% below median its 10-year median of 116.09 and 75% above the Construction industry median of 49.85. Pre-Built PCL's overall GF Score™ is 75/100 with 5 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 Pre-Built PCL (BKK:PREB), the current Days Inventory is 87.25 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 Pre-Built PCL (BKK:PREB) Overvalued in 2026?
Based on GuruFocus' analysis, Pre-Built PCL stock appears to be undervalued.
The current stock price of ฿3.50 is trading 31.4% below its estimated GF Value™ of ฿5.10.
GuruFocus considers Pre-Built PCL to be Significantly Undervalued.
Key valuation signals for BKK:PREB:
Days Inventory: 87.25 (25% below median its 10-year median of 116.09)
GF Value™: ฿5.10 vs. price of ฿3.50 (31.4% below fair value)
Industry Position: 75% above the Construction median (#1007 of 1496)
No single metric tells the full story. See the BKK:PREB stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Pre-Built PCL is engaged in construction and civil engineering work. The company, along with its subsidiaries, operates in the following segments: Construction contractual, Selling of pre-cast floors, Property development, and Others. A majority of its revenue is generated from the Construction contractual segment. Its construction operations include housing projects, commercial buildings, office buildings, shopping centers, hospitals, schools, and power plants. Geographically, the company operates in Thailand.
75GF Score
Get the complete analysis for BKK:PREB
Days Inventory is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
BKK:PREB has been successfully added to your 
