Cumulative holdings, every disclosed buy, share price, and the best-fit saturation curve.
Vaultz holds 135 BTC across 5 disclosed purchases. Average cost basis $75,359 per BTC. Last 30 days: 0 BTC. Last 90 days: 0 BTC — 0/week. Best fit: Richards (R² 0.90). Curve flattens toward 135.14 BTC, steepest accumulation Jul 2025.
All BTC transactions, most recent first.
| Date | BTC | Spot | USD Cost | Cumulative |
|---|---|---|---|---|
| Aug 13, 2025 | 17.15 | $89.1K | $1.5M | 135 |
| Aug 6, 2025 | 47.85 | $88.3K | $4.2M | 117.85 |
| Jul 21, 2025 | 20 | $25.4K | $507.8K | 70 |
| Jun 30, 2025 | 40 | $78.6K | $3.1M | 50 |
| Jun 24, 2025 | 10 | $76.9K | $768.5K | 10 |
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.