Walmart Marketplace Grew 50% Last Quarter. If You Are Not On It Yet, You Are Late.

Walmart reported Q2 FY27 on August 20, 2026, and the line that matters for sellers is buried under the headline revenue number. Walmart U.S. marketplace net sales grew more than 50% year over year. Not the total business. The third-party marketplace you can list on today.

The recommendation: if Walmart is currently a side channel you check monthly, move it into your Q4 plan as a real channel with a real owner and a real budget. If you are not on it at all, the window where being early still carries an advantage is closing.

The numbers, straight from the release

Walmart’s own Q2 FY27 materials, for the quarter ended July 31, 2026, report:

• Total revenue up 5.9% to $187.9 billion
• Global eCommerce up 23%, Walmart U.S. eCommerce up 24%
• Walmart U.S. marketplace net sales up more than 50%
• Nearly 50% of marketplace volume flowed through fulfillment services
• Global advertising up 38%, with Walmart Connect in the U.S. up 43% excluding VIZIO
• eCommerce now roughly 23% of the Walmart U.S. sales mix
• Full-year FY27 guidance raised

Walmart also said it expanded the marketplace platform into markets outside the U.S. during the quarter, on the back of opening Walmart.com to international customers with shipping to Mexico in June.

What 50% marketplace growth actually tells you

A 50% growth rate on third-party sales while total company revenue grows 5.9% means Walmart is deliberately shifting mix toward marketplace. That is not a passive trend. Marketplace, fulfillment services, membership and advertising are the pieces Walmart named as improving the economics of the company, which means they are the pieces Walmart will keep investing behind.

For a seller, high growth in the channel is not the same thing as high growth for you. Growth that fast usually means assortment is expanding faster than demand in any given category, so the competitive set on your listing gets denser every quarter. Being early is worth something. Being early two years ago was worth more.

The honest read is that Walmart is still meaningfully less crowded than Amazon in most categories, and the sellers capturing outsized share right now are the ones treating it as a real operation rather than a copy-paste of their Amazon catalog.

Half the marketplace is running through WFS

Nearly 50% of marketplace volume flowing through Walmart Fulfillment Services is the operational signal in this report. Walmart has been pushing WFS hard with fee credits and next-day coverage in major metros, and sellers are taking it.

That matters because the tag and the speed badge affect conversion, and because it changes your unit economics. If you are seller-fulfilled on Walmart and competing against WFS listings in the same category, you are fighting a delivery-promise gap, not just a price gap. Run the math on your top 20 SKUs before Q4 inbound windows tighten. WFS is not automatically the right answer, especially on heavy or slow-turning items, but if you have not modeled it in the last two quarters you are working off stale assumptions.

Walmart Connect at 43% is the cost warning

Walmart Connect growing 43% is usually written up as good news for Walmart. Read it as a cost signal for you.

Retail media revenue grows when more advertisers bid against each other for the same finite ad inventory. Auction density is rising. The cheap Walmart CPCs that made the channel attractive two years ago are compressing, and they will compress faster into Q4 when everyone’s holiday budgets land at once.

Two practical implications. First, if your Walmart ad efficiency is currently good, lock in the share you can buy now rather than waiting until November when the auction is at its worst. Second, ad efficiency is going to matter more than it used to on this channel, which means search-term hygiene, negative keywords and campaign structure stop being optional. The days of Walmart forgiving sloppy campaign management with cheap clicks are ending.

What to do in the next 30 days

1. Pull your Walmart revenue as a percentage of total marketplace revenue. If the channel is growing over 50% and your Walmart share is flat or shrinking, you are losing share in a growing market.
2. Model WFS against seller-fulfilled on your top 20 SKUs using current fees, not last year’s. Include the conversion lift from the delivery badge, then decide SKU by SKU.
3. Audit listing quality on your Walmart catalog. Most brands port Amazon content over and never fix the attributes Walmart actually ranks on. That is the cheapest lift available.
4. Set your Q4 Walmart Connect budget now and start building share before holiday bidding compresses efficiency.
5. Assign an owner. Channels without a named owner do not grow 50%, regardless of what the platform does.

The tradeoff worth naming

None of this argues for pulling budget out of Amazon. Amazon is still the larger pool for nearly every category, and a Walmart push that starves your Amazon operation is a bad trade. The case here is about marginal dollars and marginal attention. If you have incremental budget for Q4, the growth rate and the auction density on Walmart make it a better place for the next dollar than the fiftieth dollar into an already saturated Amazon campaign.

The risk is real too. Walmart’s operational requirements are stricter than most sellers expect on the way in, listing quality enforcement has tightened through 2026, and a half-built Walmart presence can cost you more in suppressed listings and performance flags than it returns.

If you want your Walmart channel assessed properly, with the WFS math run on your actual SKUs and a Q4 Connect plan built before the auction tightens, a strategy assessment is the fastest way to get started.