Diodes Incorporated
Diodes Incorporated (DIOD) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · DIOD · as of Sep 30, 2025
Ownership Breakdown
297
Institutional Holders
▼ 2 vs Q2
$2.45B
Total Inst. Value
▲ $62.14M vs Q2
45.94M
Shares Outstanding
freeFloat 98.02%
46.11M
13F Shares Held
▲ 912,278 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
DIOD largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. semiconductors & related devices | 7.12M | 15.35% | 15.35% | $378.91B | Nov 12, 2025 | ▼ 108.4K |
VANGUARD GROUP INC semiconductors & related devices | 5.99M | 12.91% | 12.91% | $318.64B | Nov 7, 2025 | ▲ 49.4K |
FMR LLC semiconductors & related devices | 5.99M | 12.90% | 12.90% | $318.60B | Nov 13, 2025 | ▲ 303.1K |
STATE STREET CORP semiconductors & related devices | 2.46M | 5.30% | 5.30% | $130.87B | Nov 14, 2025 | ▲ 172.0K |
DIMENSIONAL FUND ADVISORS LP semiconductors & related devices | 2.43M | 5.24% | 5.24% | $129.35B | Nov 12, 2025 | ▲ 4.5K |
MORGAN STANLEY semiconductors & related devices | 2.02M | 4.35% | 4.35% | $107.34B | May 27, 2026 | ▲ 147.3K |
GEODE CAPITAL MANAGEMENT, LLC semiconductors & related devices | 1.34M | 2.89% | 2.89% | $71.24B | Nov 12, 2025 | ▲ 9.9K |
BARROW HANLEY MEWHINNEY & STRAUSS LLC semiconductors & related devices | 1.28M | 2.76% | 2.76% | $68.16B | Nov 13, 2025 | ▼ 75.7K |
EARNEST PARTNERS LLC semiconductors & related devices | 1.09M | 2.34% | 2.34% | $57.74B | Nov 14, 2025 | ▼ 59.8K |
GLOBAL ALPHA CAPITAL MANAGEMENT LTD. semiconductors & related devices | 841.7K | 1.81% | 1.81% | $44.79B | Nov 13, 2025 | ▼ 4.4K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
21
Increased
+2.11M shares3
New Positions
first time holders25
Decreased
−994.0K shares0
Sold Out
fully exitedNet shares change (top 50)
+1.12M
+2.11M / −994.0K
Net new holders
-1
3 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
DIOD insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
6
Buy transactions
16
Sell transactions
0.38
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Tang Francis Chief Technology Officer | May 29, 2026 | Sale | 15,330 | $112.04 | $1.72M | 71.4K | Form 4 ↗ |
White Richard Dallas Corporate Secretary | May 29, 2026 | Sale | 1,000 | $104.48 | $104.5K | 10.1K | Form 4 ↗ |
White Richard Dallas Corporate Secretary | May 29, 2026 | Sale | 2,000 | $107.01 | $214.0K | 8.1K | Form 4 ↗ |
LU KEH SHEW Special Advisor | May 26, 2026 | Tax Withhold | 1,970 | $108.24 | $213.2K | 90.3K | Form 4 ↗ |
Zhao Jin President, Diodes Asia | May 26, 2026 | Sale | 3,689 | $106.86 | $394.2K | 43.5K | Form 4 ↗ |
Tsong Andy SVP Worldwide Products Group | May 26, 2026 | Sale | 1,582 | $106.95 | $169.2K | 48.2K | Form 4 ↗ |
Yang Emily SVP Worldwide Sales/Marketing | May 26, 2026 | Sale | 2,000 | $107.52 | $215.0K | 64.9K | Form 4 ↗ |
Yang Emily SVP Worldwide Sales/Marketing | May 27, 2026 | Sale | 3,000 | $110.08 | $330.2K | 61.9K | Form 4 ↗ |
Tang Francis Chief Technology Officer | May 26, 2026 | Sale | 4,137 | $108.00 | $446.8K | 91.8K | Form 4 ↗ |
Tang Francis Chief Technology Officer | May 27, 2026 | Sale | 5,000 | $110.08 | $550.4K | 86.8K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Diodes Incorporated (DIOD) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 1.98%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Diodes Incorporated is BLACKROCK, INC., holding approximately 7.12 million shares — equal to 15.35% of outstanding shares — as of September 30, 2025.
A total of 297 institutional investors currently hold DIOD stock, with a combined institutional value of approximately $2.45 billion as of the most recent 13F filing period.
Frequently asked questions
DIOD ownershipDiodes Incorporated (DIOD) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is BLACKROCK, INC. with a 15.35% stake. Company insiders hold 1.98%. Data sourced from SEC Form 13F as of September 30, 2025.