Cumulative holdings, every disclosed buy, share price, and the best-fit saturation curve.
Mac House holds 125 BTC across 3 disclosed purchases. Average cost basis $106,925 per BTC. Last 30 days: 0 BTC. Last 90 days: 18.35 BTC — 1.43/week. Too few disclosures to fit a saturation curve.
All BTC transactions, most recent first.
| Date | BTC | Spot | USD Cost | Cumulative |
|---|---|---|---|---|
| Apr 30, 2026 | 18.35 | $77.0K | $1.4M | 125 |
| Sep 25, 2025 | 18.17 | $110.0K | $2.0M | 106.65 |
| Sep 17, 2025 | 88.48 | $112.5K | $10.0M | 88.48 |
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.