ADNH · Advent Technologies Holdings, Inc. · Holdings
Substantial doubt about the company's ability to continue as a going concern.
“Because of the uncertainty in securing additional funding, delays in growth of revenue, failure to materialize cost-cutting efforts and the insufficient amount of cash and cash equivalents as of the consolidated financial statement filing date, management has concluded that substantial doubt exists with respect to the Company's ability to continue as a going concern for one year from the date the consolidated financial statements are issued.”View the 10-Q filed Nov 17, 2025
3 customers — 10% of revenue (During the year ended December 31, 2024 and 2023)
“During the year ended December 31, 2024 and 2023, the Company had three 3 customers that represented more than 10% of its revenues.”
One customer — 10% of receivables (As of December 31, 2024)
“As of December 31, 2024 and 2023, the Company had one 1 and two 2 major customers, respectively, that represented more than 10% of our accounts receivable balance.”
2 customers — 10% of receivables (As of December 31, 2023)
“As of December 31, 2024 and 2023, the Company had one 1 and two 2 major customers, respectively, that represented more than 10% of our accounts receivable balance.”
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Holder Concentration
Across 1 13F filers · Δ vs Sep 30, 2025Quarterly Activity
Top New Positions
vs Sep 30, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mid XTX Topco Ltd | 16,835 | $7,070 |
Top Sold-Out Positions
vs Sep 30, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mid DRW Securities, LLC | 81,286 | $270,682 | |
| Mega VANGUARD GROUP INC | 33,349 | $111,051 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | 22,745 | $75,740 | |
| Mega BlackRock, Inc. | 17,837 | $59,397 | |
| Mid Summit Financial, LLC | 16,500 | $54,945 |
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mid XTX Topco Ltd | $7,070 | 100.00% | 16,835 | Shares | 2026-02-17 |