Advent Technologies Holdings, Inc.
Advent Technologies Holdings, Inc. (ADN) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ADN · as of Sep 30, 2025
Ownership Breakdown
17
Institutional Holders
$614,712
Total Inst. Value
▲ $392,900 vs Q2
2.68M
Shares Outstanding
freeFloat 90.27%
184,593
13F Shares Held
▲ 79,033 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ADN largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
DRW SECURITIES, LLC miscellaneous electrical machinery, equipment & supplies | 81.3K | 3.05% | 3.05% | $270.68M | Nov 14, 2025 | NEW |
VANGUARD GROUP INC miscellaneous electrical machinery, equipment & supplies | 33.3K | 1.25% | 1.25% | $111.05M | Nov 7, 2025 | — held |
GEODE CAPITAL MANAGEMENT, LLC miscellaneous electrical machinery, equipment & supplies | 22.7K | 85.34% | 85.34% | $75.76M | Nov 12, 2025 | — held |
BLACKROCK, INC. miscellaneous electrical machinery, equipment & supplies | 17.8K | 66.93% | 66.93% | $59.40M | Nov 12, 2025 | — held |
SUMMIT FINANCIAL, LLC miscellaneous electrical machinery, equipment & supplies | 16.5K | 61.91% | 61.91% | $54.95M | Nov 14, 2025 | NEW |
UBS GROUP AG miscellaneous electrical machinery, equipment & supplies | 4.4K | 16.37% | 16.37% | $14.53M | Nov 13, 2025 | ▲ 4.3K |
CITIGROUP INC miscellaneous electrical machinery, equipment & supplies | 3.6K | 13.55% | 13.55% | $12.03M | Nov 10, 2025 | NEW |
MORGAN STANLEY miscellaneous electrical machinery, equipment & supplies | 2.3K | 8.53% | 8.53% | $7.57M | May 27, 2026 | ▲ 13 |
TOWER RESEARCH CAPITAL LLC (TRC) miscellaneous electrical machinery, equipment & supplies | 969 | 3.64% | 3.64% | $3.23M | Nov 14, 2025 | ▲ 514 |
PNC FINANCIAL SERVICES GROUP, INC. miscellaneous electrical machinery, equipment & supplies | 966 | 3.62% | 3.62% | $3.22M | Nov 7, 2025 | — held |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
3
Increased
+4.8K shares4
New Positions
first time holders2
Decreased
−432 shares4
Sold Out
fully exitedNet shares change (top 50)
+4.4K
+4.8K / −432
Net new holders
+1
4 new / 4 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ADN insider trading · insider activity
Source: SEC Form 4
0
Buy transactions
2
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Gregoriou Vassilios Chairman and CEO | Jun 11, 2021 | Award | 922,118 | $922118.00 | $850.30B | 922.1K | Form 4 ↗ |
Gregoriou Vassilios Chairman and CEO | Jun 11, 2021 | Award | 922,118 | — | — | 6.39M | Form 4 ↗ |
Gregoriou Vassilios Chairman and CEO | Jun 11, 2021 | Award | 922,118 | $10.36 | $9.55M | 922.1K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Advent Technologies Holdings, Inc. (ADN) is primarily owned by institutional investors, who hold approximately 6.9% of total shares outstanding. Company insiders own approximately 9.73%, while retail and public investors account for the remaining 83.38%.
The largest institutional shareholder of Advent Technologies Holdings, Inc. is DRW SECURITIES, LLC, holding approximately 81,286 shares — equal to 3.05% of outstanding shares — as of September 30, 2025.
A total of 17 institutional investors currently hold ADN stock, with a combined institutional value of approximately $614,712 as of the most recent 13F filing period.
Frequently asked questions
ADN ownershipAdvent Technologies Holdings, Inc. (ADN) is primarily owned by institutional investors, who hold approximately 6.9% of shares. The largest shareholder is DRW SECURITIES, LLC with a 3.05% stake. Company insiders hold 9.73%. Data sourced from SEC Form 13F as of September 30, 2025.