Westchester Capital Management, LLC
Position in ATII — Archimedes Tech SPAC Partners II Co.
CIK 1512805
VALHALLA, NY
Position in ATII
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$9,443,367
+$45,356 QoQ
Shares Held
907,144
0.0% QoQ
Ownership
3.07%
of shares outstanding
% of Portfolio
0.50%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2025
4 quarters on record
Voting authority
Sole 7%
Shared 93%
None 0%
Common Shares in ATII Over Time
Shares Held
Position Value (USD)
Position in Shell Companies
Financial Services · as of Mar 31, 2026Westchester Capital Management, LLC holds $654,845,959 across 108 Shell Companies names. ATII ranks #23 (1.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ANSC |
Agriculture & Natural Solutions Acquisition Corp
|
2,044,768 | $23,085,429 | |
| 2 | HYAC |
Haymaker Acquisition Corp. 4
|
1,939,028 | $22,376,381 | |
| 3 | DMAA |
Drugs Made In America Acquisition Corp.
|
1,669,000 | $17,491,119 | |
| 4 | SZZL |
Sizzle Acquisition Corp. II
|
1,561,745 | $16,054,737 | |
| 5 | KFII |
K&F Growth Acquisition Corp. II
|
1,476,268 | $15,397,475 | |
| 6 | GTERA |
Globa Terra Acquisition Corp
|
1,414,429 | $14,441,318 | |
| 7 | TACH |
Titan Acquisition Corp.
|
1,344,693 | $13,836,890 | |
| 8 | GIW |
GigCapital8 Corp.
|
1,330,000 | $13,260,098 |
All Filings in ATII
Export CSV
4 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $9,443,367 | 907,144 | Shares | Other | 2026-05-15 | |
| 2025-12-31 | $9,398,011 | 907,144 | Shares | Other | 2026-02-13 | |
| 2025-09-30 | $9,188,998 | 900,000 | Shares | Other | 2025-11-14 | |
| 2025-06-30 | $6,649,499 | 650,000 | Shares | Other | 2025-08-14 | |
| No filing history on record for this holder in this stock. | ||||||