Position in ESE
as of Mar 31, 2026
· filed May 12, 2026
Position Value
$35,095,560
+$14,243,737 QoQ
Shares Held
124,731
+16.9% QoQ
Ownership
0.481%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2020
18 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in ESE Over Time
Shares Held
Position Value (USD)
Derivatives in ESE
reported options exposure · as of Mar 31, 2026CallValue
$393,918
CallShares
1,400
PutValue
$0
PutShares
0
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Scientific & Technical Instruments
Technology · as of Mar 31, 2026JANE STREET GROUP, LLC holds $736,921,362 across 17 Scientific & Technical Instruments names. ESE ranks #6 (4.8% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | KEYS |
Keysight Technologies, Inc.
|
1,237,217 | $349,352,962 | |
| 2 | COHR |
Coherent Corp.
|
384,631 | $91,622,949 | |
| 3 | FTV |
Fortive Corp
|
1,412,678 | $78,092,838 | |
| 4 | TDY |
Teledyne Technologies Inc
|
107,488 | $65,031,313 | |
| 5 | MKSI |
Mks Inc
|
243,253 | $55,901,971 | |
| 6 | ESE |
Esco Technologies Inc
This page
|
124,731 | $35,095,560 | |
| 7 | CGNX |
Cognex Corp
|
470,858 | $23,067,332 | |
| 8 | TRMB |
Trimble Inc.
|
335,267 | $21,869,466 |
All Filings in ESE
Export CSV
19 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $35,095,560 | 124,731 | Shares | Defined | 2026-05-12 | |
| 2026-03-31 | $393,918 | 1,400 | Call | Defined | 2026-05-12 | |
| 2025-12-31 | $20,851,823 | 106,719 | Shares | Defined | 2026-02-12 | |
| 2025-09-30 | $4,484,608 | 21,243 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $5,162,645 | 26,907 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $7,577,452 | 47,621 | Shares | Defined | 2025-05-19 | |
| 2024-12-31 | $984,288 | 7,389 | Shares | Defined | 2025-02-14 | |
| 2024-09-30 | $4,243,570 | 32,901 | Shares | Defined | 2024-11-15 | |
| 2024-06-30 | $2,620,747 | 24,950 | Shares | Defined | 2024-08-15 | |
| 2024-03-31 | $231,548 | 2,163 | Shares | Defined | 2024-05-16 | |
| 2023-12-31 | $1,379,548 | 11,788 | Shares | Defined | 2024-02-15 | |
| 2023-09-30 | $850,559 | 8,144 | Shares | Defined | 2023-11-15 | |
| 2023-06-30 | $1,229,259 | 11,862 | Shares | Defined | 2023-08-14 | |
| 2022-12-31 | $949,721 | 10,849 | Shares | Defined | 2023-02-15 | |
| 2022-06-30 | $386,974 | 5,660 | Shares | Defined | 2022-08-16 | |
| 2021-12-31 | $305,516 | 3,395 | Shares | Defined | 2022-02-15 | |
| 2021-09-30 | $787,402 | 10,226 | Shares | Defined | 2021-11-16 | |
| 2020-12-31 | $285,300 | 2,764 | Shares | Defined | 2021-02-17 | |
| 2020-09-30 | $834,681 | 10,361 | Shares | Defined | 2020-11-17 | |
| No filing history on record for this holder in this stock. | ||||||