Cash dairy markets opened the week mixed at the Chicago Mercantile Exchange on Monday, with butter taking the sharpest move among the traded products.

Butter fell $0.03 to settle at $1.37 per pound. The decline came on actual volume: 19 loads traded hands in a range from $1.3475 to $1.37. That spread of just over 2 cents between the low and the settled top of the range indicates sellers were willing to clear inventory down to near the final print.

The rest of the dairy complex held its ground, though largely without transactions to confirm the prices.

Dry whey was unchanged at $0.8050 per pound. No sales were reported.

Forty-pound cheese blocks were unchanged at $1.3075 per pound. No sales were reported.

Cheese barrels were also unchanged at $1.4525 per pound. No sales were reported there either.

Nonfat dry milk moved higher, per the session's reported results — the lone gain among the quoted products on a day when butter provided the only significant downward pressure.

The trading pattern matters for how producers read Monday's session. A market where cheese blocks and barrels post no sales is a market where the posted prices are carryover indications rather than fresh discoveries. The barrel-block spread, which stood at $0.1450 in barrels' favor at Monday's marks, remains wide by historical standards, a factor Class III component pricing will reflect as milk checks are calculated.

Butter's 3-cent drop was the day's only move backed by real turnover. With 19 trades reported, the $1.37 print carries more weight as a price signal than the unchanged quotations elsewhere in the complex. For dairy producers and cooperative handlers watching milk margins, the pullback in butterfat values — if it extends across subsequent sessions — would pressure the butterfat component of the milk check, even as the fat-free side of the ledger showed slight strength in nonfat dry milk.

Monday's quiet tone in cheese follows a stretch in which spot blocks have traded well below the $2 mark, keeping Class III values under pressure relative to the peaks of recent cycles. Producers and market watchers will look to the next sessions' Global Dairy Trade events, USDA dairy product and cold storage reports, and the Agriculture Department's milk production estimates to test whether Monday's mixed, low-volume session reflects hesitation or a genuine consolidation of the current price levels.