Position in ERII
as of Mar 31, 2026
· filed May 12, 2026
Position Value
$1,364,211
-$142,257 QoQ
Shares Held
135,473
+21.3% QoQ
Ownership
0.263%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
19 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in ERII Over Time
Shares Held
Position Value (USD)
Derivatives in ERII
reported options exposure · as of Mar 31, 2026CallValue
$177,232
CallShares
17,600
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 Pollution & Treatment Controls
Industrials · as of Mar 31, 2026JANE STREET GROUP, LLC holds $26,287,761 across 5 Pollution & Treatment Controls names. ERII ranks #2 (5.2% of the industry book) .
All Filings in ERII
Export CSV
23 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $1,364,211 | 135,473 | Shares | Defined | 2026-05-12 | |
| 2026-03-31 | $177,232 | 17,600 | Call | Defined | 2026-05-12 | |
| 2025-12-31 | $1,506,468 | 111,673 | Shares | Defined | 2026-02-12 | |
| 2025-12-31 | $215,840 | 16,000 | Call | Defined | 2026-02-12 | |
| 2025-09-30 | $2,376,360 | 154,109 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $536,184 | 41,955 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $1,944,442 | 122,369 | Shares | Defined | 2025-05-19 | |
| 2024-12-31 | $1,165,415 | 79,280 | Shares | Defined | 2025-02-14 | |
| 2024-09-30 | $540,636 | 31,089 | Shares | Defined | 2024-11-15 | |
| 2024-06-30 | $1,201,455 | 90,403 | Shares | Defined | 2024-08-15 | |
| 2024-03-31 | $307,841 | 19,496 | Shares | Defined | 2024-05-16 | |
| 2023-12-31 | $1,784,147 | 94,700 | Shares | Defined | 2024-02-15 | |
| 2023-09-30 | $545,372 | 25,713 | Shares | Defined | 2023-11-15 | |
| 2023-06-30 | $1,047,202 | 37,467 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $299,073 | 12,975 | Shares | Defined | 2023-05-16 | |
| 2022-03-31 | $445,094 | 22,100 | Call | Defined | 2022-05-17 | |
| 2022-03-31 | $622,124 | 30,890 | Shares | Defined | 2022-05-17 | |
| 2021-12-31 | $586,677 | 27,300 | Call | Defined | 2022-02-15 | |
| 2021-09-30 | $534,743 | 28,100 | Call | Defined | 2021-11-16 | |
| 2021-06-30 | $247,595 | 10,869 | Shares | Defined | 2021-08-16 | |
| 2021-06-30 | $601,392 | 26,400 | Put | Defined | 2021-08-16 | |
| 2020-09-30 | $138,932 | 16,943 | Shares | Defined | 2020-11-17 | |
| 2020-03-31 | $98,572 | 13,249 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||