Companies are still trying to sort out their inventory levels and strategies after the economy screeched to a halt during the pandemic and then quickly restarted.
Dr. Zac Rogers is an associate professor of supply chain management at Colorado State University's College of Business. He is a co-author of the monthly Logistics Managers’ Index.
At this time last year, firms were scrambling to figure out how to store inventory that could no longer be sold due to COVID lockdowns. Now the New York Times is writing articles titled “How the World Ran out of Everything,”1 as we deal with shortages ranging from fireworks2 to semiconductors.3
When I wrote the inventory update for Supply Chain Quarterly’s 2020 State of Logistics issue, I reported that the retail inventory-to-sales ratio for April 2020 was 1.67, one of its highest readings ever and the highest since 1995. One year later, the inventory-to-sales ratio comes in at 1.07—the lowest reading ever by some distance. While it may not sound like it, the movement of 0.6 points is the largest one-year movement in the history of this index. However, this does not mean that inventory is lower; it is actually the opposite, as overall levels are up by 1.3% from the same time last year (and up 4.7% from their nadir in July).
The difference lies in retail sales being 48.1% higher in April 2021 compared to April 2020 due to the reopening of the economy and the ending of COVID lockdowns. Retail sales have climbed every month since April, putting even more pressure on inventories. This trend helps to explain the ongoing shortages, delivery delays, and price spikes being reported across multiple industries. Many businesses have gone from standing still at this time a year ago to sprinting as quickly as they can in order to keep up with burgeoning consumer demand.
Side effects of pent-up demand
This shift has been largely driven by pent-up demand from U.S. consumers as they emerge from pandemic shutdowns. The U.S. economy grew at a rate of 6.4% in Q1 2021, and economists expect consumer spending could be up 9% this year—the highest increase since 1946—the year after the end of World War II. Savings were at 12.4% in May 2021, nearly 50% higher than the 8.3% registered in February 2020 before the lockdowns.4 The excitement over this rapid recovery has been somewhat tempered by fears of inflation, as consumer prices were up 5% for the 12-month period ending in May—the sharpest increase since 2008.5
These costs can be largely explained by the pressure that the sudden shutdown and rapid recovery has placed on the logistics industry. The Logistics Managers’ Index (LMI) measures the growth/contraction of key logistics metrics on a monthly basis (see Figure 1). The month-to-month movement for inventory levels (yellow line), inventory costs (purple line), available warehouse capacity (blue line), warehouse prices (green line), transportation capacity (gray line), and transportation costs (red line) are presented in the figure. When interpreting this figure, any value over 50.0 (represented by the dashed, black line) indicates month-to-month growth, and any value below 50.0 indicates contraction.
At the outset of COVID-19 (February 2020), inventory levels were down slightly (as they often are post-Q4), and inventory costs, warehouse capacity, and warehouse prices were all growing at moderate rates. As with most other things, the COVID-related lockdowns flipped these metrics on their heads. Inventory costs have increased considerably over the last 15 months. Interestingly, inventory levels have grown fairly steadily, eschewing the sharp growth or contraction patterns seen with every other metric in the figure. This moderate rate of inventory growth combined with the sharp growth of logistics costs and shift in inventory-to-sales ratios suggest that a volume of inventory is moving through supply chains at a high velocity. Evidence of the velocity is present in the secondary (or aftermarket) market, which was up $40 billion in 2020 to an all-time record of $671 billion—equivalent to 3% of U.S. gross domestic product (GDP).
This velocity is also reflected in the tightening capacity and rising costs presented in the figure. In the history of the LMI, warehouse capacity had never registered as contracting until March 2020. Since then, it has only registered growth once, in August 2020. Transportation capacity, after a brief spike in Spring 2020 during the height of lockdowns, has also contracted for the last year of readings. This lack of available capacity has led to a spike in logistics costs, with transportation prices above 80.0 on the index for a full year and both inventory and warehouse costs setting all-time index highs multiple times over the last year, including in June 2021.
The high costs of warehousing and transportation are relevant here because they directly impact the ability of firms to maintain a constant level of supply and meet customer demand. The lack of available transportation has impacted both international and domestic supply. There are stories of some low-margin items being pushed back to later sailings multiple times due to a lack of ocean shipping capacity. In some cases, this has doubled or tripled lead times for international shipping and increased the costs by a factor of 10. Demand for international shipping has led to the Port of Los Angeles setting an all-time record for imports for the year ending on June 30, exceeding 10 million TEUs (twenty-foot equivalent units) for the first time ever.6 This record-breaking volume has led to well-documented delays at the ports, with ships waiting weeks to be unloaded instead of days.
A similar capacity crunch exists domestically. The benchmarking and analytics company FreightWaves’ Tender Rejection Index, which tracks how many potential truckloads (tenders) are being rejected, has hovered around 25% since Fall 2020. This figure indicates that for every four loads that need to be moved, only three are being picked up. Rejected tenders have led to further shipping delays as well as spot rates increasing 67% for dry vans and 63% for flatbeds year-over-year. As a result of all these delays, firms have had a tough time managing inventory levels. Instead of getting a consistent stream of just-in-time (JIT) inventory flowing in at a level they can handle, inventory arrives in waves with nothing coming in for weeks and then big spikes suddenly overwhelming capacity.7
Digging out of this hole will take time. When asked to predict logistics activity over the next 12 months, LMI respondents predicted high levels of growth for warehouse and inventory costs, as well as overall inventory levels. (See Figure 2.)
Fortunately, there is some hope on the horizon, as respondents also predict growth in both available warehouse and transportation capacity over the next year. The levels of predicted growth are moderate, but they would be a relief after the last 15 months of contraction in available logistics capacity. This hope is further bolstered by the fact that LMI respondents have predicted future movements for the index with approximately 90% accuracy.
Post-pandemic strategies
Firms have gone through an unprecedented year. After the screeching halt to business as usual in 2020 and the fast restart of the economy, it is interesting to observe the different strategies firms are using to manage their inventory. For instance, some firms have moved away from long-held JIT strategies, even in industries that are JIT stalwarts, such as automotive and grocery. Grocery stores began stocking “pandemic pallets” of essential nonperishable items last year to deal with panic-buying associated with the various waves of viral outbreaks. Auto manufacturers have engaged in stock-piling and forward-buying as a way to avoid the disruptions that plagued them over the last year. Toyota outsold General Motors in the U.S. for the first time in Q2 2021 largely because they had a ready reserve of semiconductors, which allowed them to produce more vehicles.8 Of course, there can be downsides to this approach. In classic bullwhip fashion, there is now a glut of items like toilet paper and hand sanitizer that were overproduced to meet last year’s shortages.
It seems clear from the most recent indicators that consumers will not forget the lessons of the pandemic. It is important that firms do not forget these lessons either. Supply managers have always struggled to balance potential inventory shortages with overstocks. That has been even more difficult this year due to the wild fluctuations in demand. However, it has not been impossible. Many firms have reported some of their best years ever, despite the uncertain times. The companies that have been most successful over the last year are the ones with more resilient supply networks that have allowed them to adapt more quickly.
The emergence of the Delta variant epitomizes the cycle of disruptions that supply chains will always have to deal with. The firms that are the most flexible and can most deftly manage their inventory will be in the best position to deal with them.
Author’s note:For more insights like those presented above, see the LMI reports posted the first Tuesday of every month at: www.the-lmi.com.
ReposiTrak, a global food traceability network operator, will partner with Upshop, a provider of store operations technology for food retailers, to create an end-to-end grocery traceability solution that reaches from the supply chain to the retail store, the firms said today.
The partnership creates a data connection between suppliers and the retail store. It works by integrating Salt Lake City-based ReposiTrak’s network of thousands of suppliers and their traceability shipment data with Austin, Texas-based Upshop’s network of more than 450 retailers and their retail stores.
That accomplishment is important because it will allow food sector trading partners to meet the U.S. FDA’s Food Safety Modernization Act Section 204d (FSMA 204) requirements that they must create and store complete traceability records for certain foods.
And according to ReposiTrak and Upshop, the traceability solution may also unlock potential business benefits. It could do that by creating margin and growth opportunities in stores by connecting supply chain data with store data, thus allowing users to optimize inventory, labor, and customer experience management automation.
"Traceability requires data from the supply chain and – importantly – confirmation at the retail store that the proper and accurate lot code data from each shipment has been captured when the product is received. The missing piece for us has been the supply chain data. ReposiTrak is the leader in capturing and managing supply chain data, starting at the suppliers. Together, we can deliver a single, comprehensive traceability solution," Mark Hawthorne, chief innovation and strategy officer at Upshop, said in a release.
"Once the data is flowing the benefits are compounding. Traceability data can be used to improve food safety, reduce invoice discrepancies, and identify ways to reduce waste and improve efficiencies throughout the store,” Hawthorne said.
Under FSMA 204, retailers are required by law to track Key Data Elements (KDEs) to the store-level for every shipment containing high-risk food items from the Food Traceability List (FTL). ReposiTrak and Upshop say that major industry retailers have made public commitments to traceability, announcing programs that require more traceability data for all food product on a faster timeline. The efforts of those retailers have activated the industry, motivating others to institute traceability programs now, ahead of the FDA’s enforcement deadline of January 20, 2026.
Inclusive procurement practices can fuel economic growth and create jobs worldwide through increased partnerships with small and diverse suppliers, according to a study from the Illinois firm Supplier.io.
The firm’s “2024 Supplier Diversity Economic Impact Report” found that $168 billion spent directly with those suppliers generated a total economic impact of $303 billion. That analysis can help supplier diversity managers and chief procurement officers implement programs that grow diversity spend, improve supply chain competitiveness, and increase brand value, the firm said.
The companies featured in Supplier.io’s report collectively supported more than 710,000 direct jobs and contributed $60 billion in direct wages through their investments in small and diverse suppliers. According to the analysis, those purchases created a ripple effect, supporting over 1.4 million jobs and driving $105 billion in total income when factoring in direct, indirect, and induced economic impacts.
“At Supplier.io, we believe that empowering businesses with advanced supplier intelligence not only enhances their operational resilience but also significantly mitigates risks,” Aylin Basom, CEO of Supplier.io, said in a release. “Our platform provides critical insights that drive efficiency and innovation, enabling companies to find and invest in small and diverse suppliers. This approach helps build stronger, more reliable supply chains.”
Logistics industry growth slowed in December due to a seasonal wind-down of inventory and following one of the busiest holiday shopping seasons on record, according to the latest Logistics Managers’ Index (LMI) report, released this week.
The monthly LMI was 57.3 in December, down more than a percentage point from November’s reading of 58.4. Despite the slowdown, economic activity across the industry continued to expand, as an LMI reading above 50 indicates growth and a reading below 50 indicates contraction.
The LMI researchers said the monthly conditions were largely due to seasonal drawdowns in inventory levels—and the associated costs of holding them—at the retail level. The LMI’s Inventory Levels index registered 50, falling from 56.1 in November. That reduction also affected warehousing capacity, which slowed but remained in expansion mode: The LMI’s warehousing capacity index fell 7 points to a reading of 61.6.
December’s results reflect a continued trend toward more typical industry growth patterns following recent years of volatility—and they point to a successful peak holiday season as well.
“Retailers were clearly correct in their bet to stock [up] on goods ahead of the holiday season,” the LMI researchers wrote in their monthly report. “Holiday sales from November until Christmas Eve were up 3.8% year-over-year according to Mastercard. This was largely driven by a 6.7% increase in e-commerce sales, although in-person spending was up 2.9% as well.”
And those results came during a compressed peak shopping cycle.
“The increase in spending came despite the shorter holiday season due to the late Thanksgiving,” the researchers also wrote, citing National Retail Federation (NRF) estimates that U.S. shoppers spent just short of a trillion dollars in November and December, making it the busiest holiday season of all time.
The LMI is a monthly survey of logistics managers from across the country. It tracks industry growth overall and across eight areas: inventory levels and costs; warehousing capacity, utilization, and prices; and transportation capacity, utilization, and prices. The report is released monthly by researchers from Arizona State University, Colorado State University, Rochester Institute of Technology, Rutgers University, and the University of Nevada, Reno, in conjunction with the Council of Supply Chain Management Professionals (CSCMP).
As U.S. small and medium-sized enterprises (SMEs) face an uncertain business landscape in 2025, a substantial majority (67%) expect positive growth in the new year compared to 2024, according to a survey from DHL.
However, the survey also showed that businesses could face a rocky road to reach that goal, as they navigate a complex environment of regulatory/policy shifts and global market volatility. Both those issues were cited as top challenges by 36% of respondents, followed by staffing/talent retention (11%) and digital threats and cyber attacks (2%).
Against that backdrop, SMEs said that the biggest opportunity for growth in 2025 lies in expanding into new markets (40%), followed by economic improvements (31%) and implementing new technologies (14%).
As the U.S. prepares for a broad shift in political leadership in Washington after a contentious election, the SMEs in DHL’s survey were likely split evenly on their opinion about the impact of regulatory and policy changes. A plurality of 40% were on the fence (uncertain, still evaluating), followed by 24% who believe regulatory changes could negatively impact growth, 20% who see these changes as having a positive impact, and 16% predicting no impact on growth at all.
That uncertainty also triggered a split when respondents were asked how they planned to adjust their strategy in 2025 in response to changes in the policy or regulatory landscape. The largest portion (38%) of SMEs said they remained uncertain or still evaluating, followed by 30% who will make minor adjustments, 19% will maintain their current approach, and 13% who were willing to significantly adjust their approach.
Specifically, the two sides remain at odds over provisions related to the deployment of semi-automated technologies like rail-mounted gantry cranes, according to an analysis by the Kansas-based 3PL Noatum Logistics. The ILA has strongly opposed further automation, arguing it threatens dockworker protections, while the USMX contends that automation enhances productivity and can create long-term opportunities for labor.
In fact, U.S. importers are already taking action to prevent the impact of such a strike, “pulling forward” their container shipments by rushing imports to earlier dates on the calendar, according to analysis by supply chain visibility provider Project44. That strategy can help companies to build enough safety stock to dampen the damage of events like the strike and like the steep tariffs being threatened by the incoming Trump administration.
Likewise, some ocean carriers have already instituted January surcharges in pre-emption of possible labor action, which could support inbound ocean rates if a strike occurs, according to freight market analysts with TD Cowen. In the meantime, the outcome of the new negotiations are seen with “significant uncertainty,” due to the contentious history of the discussion and to the timing of the talks that overlap with a transition between two White House regimes, analysts said.