Security key
G04537117
Archimedes Tech SPAC Partners II Co. - Ordinary shares, $0.0001 Par Value (ATIIU)
CUSIP: G04537117
Q1 2025 13F Holders as of 31 Mar 2025
- Security type / class
- Equity / Ordinary shares, $0.0001 Par Value
- Total 13F shares
- 19,250,140
- Total 13F value
- $194,106,135
- Share change
- +19,250,140
- SEC-reported price per share
- $10.08
- Number of holders
- 44
- Value change
- +$194,106,135
- Number of buys
- 44
- Shares outstanding
- 29,411,765
Holder snapshot
5 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2025
Institutions
44
Top holders
10
ATIIU full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2025
Archimedes Tech SPAC Partners II Co. SEC filings
Archimedes Tech SPAC Partners II Co. company facts
Broader feeds
Reporting periods
Holder history for CUSIP G04537117
Recent filing periods:
Ownership snapshot
Top reported holders of ATIIU - Archimedes Tech SPAC Partners II Co. - Ordinary shares, $0.0001 Par Value (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Archimedes Tech SPAC Spon...
Disclosed value leader
—
Comparable rows
0/3
Latest evidence
12 Feb 2025
3/4/5
Some rows are evidence-backed but not safely comparable across classes.
3 rows are not safely comparable across share classes.
Quick read
SEC ownership evidence is available, but the rows are not safely comparable across share classes.
0 of 3 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Archimedes Tech SPAC Sponsors II LLC's linked filing trail.
Detailed SEC evidence table Showing 1-3 of 3 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Archimedes Tech SPAC Sponsors II LLC |
3/4/5
10%+ Owner
|
—
mixed-class rows
|
—
6,545,000 shares
mixed-class rows
|
— | 12 Feb 2025 |
| Long Long |
3/4/5
Chief Executive Officer, Director, 10%+ Owner
|
—
mixed-class rows
|
—
6,545,000 shares
mixed-class rows
|
— | 12 Feb 2025 |
| Archimedes Tech SPAC Partners II Co. |
3/4/5
10%+ Owner
|
—
class O/S missing
|
—
5,750,000 shares
|
— | 10 Feb 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
44
Shares
19,250,140
Rows available
44
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2025 vs Q4 2025 Across Filers
Q4 2025 holders
4
Q1 2025 holders
44
Holder diff
40
| Investor | Q4 2025 Shares | Q1 2025 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend