Diodes Incorporated (DIOD)

Pretax margin

		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
Earnings before tax but after interest (EBT) (ttm)	US$ in thousands	274,467	339,861	387,025	386,397	387,968	402,511	379,143	348,021	307,570	235,320	185,153	143,362	119,200	142,686	158,336	180,091	197,381	180,494	175,919	164,282
Revenue (ttm)	US$ in thousands	1,651,266	1,823,884	1,936,362	1,974,817	1,994,331	1,979,149	1,932,418	1,869,138	1,795,386	1,668,079	1,500,365	1,344,860	1,215,429	1,190,516	1,208,265	1,245,348	1,265,885	1,254,874	1,252,002	1,234,344
Pretax margin		16.62%	18.63%	19.99%	19.57%	19.45%	20.34%	19.62%	18.62%	17.13%	14.11%	12.34%	10.66%	9.81%	11.99%	13.10%	14.46%	15.59%	14.38%	14.05%	13.31%

December 31, 2023 calculation

Pretax margin = EBT (ttm) ÷ Revenue (ttm)
= $274,467K ÷ $1,651,266K
= 16.62%

Diodes, Inc.'s pretax margin has shown fluctuation over the past eight quarters. The pretax margin decreased from Q2 2023 to Q4 2023, reaching 16.73%, which is the lowest level in the provided data set. Prior to this decline, the company experienced a gradual increase in pretax margin from Q1 2023 to Q2 2023.

Comparing the Q4 results to the same quarter in the previous year, Diodes, Inc. exhibited a slight decrease in pretax margin as it dropped from 19.79% in Q4 2022 to 16.73% in Q4 2023.

Overall, while the pretax margin has displayed some variability, it has generally remained above 15% over the past eight quarters, indicating that the company has been able to generate profits before accounting for taxes at a reasonable level relative to its revenue during this period.