Alpha and Omega Semiconductor Limited (AOSL)Â
Largest Insider Buys in Sector
AOSL Stock Price History Chart
AOSL Stock Performance
About Alpha and Omega Semiconductor Limited
Alpha and Omega Semiconductor Limited designs, develops, and supplies power semiconductor products for computing, consumer electronics, communication, and industrial applications in Hong Kong, China, South Korea, the United States, and internationally. It offers power discrete products, including metal-oxide-semiconductor field-effect transistors (MOSFET), SRFETs, XSFET, electrostatic discharge, protected MOSFETs, high and mid-voltage MOSFETs, and insulated gate bipolar transistors for use in smart phone chargers, battery packs, notebooks, desktop and servers, data centers, base stations, graphics card, game boxes, TVs, AC adapters, power supplies, motor control, power tools, e-vehicles, white goods and industrial motor drives, UPS systems, solar inverters, and industrial welding. The company also provides power ICs that deliver power, as well as control and regulate the power management variables, such as the flow of current and level of voltage. Its power ICs are used in flat panel displays, TVs, Notebooks, graphic cards, servers, DVD/Blu-Ray players, set-top boxes, and networking equipment. In addition, the company offers aMOS5 MOSFET for quick charger, adapter, PC power, server, industrial power, telecom, and datacenter applications; and Transient Voltage Suppressors for laptops, televisions, and other electronic devices. Further, it provides EZBuck regulators; SOA MOSFET for hot swap applications; RigidCSP for battery management; and Type-C power delivery protection switches. The company was incorporated in 2000 and is headquartered in Sunnyvale, California.
Insider Activity of Alpha and Omega Semiconductor Limited
Over the last 12 months, insiders at Alpha and Omega Semiconductor Limited have bought $0 and sold $6.33M worth of Alpha and Omega Semiconductor Limited stock.
On average, over the past 5 years, insiders at Alpha and Omega Semiconductor Limited have bought $0 and sold $4.5M worth of stock each year.
There was no buying activity among insiders over the last 12 months.
The last purchase of 480 shares for transaction amount of $4,795 was made by Chang Mike F (Chief Executive Officer) on 2019‑01‑03.
List of Insider Buy and Sell Transactions, Alpha and Omega Semiconductor Limited
| 2025-01-13 | Sale | EVP-WW Sales & Bus Development | 1,242 0.0042% | $35.00 | $43,470 | +6.32% | ||
| 2024-12-12 | Sale | EVP-WW Sales & Bus Development | 1,883 0.0065% | $47.38 | $89,217 | -18.46% | ||
| 2024-12-05 | Sale | director | 5,623 0.021% | $51.27 | $288,287 | -17.47% | ||
| 2024-12-04 | Sale | CFO and Corp Secretary | 31,004 0.1074% | $49.21 | $1.53M | -19.10% | ||
| 2024-12-03 | Sale | EVP-WW Sales & Bus Development | 875 0.0027% | $41.00 | $35,875 | -12.87% | ||
| 2024-12-03 | Sale | director | 12,497 0.0386% | $41.46 | $518,159 | -12.87% | ||
| 2024-10-24 | Sale | Chief Operating Officer | 2,183 0.0074% | $35.49 | $77,475 | 0.00% | ||
| 2024-09-11 | Sale | Chief Operating Officer | 9,346 0.032% | $32.39 | $302,675 | +8.26% | ||
| 2024-08-23 | Sale | director | 3,377 0.0117% | $38.06 | $128,521 | -3.91% | ||
| 2024-08-12 | Sale | CFO and Corp Secretary | 10,000 0.0359% | $35.60 | $355,967 | +5.64% | ||
| 2024-04-22 | Sale | EVP-WW Sales & Bus Development | 1,956 0.0068% | $19.57 | $38,287 | +80.67% | ||
| 2024-03-20 | Sale | EVP-WW Sales & Bus Development | 4,401 0.015% | $20.56 | $90,469 | +63.13% | ||
| 2024-03-13 | Sale | CFO and Corp Secretary | 20,000 0.0715% | $22.67 | $453,418 | +53.90% | ||
| 2024-03-12 | Sale | CFO and Corp Secretary | 20,000 0.0707% | $23.31 | $466,186 | +47.92% | ||
| 2024-03-11 | Sale | CFO and Corp Secretary | 30,000 0.1062% | $23.60 | $707,865 | +46.43% | ||
| 2024-02-14 | Sale | EVP-WW Sales & Bus Development | 14,292 0.0487% | $22.77 | $325,377 | +42.31% | ||
| 2024-01-29 | Sale | Executive Chairman | 30,000 0.106% | $26.91 | $807,384 | +11.27% | ||
| 2024-01-19 | Sale | director | 2,673 0.0096% | $27.34 | $73,080 | +9.00% | ||
| 2024-01-18 | Sale | director | 664 0.0023% | $26.68 | $17,716 | +9.40% | ||
| 2024-01-16 | Sale | EVP-WW Sales & Bus Development | 1,341 0.0048% | $26.16 | $35,081 | +13.70% |
Insider Historical Profitability
| Chang Mike F | Executive Chairman | 4500286 15.5018% | $41.60 | 13 | 18 | +14.44% |
| Liang Yifan | CFO and Corp Secretary | 265175 0.9134% | $41.60 | 0 | 21 | |
| Xue Bing | EVP-WW Sales & Bus Development | 115368 0.3974% | $41.60 | 0 | 29 | |
| Li Wenjun | Chief Operating Officer | 61331 0.2113% | $41.60 | 0 | 2 | |
| Pfeiffer Michael L | director | 61157 0.2107% | $41.60 | 0 | 2 | |
| Chen Claudia | director | 26572 0.0915% | $41.60 | 0 | 1 | |
| Chang Lucas S. | director | 25204 0.0868% | $41.60 | 0 | 3 | |
| Ho Yueh-Se | director | 189583 0.653% | $41.60 | 0 | 12 | |
| SALAMEH MICHAEL J | director | 50340 0.1734% | $41.60 | 4 | 0 | +14.5% |
| Chang Daniel Kuang Ming | Senior VP of Marketing | 46543 0.1603% | $41.60 | 0 | 19 | |
| Grizelj Tony | VP of Power Discrete Product | 28466 0.0981% | $41.60 | 0 | 22 | |
| STEVENS MARK A | director, 10 percent owner | 27384 0.0943% | $41.60 | 3 | 17 | +11.37% |
| SCGF III MANAGEMENT LLC | 10 percent owner | 25962 0.0894% | $41.60 | 0 | 21 | |
| CHEN ROBERT I | director | 10285 0.0354% | $41.60 | 0 | 1 | |
| YILMAZ HAMZA | Chief Technology Officer | 9214 0.0317% | $41.60 | 0 | 1 | |
| BAILEY HOWARD | director | 1229 0.0042% | $41.60 | 1 | 0 | +17.73% |
Institutional Investor Ownership
| BlackRock | $82.82M | 13.09 | 3.76M | -1.57% | -$1.32M | <0.01 | |
| The Vanguard Group | $46.84M | 7.41 | 2.13M | +1.93% | +$885,633.31 | <0.01 | |
| Dimensional Fund Advisors | $46.36M | 7.33 | 2.1M | -0.32% | -$148,681.84 | 0.01 | |
| State Street | $29.21M | 4.62 | 1.33M | +3.82% | +$1.07M | <0.01 | |
| The Manufacturers Life Insurance Company | $24.58M | 3.89 | 1.12M | +2.08% | +$501,101.43 | 0.02 | |
| Wellington Management Company | $15.92M | 2.52 | 722,507 | +107.2% | +$8.24M | <0.01 | |
| Fidelity Investments | $14.74M | 2.33 | 668,698 | +30.21% | +$3.42M | <0.01 | |
| Geode Capital Management | $11.32M | 1.79 | 513,678 | +1.84% | +$204,186.11 | <0.01 | |
| First Eagle Investment Management | $9.84M | 1.56 | 446,542 | +18.91% | +$1.56M | 0.02 | |
| ROYCE & ASSOCIATES INC | $9.16M | 1.45 | 415,412 | +10.46% | +$866,899.28 | 0.08 | |
| Gagnon Securities | $7.28M | 1.15 | 330,504 | -4.1% | -$311,777.83 | 1.81 | |
| PEREGRINE CAPITAL MANAGEMENT INC | $6.52M | 1.03 | 295,652 | +46.76% | +$2.08M | 0.19 | |
| Invesco | $5.9M | 0.93 | 267,603 | +36.66% | +$1.58M | <0.01 | |
| Northern Trust | $5.3M | 0.84 | 240,512 | -4% | -$220,973.02 | <0.01 | |
| B Riley Asset Management Llc | $5.12M | 0.81 | 232,095 | +256.85% | +$3.68M | 2.1 | |
| American Century Investments | $5.1M | 0.81 | 231,311 | +1.55% | +$77,889.35 | <0.01 | |
| Charles Schwab | $4.89M | 0.77 | 222,082 | +24.86% | +$974,432.42 | <0.01 | |
| Uniplan Investment Counsel Inc | $4.76M | 0.75 | 216,021 | +1.63% | +$76,300.83 | 0.39 | |
| Morgan Stanley | $4.52M | 0.71 | 205,029 | -14.47% | -$764,788.14 | <0.0001 | |
| Jacobs Levy Equity Management | $4.39M | 0.7 | 199,369 | +101.83% | +$2.22M | 0.02 | |
| Gagnon Advisors LLC | $4.17M | 0.66 | 189,357 | 0% | +$0 | 4.01 | |
| Citadel Advisors LLC | $3.68M | 0.58 | 166,749 | -8.48% | -$340,473.92 | <0.01 | |
| BNY Mellon | $3.59M | 0.57 | 162,927 | -5.7% | -$217,226.17 | <0.01 | |
| Bridgeway Capital Management | $3.53M | 0.56 | 159,993 | -21.34% | -$956,624.24 | 0.05 | |
| Acuitas Investments, LLC | $2.85M | 0.45 | 129,500 | 0% | +$0 | 1.52 | |
| Renaissance Technologies | $2.77M | 0.44 | 125,700 | -14.02% | -$451,750.20 | <0.01 | |
| Two Sigma Advisers LP | $2.6M | 0.41 | 117,800 | +17.92% | +$394,516.00 | <0.01 | |
| Boothbay Fund Management LLC | $2.5M | 0.4 | 113,365 | +251.89% | +$1.79M | 0.08 | |
| Ameriprise Financial | $2.43M | 0.38 | 110,046 | +11.6% | +$252,071.50 | <0.01 | |
| SEI Investments Company | $2.39M | 0.38 | 108,301 | +51.58% | +$812,239.43 | <0.01 | |
| Paradiem | $2.28M | 0.36 | 103,410 | +118.55% | +$1.24M | 0.61 | |
| Two Sigma | $2.07M | 0.33 | 94,054 | +73.85% | +$880,542.01 | <0.01 | |
| RhumbLine Advisers | $1.61M | 0.26 | 73,275 | +0.51% | +$8,132.66 | <0.01 | |
| JPMorgan Chase | $1.47M | 0.23 | 66,841 | -54.84% | -$1.79M | <0.0001 | |
| Legal & General | $1.4M | 0.22 | 63,623 | +0.43% | +$6,061.00 | <0.0001 | |
| Nuveen | $1.4M | 0.22 | 63,688 | 0% | +$0 | <0.0001 | |
| Wedge Capital Management L L P Nc | $1.34M | 0.21 | 60,941 | +53.64% | +$468,923.17 | 0.02 | |
| Massachusetts Financial Services Co Ma | $1.34M | 0.21 | 60,937 | -0.22% | -$2,975.40 | <0.0001 | |
| Boston Partners | $428,880.00 | 0.2 | 58,032 | 0% | +$0 | <0.01 | |
| AQR Capital | $1.18M | 0.19 | 53,532 | +2.84% | +$32,575.11 | <0.01 | |
| Connor Clark & Lunn Investment Management Ltd | $1.16M | 0.18 | 52,810 | +23.8% | +$223,794.08 | <0.01 | |
| Bank of America | $1.12M | 0.18 | 50,902 | -23.23% | -$339,393.94 | <0.0001 | |
| Empowered Funds Llc | $1.11M | 0.18 | 50,449 | -46.25% | -$956,624.19 | 0.02 | |
| Mork Capital Management Llc | $1.1M | 0.17 | 50,000 | 0% | +$0 | 0.84 | |
| Goldman Sachs | $1.08M | 0.17 | 49,037 | -16.32% | -$210,724.35 | <0.0001 | |
| Dodge & Cox | $1.06M | 0.17 | 48,093 | +34.28% | +$270,629.23 | <0.01 | |
| Public Sector Pension Investment Board | $1.03M | 0.16 | 46,707 | 0% | +$0 | 0.01 | |
| Swiss National Bank | $1.02M | 0.16 | 46,400 | 0% | +$0 | <0.01 | |
| Ubs Asset Management Americas Inc | $886,999.00 | 0.14 | 40,245 | 0% | +$0 | <0.0001 | |
| Winton Capital Management | $815,414.00 | 0.13 | 36,997 | +98.16% | +$403,927.14 | 0.05 |