Among active 13F managers last quarter, 3 opened and 28 added, while 21 reduced; the largest holder to move was William Blair Investment Management, LLC (+281%). Over the last 180 days, 7 insiders sold and none bought, a net -$7.6M in open-market trades.
The legs disagree, or only one of them leans.
337 tracked 13F filers disclose a position in DIOD as of the latest SEC 13F filings, a combined $3.5B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 7.2M | $491.4M | ▲+0.1% Added · +5K sh | Q1 2026 | |
| 2 | FMR LLC | 5.7M | $388.2M | ▼−9.8% Reduced · −619K sh | Q1 2026 | |
| 3 | Vanguard Portfolio Management LLC | 3.6M | $248.4M | →New filer Inherited book · not a new buyer | Q1 2026 | |
| 4 | State Street Corp | 2.6M | $285.1M | ▲+14% Added · +323K sh | Q2 2026 | |
| 5 | Dimensional Fund Advisors LP | 2.4M | $166.3M | ▲+2.3% Added · +54K sh | Q1 2026 | |
| 6 | Vanguard Capital Management LLC | 2.0M | $135.3M | →New filer Inherited book · not a new buyer | Q1 2026 | |
| 7 | William Blair Investment Management, LLC | 1.7M | $184.2M | ▲+281% Added · +1.2M sh | Q2 2026 | |
| 8 | Morgan Stanley | 1.7M | $113.6M | ▼−7.1% Reduced · −127K sh | Q1 2026 | |
| 9 | Geode Capital Management, LLC | 1.6M | $180.4M | ▲+15% Added · +211K sh | Q2 2026 | |
| 10 | Earnest Partners LLC | 965K | $105.6M | ▼−3.7% Reduced · −37K sh | Q2 2026 | |
| 11 | Goldman Sachs Group Inc | 931K | $63.6M | ▲+42% Added · +275K sh | Q1 2026 | |
| 12 | Victory Capital Management Inc | 792K | $54.0M | ▲+55% Added · +282K sh | Q1 2026 | |
| 13 | Charles Schwab Investment Management Inc | 772K | $52.7M | ▼−3.1% Reduced · −25K sh | Q1 2026 | |
| 14 | Global Alpha Capital Management Ltd. | 579K | $63.4M | ▼−31% Reduced · −259K sh | Q2 2026 | |
| 15 | Northern Trust Corp | 542K | $37.0M | ▲+3.8% Added · +20K sh | Q1 2026 | |
| 16 | Fuller & Thaler Asset Management, Inc. | 444K | $48.6M | ▲+3.6% Added · +16K sh | Q2 2026 | |
| 17 | Arrowstreet Capital, Limited Partnership | 443K | $30.2M | ▼−28% Reduced · −171K sh | Q1 2026 | |
| 18 | Bank Of America Corp | 391K | $26.7M | ▲+11% Added · +40K sh | Q1 2026 | |
| 19 | Royal Bank Of Canada | 360K | $24.6M | ▼−4.7% Reduced · −18K sh | Q1 2026 | |
| 20 | Panagora Asset Management Inc | 358K | $39.2M | ▲+111% Added · +189K sh | Q2 2026 | |
| 21 | Emerald Advisers, LLC | 345K | $37.8M | ▲+91% Added · +164K sh | Q2 2026 | |
| 22 | Boston Partners | 343K | $23.4M | ▲+854% Added · +307K sh | Q1 2026 | |
| 23 | Ameriprise Financial Inc | 333K | $22.8M | ▼−6.3% Reduced · −22K sh | Q1 2026 | |
| 24 | Tributary Capital Management, LLC | 328K | $35.9M | ▼−3.8% Reduced · −13K sh | Q2 2026 | |
| 25 | Vanguard Fiduciary Trust Co | 294K | $20.1M | →New filer Inherited book · not a new buyer | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership. 1 value row is withheld because the reported units disagree with same-security peers; share counts are unchanged.
Last quarter, 3 funds opened a new position in DIOD and 28 added to an existing one, while 21 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Their position there |
|---|---|---|
| Microsoft CorpMSFT | 185 funds | $229.9B |
| Amazon.com IncAMZN | 184 funds | $173.3B |
| Nvidia CorpNVDA | 181 funds | $337.5B |
| Alphabet Inc-CL AGOOGL | 181 funds | $138.5B |
| Broadcom IncAVGO | 180 funds | $137.5B |
| Meta Platforms Inc-Class AMETA | 179 funds | $96.3B |
| Apple IncAAPL | 178 funds | $255.6B |
| JPMorgan Chase & CoJPM | 177 funds | $50.5B |
| Eli Lilly & CoLLY | 176 funds | $66.6B |
| Micron Technology IncMU | 176 funds | $37.3B |
| Alphabet Inc-CL CGOOG | 174 funds | $109.0B |
| Visa Inc-Class A SharesV | 174 funds | $50.3B |
Ranked by how many of DIOD's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in DIOD.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| May 29, 2026 | Tang Francis | Chief Technology Officer | Sell (S) | 15K | $1.7M |
| May 29, 2026 | White Richard Dallas | Corporate Secretary | Sell (S) 2 lots, same day | 3K | $319K |
| May 27, 2026 | Tang Francis | Chief Technology Officer | Sell (S) | 5K | $550K |
| May 27, 2026 | Yang Emily | SVP Worldwide Sales/Marketing | Sell (S) | 3K | $330K |
| May 27, 2026 | Yu Gary | President and CEO, Director | Sell (S) | 4K | $400K |
| May 26, 2026 | Tang Francis | Chief Technology Officer | Sell (S) | 4K | $447K |
| May 26, 2026 | Yang Emily | SVP Worldwide Sales/Marketing | Sell (S) | 2K | $215K |
| May 26, 2026 | Zhao Jin | President, Diodes Asia | Sell (S) | 4K | $394K |
| May 26, 2026 | Tsong Andy | SVP Worldwide Products Group | Sell (S) | 2K | $169K |
| May 20, 2026 | Yang Emily | SVP Worldwide Sales/Marketing | Sell (S) | 2K | $194K |
| May 15, 2026 | Yang Emily | SVP Worldwide Sales/Marketing | Sell (S) | 2K | $203K |
| May 13, 2026 | Whitmire Brett R | CFO | Sell (S) | 17K | $1.7M |
One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 53 | 39 | – |
Insiders Form 4 open-market | 0 | 7 | -$7.6M |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
Connected entities for DIOD
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/DIOD/capital-change-brief"
Use Arkolith's capital_change_brief for DIOD. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + the live filing stream, joined for DIOD. Filings are public domain, sourced to SEC EDGAR.