Vault-13

ARCHIMEDES TECH SPAC PARTNER

ORD SHS · CUSIP G04537109

50 institutional holders -4 vs Q1 2026
17,512,63217.5m shares reported held*
$188.8mreported value*
12 new 3 added 23 reduced 15 sold out net sold ≈ $48.2m (-4.5m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $10.78.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

0204060Q2 25: 43Q3 25: 46Q4 25: 49Q1 26: 54Q2 26: 5050Q2 25Q3 25Q4 25Q1 26Q2 26
Numbers
QuarterHolders
Q2 202543
Q3 202546
Q4 202549
Q1 202654
Q2 202650

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
40040Q3 25: 9 bought or addedQ3 25: 11 cut or sold outQ3 25Q4 25: 13 bought or addedQ4 25: 9 cut or sold outQ4 25Q1 26: 13 bought or addedQ1 26: 13 cut or sold outQ1 26Q2 26: 15 bought or addedQ2 26: 38 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 2025911
Q4 2025139
Q1 20261313
Q2 20261538

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$10k$20k$30kQ3 25 calls: $29.2kQ3 25 puts: $0Q3 25P/C 0.00Q4 25 calls: $0Q4 25 puts: $0Q4 25P/C —Q1 26 calls: $0Q1 26 puts: $0Q1 26P/C —Q2 26 calls: $0Q2 26 puts: $0Q2 26P/C —
Numbers
QuarterCallsPutsP/C
Q3 2025$29.2k$00.00
Q4 2025$0$0—
Q1 2026$0$0—
Q2 2026$0$0—

Biggest buyers

Fort Baker Capital Management LP New +1,330,746+1.3m
Decagon Asset Management LLP New +937,829+937.8k
Shay Capital LLC New +623,687+623.7k
K2 PRINCIPAL FUND, L.P. Added +438,327+438.3k
FNY Investment Advisers, LLC New +327,200+327.2k
CITADEL ADVISORS LLC Added +239,889+239.9k
Harraden Circle Investments, LLC New +234,661+234.7k
CANTOR FITZGERALD, L. P. New +176,566+176.6k
TUDOR INVESTMENT CORP ET AL New +123,842+123.8k
HRT FINANCIAL LP New +47,190+47.2k

Biggest sellers

Westchester Capital Management, LLC Sold out -907,144-907.1k
GLAZER CAPITAL, LLC Reduced -699,900-699.9k
TORONTO DOMINION BANK Reduced -567,450-567.5k
PICTON MAHONEY ASSET MANAGEMENT Sold out -500,000-500.0k
RIVERNORTH CAPITAL MANAGEMENT, LLC Sold out -427,500-427.5k
RLH Capital LLC Sold out -400,907-400.9k
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS Sold out -400,000-400.0k
LMR Partners LLP Reduced -371,022-371.0k
J. Goldman & Co LP Sold out -369,778-369.8k
Alberta Investment Management Corp Reduced -350,000-350.0k

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

No one currently above 5% in the filings since 19 Dec 2024.

Fell to 5% or below in the last year: BARCLAYS PLC (3.9%, 2026-02-11)

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 TENOR CAPITAL MANAGEMENT Co., L.P. 0.21% of their portfolio NEW YORK, NY 1,367,8301.4m $14.7m $14.7m 0.21% Reduced -132.2k -132,170
2 Fort Baker Capital Management LP 1.14% of their portfolio Larkspur, CA 1,330,7461.3m $14.3m $14.3m 1.14% New
3 Magnetar Financial LLC 0.13% of their portfolio EVANSTON, IL 1,297,3021.3m $14.0m $14.0m 0.13% Reduced -2.7k -2,698
4 D. E. Shaw & Co., Inc. 0.01% of their portfolio New York, NY 1,138,5001.1m $12.3m $12.3m 0.01% Unchanged
5 Decagon Asset Management LLP 2.02% of their portfolio LONDON, X0 937,829937.8k $10.1m $10.1m 2.02% New
6 Linden Advisors LP 0.05% of their portfolio New York, NY 848,273848.3k $9.1m $9.1m 0.05% Reduced -151.7k -151,727
7 Ghisallo Capital Management LLC 0.17% of their portfolio BOSTON, MA 800,000800.0k $8.6m $8.6m 0.17% Unchanged
8 TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio NEW YORK, NY 725,000725.0k $7.8m $7.8m 0.01% Unchanged
9 Hudson Bay Capital Management LP 0.04% of their portfolio STAMFORD, CT 700,000700.0k $7.5m $7.5m 0.04% Unchanged
10 Shay Capital LLC 0.74% of their portfolio NEW YORK, NY 623,687623.7k $6.7m $6.7m 0.74% New
11 Governors Lane LP 0.65% of their portfolio NEW YORK, NY 604,857604.9k $6.5m $6.5m 0.65% Reduced -154.7k -154,699
12 AQR Arbitrage LLC 0.09% of their portfolio Greenwich, CT 590,262590.3k $6.4m $6.4m 0.09% Reduced -330.4k -330,410
13 Sculptor Capital LP 0.06% of their portfolio New York, NY 552,619552.6k $6.0m $6.0m 0.06% Reduced -48.0k -48,027
14 K2 PRINCIPAL FUND, L.P. 0.52% of their portfolio TORONTO, A6 526,227526.2k $5.7m $5.7m 0.52% Added +438.3k +438,327
15 LMR Partners LLP 0.04% of their portfolio LONDON, X0 478,978479.0k $5.2m $5.2m 0.04% Reduced -371.0k -371,022
16 Radcliffe Capital Management, L.P. 0.39% of their portfolio BALA CYNWYD, PA 478,061478.1k $5.2m $5.2m 0.39% Reduced -183.3k -183,276
17 MOORE CAPITAL MANAGEMENT, LP 0.11% of their portfolio NEW YORK, NY 450,000450.0k $4.9m $4.9m 0.11% Unchanged
18 Alberta Investment Management Corp 0.02% of their portfolio EDMONTON, A0 400,000400.0k $4.3m $4.3m 0.02% Reduced -350.0k -350,000
19 FNY Investment Advisers, LLC 1.28% of their portfolio NEW YORK, NY 327,200327.2k $3.5m $3.5m 1.28% New
20 Mint Tower Capital Management B.V. 0.38% of their portfolio AMSTERDAM, P7 300,000300.0k $3.2m $3.2m 0.38% Unchanged
21 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 250,266250.3k $2.7m $2.7m 0.00% Added +239.9k +239,889
22 WHITEBOX ADVISORS LLC 0.04% of their portfolio MINNEAPOLIS, MN 250,000250.0k $2.7m $2.7m 0.04% Unchanged
23 Harraden Circle Investments, LLC 0.32% of their portfolio NEW YORK, NY 234,661234.7k $2.5m $2.5m 0.32% New
24 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 205,090205.1k $2.2m $2.2m 0.00% Reduced -122.4k -122,360
25 ARISTEIA CAPITAL, L.L.C. 0.03% of their portfolio GREENWICH, CT 200,000200.0k $2.2m $2.2m 0.03% Reduced -50.0k -50,000
26 L1 Global Manager Pty Ltd 1.75% of their portfolio Melbourne, C3 200,000200.0k $2.2m $2.2m 1.75% Unchanged
27 DLD Asset Management, LP 0.17% of their portfolio NEW YORK, NY 195,453195.5k $2.1m $2.1m 0.17% Added +45.5k +45,453
28 Jain Global LLC 0.02% of their portfolio NEW YORK, NY 185,108185.1k $2.0m $2.0m 0.02% Reduced -314.9k -314,892
29 CANTOR FITZGERALD, L. P. 0.02% of their portfolio NEW YORK, NY 176,566176.6k $1.9m $1.9m 0.02% New
30 Periscope Capital Inc. 0.30% of their portfolio Toronto, A6 175,000175.0k $1.9m $1.9m 0.30% Reduced -177.9k -177,880
31 Verition Fund Management LLC 0.01% of their portfolio GREENWICH, CT 140,797140.8k $1.5m $1.5m 0.01% Reduced -90.7k -90,673
32 MMCAP International Inc. SPC 0.11% of their portfolio GRAND CAYMAN, E9 125,000125.0k $1.3m $1.3m 0.11% Unchanged
33 TUDOR INVESTMENT CORP ET AL 0.01% of their portfolio STAMFORD, CT 123,842123.8k $1.3m $1.3m 0.01% New
34 TORONTO DOMINION BANK 0.00% of their portfolio TORONTO, ONTARIO, A6 82,55082.5k $889.9k $889.9k 0.00% Reduced -567.5k -567,450
35 Baird Financial Group, Inc. 0.00% of their portfolio MILWAUKEE, WI 78,50078.5k $846.2k $846.2k 0.00% Unchanged
36 Shaolin Capital Management LLC 0.05% of their portfolio Miami, FL 76,17176.2k $821.1k $821.1k 0.05% Reduced -194.6k -194,612
37 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 69,38469.4k $748.0k $748.0k 0.00% Reduced -238.6k -238,601
38 GLAZER CAPITAL, LLC 0.01% of their portfolio New York, NY 50,10050.1k $540.0k $540.0k 0.01% Reduced -699.9k -699,900
39 Schonfeld Strategic Advisors LLC 0.00% of their portfolio NEW YORK, NY 50,00050.0k $539.0k $539.0k 0.00% Reduced -123.5k -123,515
40 HRT FINANCIAL LP 0.00% of their portfolio NEW YORK, NY 47,19047.2k $508.0k $508.0k 0.00% New
41 Clear Street Group Inc. 0.00% of their portfolio NEW YORK, NY 25,00025.0k $269.5k $269.5k 0.00% Reduced -52.5k -52,452
42 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 23,79023.8k $256.5k $256.5k 0.00% Reduced -14.0k -13,954
43 MIZUHO SECURITIES USA LLC 0.00% of their portfolio NEW YORK, NY 19,46919.5k $202.5k $202.5k 0.00% Unchanged
44 HIGHBRIDGE CAPITAL MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 17,49717.5k $189.1k $189.1k 0.01% New
45 READYSTATE ASSET MANAGEMENT LP 0.01% of their portfolio CHICAGO, IL 12,52812.5k $135.1k $135.1k 0.01% Reduced -136.2k -136,206
46 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 11,10211.1k $119.7k $119.7k 0.00% Unchanged
47 EverSource Wealth Advisors, LLC 0.00% of their portfolio BIRMINGHAM, AL 8,5008.5k $91.6k $91.6k 0.00% New
48 UBS Group AG 0.00% of their portfolio ZURICH, V8 1,6581.7k $17.9k $17.9k 0.00% New
49 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 3535 $377 $377 0.00% Reduced -27 -27
50 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 44 $43 $43 0.00% New