Position in RIO
as of Jun 30, 2026
· filed Aug 6, 2026
Position Value
$67,685
+$1,170 QoQ
Shares Held
713
0.0% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#772
of 963 holders
Holding Since
Sep 2020
24 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in RIO Over Time
Shares Held
Position Value (USD)
Position in Other Industrial Metals & Mining
Basic Materials · as of Jun 30, 2026ESSEX INVESTMENT MANAGEMENT CO LLC holds $846,560 across 2 Other Industrial Metals & Mining names. RIO ranks #2 (8.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MP |
MP Materials Corp. / DE
|
13,906 | $778,875 | |
| 2 | RIO |
Rio Tinto PLC
This page
|
713 | $67,685 |
All Filings in RIO
Export CSV
24 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $67,685 | 713 | Shares | Sole | 2026-08-06 | |
| 2026-03-31 | $66,515 | 713 | Shares | Sole | 2026-05-11 | |
| 2025-12-31 | $45,377 | 567 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $37,427 | 567 | Shares | Sole | 2025-11-06 | |
| 2025-06-30 | $33,073 | 567 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $61,101 | 1,017 | Shares | Sole | 2025-05-07 | |
| 2024-12-31 | $85,392 | 1,452 | Shares | Sole | 2025-02-07 | |
| 2024-09-30 | $103,338 | 1,452 | Shares | Sole | 2024-10-10 | |
| 2024-06-30 | $95,730 | 1,452 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $92,550 | 1,452 | Shares | Sole | 2024-05-03 | |
| 2023-12-31 | $108,115 | 1,452 | Shares | Sole | 2024-02-08 | |
| 2023-09-30 | $92,405 | 1,452 | Shares | Sole | 2023-11-09 | |
| 2023-06-30 | $92,695 | 1,452 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $110,720 | 1,614 | Shares | Sole | 2023-05-04 | |
| 2022-12-31 | $114,916 | 1,614 | Shares | Sole | 2023-02-03 | |
| 2022-09-30 | $60,786 | 1,104 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $72,956 | 1,196 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $99,776 | 1,241 | Shares | Sole | 2022-05-09 | |
| 2021-12-31 | $83,072 | 1,241 | Shares | Sole | 2022-02-10 | |
| 2021-09-30 | $86,732 | 1,298 | Shares | Sole | 2021-11-09 | |
| 2021-06-30 | $96,641 | 1,152 | Shares | Sole | 2021-08-12 | |
| 2021-03-31 | $89,452 | 1,152 | Shares | Sole | 2021-05-12 | |
| 2020-12-31 | $88,308 | 1,174 | Shares | Sole | 2021-02-12 | |
| 2020-09-30 | $537,410 | 8,899 | Shares | Sole | 2020-11-12 | |
| No filing history on record for this holder in this stock. | ||||||