Rio Tinto shares owned by William John Sempolinski
Quarter-by-quarter ownership of Rio Tinto (RIO) shares owned by William John Sempolinski
from 13F filings
Historical chart of William John Sempolinski investment in Rio Tinto
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All positions including Rio Tinto held by William John Sempolinski consolidated in one spreadsheet with up to 7 years of data
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Quarterly reported holdings in Rio Tinto by William John Sempolinski
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2026-03-31 | $271k | 2.9k | 93.29 |
| 2025-12-31 | $232k | 2.9k | 80.03 |