Cumulative holdings, every disclosed buy, share price, and the best-fit saturation curve.
BTCS S.A. holds 199.16 BTC across 4 disclosed purchases. Average cost basis $98,413 per BTC. Last 30 days: 0 BTC. Last 90 days: 62.48 BTC — 4.86/week. Best fit: Richards (R² 0.91). Curve flattens toward 203.14 BTC, steepest accumulation Sep 2025.
All BTC transactions, most recent first.
| Date | BTC | Spot | USD Cost | Cumulative |
|---|---|---|---|---|
| Mar 31, 2026 | 62.48 | $66.7K | $4.2M | 199.16 |
| Dec 15, 2025 | 1.68 | $89.5K | $150.7K | 136.68 |
| Sep 29, 2025 | 115 | $112.5K | $12.9M | 135 |
| Sep 26, 2025 | 20 | $117.2K | $2.3M | 20 |
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.