Cumulative holdings, every disclosed buy, share price, and the best-fit saturation curve.
Stack BTC Plc holds 68 BTC across 1 disclosed purchase. Average cost basis $52,513 per BTC. Last 30 days: 0 BTC. Last 90 days: 68 BTC — 5.29/week. Too few disclosures to fit a saturation curve.
All BTC transactions, most recent first.
| Date | BTC | Spot | USD Cost | Cumulative |
|---|---|---|---|---|
| Mar 30, 2026 | 68 | $52.5K | $3.6M | 68 |
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.