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Metrics type: Key Metrics • Category: Ad Platform

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At a glance

Spend on MediaMath campaigns that recorded zero conversions across the entire window. Campaign-level twin of Wasted Spend. MediaMath caveat (May 26): post-restructure pixel instability can artificially classify whole campaigns as zero-conv when the issue is platform-side. Always check pixel health before pausing or restructuring on this connector.

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Calculation

Calculated automatically from your MediaMath data. See the At a glance summary above for what the metric tracks and the worked example below for a typical reading.

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Worked example

The same enterprise homeware brand. Window 02 Apr 26 to 01 May 26. What’s interesting:
  1. CTV “Outdoor Furniture” test ($1,800) is the bigger problem. 22 days CTV with no view-through conversions. Action sequence on MediaMath specifically: (1) Check pixel health for the CTV view-through tag during the period; if outage detected, revisit at next pixel-stable window. (2) Check view-through window setting; should be 7 days for CTV test campaigns. (3) Only after both confirmed healthy, treat as audience or creative issue and pause.
  2. Display creative C test ($620) at 14 days zero-conv but 14 days is the borderline threshold. Wait another 7 days, then act if still zero. The 14-day mark is when DSP zero-conv genuinely becomes diagnostic; before then, BidCore/Brain learning phase noise dominates.
  3. The new Audio test (4 days old) is excluded by design.
  4. 3.4% zero-conv is healthy band. Issue is concentrated in two test campaigns; not structural.
  5. MediaMath-specific: cross-reference T1 platform status notifications. If MediaMath had a pixel issue during the test campaigns’ windows, the zero-conv read may be a false positive. Check before acting.
Quick sanity tests:
  • Single campaign zero-conv with high impressions = pixel/goal misconfig OR audience mismatch. On MediaMath, pixel first.
  • Multiple campaigns zero-conv simultaneously = global pixel issue (likely on this connector).
  • Account-wide conversions also dropped on same date = global outage; very likely platform-side.
  • CTV campaign zero-conv = view-through window check first.
  • Resolved post-pixel-fix = pixel issue, not campaign issue.

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Sibling cards merchants should reference together

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Reconciling against the vendor’s own dashboard

Where to look in MediaMath T1: T1 → Reports → Campaigns, sort by Conversions ascending. Campaigns with zero conversions and >7 days activity are the action set. MediaMath-specific caveat: If T1 UI shows the same zero-conv campaigns as this card AND the conversions did fire on the merchant’s order-confirmation page, the gap is a pixel-ingest issue, not a campaign issue. Verify via Google Tag Assistant or the merchant’s own analytics during the period. Why our number may legitimately differ: Cross-connector reconciliation:

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Known limitations / merchant FAQs

Should I just pause every zero-conversion campaign? No, especially on MediaMath. Pixel health check first, then standard DSP diagnosis (campaign config, audience, creative, landing page). The post-restructure pixel instability means MediaMath has a higher false-positive rate than peer DSPs; pausing campaigns that were actually converting (but pixel didn’t fire) destroys real value. A campaign has been zero-conv for 30 days, what now? Same rule as on every DSP: pause and restructure. But on MediaMath, first verify pixel health was OK across the 30-day window. If pixel was unstable and the campaign was running, the zero-conv read may be a 30-day false positive; the campaign may actually have been performing. Why does this card exclude campaigns under 7 days? Brain’s learning phase needs 50, 100 conversions; for fresh campaigns, 7 days is the minimum where zero-conv becomes diagnostic. My CTV PMP shows zero conversions but I expect long view-through, what’s wrong? Check view-through window. CTV with 1-day view-through typically shows zero-conv on PMP campaigns; CTV converts on 3, 7 day delay. Set view-through to 7 days. My audio campaign shows zero conversions, is it broken? Same issue as on any DSP: audio is hard to attribute. Look for Branded Search lift, Direct traffic increase, or Email signup increase during the audio flight. If these absent, pause; if present, working but incremental rather than direct. The same campaign has high impressions and zero conversions, what’s most likely on MediaMath? Order: (1) MediaMath pixel issue; (2) Pixel goal misconfig in T1; (3) Audience mismatch; (4) Landing page broken; (5) Creative issue. Same diagnostic tree as other DSPs but reorder priorities given platform context. Can I trust the figure for “today” or “this week”? Use 30-day for action. 7-day is too noisy on DSP generally and especially on MediaMath given longer ingest lag. Why doesn’t MediaMath auto-pause zero-conv campaigns? Same reason peer DSPs don’t: long-tail conversion lag means today’s “zero-conv” can be tomorrow’s “1, 2 conversions”. Auto-pause would kill genuine campaigns. **My retargeting campaign shows zero-conv but the spend is only 300,shouldIworry?∗∗Less.Smallsamplesproducestatisticalnoise.Worryaboutzero−convat300, should I worry?** Less. Small samples produce statistical noise. Worry about zero-conv at 1,000+ spend. Should I migrate the campaigns flagged here to TTD before restructuring on MediaMath? That’s a strategic call. If MediaMath ROAS is broadly OK but specific campaigns are persistently zero-conv on a stable pixel, the campaigns themselves are the issue (audience/creative/goal); migrating them to TTD without fixing the underlying issue replicates the failure. Fix on MediaMath first, migrate later if migration is in plan.

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Tracked live in Vortex IQ Nerve Centre

Zero-Conversion Spend is one of hundreds of KPI pulses Vortex IQ tracks across MediaMath and 70+ other ecommerce connectors. Nerve Centre runs the detection layer; Vortex Mind investigates the cause when something moves; Ask Viq lets you interrogate any number in plain English. Start for free or book a demo to see this metric running on your own data.