Westchester Capital Management, LLC
Position in QUMS — Quantumsphere Acquisition Corp
CIK 1512805
VALHALLA, NY
Position in QUMS
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$3,576,999
+$1,047,000 QoQ
Shares Held
450,000
+28.6% QoQ
Ownership
3.95%
of shares outstanding
% of Portfolio
0.20%
of 13F equity value
Holder Rank
#12
of 32 holders
Holding Since
Sep 2025
4 quarters on record
Voting authority
Sole 9%
Shared 91%
None 0%
Common Shares in QUMS Over Time
Shares Held
Position Value (USD)
Position in Shell Companies
Financial Services · as of Jun 30, 2026Westchester Capital Management, LLC holds $705,472,953 across 171 Shell Companies names. QUMS ranks #72 (0.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | 2,177,638 | $23,351,250 | |||
| 2 | KFII |
K&F Growth Acquisition Corp. II
|
1,726,268 | $15,574,626 | |
| 3 | GTERA |
Globa Terra Acquisition Corp
|
1,414,429 | $14,582,762 | |
| 4 | GIW |
GigCapital8 Corp.
|
1,330,000 | $13,391,768 | |
| 5 | KCHV |
Kochav Defense Acquisition Corp.
|
2,286,000 | $13,335,818 | |
| 6 | OYSE |
Oyster Enterprises II Acquisition Corp
|
2,145,112 | $13,326,700 | |
| 7 | SOUL |
Soulpower Acquisition Corp.
|
1,279,300 | $13,240,753 | |
| 8 | SDHI |
Siddhi Acquisition Corp (Cayman Islands)
|
1,249,197 | $13,016,631 |
All Filings in QUMS
Export CSV
3 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $3,576,999 | 350,000 | Shares | Other | 2026-08-14 | |
| 2026-03-31 | $2,529,999 | 250,000 | Shares | Other | 2026-05-15 | |
| 2025-12-31 | $2,502,498 | 250,000 | Shares | Other | 2026-02-13 | |
| No filing history on record for this holder in this stock. | ||||||