ATII · Archimedes Tech SPAC Partners II Co. · Shareholders & Ownership
Substantial doubt about the company's ability to continue as a going concern.
“In connection with the Company's assessment of going concern considerations in accordance with FASB ASC 2014-15, "Disclosures of Uncertainties about an Entity's Ability to Continue as a Going Concern," management has determined that the Company currently lacks the liquidity it needs to sustain operations for a reasonable period of time, which is considered to be at least one year from the date that the unaudited condensed consolidated financial statements are issued as it expects to continue to incur significant costs in pursuit of its acquisition plans. In addition, if the Company is unable to complete an initial business combination by November 12, 2026, then the Company will cease all operations except for the purpose of liquidating. The date for mandatory liquidation and subsequent dissolution and liquidity concerns raise substantial doubt about the Company's ability to continue as a going concern. Management plans to consummate an initial business combination prior to the mandatory liquidation date. No adjustments have been made to the carrying amounts of assets or liabilities should the Company be required to liquidate after November 12, 2026.”View the 10-Q filed Aug 13, 2026
Every disclosed holder of ATII in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns ATII
13F quarter Jun 30, 2026No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 26,084,208 | 88.15% |
| Insiders (Forms 3, 4, 5) | 18,310,000 | 61.88% |
| 13D/G-only blocks | 1,148,590 | 3.88% |
| Remaining | 15,952,798 | -53.91% |
| Registered funds (N-PORT, not summed) | 820 | 0.00% |
Shares outstanding: 29,590,000, the issuer's latest cover-page count restated onto today's split basis.
Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of ATII
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
|
6,280,000 | ||
| 2 |
|
6,280,000 | ||
| 3 |
|
5,750,000 | ||
| 4 |
TENOR CAPITAL MANAGEMENT Co., L.P.
13F
CIK 1346554 · Registered investment adviser · Jun 30, 2026
Classes ATII, ATIIW
|
2,117,830 | ||
| 5 |
Magnetar Financial LLC
13F
CIK 1352851 · Registered investment adviser · Jun 30, 2026
Classes ATII, ATIIW
|
1,734,902 | ||
| 6 |
|
1,426,000 | ||
| 7 |
Fort Baker Capital Management LP
13F
CIK 1688382 · Registered investment adviser · Jun 30, 2026
Classes ATII, ATIIW
|
1,371,923 | ||
| 8 |
Harraden Circle Investments, LLC
13F
CIK 1910592 · Registered investment adviser · Jun 30, 2026
Classes ATII, ATIIW
|
1,366,261 | ||
| 9 |
Linden Advisors LP
13F
CIK 1279396 · Registered investment adviser · Jun 30, 2026
Classes ATII, ATIIW
|
1,352,411 | ||
| 10 |
|
1,269,131 | ||
| 11 |
|
1,148,590 | ||
| 12 |
|
1,092,679 | ||
| 13 |
AQR Arbitrage LLC
13F
CIK 1167456 · Registered investment adviser · Jun 30, 2026
Classes ATII, ATIIW
|
1,071,628 | ||
| 14 |
ARISTEIA CAPITAL, L.L.C.
13F
CIK 1080171 · Registered investment adviser · Jun 30, 2026
Classes ATII, ATIIW
|
988,491 | ||
| 15 |
|
806,945 | ||
| 16 |
Ghisallo Capital Management LLC
13F
CIK 1825214 · Registered investment adviser · Jun 30, 2026
|
800,000 | ||
| 17 |
Alberta Investment Management Corp
13F
CIK 1463559 · Non-US institution · Jun 30, 2026
Classes ATII, ATIIW
|
775,000 | ||
| 18 |
Hudson Bay Capital Management LP
13F
CIK 1393825 · Registered investment adviser · Jun 30, 2026
Classes ATII, ATIIW
|
739,994 | ||
| 19 |
TWO SIGMA INVESTMENTS, LP
13F
CIK 1179392 · Registered investment adviser · Jun 30, 2026
|
725,000 | ||
| 20 |
Sculptor Capital LP
13F
CIK 1054587 · Registered investment adviser · Jun 30, 2026
Classes ATII, ATIIW
|
702,819 | ||
| 21 |
MOORE CAPITAL MANAGEMENT, LP
13F
CIK 1448574 · Registered investment adviser · Jun 30, 2026
Classes ATII, ATIIW
|
675,000 | ||
| 22 |
Shay Capital LLC
13F
CIK 1723643 · Unknown · Jun 30, 2026
|
623,687 | ||
| 23 |
Governors Lane LP
13F
CIK 1644187 · Registered investment adviser · Jun 30, 2026
|
604,857 | ||
| 24 |
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
13F
CIK 1535845 · Non-US institution · Jun 30, 2026
|
500,000 | ||
| 25 |
Radcliffe Capital Management, L.P.
13F
CIK 1218275 · Registered investment adviser · Jun 30, 2026
|
478,061 | ||
| 26 |
|
430,000 | ||
| 27 |
WHITEBOX ADVISORS LLC
13F
CIK 1257391 · Registered investment adviser · Jun 30, 2026
Classes ATII, ATIIW
|
375,000 | ||
| 28 |
FNY Investment Advisers, LLC
13F
CIK 1742998 · Unknown · Jun 30, 2026
|
327,200 | ||
| 29 |
DLD Asset Management, LP
13F
CIK 1578299 · Registered investment adviser · Jun 30, 2026
Classes ATII, ATIIW
|
264,853 | ||
| 30 |
Shaolin Capital Management LLC
13F
CIK 1766806 · Registered investment adviser · Jun 30, 2026
Classes ATII, ATIIW
|
257,811 | ||
| 31 |
CITADEL ADVISORS LLC
13F
CIK 1423053 · Registered investment adviser · Jun 30, 2026
|
250,266 | ||
| 32 |
RIVERNORTH CAPITAL MANAGEMENT, LLC
13F
CIK 1447578 · Registered investment adviser · Jun 30, 2026
|
224,942 | ||
| 33 |
Periscope Capital Inc.
13F
CIK 1695320 · Exempt reporting adviser · Jun 30, 2026
Classes ATII, ATIIW
|
215,000 | ||
| 34 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
|
205,090 | ||
| 35 |
L1 Global Manager Pty Ltd
13F
CIK 1878742 · Unknown · Jun 30, 2026
|
200,000 | ||
| 36 |
|
187,500 | ||
| 37 |
|
185,717 | ||
| 38 |
Jain Global LLC
13F
CIK 2024579 · Registered investment adviser · Jun 30, 2026
|
185,108 | ||
| 39 |
SkyView Investment Advisors, LLC
13F
CIK 1848237 · Unknown · Jun 30, 2026
|
182,495 | ||
| 40 |
CSS LLC/IL
13F
CIK 1103646 · Unknown · Jun 30, 2026
|
151,718 | ||
| 41 |
Verition Fund Management LLC
13F
CIK 1454027 · Registered investment adviser · Jun 30, 2026
|
140,797 | ||
| 42 |
TUDOR INVESTMENT CORP ET AL
13F
CIK 923093 · Registered investment adviser · Jun 30, 2026
|
123,842 | ||
| 43 |
|
99,164 | ||
| 44 |
CANTOR FITZGERALD, L. P.
13F
CIK 1024896 · Unknown · Jun 30, 2026
|
88,283 | ||
| 45 |
TORONTO DOMINION BANK
13F
CIK 947263 · Bank · Jun 30, 2026
|
82,550 | ||
| 46 |
Schonfeld Strategic Advisors LLC
13F
CIK 1665241 · Registered investment adviser · Jun 30, 2026
Classes ATII, ATIIW
|
80,000 | ||
| 47 |
Baird Financial Group, Inc.
13F
CIK 1648711 · Unknown · Jun 30, 2026
|
78,500 | ||
| 48 |
Alpine Global Management, LLC
13F
CIK 1581655 · Unknown · Jun 30, 2026
|
71,039 | ||
| 49 |
MILLENNIUM MANAGEMENT LLC
13F
CIK 1273087 · Registered investment adviser · Jun 30, 2026
|
69,384 | ||
| 50 |
GLAZER CAPITAL, LLC
13F
CIK 1076809 · Registered investment adviser · Jun 30, 2026
|
50,100 |
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
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