Ainos, Inc. (AIMD) Ownership
AIMD ownership summary
as of October 18, 2026- Institutions
- 2.3% of shares outstanding
- Insiders
- 70.93% of shares outstanding
- Shares outstanding
- 7.4M
- Float
- 2.4M shares available to trade
- Short interest
- 1.13% 41K shares short
- Days to cover
- 0.13 short interest down 26.0% vs prior month
- Institutions 2.35%
- Insiders 70.93%
- Other investors 26.72%
AIMD top institutional holders
19 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Geode Capital Management, LLC | 0.60% | 44K | $40,735 | −8,988 (−16.9%) | June 30, 2026 |
| 2 | HRT FINANCIAL LLC | 0.43% | 32K | $29,575 | +32,008 (0.0%) | June 30, 2026 |
| 3 | Keystone Financial Group Inc | 0.35% | 26K | $23,608 | +11,000 (+75.6%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 0.22% | 16K | $14,806 | +6,743 (+72.7%) | June 30, 2026 |
| 5 | Mariner Wealth Advisors LLC | 0.21% | 16K | $14,599 | −15,000 (−48.7%) | June 30, 2026 |
| 6 | Vanguard Fiduciary Trust Co | 0.19% | 14K | $13,092 | — | June 30, 2026 |
| 7 | Jane Street Group LLC | 0.16% | 12K | $10,630 | +11,504 (0.0%) | June 30, 2026 |
| 8 | UBS Group AG | 0.06% | 4,592 | $4,243 | +4,590 (+229,500.0%) | June 30, 2026 |
| 9 | Tower Research Capital LLC | 0.04% | 3,157 | $2,917 | −1,284 (−28.9%) | June 30, 2026 |
| 10 | BlackRock Inc | 0.04% | 3,065 | $2,832 | — | June 30, 2026 |
| 11 | Steward Partners Investment Advisory, LLC | 0.02% | 1,208 | $1,116 | — | June 30, 2026 |
| 12 | Citigroup Inc | <0.01% | 177 | $164 | −324 (−64.7%) | June 30, 2026 |
| 13 | Caitong International Asset Management Co., Limited. | <0.01% | 93 | $86 | +93 (0.0%) | June 30, 2026 |
| 14 | CWM, LLC duplicate | 0.00% | 1 | $1 | +1 (0.0%) | March 31, 2026 |
| 15 | DRW Securities, LLC | 0.00% | — | — | −66,211 (−100.0%) | March 31, 2026 |
| 16 | Citadel Advisors Llc | 0.00% | — | — | −10,196 (−100.0%) | March 31, 2026 |
| 17 | Renaissance Technologies Corp | 0.00% | — | — | −66,300 (−100.0%) | March 31, 2026 |
| 18 | Two Sigma Investments LLC | 0.00% | — | — | −48,309 (−100.0%) | March 31, 2026 |
| 19 | Bank of America Corp | 0.00% | — | — | −19 (−100.0%) | March 31, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 19, 7 holders added 66K shares and 9 cut 217K.
AIMD top mutual fund and ETF holders
2 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Fidelity Extended Market Index | 0.31% | 23K | $21,380 | −124 (−0.5%) | August 31, 2026 |
| 2 | Fidelity Series Total Market Index | 0.27% | 20K | $18,313 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
AIMD insider transactions
latest 11| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-01-28 | Carbon Nano Technology Taiwan | Sell | $2.17 | 46,000 | $99,820 |
| 2026-01-09 | Carbon Nano Technology Taiwan | Sell | $1.86 | 431 | $802 |
| 2026-01-08 | Carbon Nano Technology Taiwan | Sell | $1.80 | 850 | $1,530 |
| 2025-10-06 | Carbon Nano Technology Taiwan | Sell | $3.59 | 7,000 | $25,130 |
| 2025-10-02 | Carbon Nano Technology Taiwan | Sell | $3.58 | 2,000 | $7,160 |
| 2025-06-27 | Chun-Jung Tsai | Sell | $2.50 | 2,000 | $5,000 |
| 2025-06-25 | Chun-Jung Tsai | Sell | $2.50 | 1,400 | $3,500 |
| 2025-06-25 | Ting-Chuan Lee | Sell | $2.55 | 578 | $1,474 |
| 2025-06-23 | Chun-Jung Tsai | Sell | $2.50 | 2,000 | $5,000 |
| 2025-06-19 | Chun-Jung Tsai | Sell | $2.75 | 2,180 | $5,995 |
| 2025-06-18 | Chun-Jung Tsai | Sell | $2.60 | 1,000 | $2,600 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
AIMD shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns AIMD
Institutional investors own 2.3% of Ainos's shares and insiders 70.93%. The largest holder is Geode Capital Management, LLC with 0.60% of the shares (44K), as of June 30, 2026. Among the top 19 institutions, 7 added shares and 9 reduced their stake in the latest filings. Short interest is 1.13% of the float, or 0.13 days of average trading volume. The share count rose 2,245.1% since 2014.
Related: AIMD key metrics. See the AIMD stock overview for the latest quote and news.
AIMD ownership FAQ
Who owns the most Ainos stock?
The largest shareholders of Ainos are Geode Capital Management, LLC (0.60%), HRT FINANCIAL LLC (0.43%), Keystone Financial Group Inc (0.35%), Vanguard Capital Management, LLC (0.22%), Mariner Wealth Advisors LLC (0.21%).
What percentage of Ainos is owned by institutions?
Institutions hold 2.3% of Ainos's shares outstanding; insiders hold 70.93%.
Which funds own Ainos?
The largest fund holders of Ainos are Fidelity Extended Market Index (0.31%), Fidelity Series Total Market Index (0.27%).
What is Ainos's short interest?
41K shares of Ainos were sold short, 1.13% of the float; at the average daily volume it would take 0.13 days to cover.
Are insiders buying or selling Ainos?
Of the latest 11 reported insider transactions in Ainos (since June 18, 2025), 0 were purchases and 11 were sales.
How many shares of Ainos are outstanding?
Ainos has 7.4M shares outstanding, of which 2.4M are in the public float.