Ownership history in RENAISSANCE TECHNOLOGIES LLC · 34 quarters on record
This page tracks every 13F SEC filing in which RENAISSANCE TECHNOLOGIES LLC reported a position in ARCH COAL INC COM (ACI). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.
| Quarter | Action | Shares | Change | Chg % | % of Fund | Mkt Value | Price (EOQ) |
|---|---|---|---|---|---|---|---|
| 2025 Q3 | ADDED | 1,027,080 | +262,845 | +34.4% | 0.02% | $18.0M | $17.22 |
| 2025 Q2 | ADDED | 764,235 | +643,435 | +532.6% | 0.02% | $16.4M | $21.00 |
| 2025 Q1 | REDUCED | 120,800 | -172,000 | -58.7% | 0.00% | $2.7M | $21.33 |
| 2024 Q4 | REDUCED | 292,800 | -809,634 | -73.4% | 0.01% | $5.8M | $18.90 |
| 2024 Q3 | ADDED | 1,102,434 | +863,234 | +360.9% | 0.03% | $20.4M | $17.67 |
| 2024 Q2 | REDUCED | 239,200 | -123,405 | -34.0% | 0.01% | $4.7M | $18.77 |
| 2024 Q1 | REDUCED | 362,605 | -1,085,108 | -75.0% | 0.01% | $7.8M | $20.26 |
| 2023 Q4 | REDUCED | 1,447,713 | -1,069,892 | -42.5% | 0.05% | $33.3M | $21.61 |
| 2023 Q3 | REDUCED | 2,517,605 | -1,626,200 | -39.2% | 0.10% | $57.3M | $21.26 |
| 2023 Q2 | REDUCED | 4,143,805 | -158,917 | -3.7% | 0.13% | $90.4M | $20.28 |
As of 2025 Q4 — sorted by position size