Diodes Inc (DIOD) shareholders
DIODNasdaqSemiconductors & Related DevicesFiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Nov 5, 2026Score 12/3019% above fair value
$87.25−4.35 (-4.75%)
Close on Nov 13, 2026Market cap $4.02BP/E 35.0Yield –
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 · 27 sales
Net sold $16.47M
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 Joint filing with Abigail P. Johnson (8.00%) | 3,699,991 | 8.00% | 13G (passive) amendment | Sep 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% | $106.83M | +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% | $50.42M | +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)
393 funds held DIOD in Q2 2026, 51% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.
| 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.
Short interest
Shares sold short and not yet bought back, as of Oct 30, 2026 (FINRA, reported twice a month)
Short % of float
4.62%
2M shares short
Days to cover
4.2
At 0M shares a day
Change since last report
-17.8%
From 3M shares
Short volume, 20 days
54.1%
Of volume reported to FINRA
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Diodes's stock actually held short. Settlement fails (shares not delivered on time) peaked at 3,697 shares on Aug 27, 2026 over the last 90 days.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Francis Tang 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 |
| Gary Yu Officer, Director | May 27, 2026 | 3,632 | $399.81K | May 27, 2026 | Restricted Stock |
| Emily Yang Officer | May 27, 2026 | 3,000 | $330.24K | May 27, 2026 | Performance Shares |
| Francis Tang Officer | May 27, 2026 | 5,000 | $550.40K | May 27, 2026 | Performance Shares |
| Emily Yang Officer | May 26, 2026 | 2,000 | $215.04K | May 26, 2026 | Performance Shares |
| Kuo-Ting Tsong Officer | May 26, 2026 | 1,582 | $169.20K | May 26, 2026 | Restricted Stock |
| Francis Tang Officer | May 26, 2026 | 4,137 | $446.80K | May 26, 2026 | Performance Shares |
| Jin Zhao Officer | May 26, 2026 | 3,689 | $394.21K | May 26, 2026 | Restricted Stock |
| Emily Yang Officer | May 20, 2026 | 2,000 | $193.62K | May 20, 2026 | Performance Shares |
| Emily Yang Officer | May 15, 2026 | 2,000 | $202.93K | May 15, 2026 | Performance Shares |
| Brett R. Whitmire Officer | May 13, 2026 | 16,556 | $1.71M | May 13, 2026 | Performance Shares |
| Kuo-Ting Tsong Officer | May 12, 2026 | 2,652 | $291.72K | May 12, 2026 | Restricted Stock |
| Jin Zhao Officer | May 12, 2026 | 2,760 | $282.52K | May 12, 2026 | Restricted Stock |
| Francis Tang Officer | May 12, 2026 | 3,643 | $393.44K | May 12, 2026 | Performance Shares |
See a number that looks wrong?