Cumulative holdings, every disclosed buy, share price, and the best-fit saturation curve.
Coinsilium holds 181.96 BTC across 13 disclosed purchases. Average cost basis $106,981 per BTC. Last 30 days: 0 BTC. Last 90 days: 0 BTC — 0/week. Best fit: Richards (R² 0.39). Curve flattens toward 1,255 BTC, steepest accumulation Aug 2026.
All BTC transactions, most recent first.
| Date | BTC | Spot | USD Cost | Cumulative |
|---|---|---|---|---|
| Aug 4, 2025 | 57.54 | $114.2K | $6.6M | 181.96 |
| Jul 28, 2025 | 12.42 | $119.4K | $1.5M | 124.42 |
| Jul 18, 2025 | 10.25 | $119.3K | $1.2M | 112 |
| Jul 14, 2025 | 13.12 | $119.2K | $1.6M | 101.75 |
| Jul 7, 2025 | 14.9 | $109.2K | $1.6M | 88.63 |
| Jun 30, 2025 | 15.41 | $108.4K | $1.7M | 73.73 |
| Jun 25, 2025 | 15.21 | $106.0K | $1.6M | 58.32 |
| Jun 20, 2025 | 10.22 | $104.7K | $1.1M | 43.11 |
| Jun 18, 2025 | 7.65 | $104.6K | $800.9K | 32.89 |
| Jun 16, 2025 | 6.56 | $105.5K | $691.8K | 25.24 |
| Jun 11, 2025 | 5.04 | $110.2K | $555.8K | 18.68 |
| Jun 6, 2025 | 0.39 | $101.6K | $39.6K | 13.64 |
| Sep 6, 2024 | 13.25 | $42.2K | $559.1K | 13.25 |
Cumulative BTC held — the staircase. Each step is a disclosed purchase; the step height is the size of the buy.
Purchase bubbles — one per buy. Bubble size is the BTC count; vertical position is the per-BTC cost basis. Small-and-high is a small buy at a high price; big-and-low is a big buy made cheap.
Share price — the secondary line on the right axis. Did the company stack faster when its equity ran hot?
Regression fit — the best of a Richards and a Gompertz saturation curve, chosen by log-R². It has to flatten: there are only 21 million Bitcoin.
Controls — Linear/Log switches the BTC axis. Play animates the curve forward through disclosure time. ‹ › steps through the cohort by holdings.