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 Mar 31, 2025
Ownership Breakdown
11
Institutional Holders
▼ 5 vs Q4
$335,237
Total Inst. Value
▼ $176,451 vs Q4
2.68M
Shares Outstanding
freeFloat 90.27%
79,608
13F Shares Held
▼ 22,739 vs Q4
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
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC miscellaneous electrical machinery, equipment & supplies | 33.3K | 1.26% | 1.26% | $140.07M | May 9, 2025 | — held |
GEODE CAPITAL MANAGEMENT, LLC miscellaneous electrical machinery, equipment & supplies | 21.6K | 82.01% | 82.01% | $90.83M | May 13, 2025 | ▲ 1.4K |
BLACKROCK, INC. miscellaneous electrical machinery, equipment & supplies | 17.8K | 67.65% | 67.65% | $75.62M | May 2, 2025 | — held |
GROUP ONE TRADING, L.P. miscellaneous electrical machinery, equipment & supplies | 2.9K | 10.83% | 10.83% | $11.99M | May 14, 2025 | ▼ 177 |
MORGAN STANLEY miscellaneous electrical machinery, equipment & supplies | 2.3K | 8.65% | 8.65% | $9.67M | May 15, 2025 | ▲ 30 |
PNC FINANCIAL SERVICES GROUP, INC. miscellaneous electrical machinery, equipment & supplies | 966 | 3.66% | 3.66% | $4.09M | May 9, 2025 | — held |
SBI SECURITIES CO., LTD. miscellaneous electrical machinery, equipment & supplies | 489 | 1.85% | 1.85% | $2.07M | May 2, 2025 | ▼ 20 |
ARCHER INVESTMENT CORP miscellaneous electrical machinery, equipment & supplies | 108 | 0.41% | 0.41% | $458,000 | May 5, 2025 | — held |
UBS GROUP AG miscellaneous electrical machinery, equipment & supplies | 75 | 0.28% | 0.28% | $318,000 | May 13, 2025 | ▼ 12.9K |
BANK OF AMERICA CORP /DE/ miscellaneous electrical machinery, equipment & supplies | 19 | 0.07% | 0.07% | $81,000 | May 15, 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
Q1 2025 vs prior quarter
Q1 2025
2
Increased
+1.4K shares0
New Positions
first time holders3
Decreased
−13.1K shares3
Sold Out
fully exitedNet shares change (top 50)
11.7K
+1.4K / −13.1K
Net new holders
-4
0 new / 3 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 3.0% of total shares outstanding. Company insiders own approximately 9.73%, while retail and public investors account for the remaining 87.30%.
The largest institutional shareholder of Advent Technologies Holdings, Inc. is VANGUARD GROUP INC, holding approximately 33,349 shares — equal to 1.26% of outstanding shares — as of March 31, 2025.
A total of 11 institutional investors currently hold ADN stock, with a combined institutional value of approximately $335,237 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 3.0% of shares. The largest shareholder is VANGUARD GROUP INC with a 1.26% stake. Company insiders hold 9.73%. Data sourced from SEC Form 13F as of March 31, 2025.