Funnel (GA4), acquisition spend & CAC (Northbeam / Daily Spend Tracker), and the traffic mix — each on its own weekly chart. The through-line: the recent decline is an acquisition story, not a funnel one.
Meta spend held ~$245k/wk Feb–May, then fell to ~$177k the first week of June. Paid-social sessions dropped in lockstep (~92k → ~67k). The traffic decline is mostly fewer Meta dollars.
Blended CAC drifted up all spring and jumped to ~$117 by early June (target <$90). Fewer dollars buying costlier customers — new customers fell ~4,300/wk → ~2,600.
Conversion and add-to-cart have held their range all six months; the June dip is the normal summer slide. The funnel isn't the problem — acquisition volume and cost are.
Spend & CAC series start the week of Feb 9 (when the Daily Spend Tracker's per-channel history begins). Northbeam attribution: Clicks-Only.
Sessions overall, the Meta-driven paid-social line, and the full channel mix. Paid social is the swing factor.
The on-site funnel (GA4). Steady-to-seasonal — confirming the decline lives upstream in acquisition, not here.
Lay the charts side by side and the causal chain is clear: Meta spend pulled back → paid-social sessions fell → total sessions fell → with CAC already climbing ($92→$117), new customers dropped from ~4,300/wk to ~2,600. Meanwhile CVR, add-to-cart, and AOV stayed in their normal ranges. So the six-month decline is an acquisition-efficiency and spend-level story, not a conversion problem.
The lone on-site exception worth a glance: the AOV dip the week of 5/25 (~$36 vs ~$48 norm) — a discount/promo week, not a trend.
Sources: Funnel + traffic = GA4 (property 310751693), weekly Dec 15 – Jun 1. Spend = Daily Spend Tracker spend_long (Northbeam-fed, Clicks-Only), weekly from Feb 9. New customers = Shopify D2C (Daily Spend Tracker customers_daily). Blended CAC = total D2C spend ÷ Shopify new customers (per standard — not Northbeam's attributed counts). 6-month platform composition: Meta 68% of spend ($5.9M of $8.6M). Current partial week (Jun 2+) excluded so no chart ends on a false cliff.
Related: 2026 vs 2025 Benchmark · Shopify checkout break · Funnel Steps W/W.