Illumina reported $933M of remaining performance obligations at 27 Sep 2026, up 25% from a year earlier and down 7% from the previous quarter. That is 0.2 years of trailing revenue already under contract. Book-to-bill last quarter: 0.94.
Net new backlog added in the latest quarter: -$67.0M.
Over the last twelve months it turned about 521% of its opening backlog into revenue (12-month conversion).
76% of the backlog is due within the next twelve months.
Customer prepayments (contract liabilities) cover 34.2% of the backlog.
Twelve-month book-to-bill: 1.04, i.e. 1.04 of new orders for every 1 of revenue recognised.
Backlog growth minus revenue growth: +19 points — orders are running ahead of revenue.
By backlog size it ranks 245th among US filers the cockpit tracks.
Illumina backlog history
Remaining performance obligations at each quarter end (bars) against trailing twelve-month revenue (line).
Amounts in USD. Source: SEC XBRL filings.
Quarter end
Backlog (RPO)
TTM revenue
Coverage
Customer prepayments
27 Sep 2026
$933M
$4.54B
0.2 yrs
$319M
28 Jun 2026
$1.00B
$4.49B
0.2 yrs
$333M
29 Mar 2026
$1.10B
$4.39B
0.3 yrs
$344M
28 Dec 2025
$738M
$4.34B
0.2 yrs
$346M
28 Sep 2025
$747M
$4.29B
0.2 yrs
$307M
29 Jun 2025
$862M
$4.28B
0.2 yrs
$324M
30 Mar 2025
$891M
$4.34B
0.2 yrs
$329M
29 Dec 2024
$657M
$4.37B
0.2 yrs
$327M
29 Sep 2024
$688M
$4.39B
0.2 yrs
$293M
30 Jun 2024
$717M
$4.43B
0.2 yrs
$305M
31 Mar 2024
$796M
$4.49B
0.2 yrs
$324M
31 Dec 2023
$653M
$4.50B
0.1 yrs
$329M
Questions
What is Illumina's backlog?
Illumina reported $933M of remaining performance obligations at 27 Sep 2026, up 25% from a year earlier and down 7% from the previous quarter. That is 0.2 years of trailing revenue already under contract. Book-to-bill last quarter: 0.94.
How fast does Illumina's backlog turn into revenue?
Over the last twelve months Illumina recognised revenue equal to about 521% of the backlog it started each quarter with.
About these numbers
Remaining performance obligations (RPO) are revenue a company has contracted but not yet recognised, as reported in its SEC filings (XBRL tag RevenueRemainingPerformanceObligation). Coverage = backlog ÷ trailing twelve-month revenue. Book-to-bill = (change in backlog + revenue) ÷ revenue. Conversion = revenue recognised ÷ the backlog at the start of each quarter, summed over four quarters. Counterparty values come from company filings and releases.