Los Angeles sets
a cargo record.
What does it measure?

The port's detailed September table reports 545,695.60 loaded-import TEUs, 125,750.75 loaded-export TEUs and 371,205.95 empty TEUs. Those components add to 1,042,652.30. The announcement rounds the total to a whole number; the statistical table retains decimal places. Throughout this article, whole-unit figures are rounded, and shares are calculated from the detailed table rather than from separately rounded headline numbers.

Loaded imports represented approximately 52.3% of September throughput. Loaded exports accounted for 12.1%, with empties making up the remaining 35.6%. These are shares of container-equivalent movements at this port. They are not shares of U.S. consumption, merchandise value or national exports. A graphic that labels all three segments as imported goods would collapse three different categories into one.

There was also genuine growth in loaded cargo. The port's comparison with September 2025 shows loaded imports up 18.62%, loaded exports up 9.64% and total loaded volume up 16.83%. Empty volume rose 20.40%. The overall increase was 18.07%. It would therefore be equally wrong to dismiss the record as nothing more than empty boxes. Both loaded cargo and equipment repositioning contributed to a busier month.

The distinction changes the story without canceling it. The headline describes how much container-equivalent activity crossed the waterfront. The breakdown describes the mix of that activity. A responsible reading needs both, rather than choosing whichever number supports a preferred claim about American strength or weakness.

TEU stands for twenty-foot equivalent unit, a standardized measure that makes containers of different sizes comparable. A standard 40-foot container represents two TEUs. Consequently, a monthly total of just over one million TEUs does not establish that just over one million separate containers were handled. The Bureau of Transportation Statistics explicitly distinguishes this unit of measurement from a count of physical containers.

Consider a simple illustration: one hundred 40-foot containers and two hundred 20-foot containers each represent two hundred TEUs. They do not require the same number of individual box movements. Nor do they necessarily carry the same weight, merchandise, value or number of products. The example is arithmetic, not a description of the actual September container mix, which cannot be reconstructed from the headline total alone.

The same caution applies to the word loaded. A loaded container is categorized as carrying cargo, but that label does not tell readers that every cubic foot is occupied or that the shipment weighs the same as another loaded container. A box of bulky, low-value goods and a box of compact, expensive components can occupy comparable transport space while representing very different economic values.

This is why unit labels should travel with every number. TEUs, physical containers, tons, dollars and retail sales are not interchangeable measures. A port report can be accurate on its own terms and still be used incorrectly when a reader silently substitutes one unit for another.

An empty container is still a physical piece of equipment. It occupies space, must be handled, and has to be positioned for another use. Removing empty movements from an operational total would hide part of the work that terminals and shipping networks perform. But including them in a claim about the value of goods purchased would overstate what the measure can establish.

The port's September breakdown makes the direction especially clear: it lists 369,718.25 empty-export TEUs and 1,487.70 empty-import TEUs. That is a pronounced outbound equipment flow. It is not the same thing as exporting an equivalent amount of American-made merchandise. The loaded-export series, rather than total export movements that also include empties, is the appropriate container-volume category for that narrower question.

It is tempting to turn a large empty share into an immediate judgment about efficiency. That leap is not supported by the aggregate table. To evaluate the cost or avoidability of repositioning, an analyst would need information about where equipment is required, ownership, bookings, cargo compatibility, timing and alternative uses. The monthly count does not reveal whether a particular empty movement was unnecessary.

Likewise, an aerial photograph of rows of containers cannot identify which boxes are loaded. The actual photographs accompanying this article show port infrastructure and work; they are not a visual census of September's cargo status. Exterior appearance alone does not supply the information that the statistical categories contain.

September's year-over-year increase of 18.07% was much larger than the increase for the first nine months of the year. The port reported 8,081,625.55 TEUs from January through September, up 3.38% from the comparable 2025 period. Both statements can be true because the monthly comparison and the cumulative comparison answer different questions.

The 2026 monthly table also shows why selecting only the strongest month would obscure the year's path. January volume was below the prior-year level, while May and June posted increases. July and August were slightly or substantially below their respective year-earlier comparisons even though their absolute volumes remained high. September then delivered the record. A busy sequence and a uniformly accelerating sequence are not the same thing.

July, August and September together totaled approximately 2.959 million TEUs, calculated from the published monthly entries. The port described that as its busiest quarter. For interpreting the announcement, that quarterly context is useful: the record did not arrive in an otherwise empty calendar. Yet it still does not convert September's growth rate into a forecast for October, the holiday season or the final annual result.

The table's October, November and December rows were blank when reviewed for this report. Those blanks are not zero activity and should not be plotted as a collapse. They indicate that completed monthly observations were not yet available in that table. A forecast, a vessel-arrival estimate and a reported monthly total need different labels even when they appear in the same discussion.

In the port's announcement, Executive Director Gene Seroka attributed the strong run to consumer demand, inventory replenishment and cargo being allocated to Los Angeles as shippers navigated other route challenges. Those are the port's explanations. The container table by itself does not estimate how much of the increase came from each factor, nor does it isolate a single cause.

This matters because a gateway can gain volume without an equivalent increase in total national demand. Some shipments can move through a different port, arrive in a different month, or replenish inventories that were drawn down earlier. Conversely, a change at one gateway can coexist with a broader increase. To distinguish these possibilities, a reader needs other ports, modes of transportation and economic measures, not just a larger number at Los Angeles.

A useful analogy is a store receiving more deliveries. More deliveries might support more sales, rebuild stock, reflect a switch from another warehouse, or arrive after an earlier delay. The receiving count does not identify the explanation on its own. Port traffic is far more complex, but the analytical problem is similar: observed movement and underlying demand are connected without being identical.

The port's comments about trade policy should also not be turned into a universal tariff statement. Actual treatment depends on the goods, origin, entry circumstances and applicable rules. This article does not calculate duties or advise an importer on a shipment. Its narrower finding is that the port sees several forces behind its volume, while the published total cannot assign a causal share to each one.

The Census Bureau's trade statistics distinguish merchandise values using defined reporting concepts. Its customs-value measure generally reflects the price paid or payable for imports, excluding U.S. import duties and specified costs of bringing the goods to the United States. Export values use a different defined basis. These are monetary concepts, not the amount of container-equivalent space handled by a terminal.

That difference prevents a shortcut. Subtracting loaded-export TEUs from loaded-import TEUs does not produce a dollar trade deficit. The calculation would yield a difference in a transport-volume measure at one port. It would omit the value and composition of the cargo and the rest of the country's trade routes. It would also leave out merchandise moving by other modes or in forms that are not represented in this container series.

For the same reason, multiplying the month's TEUs by an assumed average price per box would create an estimate dependent on an unsupported assumption. Different products can have dramatically different values per unit of transport space. Without cargo-level or appropriately aggregated valuation data, the attractive precision of the multiplication would disguise rather than solve the missing information.

This is not an argument against port statistics. It is an argument for using them for the question they can answer. They show an important dimension of physical activity at a major gateway. Customs and other economic data can add the monetary and product dimensions. Combining sources is useful; treating one source as if it already contains every dimension is not.

A record number of TEUs establishes high throughput. It does not, by itself, establish either a congested port or a congestion-free one. A system can process more cargo while delays rise in a particular part of the network. It can also process more cargo efficiently because operations and onward transport keep pace. To decide between those situations, the missing variable is time and the location of the queue.

The Port of Los Angeles' operations dashboard describes separate measures for vessels at berth, containers by dwell-time bands, rail cargo awaiting loading, chassis conditions and trucking appointments. Some reports are updated on business days; some tracking functions require registration. Those different measures exist because a monthly total cannot describe every stage of the journey.

For a business expecting a specific shipment, the useful sequence is concrete: has the vessel arrived, has the container been discharged, is it available for collection, is the required appointment or equipment available, and has the cargo actually left the terminal? This is an operational framework, not a claim that a particular shipment is delayed or that all terminals follow identical processes.

No live terminal performance figures are asserted here. The dashboard's description establishes what kinds of indicators it provides, not a verified October reading for each indicator. That distinction avoids a common reporting error: seeing that a monitoring tool exists and then writing as if its current results have already been inspected.

Port photographs often focus on ships and cranes, but a box crossing the waterfront still needs an onward connection. Rail, trucks, storage and distribution are part of that physical network. The port's rail overview describes on-dock and near-dock facilities linking terminals with the Alameda Corridor and the national rail system. Those connections help explain why a local port number has relevance well beyond Southern California.

The economic question is not simply how quickly a crane can lift a container. It is whether the different stages work together. Vessel schedules, terminal handling and onward movement can have different constraints. Improving one stage does not automatically remove a bottleneck elsewhere, just as a busy berth does not tell a reader how long a box remains on land.

The workforce is part of that coordination, not a decorative detail. The port credited waterfront workers and supply-chain partners in announcing the record. However, the monthly TEU table is not an employment report. It cannot establish how many additional jobs were created, how many hours any worker received, or whether pay increased. Those claims require labor or employer data rather than inference from cargo volume.

There is another boundary in the photographs: the port handles activities beyond the container series. A picture of heavy metal being hoisted illustrates waterfront work, but it should not be labeled as an example of a TEU count. Cargo type, handling method and measurement must remain aligned. An attractive image should clarify the distinction, not quietly erase it.

The next monthly report will be more informative if it is compared consistently. First, check loaded imports, loaded exports and empties separately. A similar headline total can conceal a different mix. Second, compare the same month a year earlier as well as the year-to-date period. One strong monthly comparison should not be substituted for the cumulative result.

Third, keep Los Angeles separate from the wider San Pedro Bay complex unless the source explicitly combines them. Neighboring gateways are geographically connected, but this article's numbers are the Port of Los Angeles series. Combining a photo of the broader harbor with a Los Angeles total does not make the total a two-port measure.

Fourth, separate a forecast from an observation. Expected arrivals, booking information and estimates can be useful forward-looking signals. They are not completed monthly movements. Fifth, match the economic claim to the source: merchandise value to valuation data, labor outcomes to employment evidence, and congestion to operating-time measures. This discipline makes a report more useful without requiring a reader to become a shipping specialist.

The result is a clearer interpretation of September. Los Angeles had an exceptionally busy month, and loaded cargo increased as well as empty equipment. More than a third of its throughput consisted of empty-container TEUs, an operationally meaningful component that should not be mistaken for more goods sold. The record is strongest as evidence of port activity. Its significance for the wider economy depends on what happens beyond the headline and which additional evidence is brought to the comparison.