How to Benefit from a Stock Throughput Policy (STP) in 2026

In the face of persistent market volatility and geopolitical uncertainty, securing reliable cargo coverage is a key to long-term success. Traditional methods of insuring goods often involve a collection of separate policies for transit and storage, which can result in potential coverage gaps, exposing businesses to unexpected financial loss when goods are damaged or stolen.

The solution lies in a streamlined, comprehensive alternative: the Stock Throughput Policy.

Defining the Stock Throughput Policy

A Stock Throughput Policy (STP) represents a crucial evolution in marine cargo coverage. This single, unified policy is engineered to protect your entire inventory from initial raw materials to finished products.

A STP provides true end-to-end protection. This means goods are covered throughout the production cycle, whether they are in the process of being manufactured, securely stored at owned or third-party facilities, or moving across oceans, airways, or inland routes toward their final destination. The coverage scope can even be extended to merchandise while held at retail locations.
 

Recent Strategic Market Shifts

The appeal of a Stock Throughput Policy has intensified more recently, driven by a significant divergence between the property and marine cargo insurance sectors. Inventory is frequently insured under commercial property policies, which typically carry higher premiums and much larger deductibles, especially in regions prone to natural catastrophes.

Implementing an STP offers a strategic way to remove inventory value from the expensive property policy, allowing the organization to take advantage of the more competitive terms available in the cargo market. As capacity continues to grow, particularly in the competitive London market, conditions for marine cargo insurance are softening.

For clients with favorable loss histories, rates for transit and stock throughput are trending flat or, in some cases, are reduced. This rate advantage makes a STP structure a superior financial and risk management tool when compared to insuring inventory in the property market, which remains highly focused on limiting catastrophic (CAT) exposure.
 

Core Advantages of a Unified Policy

Beyond simplifying policy administration, a STP delivers several key advantages that address critical issues in today's global supply chain.

First, the key functional benefit of a STP is the elimination of coverage gaps. By combining separate ocean cargo, inland transit, and property/stock coverage into one seamless contract, the risk of a loss falling between two policies is completely removed. This door-to-door coverage ensures goods are protected at all times, including during critical loading and unloading activities.

Second, the claims process is dramatically simplified. Instead of managing complex claims with multiple brokers and carriers that might argue over who holds responsibility, the insured only deals with a single policy and a single adjuster. This accelerates recovery, reduces administrative burden, and minimizes business interruption following a loss.

Finally, STPs often provide a broader standard of protection. They are typically written on an all-risk basis, covering physical loss or damage, which is superior to the named perils found in many traditional property forms. Furthermore, STPs can be structured to pay claims based on a Selling Price Basis of Valuation. This critical distinction means that in the event of a total loss, the insured is indemnified for the full price they would have realized from the customer, including any profit margin. This provides a much more complete financial recovery than coverage based solely on manufacturing cost. 

Essential Considerations for Securing Optimal Terms

Success with a STP hinges on detailed planning and disclosure. Insurers remain focused on managing their accumulation of risk, especially concerning high-hazard categories such as temperature-sensitive goods, pharmaceuticals, and high-value electronics that are prone to theft.

It is important to consider the available limits, rates, and deductibles in both the cargo and property markets before making a final decision. To secure the most favorable terms and rates, clients must provide detailed exposure data, such as packaging details, loading and transportation standards, and security measures, that clearly differentiates their risk management protocols from industry peers. Underwriters are monitoring their portfolio concentration in areas susceptible to natural catastrophe events and political volatility, meaning robust internal loss control strategies must be communicated clearly. 

Achieving the broadest, most seamless protection for your operation is a necessity. Given the current competitive dynamics in the marine cargo insurance space, a Stock Throughput Policy may be the most cost-effective and comprehensive solution to safeguard your inventory across your entire supply chain.

ECIB is ready to partner with you to analyze your unique risk profile and determine if a STP is the correct strategic move for your business today.

Contact an ECIB representative to learn more about your options.