Alpha and Omega Semiconductor Limited
DE ˙ DB ˙ BMG6331P1041
42,83 € ↓ −0,46 (−1,06%)
2026-06-05
DELAT PRIS
SecurityDE:AOY / Alpha and Omega Semiconductor Limited
InstitutionCitigroup Inc
Latest Disclosed Ownership6,769 shares
Latest Disclosed Value $ 150,001
Citigroup Inc reports 22.35% decrease in ownership of AOY / Alpha and Omega Semiconductor Limited

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 6,769 shares of Alpha and Omega Semiconductor Limited (DE:AOY) valued at $122,790 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 8,717 shares of Alpha and Omega Semiconductor Limited. This represents a change in shares of -22.35% during the quarter. The current value of the position is $289,916 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-11 2026-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 6,769 -1,948 -22.35 150 -12.79 0.0000
2026-02-13 2025-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 8,717 -3,056 -25.96 173 -47.72 0.0001
2025-11-10 2025-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 11,773 -14,195 -54.66 329 -50.60 0.0001
2025-08-11 2025-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 25,968 -11,683 -31.03 666 -28.85 0.0003
2025-05-12 2025-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 37,651 -451 -1.18 936 -33.62 0.0005
2025-02-12 2024-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 38,102 2,337 6.53 1,411 6.25 0.0008
2024-11-12 2024-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 35,765 17,040 91.00 1,328 89.84 0.0008
2024-08-12 2024-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 18,725 -1,438 -7.13 700 57.43 0.0004
2024-05-10 2024-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 20,163 1,819 9.92 444 -7.11 0.0003
2024-02-09 2023-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 18,344 3,731 25.53 478 9.63 0.0003
2023-12-06 2023-09-30 13F/A-1 ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 14,613 -7,687 -34.47 436 -40.36 0.0003
2023-11-09 2023-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 14,613 -7,687 436 0.0001
2023-08-10 2023-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 22,300 4,098 22.51 731 49.18 0.0005
2023-05-11 2023-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 18,202 -2,749 -13.12 491 -18.06 0.0003
2023-02-09 2022-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 20,951 -3,261 -13.47 599 -19.73 0.0005
2022-11-10 2022-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 24,212 4,742 24.36 745 14.79 0.0005
2022-08-10 2022-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 19,470 6,196 46.68 649 -10.61 0.0005
2022-05-12 2022-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 13,274 -1,728 -11.52 726 -20.13 0.0004
2022-02-10 2021-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 15,002 8,768 140.65 909 363.78 0.0005
2021-11-10 2021-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 6,234 2,815 82.33 196 88.46 0.0001
2021-08-10 2021-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 3,419 1,886 123.03 104 108.00 0.0001
2021-05-13 2021-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 1,533 -2,585 -62.77 50 -48.45 0.0000
2021-02-11 2020-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 4,118 2,996 267.02 97 592.86 0.0001
2020-11-12 2020-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 1,122 -1,657 -59.63 14 -53.33 0.0000
2020-08-12 2020-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 2,779 -3,936 -58.62 30 -30.23 0.0000
2020-05-12 2020-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 6,715 1,622 31.85 43 -37.68 0.0000
2020-02-12 2019-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 5,093 2,353 85.88 69 102.94 0.0000
2019-11-08 2019-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 2,740 -2,364 -46.32 34 -29.17 0.0000
2019-08-12 2019-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 5,104 -2,921 -36.40 48 -48.39 0.0000
2019-05-13 2019-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 8,025 2,415 43.05 93 63.16 0.0001
2019-02-12 2018-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 5,610 143 2.62 57 -9.52 0.0001
2018-11-13 2018-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 5,467 -3,304 -37.67 63 -49.60 0.0001
2018-08-10 2018-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 8,771 -12,144 -58.06 125 -61.42 0.0001
2018-05-11 2018-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 20,915 -13,179 -38.65 324 -41.94 0.0003
2018-02-12 2017-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 34,094 13,711 67.27 558 66.07 0.0004
2017-11-13 2017-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 20,383 9,428 86.06 336 84.62 0.0003
2017-08-11 2017-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 10,955 -4,459 -28.93 182 -31.32 0.0002
2017-05-12 2017-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 15,414 -15,466 -50.08 265 -59.67 0.0002
2017-02-10 2016-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 30,880 23,839 338.57 657 329.41 0.0006
2016-11-10 2016-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 7,041 -7 -0.10 153 56.12 0.0001
2016-08-12 2016-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 7,048 -23,349 -76.81 98 -72.78 0.0001
2016-05-13 2016-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 30,397 20,834 217.86 360 309.09 0.0004
2016-02-12 2015-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 9,563 9,559 238,975.00 88 0.0001
2015-11-13 2015-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 4 -4,719 -99.92 0 -100.00
2015-08-13 2015-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 4,723 -3,281 -40.99 41 -43.06 0.0000
2015-05-14 2015-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 8,004 -5,759 -41.84 72 -40.98 0.0001
2015-02-17 2014-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 13,763 8,922 184.30 122 165.22 0.0001
2014-11-14 2014-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 4,841 -13,727 -73.93 46 -73.26 0.0000
2014-08-14 2014-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 18,568 6,802 57.81 172 100.00 0.0002
2014-05-15 2014-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 11,766 4,375 59.19 86 50.88 0.0001
2014-02-14 2013-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 7,391 3,021 69.13 57 58.33 0.0001
2013-11-14 2013-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 4,370 -5,341 -55.00 36 -51.35 0.0000
2013-08-14 2013-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 9,711 9,711 74 0.0001
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.