DIODNasdaqSemiconductors & Related DevicesFiscal year ends December 31
DIODES INC /DEL/
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 5, 2026
$84.77+1.92 (+2.32%)
Close on Oct 19, 2026
- Market cap
- $3.94B
- P/E (TTM)
- 45.8
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
99.5%
46M of 46M shares
Institutional holders
397
96 new, 32 sold out
Net institutional buying
0M
In Q2 2026
Insider trades, 12 months
0 buys · 29 sales
Net sold $16.76M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| BlackRock, Inc. | 6,761,030 | 14.60% | 13G (passive) amendment | Jun 30, 2025 |
| FMR LLC | 5,687,734 | 12.40% | 13G (passive) amendment | Mar 31, 2026 |
| Abigail P. Johnson | 4,380,124 | 9.50% | 13G (passive) amendment | Jun 30, 2026 |
| Vanguard Portfolio Management | 3,656,577 | 7.97% | 13G (passive) | Mar 31, 2026 |
| State Street Corporation | 2,605,247 | 5.70% | 13G (passive) | Jun 30, 2026 |
| Vanguard Capital Management | 2,333,662 | 5.08% | 13G (passive) | Mar 31, 2026 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of DIOD | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| BlackRock, Inc. | 7,345,758 | 15.95% | $803.92M | +147,184 | 0.01% |
| FMR LLC | 4,380,124 | 9.51% | $479.36M | −1,307,610 | 0.02% |
| Vanguard Portfolio Management LLC | 3,742,338 | 8.13% | $409.56M | +103,406 | 0.02% |
| State Street Corp | 2,605,247 | 5.66% | $285.10M | +323,198 | 0.01% |
| Dimensional Fund Advisors LP | 2,200,506 | 4.78% | $240.80M | −235,853 | 0.04% |
| Vanguard Capital Management LLC | 1,994,456 | 4.33% | $218.27M | +12,290 | 0.00% |
| William Blair Investment Management, LLC | 1,682,686 | 3.65% | $184.15M | +1,241,124 | 0.55% |
| Geode Capital Management, LLC | 1,647,832 | 3.58% | $180.36M | +210,970 | 0.01% |
| Morgan Stanley | 1,045,681 | 2.27% | $114.44M | −618,845 | 0.01% |
| Price T Rowe Associates Inc /Md/ | 976,111 | 2.12% | $106.83K | +923,017 | 0.01% |
| Earnest Partners LLC | 964,595 | 2.09% | $105.57M | −36,840 | 0.38% |
| Invesco Ltd. | 889,222 | 1.93% | $97.32M | +60,803 | 0.01% |
| American Century Companies Inc | 806,886 | 1.75% | $88.31M | +687,921 | 0.04% |
| Charles Schwab Investment Management Inc | 728,885 | 1.58% | $79.77M | −43,453 | 0.01% |
| Global Alpha Capital Management Ltd. | 578,999 | 1.26% | $63.37M | −258,655 | 3.80% |
| Northern Trust Corp | 574,559 | 1.25% | $62.88M | +32,350 | 0.01% |
| Victory Capital Management Inc | 507,594 | 1.10% | $55.55M | −284,042 | 0.03% |
| Nomura Asset Management International Inc. | 480,789 | 1.04% | $52.62M | −101,447 | 0.08% |
| Bessemer Group Inc | 460,743 | 1.00% | $50.42K | +16,203 | 0.07% |
| Fuller & Thaler Asset Management, Inc. | 443,716 | 0.96% | $48.56M | +15,546 | 0.13% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 397 | 46M | 99.5% | 96 / 130 | 123 / 32 | 7M | 6M |
| Q1 2026 | 338 | 45M | 98.6% | 75 / 118 | 98 / 34 | 10M | 3M |
| Q4 2025 | 303 | 45M | 96.9% | 50 / 96 | 123 / 35 | 4M | 5M |
| Q3 2025 | 291 | 47M | 100.0% | 41 / 102 | 106 / 40 | 4M | 3M |
| Q2 2025 | 293 | 46M | 99.3% | 60 / 107 | 88 / 37 | 5M | 4M |
| Q1 2025 | 272 | 46M | 99.4% | 57 / 95 | 83 / 51 | 5M | 7M |
| Q4 2024 | 269 | 48M | 100.0% | 31 / 89 | 105 / 50 | 3M | 2M |
| Q3 2024 | 293 | 47M | 100.0% | 47 / 86 | 120 / 38 | 11M | 5M |
| Q2 2024 | 285 | 47M | 100.0% | 29 / 100 | 111 / 48 | 4M | 4M |
| Q1 2024 | 307 | 47M | 100.0% | 34 / 115 | 116 / 62 | 6M | 5M |
| Q4 2023 | 336 | 47M | 100.0% | 40 / 110 | 136 / 52 | 5M | 3M |
| Q3 2023 | 351 | 45M | 96.7% | 46 / 124 | 136 / 49 | 3M | 3M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of DIOD | Value | % of fund | As of |
|---|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 2,768,037 | 6.01% | $302.93M | 0.27% | Jun 30, 2026 |
| Vanguard Total Stock Market Index Fund | 1,385,864 | 3.01% | $151.67M | 0.01% | Jun 30, 2026 |
| iShares Russell 2000 ETF | 1,181,314 | 2.57% | $129.28M | 0.16% | Jun 30, 2026 |
| Vanguard Information Technology Index Fund | 1,166,701 | 2.53% | $122.88M | 0.07% | May 31, 2026 |
| Vanguard Small-Cap Index Fund | 1,001,262 | 2.17% | $109.58M | 0.06% | Jun 30, 2026 |
| Strategic Advisers Fidelity U.S. Total Stock Fund | 735,045 | 1.60% | $77.41M | 0.03% | May 31, 2026 |
| State Street(R) SPDR(R) S&P(R) Semiconductor ETF | 729,655 | 1.58% | $79.85M | 2.30% | Jun 30, 2026 |
| Invesco Semiconductors ETF | 702,699 | 1.53% | $57.85M | 2.43% | Jul 31, 2026 |
| Fidelity Low-Priced Stock Fund | 670,017 | 1.45% | $55.16M | 0.22% | Jul 31, 2026 |
| Vanguard Small-Cap Growth Index Fund | 576,470 | 1.25% | $63.09M | 0.13% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 526,661 | 1.14% | $57.64M | 0.06% | Jun 30, 2026 |
| Small Cap Growth Fund | 514,414 | 1.12% | $42.35M | 0.76% | Jul 31, 2026 |
| Fidelity Small Cap Index Fund | 503,265 | 1.09% | $41.43M | 0.12% | Jul 31, 2026 |
| U.S. Small Cap Value Portfolio | 439,680 | 0.95% | $36.19M | 0.19% | Jul 31, 2026 |
| State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF | 420,681 | 0.91% | $46.04M | 0.27% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Gary Yu | President and CEO, Director | 108,147 | 0.23% | May 27, 2026 |
| Francis Tang | Chief Technology Officer | 74,303 | 0.16% | Jun 1, 2026 |
| Richard Dallas White | Corporate Secretary | 44,375 | 0.10% | Jun 1, 2026 |
| Jin Zhao | President, Diodes Asia | 43,531 | 0.09% | May 27, 2026 |
| Emily Yang | SVP Worldwide Sales/Marketing | 64,038 | 0.14% | May 27, 2026 |
| Andy Tsong | SVP Worldwide Products Group | 48,170 | 0.10% | May 27, 2026 |
| Brett R. Whitmire | CFO | 44,632 | 0.10% | May 13, 2026 |
| Evan Yu | Director | 12,000 | 0.03% | Aug 13, 2026 |
| Elizabeth Bull | Director | 12,000 | 0.03% | May 13, 2026 |
| Button Angie Chen | Director | 20,040 | 0.04% | May 13, 2026 |
| Huey-Jen Jenny Su | Director | 6,000 | 0.01% | May 13, 2026 |
| Philip J. Ritter | Director | 3,000 | 0.01% | May 13, 2026 |
| Warren Chen | Director | 13,140 | 0.03% | May 13, 2026 |
| Robert E. Feiger | Director | 6,200 | 0.01% | May 15, 2025 |
| Keh Shew Lu | – | 506,288 | 1.10% | May 28, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Evan Yu Director | Aug 12, 2026 | Award | +2,250 | – | – | 14,250 |
| Francis Tang Chief Technology Officer | May 29, 2026 | Sale | −15,330 | $112.04 | $1.72M | 71,438 |
| Richard Dallas White Corporate Secretary | May 29, 2026 | Sale | −1,000 | $104.48 | $104.48K | 10,071 |
| Richard Dallas White Corporate Secretary | May 29, 2026 | Sale | −2,000 | $107.01 | $214.02K | 8,071 |
| Emily Yang SVP Worldwide Sales/Marketing | May 27, 2026 | Sale | −3,000 | $110.08 | $330.24K | 61,878 |
| Gary Yu President and CEO, Director | May 27, 2026 | Sale | −3,632 | $110.08 | $399.81K | 108,147 |
| Francis Tang Chief Technology Officer | May 27, 2026 | Sale | −5,000 | $110.08 | $550.40K | 86,768 |
| Keh Shew Lu – | May 26, 2026 | Tax withholding | −1,970 | $108.24 | $213.23K | 90,305 |
| Emily Yang SVP Worldwide Sales/Marketing | May 26, 2026 | Sale | −2,000 | $107.52 | $215.04K | 64,878 |
| Andy Tsong SVP Worldwide Products Group | May 26, 2026 | Sale | −1,582 | $106.96 | $169.21K | 48,170 |
| Gary Yu President and CEO, Director | May 26, 2026 | Tax withholding | −592 | $108.24 | $64.08K | 111,779 |
| Francis Tang Chief Technology Officer | May 26, 2026 | Sale | −4,137 | $108.00 | $446.80K | 91,768 |
| Jin Zhao President, Diodes Asia | May 26, 2026 | Sale | −3,689 | $106.86 | $394.21K | 43,531 |
| Emily Yang SVP Worldwide Sales/Marketing | May 20, 2026 | Sale | −2,000 | $96.81 | $193.62K | 66,878 |
| Gary Yu President and CEO, Director | May 19, 2026 | Gift | −300 | – | – | 112,371 |
| Emily Yang SVP Worldwide Sales/Marketing | May 15, 2026 | Sale | −2,000 | $101.47 | $202.94K | 68,878 |
| Brett R. Whitmire CFO | May 13, 2026 | Sale | −16,556 | $103.34 | $1.71M | 44,632 |
| Andy Tsong SVP Worldwide Products Group | May 12, 2026 | Sale | −2,652 | $110.00 | $291.72K | 49,752 |
| Francis Tang Chief Technology Officer | May 12, 2026 | Sale | −3,643 | $108.00 | $393.44K | 95,905 |
| Jin Zhao President, Diodes Asia | May 12, 2026 | Sale | −2,760 | $102.36 | $282.51K | 47,220 |
| Elizabeth Bull Director | May 11, 2026 | Award | +3,000 | – | – | 12,000 |
| Button Angie Chen Director | May 11, 2026 | Award | +6,000 | – | – | 20,040 |
| Philip J. Ritter Director | May 11, 2026 | Award | +3,000 | – | – | 3,000 |
| Huey-Jen Jenny Su Director | May 11, 2026 | Award | +3,000 | – | – | 6,000 |
| Warren Chen Director | May 11, 2026 | Award | +3,000 | – | – | 13,140 |
| Gary Yu President and CEO, Director | May 11, 2026 | Award | +3,000 | – | – | 112,671 |
| Gary Yu President and CEO, Director | Feb 24, 2026 | Sale | −2,000 | $70.00 | $140.00K | 109,671 |
| Emily Yang SVP Worldwide Sales/Marketing | Feb 24, 2026 | Sale | −2,154 | $69.89 | $150.54K | 70,878 |
| Keh Shew Lu Director | Feb 20, 2026 | Sale | −64,266 | $67.74 | $4.35M | 180,131 |
| Keh Shew Lu Director | Feb 20, 2026 | Sale | −46,734 | $67.78 | $3.17M | 225,152 |
| Andy Tsong SVP Worldwide Products Group | Feb 13, 2026 | Sale | −3,277 | $70.46 | $230.90K | 52,404 |
| Emily Yang SVP Worldwide Sales/Marketing | Feb 13, 2026 | Sale | −1,000 | $71.89 | $71.89K | 73,032 |
| Brett R. Whitmire CFO | Feb 13, 2026 | Sale | −5,953 | $71.22 | $423.97K | 61,188 |
| Brett R. Whitmire CFO | Feb 3, 2026 | Sale | −830 | $60.85 | $50.51K | 67,141 |
| Emily Yang SVP Worldwide Sales/Marketing | Feb 3, 2026 | Sale | −950 | $60.85 | $57.81K | 74,032 |
| Gary Yu President and CEO, Director | Feb 3, 2026 | Sale | −2,900 | $60.85 | $176.47K | 111,671 |
| Andy Tsong SVP Worldwide Analog Products | Feb 2, 2026 | Tax withholding | −1,541 | $60.66 | $93.48K | 55,681 |
| Brett R. Whitmire CFO | Feb 2, 2026 | Tax withholding | −2,806 | $60.66 | $170.21K | 67,971 |
| Francis Tang Chief Technology Officer | Feb 2, 2026 | Tax withholding | −2,068 | $60.66 | $125.44K | 99,548 |
| Jin Zhao President, Diodes Asia | Feb 2, 2026 | Tax withholding | −1,846 | $60.66 | $111.98K | 50,505 |
| Jin Zhao President, Diodes Asia | Feb 2, 2026 | Sale | −525 | $59.19 | $31.07K | 49,980 |
| Keh Shew Lu Director | Feb 2, 2026 | Tax withholding | −12,350 | $60.66 | $749.15K | 92,275 |
| Emily Yang SVP Worldwide Sales/Marketing | Feb 2, 2026 | Tax withholding | −2,497 | $60.66 | $151.47K | 74,982 |
| Gary Yu President and CEO, Director | Feb 2, 2026 | Tax withholding | −1,340 | $60.66 | $81.28K | 114,571 |
| Andy Tsong SVP Worldwide Analog Products | Feb 1, 2026 | Award | +18,000 | – | – | 41,100 |
| Andy Tsong SVP Worldwide Analog Products | Feb 1, 2026 | Award | +18,000 | – | – | 57,222 |
| Brett R. Whitmire CFO | Feb 1, 2026 | Award | +22,000 | – | – | 45,100 |
| Brett R. Whitmire CFO | Feb 1, 2026 | Award | +22,000 | – | – | 70,777 |
| Francis Tang Chief Technology Officer | Feb 1, 2026 | Award | +13,000 | – | – | 101,616 |
| Francis Tang Chief Technology Officer | Feb 1, 2026 | Award | +13,000 | – | – | 37,200 |
| Jin Zhao President, Diodes Asia | Feb 1, 2026 | Award | +18,000 | – | – | 53,926 |
| Jin Zhao President, Diodes Asia | Feb 1, 2026 | Award | +18,000 | – | – | 41,100 |
| Emily Yang SVP Worldwide Sales/Marketing | Feb 1, 2026 | Award | +18,000 | – | – | 77,479 |
| Emily Yang SVP Worldwide Sales/Marketing | Feb 1, 2026 | Award | +18,000 | – | – | 41,100 |
| Gary Yu President and CEO, Director | Feb 1, 2026 | Award | +32,000 | – | – | 115,911 |
| Gary Yu President and CEO, Director | Feb 1, 2026 | Award | +32,000 | – | – | 89,000 |
| Keh Shew Lu Director | Nov 12, 2025 | Sale | −2,095 | $47.46 | $99.43K | 244,397 |
| Keh Shew Lu Director | Nov 12, 2025 | Sale | −3,905 | $47.40 | $185.10K | 271,886 |
| Emily Yang SVP Worldwide Sales/Marketing | Aug 28, 2025 | Sale | −1,000 | $56.36 | $56.36K | 59,479 |
| Brett R. Whitmire CFO | Aug 27, 2025 | Sale | −2,000 | $55.90 | $111.80K | 48,777 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Tang Francis Officer | May 29, 2026 | 15,330 | $1.72M | May 29, 2026 | Performance Shares |
| Richard Dallas White Officer | May 29, 2026 | 3,000 | $329.67K | May 29, 2026 | Open market purchase |
| Yu Gary Officer, Director | May 27, 2026 | 3,632 | $399.81K | May 27, 2026 | Restricted Stock |
| S. Yang Emily Officer | May 27, 2026 | 3,000 | $330.24K | May 27, 2026 | Performance Shares |
| Tang Francis Officer | May 27, 2026 | 5,000 | $550.40K | May 27, 2026 | Performance Shares |
| S. Yang Emily Officer | May 26, 2026 | 2,000 | $215.04K | May 26, 2026 | Performance Shares |
| Tsong Kuo-Ting Officer | May 26, 2026 | 1,582 | $169.20K | May 26, 2026 | Restricted Stock |
| Tang Francis Officer | May 26, 2026 | 4,137 | $446.80K | May 26, 2026 | Performance Shares |
| Zhao Jin Officer | May 26, 2026 | 3,689 | $394.21K | May 26, 2026 | Restricted Stock |
| S. Yang Emily Officer | May 20, 2026 | 2,000 | $193.62K | May 20, 2026 | Performance Shares |
| S. Yang Emily Officer | May 15, 2026 | 2,000 | $202.93K | May 15, 2026 | Performance Shares |
| R. Whitmire Brett Officer | May 13, 2026 | 16,556 | $1.71M | May 13, 2026 | Performance Shares |
| Tsong Kuo-Ting Officer | May 12, 2026 | 2,652 | $291.72K | May 12, 2026 | Restricted Stock |
| Zhao Jin Officer | May 12, 2026 | 2,760 | $282.52K | May 12, 2026 | Restricted Stock |
| Tang Francis Officer | May 12, 2026 | 3,643 | $393.44K | May 12, 2026 | Performance Shares |