Position in ESE
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$11,051,462
+$6,028,445 QoQ
Shares Held
31,572
+76.9% QoQ
Ownership
0.122%
of shares outstanding
% of Portfolio
0.34%
of 13F equity value
Holder Rank
#90
of 447 holders
Holding Since
Jun 2025
5 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in ESE Over Time
Shares Held
Position Value (USD)
Position in Scientific & Technical Instruments
Technology · as of Jun 30, 2026CASTLEARK MANAGEMENT LLC holds $33,981,381 across 4 Scientific & Technical Instruments names. ESE ranks #2 (32.5% of the industry book) .
All Filings in ESE
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5 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $11,051,462 | 31,572 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $5,023,017 | 17,852 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $7,163,388 | 36,662 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $6,593,387 | 31,232 | Shares | Sole | 2025-11-17 | |
| 2025-06-30 | $5,771,449 | 30,080 | Shares | Sole | 2025-08-18 | |
| No filing history on record for this holder in this stock. | ||||||