Alpha and Omega Semiconductor Ltd (AOSL)

Pretax margin

Mar 31, 2025 Dec 31, 2024 Sep 30, 2024 Jun 30, 2024 Mar 31, 2024 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
Earnings before tax but after interest (EBT) (ttm) US$ in thousands -17,997 -17,775 -13,735 -2,643 606 -4,379 4,438 19,712 35,009 85,607 497,223 495,070 498,802 479,095 73,203 60,224 37,413 10,531 -6,683 -17,909
Revenue (ttm) US$ in thousands 680,974 666,399 658,528 657,274 657,503 640,003 663,478 691,321 723,755 794,434 798,993 777,552 760,902 726,875 692,386 656,902 601,988 539,628 498,658 464,909
Pretax margin -2.64% -2.67% -2.09% -0.40% 0.09% -0.68% 0.67% 2.85% 4.84% 10.78% 62.23% 63.67% 65.55% 65.91% 10.57% 9.17% 6.21% 1.95% -1.34% -3.85%

March 31, 2025 calculation

Pretax margin = EBT (ttm) ÷ Revenue (ttm)
= $-17,997K ÷ $680,974K
= -2.64%

The pretax margin of Alpha and Omega Semiconductor Ltd has exhibited notable fluctuations over the specified period. During the fiscal year ending June 30, 2020, the margin was negative at -3.85%, indicating that the company's pre-tax earnings were insufficient to cover its expenses, resulting in a loss before taxes. This negative trend persisted into September 2020, with the margin improving to -1.34%, yet remaining in negative territory.

A significant turnaround is observed starting from the fiscal quarter ending December 31, 2020, when the pretax margin transitioned into positive territory at 1.95%. The margins continued to improve steadily through 2021, reaching 6.21% in the March quarter, 9.17% in June, and further to 10.57% in September of the same year. The most pronounced divergence occurred during the quarter ending December 31, 2021, when the pretax margin surged dramatically to 65.91%. This exceptional increase suggests a substantial improvement in profitability, possibly due to operational efficiencies, favorable market conditions, or extraordinary items.

Throughout 2022, the margin remained high, with values of 65.55% and 63.67% in the March and June quarters respectively, followed by a slight decline but still robust levels at 62.23% in September. By the end of 2022, in December, the margin decreased sharply to 10.78%, reflecting a significant contraction in profitability, possibly due to market or company-specific challenges.

In 2023, the pretax margin continued to decline, reaching 4.84% in March and then decreasing further to 2.85% in June and 0.67% in September. A reversal into negative territory ensued towards the end of 2023, with the margin at -0.68% during December and further declines recorded in early 2024, culminating in -2.64% by March 2025. The consistent trend indicates a shift from prior periods of high profitability to ongoing struggles in maintaining positive pre-tax earnings, with margins turning consistently negative in recent quarters.

Overall, the company's pretax margin overlay highlights a trajectory characterized initially by deterioration from losses to substantial profitability, followed by a period of sustained high margins, and subsequently a pronounced decline into negative margins in recent periods. This pattern suggests significant changes in operational performance, market dynamics, or cost structures impacting profitability over time.