MarketPeel
Insider Trading Intelligence
Pricing
…
SC

Stephen Chunping Chang

AOSL
SR VICE PRESIDENT OF MARKETING · ALPHA & OMEGA SEMICONDUCTOR LTD · CIK 0001722000
FILING MIX · LIFETIME42%/58%
BUYS
18
SELLS
25
TOTAL VALUE
$4.75M
COMPANIES
1
ACTIVE SINCE
Mar 2020
HOLDINGS NOW
634,070
AVG SELL PX
$26.65
TRADE KIND
SHOWING 43 / 43
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
4 backtested trades · 8 horizons · 12 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Stephen Chunping Chang, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d4+0.00%+30.59%+0.75%+29.84%+30.66%—
14d4+0.00%+27.93%+1.73%+26.20%+25.68%—
30d4+0.00%+24.53%+5.12%+19.41%+16.52%—
60d4+0.00%+41.96%+6.42%+35.53%+33.38%—
90d4+0.00%+7.97%+6.89%+1.07%-3.54%—
180d4(4 pending)——————
1y4(4 pending)——————
2y4(4 pending)——————
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
AOSL · 634,070 shares · as of May 21, 2026
0164,095328,190492,284656,379202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 18 buys / 25 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALEGRANT
Gift
2,000——634,070May 21, 2026May 26, 2026 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE10b5-1
10b5-1 plan
9,911$34.90$345.9K635,901Apr 17, 2026Apr 20, 2026 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE10b5-1
10b5-1 plan
3,481$33.90$118.0K645,812Apr 17, 2026Apr 20, 2026 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE10b5-1
10b5-1 plan
1,492$32.90$49.1K649,293Apr 17, 2026Apr 20, 2026 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE10b5-1
10b5-1 plan
5,594$31.90$178.4K650,785Apr 14, 2026Apr 16, 2026 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
67,500——632,362Mar 16, 2026Mar 18, 2026 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
Chief Executive Officer
17,839$21.43$382.3K588,879Mar 16, 2026Mar 18, 2026 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
67,500——656,379Mar 16, 2026Mar 18, 2026 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
Chief Executive Officer
25,644$21.43$549.6K606,718Mar 16, 2026Mar 18, 2026 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
Chief Executive Officer
12,002$20.66$248.0K564,862Jan 2, 2026Jan 5, 2026 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALEGRANT
Gift
2,100——576,705Sep 9, 2025Sep 10, 2025 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
57,500——578,678Mar 17, 2025Mar 18, 2025 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
Chief Executive Officer
11,013$27.61$304.1K521,178Mar 17, 2025Mar 18, 2025 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
67,500——552,187Mar 17, 2025Mar 18, 2025 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
Chief Executive Officer
19,996$27.61$552.1K532,191Mar 17, 2025Mar 18, 2025 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
Chief Executive Officer
11,224$36.54$410.1K484,687Jan 2, 2025Jan 3, 2025 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALEGRANT
Gift
2,000——495,784Nov 8, 2024Nov 8, 2024 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
Chief Executive Officer
6,080$21.55$131.0K496,909Mar 15, 2024Mar 18, 2024 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
Chief Executive Officer
13,940$21.55$300.4K502,989Mar 15, 2024Mar 18, 2024 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
57,500——516,929Mar 15, 2024Mar 18, 2024 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
90,000——467,637Jan 2, 2024Jan 5, 2024 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
Chief Executive Officer
8,208$27.38$224.7K459,429Jan 2, 2024Jan 5, 2024 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
57,500——369,588Mar 15, 2023Mar 17, 2023 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
Chief Executive Officer
6,762$25.45$172.1K362,826Mar 15, 2023Mar 17, 2023 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
Chief Executive Officer
5,201$25.45$132.4K357,625Mar 15, 2023Mar 17, 2023 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
19,350——376,975Mar 15, 2023Mar 17, 2023 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
3,750——293,068Mar 15, 2022Mar 17, 2022 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
25,000——297,434Mar 15, 2022Mar 17, 2022 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
President
4,368$48.65$212.5K293,066Mar 15, 2022Mar 17, 2022 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
17,500——310,568Mar 15, 2022Mar 17, 2022 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
President
3,748$48.65$182.3K289,318Mar 15, 2022Mar 17, 2022 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALEGRANT
Gift
1,000——272,759Mar 18, 2021Jul 16, 2021 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
3,750——261,097Mar 15, 2021Mar 17, 2021 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
President
2,843$36.27$103.1K255,660Mar 15, 2021Mar 17, 2021 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
17,500——261,662Mar 15, 2021Mar 17, 2021 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
1,687——257,347Mar 15, 2021Mar 17, 2021 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
President
3,159$36.27$114.6K258,503Mar 15, 2021Mar 17, 2021 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
12,000——273,097Feb 25, 2021Mar 17, 2021 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
12,000——237,355Mar 16, 2020Mar 18, 2020 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
Sr Vice President of Marketing
3,629$7.36$26.7K225,355Mar 16, 2020Mar 18, 2020 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
SALE
Sr Vice President of Marketing
2,223$7.36$16.4K228,984Mar 16, 2020Mar 18, 2020 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
1,687——239,042Mar 16, 2020Jul 8, 2020 ↗View →
AOSL
ALPHA & OMEGA SEMICONDUCTOR LTD
PURCHASEGRANT
Stock grant
3,750——242,792Mar 16, 2020Jul 8, 2020 ↗View →
Other insiders · AOSL
Loading peer insiders…
About this filer
CIK 0001722000
ROLE
Sr Vice President of Marketing
PRIMARY
AOSL
COMPANIES
1
ACTIVE SINCE
Mar 2020
MARKETPEEL · /INSIDER/0001722000DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback