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
InstitutionUBS Group AG
Latest Disclosed Ownership188,740 shares
Latest Disclosed Value $ 4,182,478
UBS Group AG reports 13.07% decrease in ownership of AOY / Alpha and Omega Semiconductor Limited

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 188,740 shares of Alpha and Omega Semiconductor Limited (DE:AOY) valued at $3,423,744 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 217,121 shares of Alpha and Omega Semiconductor Limited. This represents a change in shares of -13.07% during the quarter. The current value of the position is $8,083,734 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-05 2026-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 188,740 -28,381 -13.07 4,182 -2.77 0.0001
2026-01-29 2025-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 217,121 150,254 224.71 4,301 130.12 0.0007
2025-11-13 2025-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 66,867 44,931 204.83 1,870 232.56 0.0003
2025-08-14 2025-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 21,936 -126,510 -85.22 563 -84.77 0.0001
2025-05-13 2025-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 148,446 45,237 43.83 3,690 -3.43 0.0007
2025-02-14 2024-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 103,209 80,590 356.29 3,822 355.42 0.0007
2024-11-14 2024-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 22,619 -8,707 -27.79 840 -28.29 0.0002
2024-08-14 2024-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 31,326 13,740 78.13 1,171 202.33 0.0003
2024-05-13 2024-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 17,586 -5,795 -24.79 388 -36.45 0.0001
2024-02-09 2023-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 23,381 13,063 126.60 609 98.37 0.0002
2023-11-09 2023-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 10,318 -7,053 -40.60 308 -46.05 0.0001
2023-08-11 2023-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 17,371 7,039 68.13 570 104.68 0.0002
2023-05-12 2023-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 10,332 -5,962 -36.59 278 -40.22 0.0001
2023-02-08 2022-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 16,294 5,958 57.64 466 46.23 0.0002
2022-11-10 2022-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 10,336 6,570 174.46 318 152.38 0.0001
2022-08-10 2022-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 3,766 -20,429 -84.43 126 -90.47 0.0001
2022-05-16 2022-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 24,195 -4,828 -16.64 1,322 -24.80 0.0004
2022-02-14 2021-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 29,023 17,176 144.98 1,758 372.58 0.0005
2021-11-15 2021-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 11,847 -15,663 -56.94 372 -55.50 0.0001
2021-08-13 2021-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 27,510 -44,007 -61.53 836 -64.26 0.0003
2021-05-12 2021-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 71,517 59,243 482.67 2,339 706.55 0.0008
2021-02-11 2020-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 12,274 6,557 114.69 290 297.26 0.0001
2020-11-12 2020-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 5,717 -1,012 -15.04 73 0.00 0.0000
2020-07-31 2020-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 6,729 -2,727 -28.84 73 19.67 0.0000
2020-05-01 2020-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 9,456 -15,269 -61.76 61 -81.90 0.0000
2020-02-14 2019-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 24,725 7,194 41.04 337 56.74 0.0001
2019-11-14 2019-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 17,531 13,923 385.89 215 532.35 0.0001
2019-08-14 2019-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 3,608 3,537 4,981.69 34 3,300.00 0.0000
2019-05-14 2019-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 71 -7,416 -99.05 1 -98.68 0.0000
2019-02-14 2018-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 7,487 -64 -0.85 76 -13.64 0.0000
2018-11-14 2018-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 7,551 5,010 197.17 88 144.44 0.0000
2018-08-14 2018-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 2,541 2,541 36 0.0000
2018-05-15 2018-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 0 -2,289 -100.00 0 -100.00
2018-02-14 2017-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 2,289 785 52.19 37 48.00 0.0000
2017-11-14 2017-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 1,504 1,504 25 0.0000
2017-11-14 2017-06-30 13F/A-1 ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 0 -21,374 -100.00 0 -100.00
2017-11-14 2017-03-31 13F/A-1 ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 21,374 15,880 289.04 368 214.53 0.0002
2017-05-12 2017-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 21,374 15,880 368
2017-02-14 2016-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 5,494 5,494 0.00 117 0.0001
2016-08-12 2016-06-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 0 -1,243 -100.00 0 -100.00
2016-05-12 2016-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 1,243 228 22.46 15 66.67 0.0000
2016-02-16 2015-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 1,015 402 65.58 9 80.00 0.0000
2015-11-13 2015-09-30 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 613 613 0.00 5 0.0000
2015-05-14 2015-03-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 0 -829 -100.00 0 -100.00
2015-02-17 2014-12-31 13F ALPHA & OMEGA SEMICONDUCTOR SHS G6331P104 829 829 7 0.0000
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.