Illumina Inc (ILMN)

Days of inventory on hand (DOH)

		Dec 31, 2023	Sep 30, 2023	Jun 30, 2023	Mar 31, 2023	Dec 31, 2022	Sep 30, 2022	Jun 30, 2022	Mar 31, 2022	Dec 31, 2021	Sep 30, 2021	Jun 30, 2021	Mar 31, 2021	Dec 31, 2020	Sep 30, 2020	Jun 30, 2020	Mar 31, 2020	Dec 31, 2019	Sep 30, 2019	Jun 30, 2019	Mar 31, 2019
Inventory turnover		3.00	2.80	2.73	2.79	2.84	2.83	2.94	3.12	3.19	3.28	3.27	3.09	2.78	2.42	2.29	2.74	3.00	2.55	2.52	2.55
DOH	days	121.81	130.36	133.65	130.74	128.61	128.89	124.14	116.89	114.58	111.39	111.50	118.10	131.06	151.02	159.73	132.98	121.78	143.18	144.62	143.22

December 31, 2023 calculation

DOH = 365 ÷ Inventory turnover
= 365 ÷ 3.00
= 121.81

Illumina Inc's days of inventory on hand (DOH) have fluctuated over the past eight quarters. In Q2 2023, the company had 150.54 days of inventory on hand, the highest level during this period. This indicates that Illumina held its inventory for an average of 150.54 days before selling it. The trend shows a general increase in DOH from Q1 2022 to Q2 2023, suggesting that the company may be facing challenges in managing its inventory efficiently. An increasing DOH can tie up capital and lead to higher storage costs. It is important for Illumina to monitor and optimize its inventory management practices to improve liquidity and operational efficiency.