ATII Archimedes Tech SPAC Partners II Co. - Ordinary Shares
NASDAQ · N/A close Oct 2, 2026
$10.68
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$10.2152w low
$11.4052w high
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$10–$11
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ATII Stock Snapshot Price, market cap, P/E, EPS, ROE, debt/equity, 52-week range
Price
$10.68
52W Range
$10–$11
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value · ≈ 5Y avg · industry median · verdict relative to median
Earnings History EPS actual vs estimate, surprise %, beat rate, next earnings date
Next Report
Nov 05, 2026
Institutional owners (13F) 51 filers · $182.2M total · As of June 30, 2026
Institutions that report holding this stock in their quarterly SEC Form 13F. Long positions only; a single filer may appear twice for separate option legs. Large offsetting put/call legs typically reflect market-making or hedged inventory, not directional conviction.
Holders
51
Value held
$182.2M
New positions
13
Exited positions
15
Institutional activity — Q2 2026 vs prior quarter
| New positions | Exited positions | Increased | Decreased | Net shares change |
|---|---|---|---|---|
| 13 (+6 vs prior Q) | 15 (+12 vs prior Q) | 3 (-3 vs prior Q) | 23 (+13 vs prior Q) | -4.0M |
Compared to Q1 2026. SEC Form 13F filings are due within 45 days of quarter-end plus a short buffer for late filers — quarters still inside that window are skipped in favor of the most recent fully-reported pair.
| Institution | Value | Shares | % of tracked 13F | Type |
|---|---|---|---|---|
| TENOR CAPITAL MANAGEMENT Co., L.P. | $14,745,207 | 1,367,830 | 8.09% | Shares |
| Fort Baker Capital Management LP | $14,345,442 | 1,330,746 | 7.87% | Shares |
| Magnetar Financial LLC | $13,984,916 | 1,297,302 | 7.68% | Shares |
| D. E. Shaw & Co., Inc. | $12,273,030 | 1,138,500 | 6.74% | Shares |
| Decagon Asset Management LLP | $10,109,797 | 937,829 | 5.55% | Shares |
| Linden Advisors LP | $9,144,383 | 848,273 | 5.02% | Shares |
| Ghisallo Capital Management LLC | $8,624,000 | 800,000 | 4.73% | Shares |
| TWO SIGMA INVESTMENTS, LP | $7,815,500 | 725,000 | 4.29% | Shares |
| Hudson Bay Capital Management LP | $7,546,000 | 700,000 | 4.14% | Shares |
| Shay Capital LLC | $6,723,346 | 623,687 | 3.69% | Shares |
| Governors Lane LP | $6,520,358 | 604,857 | 3.58% | Shares |
| AQR Arbitrage LLC | $6,363,024 | 590,262 | 3.49% | Shares |
| Sculptor Capital LP | $5,957,233 | 552,619 | 3.27% | Shares |
| K2 PRINCIPAL FUND, L.P. | $5,672,727 | 526,227 | 3.11% | Shares |
| LMR Partners LLP | $5,163,383 | 478,978 | 2.83% | Shares |
| Radcliffe Capital Management, L.P. | $5,153,498 | 478,061 | 2.83% | Shares |
| MOORE CAPITAL MANAGEMENT, LP | $4,851,000 | 450,000 | 2.66% | Shares |
| Alberta Investment Management Corp | $4,312,000 | 400,000 | 2.37% | Shares |
| CITADEL ADVISORS LLC | $2,697,867 | 250,266 | 1.48% | Shares |
| WHITEBOX ADVISORS LLC | $2,695,000 | 250,000 | 1.48% | Shares |
| Harraden Circle Investments, LLC | $2,529,646 | 234,661 | 1.39% | Shares |
| GOLDMAN SACHS GROUP INC | $2,210,870 | 205,090 | 1.21% | Shares |
| ARISTEIA CAPITAL, L.L.C. | $2,156,000 | 200,000 | 1.18% | Shares |
| L1 Global Manager Pty Ltd | $2,156,000 | 200,000 | 1.18% | Shares |
| DLD Asset Management, LP | $2,106,983 | 195,453 | 1.16% | Shares |
| Jain Global LLC | $1,995,464 | 185,108 | 1.10% | Shares |
| SkyView Investment Advisors, LLC | $1,967,000 | 182,495 | 1.08% | Shares |
| Periscope Capital Inc. | $1,886,500 | 175,000 | 1.04% | Shares |
| Verition Fund Management LLC | $1,517,792 | 140,797 | 0.83% | Shares |
| MMCAP International Inc. SPC | $1,347,500 | 125,000 | 0.74% | Shares |
| TUDOR INVESTMENT CORP ET AL | $1,335,017 | 123,842 | 0.73% | Shares |
| CANTOR FITZGERALD, L. P. | $951,691 | 88,283 | 0.52% | Shares |
| TORONTO DOMINION BANK | $889,889 | 82,550 | 0.49% | Shares |
| Baird Financial Group, Inc. | $846,230 | 78,500 | 0.46% | Shares |
| Shaolin Capital Management LLC | $821,123 | 76,171 | 0.45% | Shares |
| MILLENNIUM MANAGEMENT LLC | $747,960 | 69,384 | 0.41% | Shares |
| Schonfeld Strategic Advisors LLC | $539,000 | 50,000 | 0.30% | Shares |
| CLEAR STREET LLC | $383,973 | 37,534 | 0.21% | Shares |
| Clear Street Group Inc. | $269,500 | 25,000 | 0.15% | Shares |
| BNP PARIBAS FINANCIAL MARKETS | $256,456 | 23,790 | 0.14% | Shares |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | $189,143 | 17,497 | 0.10% | Shares |
| READYSTATE ASSET MANAGEMENT LP | $135,052 | 12,528 | 0.07% | Shares |
| GEODE CAPITAL MANAGEMENT, LLC | $119,679 | 11,102 | 0.07% | Shares |
| EverSource Wealth Advisors, LLC | $91,630 | 8,500 | 0.05% | Shares |
| UBS Group AG | $17,873 | 1,658 | 0.01% | Shares |
| FNY Investment Advisers, LLC | $3,527 | 327,200 | 0.00% | Shares |
| Mint Tower Capital Management B.V. | $3,234 | 300,000 | 0.00% | Shares |
| GLAZER CAPITAL, LLC | $540 | 50,100 | 0.00% | Shares |
| HRT FINANCIAL LP | $508 | 47,190 | 0.00% | Shares |
| MORGAN STANLEY | $377 | 35 | 0.00% | Shares |
Company insiders 2 insiders · 1 officers · 1 directors
| Insider | Role | Last activity | Shares owned | Buys 12m | Sells 12m | Net 12m |
|---|---|---|---|---|---|---|
| Long Long | Chief Executive Officer | Feb. 12, 2025 P | 6,280,000 | 0 | 0 | $0 |
| Archimedes Tech SPAC Sponsors II LLC | 10% owner | Feb. 12, 2025 P | 6,280,000 | 0 | 0 | $0 |
Insiders from SEC Form 3/4/5 filings; net = open-market P/S only
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