DeUnemployment  ·  Data library

How much of the market is old — and still being served

Counted on our own crawl archive: how many postings are old, and how many of those we still re-see within 7 days.

Key figures

Measure
Postings older than 90 days33.6%crawl archive, this edition
…of those, still re-crawled within 7 days50.79%our pub×seen signal
Old and still re-crawled (all postings)17.07%
Re-crawled within 7 days (all postings)46.98%

Frequently asked

What is the ghost index?

The share of postings older than 90 days (33.6%) and how many of those our crawler still re-sees within 7 days (50.79%).

Which sample is this measured on?

Our crawl archive for the current edition, full pass, not a sample. The listing-age page reports the report-pipeline sample separately.

Does an old posting mean the job is fake?

No. We measure listing age and re-crawl activity — we do not claim a posting is fake or already filled.

Sources & citation. Measured over the September 2026 edition record set — full-corpus pass (measured 2026-09-15), not a sample — and 25,080 probed links. The index holds 7,415,865 postings, 3,624,739 of them live with a full description. License CC BY 4.0. Data: JSON · CSV · data health · methodology.
Press, research and custom cuts: [email protected] · Cite as: DeUnemployment, “Ghost index: old postings still being re-crawled — 2026-09-20”, https://deunemployment.com/data/ghost-index (2026-09-20).

Need a different cut? Every figure on this page comes from one index, so we can extract almost any slice on request — a city, a role, an industry, a time window, or a comparison between platforms. Tell us what you need at [email protected] and we will pull it, publish it with its method, and hand you the numbers. All we ask in return is a citation.

More data

“Still listed” is a listing-age measure from the source publish date, not a verification that a role is open; link liveness is measured separately. The percentages are the September 2026 edition (full pass, measured 2026-09-15); the index counts are rebuilt by every nightly update, most recently 2026-09-20. Page generated 2026-09-21.