QT IMAGING HLDGS INC QTI
COM · Common Stock · CUSIP 746962307
- SectorHealth care
- IndustryElectromedical & Electrotherapeutic Apparatus
- HeadquartersNovato, CA
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 14.6m as of 2026-08-12, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $4.07.
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q1 2026 | 21 |
| Q2 2026 | 29 |
Biggest buyers
| VANGUARD CAPITAL MANAGEMENT LLC | Added | +334.5k |
| Bleichroeder LP | Added | +150.0k |
| CITADEL ADVISORS LLC | New | +114.1k |
| PERKINS CAPITAL MANAGEMENT INC | New | +100.0k |
| Stonepine Capital Management, LLC | New | +100.0k |
| Polar Asset Management Partners Inc. | New | +51.7k |
| VANGUARD FIDUCIARY TRUST CO | Added | +49.1k |
| BlackRock, Inc. | Added | +33.0k |
| Sio Capital Management, LLC | New | +15.2k |
| SIGNATUREFD, LLC | New | +2.9k |
Biggest sellers
| Lynrock Lake LP | Reduced | -42.4k |
| Veradace Capital Management LLC | Sold out | -18.9k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -14.8k |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | -6.4k |
| Tower Research Capital LLC (TRC) | Reduced | -120 |
| ROYAL BANK OF CANADA | Sold out | -44 |
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| KAKKIS EMIL D 13G · institution new · filed 2025-03-26 | 5.1% |
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 6 | $2.2m | 0 | — | — |
| Q1 2025 | 2 | $68.2k | 0 | — | — |
| Q2 2025 | 2 | $502.4k | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 1 | $155.0k | 0 | — | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| Lynrock Lake LP 0.29% of their portfolio | 1.1m $4.5m | Reduced -42.4k |
| Alyeska Investment Group, L.P. 0.01% of their portfolio | 702.8k $2.9m | Unchanged |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 356.4k $1.5m | Added +334.5k |
| Bleichroeder LP 0.23% of their portfolio | 316.7k $1.3m | Added +150.0k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 135.4k $551.4k | Reduced -6.4k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 114.1k $464.4k | New |
| PERKINS CAPITAL MANAGEMENT INC 0.31% of their portfolio | 100.0k $407.0k | New |
| Stonepine Capital Management, LLC 0.31% of their portfolio | 100.0k $407.0k | New |
| BlackRock, Inc. 0.00% of their portfolio | 61.4k $249.7k | Added +33.0k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 55.3k $225.2k | Reduced -14.8k |
| Polar Asset Management Partners Inc. 0.00% of their portfolio | 51.7k $210.3k | New |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 50.8k $206.6k | Added +49.1k |
| Blue Trust, Inc. 0.00% of their portfolio | 24.0k $97.7k | Unchanged |
| NORTHERN TRUST CORP 0.00% of their portfolio | 20.8k $84.5k | Added +1.4k |
| OXFORD FINANCIAL GROUP, LTD. LLC 0.00% of their portfolio | 20.6k $83.7k | Unchanged |
| Sio Capital Management, LLC 0.01% of their portfolio | 15.2k $62.0k | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 6.9k $28.0k | Added +1.3k |
| UBS Group AG 0.00% of their portfolio | 5.6k $23.0k | Added +2.6k |
| FIFTH THIRD BANCORP 0.00% of their portfolio | 4.0k $16.1k | Unchanged |
| SIGNATUREFD, LLC 0.00% of their portfolio | 2.9k $11.6k | New |
| JNBA Financial Advisors 0.00% of their portfolio | 2.5k $10.2k | Unchanged |
| JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio | 1.6k $6.5k | Unchanged |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 1.2k $5.0k | Reduced -120 |
| Rockefeller Capital Management L.P. 0.00% of their portfolio | 1.0k $4.1k | New |
| Capital Advisor Network LLC 0.00% of their portfolio | 571 $2.3k | New |
| Federation des caisses Desjardins du Quebec 0.00% of their portfolio | 500 $2.0k | New |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 271 $1.1k | Unchanged |
| Steward Partners Investment Advisory, LLC 0.00% of their portfolio | 229 $932 | Unchanged |
| BARCLAYS PLC 0.00% of their portfolio | 68 $277 | New |