Aduro Clean Technologies Inc. (ADUR) Ownership
ADUR ownership summary
as of October 18, 2026- Institutions
- 2.9% of shares outstanding
- Insiders
- 29.54% of shares outstanding
- Shares outstanding
- 35.4M
- Float
- 25.3M shares available to trade
- Short interest
- — 3.3M shares short
- Days to cover
- 11.51 short interest up 6.9% vs prior month
- Institutions 2.90%
- Insiders 29.54%
- Other investors 67.56%
ADUR top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Mmcap International Inc. Spc | 0.39% | 140K | $1.4M | +140,432 (0.0%) | June 30, 2026 |
| 2 | Marshall Wace Asset Management Ltd | 0.21% | 77K | $761,041 | +76,525 (0.0%) | June 30, 2026 |
| 3 | Jane Street Group LLC | 0.21% | 73K | $730,858 | +47,002 (+177.4%) | June 30, 2026 |
| 4 | Fiduciary Alliance LLC | 0.18% | 65K | $646,037 | +64,961 (0.0%) | June 30, 2026 |
| 5 | Two Sigma Investments LLC | 0.11% | 41K | $403,926 | +10,854 (+36.5%) | June 30, 2026 |
| 6 | Aptus Capital Advisors, LLC | 0.11% | 40K | $398,804 | +40,101 (0.0%) | June 30, 2026 |
| 7 | GUARDIAN WEALTH ADVISORS, LLC / NC | 0.11% | 40K | $397,800 | +40,000 (0.0%) | June 30, 2026 |
| 8 | Goss Wealth Management LLC | 0.11% | 38K | $381,212 | +5,916 (+18.3%) | June 30, 2026 |
| 9 | DGS Capital Management, LLC | 0.11% | 38K | $377,572 | — | March 31, 2026 |
| 10 | Diametric Capital, LP | 0.09% | 32K | $317,086 | −84,951 (−72.7%) | June 30, 2026 |
| 11 | UBS Group AG | 0.09% | 31K | $310,403 | −44,005 (−58.5%) | June 30, 2026 |
| 12 | HRT FINANCIAL LLC | 0.08% | 28K | $276,938 | −14,614 (−34.4%) | June 30, 2026 |
| 13 | Morgan Stanley - Brokerage Accounts | 0.07% | 25K | $244,458 | +3,472 (+16.4%) | June 30, 2026 |
| 14 | One Wealth Advisors, LLC | 0.06% | 22K | $220,779 | — | June 30, 2026 |
| 15 | Perigon Wealth Management, LLC | 0.06% | 21K | $210,784 | +5,700 (+36.8%) | June 30, 2026 |
| 16 | State Street Corp | 0.05% | 19K | $191,909 | +199 (+1.0%) | June 30, 2026 |
| 17 | Geode Capital Management, LLC | 0.05% | 19K | $191,262 | — | June 30, 2026 |
| 18 | IMC-Chicago, LLC | 0.05% | 17K | $166,410 | −15,839 (−48.6%) | June 30, 2026 |
| 19 | Stifel Financial Corp | 0.05% | 17K | $166,002 | −20,200 (−54.8%) | June 30, 2026 |
| 20 | Commonwealth Equity Services, LLC | 0.04% | 16K | $154,983 | +15,584 (0.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 12 holders added 451K shares and 5 cut 180K.
ADUR top mutual fund and ETF holders
5 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Fidelity Nasdaq Composite Index | 0.13% | 47K | $469,245 | +27,952 (+145.3%) | August 31, 2026 |
| 2 | State Street® SPDR® S&P® Intl Sm Cp ETF | 0.07% | 23K | $231,868 | — | September 30, 2026 |
| 3 | Ultra Valorem SICAV | 0.06% | 20K | $199,029 | +20,013 (0.0%) | December 31, 2025 |
| 4 | Mistral Inversiones 536 SICAV | 0.01% | 1,984 | $19,731 | +1,984 (0.0%) | December 31, 2025 |
| 5 | BSF Systematic US Eq Abs Ret A2 USD | <0.01% | 528 | $5,251 | — | December 31, 2025 |
Funds report holdings monthly or quarterly; dates differ by fund.
ADUR shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns ADUR
Institutional investors own 2.9% of Aduro Clean Technologies's shares and insiders 29.54%. The largest holder is Mmcap International Inc. Spc with 0.39% of the shares (140K), as of June 30, 2026. Among the top 20 institutions, 12 added shares and 5 reduced their stake in the latest filings. The share count rose 1,218.3% since 2018.
Related: ADUR analyst forecast, ADUR key metrics. See the ADUR stock overview for the latest quote and news.
ADUR ownership FAQ
Who owns the most Aduro Clean Technologies stock?
The largest shareholders of Aduro Clean Technologies are Mmcap International Inc. Spc (0.39%), Marshall Wace Asset Management Ltd (0.21%), Jane Street Group LLC (0.21%), Fiduciary Alliance LLC (0.18%), Two Sigma Investments LLC (0.11%).
What percentage of Aduro Clean Technologies is owned by institutions?
Institutions hold 2.9% of Aduro Clean Technologies's shares outstanding; insiders hold 29.54%.
Which funds own Aduro Clean Technologies?
The largest fund holders of Aduro Clean Technologies are Fidelity Nasdaq Composite Index (0.13%), State Street® SPDR® S&P® Intl Sm Cp ETF (0.07%), Ultra Valorem SICAV (0.06%), Mistral Inversiones 536 SICAV (0.01%), BSF Systematic US Eq Abs Ret A2 USD (<0.01%).
How many shares of Aduro Clean Technologies are outstanding?
Aduro Clean Technologies has 35.4M shares outstanding, of which 25.3M are in the public float.