Ainos, Inc. (AIMD) shareholders
AIMDNasdaqComputer Peripheral Equipment, NECFiscal year ends December 31Also trades as AIMDW
$1.23+0.17 (+16.04%)
Close on Nov 13, 2026Market cap $9.08MP/E –Yield –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
0M
Shares held, 13F filers
Institutional holders
14
3 new, 0 sold out
Net institutional buying
0M
In Q2 2026
Insider trades, 12 months
9 buys · 9 sales
Net sold $468.78K
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 |
|---|---|---|---|---|
| ASE Test, Inc. ("ASE Test Taiwan") Joint filing with ASE Technology Holding Co., Ltd. (17.00%) | 3,148,788 | 17.00% | 13D (active) amendment | Mar 10, 2025 |
| Ainos, Inc. | 2,456,319 | 12.10% | 13D (active) amendment | Mar 10, 2025 |
| ScentAI Inc. | 1,160,000 | 16.50% | 13D (active) | Dec 30, 2025 |
| Taiwan Carbon Nano Technology Corporation | 989,925 | 13.62% | 13D (active) amendment | Jan 28, 2026 |
| Ting Chuan Lee | 935,707 | 10.98% | 13D (active) amendment | Apr 15, 2026 |
| Chun-Jung Tsai | 686,999 | 8.06% | 13D (active) amendment | Apr 15, 2026 |
| ASE Test, Inc. Joint filing with ASE Technology Holding Co., Ltd. (8.40%) | 667,085 | 8.40% | 13D (active) amendment | Apr 12, 2026 |
| Ainos Inc | 491,263 | 5.76% | 13D (active) amendment | Apr 15, 2026 |
| Ainos Inc. | 491,263 | 9.13% | 13D (active) amendment | Oct 6, 2025 |
| Chun-Hsien Tsai | 410,372 | 7.00% | 13D (active) amendment | Nov 25, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of AIMD | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Geode Capital Management, LLC | 44,086 | – | $85.53K | −8,988 | 0.00% |
| Hrt Financial LP | 32,008 | – | $62.00K | New | 0.00% |
| Keystone Financial Group | 25,550 | – | $49.57K | +11,000 | 0.00% |
| Vanguard Capital Management LLC | 16,024 | – | $31.09K | +6,743 | 0.00% |
| Mariner, LLC | 15,800 | – | $30.65K | −15,000 | 0.00% |
| Vanguard Fiduciary Trust Co | 14,169 | – | $27.49K | – | 0.00% |
| Jane Street Group, LLC | 11,504 | – | $22.32K | New | 0.00% |
| UBS Group AG | 4,592 | – | $8.91K | +4,590 | 0.00% |
| Tower Research Capital LLC (TRC) | 3,157 | – | $6.13K | −1,284 | 0.00% |
| BlackRock, Inc. | 3,065 | – | $5.95K | – | 0.00% |
| Seneschal Advisors, LLC | 1,800 | – | $3.49K | – | 0.00% |
| Steward Partners Investment Advisory, LLC | 1,208 | – | $2.34K | – | 0.00% |
| Citigroup Inc | 177 | – | $343 | −324 | 0.00% |
| Caitong International Asset Management Co., Ltd | 93 | – | $180 | New | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|
| Q2 2026 | 14 | 0M | 3 / 3 | 4 / 0 | 0M | 0M |
| Q1 2026 | 12 | 0M | 4 / 2 | 2 / 5 | 0M | 0M |
| Q4 2025 | 14 | 0M | 2 / 7 | 1 / 0 | 0M | 0M |
| Q3 2025 | 12 | 0M | 6 / 2 | 0 / 2 | 0M | 0M |
| Q2 2025 | 8 | 0M | 8 / 0 | 0 / 0 | 0M | 0M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
4 funds held AIMD in Q2 2026, 24% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.
| Fund | Shares | % of AIMD | Value | % of fund | As of |
|---|---|---|---|---|---|
| Fidelity Extended Market Index Fund | 48,596 | – | $115.66K | 0.00% | May 31, 2026 |
| Vanguard Extended Market Index Fund | 16,024 | – | $31.09K | 0.00% | Jun 30, 2026 |
| Fidelity Series Total Market Index Fund | 2,049 | – | $4.88K | 0.00% | May 31, 2026 |
| Fidelity Nasdaq Composite Index Fund | 396 | – | $942 | 0.00% | May 31, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | Latest filing |
|---|---|---|---|
| chun-hsien tsai | CEO, PRESIDENT, CHAIRMAN, Director | 710,372 | Apr 17, 2026 |
| Hsin-Liang Christopher Lee | CFO | 75,275 | Nov 26, 2025 |
| yao-chung chiang | Director | 102,559 | Jun 9, 2026 |
| Chun-Jung Tsai | Director | 658,199 | May 27, 2026 |
| ting-chuan lee | Director | 807,417 | May 27, 2026 |
| chung-yi tsai | Director | 90,880 | Nov 26, 2025 |
| wen-han chang | Director | 4,101,546 | Nov 26, 2025 |
| Pao-Sheng Wei | Director | 90,880 | Nov 26, 2025 |
| Carbon Nano Technology Corp Taiwan | 10% owner | 948,925 | May 27, 2026 |
| ASE Test, Inc. | 10% owner | 58,887 | Apr 15, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| yao-chung chiang Director | Jun 5, 2026 | Buy | +3,500 | $2.05 | $7.17K | 11,279 |
| yao-chung chiang Director | Jun 3, 2026 | Buy | +2,000 | $2.13 | $4.26K | 7,779 |
| yao-chung chiang Director | May 28, 2026 | Buy | +250 | $2.30 | $575 | 5,779 |
| yao-chung chiang Director | May 27, 2026 | Buy | +2,000 | $2.00 | $4.00K | 5,529 |
| ting-chuan lee Director | May 26, 2026 | Sale | −109,988 | $1.90 | $208.98K | 807,417 |
| Chun-Jung Tsai Director | May 26, 2026 | Sale | −27,718 | $1.87 | $51.83K | 658,199 |
| Carbon Nano Technology Corp Taiwan 10% owner | May 26, 2026 | Sale | −41,000 | $2.36 | $96.76K | 948,925 |
| Chun-Jung Tsai Director | May 22, 2026 | Sale | −1,082 | $1.55 | $1.68K | 685,917 |
| ting-chuan lee Director | May 22, 2026 | Sale | −9,302 | $1.57 | $14.60K | 917,405 |
| ting-chuan lee Director | May 21, 2026 | Sale | −9,000 | $1.56 | $14.04K | 926,707 |
| yao-chung chiang Director | May 19, 2026 | Buy | +2,200 | $1.68 | $3.70K | 3,529 |
| yao-chung chiang Director | May 18, 2026 | Buy | +500 | $1.65 | $825 | 1,329 |
| yao-chung chiang Director | May 5, 2026 | Buy | +129 | $1.70 | $219 | 829 |
| yao-chung chiang Director | Apr 30, 2026 | Buy | +200 | $1.68 | $336 | 700 |
| yao-chung chiang Director | Apr 29, 2026 | Buy | +100 | $1.75 | $175 | 500 |
| chun-hsien tsai CEO, PRESIDENT, CHAIRMAN, Director | Apr 15, 2026 | Award | +300,000 | $1.61 | $483.00K | 710,372 |
| Chun-Jung Tsai Director | Apr 15, 2026 | Award | +330,000 | $1.61 | $531.30K | 686,999 |
| ting-chuan lee Director | Apr 15, 2026 | Award | +570,000 | $1.61 | $917.70K | 935,707 |
| Carbon Nano Technology Corp Taiwan 10% owner | Jan 28, 2026 | Sale | −46,000 | $2.17 | $99.82K | 989,925 |
| Carbon Nano Technology Corp Taiwan 10% owner | Jan 9, 2026 | Sale | −431 | $1.86 | $802 | 1,035,925 |
| Carbon Nano Technology Corp Taiwan 10% owner | Jan 8, 2026 | Sale | −850 | $1.80 | $1.53K | 1,036,356 |
| Pao-Sheng Wei Director | Nov 25, 2025 | Award | +50,000 | $2.10 | $105.00K | 90,880 |
| chung-yi tsai Director | Nov 25, 2025 | Award | +50,000 | $2.10 | $105.00K | 90,880 |
| wen-han chang Director | Nov 25, 2025 | Award | +50,000 | $2.10 | $105.00K | 101,546 |
| ting-chuan lee Director | Nov 25, 2025 | Award | +80,000 | $2.10 | $168.00K | 365,707 |
| yao-chung chiang Director | Nov 25, 2025 | Award | +50,000 | $2.10 | $105.00K | 91,280 |
| chun-hsien tsai CEO, PRESIDENT, CHAIRMAN, Director | Nov 25, 2025 | Award | +80,000 | $2.10 | $168.00K | 410,372 |
| Hsin-Liang Christopher Lee CFO | Nov 25, 2025 | Award | +20,000 | $2.10 | $42.00K | 75,275 |
| Chun-Jung Tsai Director | Nov 25, 2025 | Award | +80,000 | $2.10 | $168.00K | 356,999 |
| Carbon Nano Technology Corp Taiwan 10% owner | Oct 6, 2025 | Sale | −7,000 | $3.59 | $25.13K | 1,037,206 |
| Carbon Nano Technology Corp Taiwan 10% owner | Oct 2, 2025 | Sale | −2,000 | $3.59 | $7.18K | 1,044,206 |
| Carbon Nano Technology Corp Taiwan 10% owner | Oct 1, 2025 | Sale | −1,700 | $3.46 | $5.88K | 1,046,206 |
| Carbon Nano Technology Corp Taiwan 10% owner | Sep 30, 2025 | Sale | −1,006 | $3.52 | $3.54K | 1,047,906 |
| Carbon Nano Technology Corp Taiwan 10% owner | Aug 6, 2025 | Sale | +20,000 | $2.95 | $59.00K | 1,048,912 |
| Carbon Nano Technology Corp Taiwan 10% owner | Aug 5, 2025 | Sale | +11,191 | $2.44 | $27.31K | 1,068,912 |
| Carbon Nano Technology Corp Taiwan 10% owner | Jul 18, 2025 | Sale | +7,000 | $2.81 | $19.67K | 1,080,103 |
| Carbon Nano Technology Corp Taiwan 10% owner | Jul 17, 2025 | Sale | +7,001 | $2.80 | $19.60K | 1,087,103 |
| Chun-Jung Tsai Director | Jun 27, 2025 | Sale | −10,000 | $0.50 | $5.00K | 1,384,997 |
| Chun-Jung Tsai Director | Jun 25, 2025 | Sale | −7,000 | $0.50 | $3.50K | 1,394,997 |
| ting-chuan lee Director | Jun 25, 2025 | Sale | −2,894 | $0.51 | $1.48K | 1,428,538 |
| Carbon Nano Technology Corp Taiwan 10% owner | Jun 23, 2025 | Sale | +29,476 | – | – | 5,470,524 |
| ASE Test, Inc. 10% owner | Jun 23, 2025 | Buy | +29,476 | – | – | 58,887 |
| Chun-Jung Tsai Director | Jun 23, 2025 | Sale | −10,000 | $0.50 | $5.00K | 1,401,997 |
| Chun-Jung Tsai Director | Jun 19, 2025 | Sale | −10,903 | $0.55 | $6.00K | 1,411,997 |
| Chun-Jung Tsai Director | Jun 18, 2025 | Sale | −5,000 | $0.52 | $2.60K | 1,422,900 |
| ting-chuan lee Director | Apr 8, 2025 | Award | +900,000 | $0.48 | $432.00K | 1,431,432 |
| chun-hsien tsai CEO, PRESIDENT, CHAIRMAN, Director | Apr 8, 2025 | Award | +900,000 | $0.48 | $432.00K | 1,651,862 |
| Chun-Jung Tsai Director | Apr 8, 2025 | Award | +900,000 | $0.48 | $432.00K | 1,427,900 |
| ting-chuan lee Director | Mar 10, 2025 | Award | +200,000 | $0.46 | $92.00K | 531,432 |
| Pao-Sheng Wei Director | Mar 10, 2025 | Award | +150,000 | $0.46 | $69.00K | 204,400 |
| Chun-Jung Tsai Director | Mar 10, 2025 | Award | +200,000 | $0.46 | $92.00K | 527,900 |
| chung-yi tsai Director | Mar 10, 2025 | Award | +150,000 | $0.46 | $69.00K | 204,400 |
| yao-chung chiang Director | Mar 10, 2025 | Award | +150,000 | $0.46 | $69.00K | 206,400 |
| wen-han chang Director | Mar 10, 2025 | Award | +150,000 | $0.46 | $69.00K | 257,733 |
| chun-hsien tsai CEO, PRESIDENT, CHAIRMAN, Director | Mar 10, 2025 | Award | +200,000 | $0.46 | $92.00K | 751,862 |
| Hsin-Liang Christopher Lee CFO | Mar 10, 2025 | Award | +250,000 | $0.46 | $115.00K | 276,376 |
| Pao-Sheng Wei Director | Jan 31, 2025 | Award | +1,468 | $0.68 | $998 | 54,400 |
| yao-chung chiang Director | Jan 31, 2025 | Award | +1,468 | $0.68 | $998 | 56,400 |
| wen-han chang Director | Jan 31, 2025 | Award | +1,468 | $0.68 | $998 | 107,733 |
| chung-yi tsai Director | Jan 31, 2025 | Award | +1,468 | $0.68 | $998 | 54,400 |
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 shares outstanding
–
0M shares short
Days to cover
1.4
At 0M shares a day
Change since last report
-20.3%
From 0M shares
Short volume, 20 days
51.2%
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 Ainos's stock actually held short. Settlement fails (shares not delivered on time) peaked at 10,509 shares on Sep 25, 2026 over the last 90 days.
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