Boyaa (0434.HK) — BTC Stacking Curve
Cumulative holdings, every disclosed buy, share price, and the best-fit saturation curve.
Boyaa holds 4,468 BTC across 15 disclosed purchases. Average cost basis $82,801 per BTC. Last 30 days: 142 BTC. Last 90 days: 267 BTC — 20.77/week. Best fit: Richards (R² 0.99). Curve flattens toward 4,472 BTC, steepest accumulation May 2024.
Transaction history
All BTC transactions, most recent first.
| Date | BTC | Spot | USD Cost | Cumulative |
|---|---|---|---|---|
| Sep 21, 2026 | 142 | $86.5K | $12.3M | 4,468 |
| Sep 8, 2026 | 10 | $78.4K | $784.4K | 4,326 |
| Sep 4, 2026 | 105 | $79.7K | $8.4M | 4,316 |
| Aug 20, 2026 | 10 | $73.0K | $730.3K | 4,211 |
| Jun 30, 2026 | 13 | $58.6K | $761.2K | 4,201 |
| Jun 30, 2026 | 95 | $58.6K | $5.6M | 4,188 |
| Mar 31, 2026 | 2 | $68.2K | $136.4K | 4,093 |
| Sep 24, 2025 | 166 | $112.0K | $18.6M | 4,091 |
| Sep 16, 2025 | 255 | $115.4K | $29.4M | 3,925 |
| Sep 4, 2025 | 30 | $111.6K | $3.3M | 3,670 |
| Aug 26, 2025 | 290 | $110.2K | $31.9M | 3,640 |
| Feb 28, 2025 | 76 | $84.8K | $6.4M | 3,350 |
| Dec 31, 2024 | 91 | $92.8K | $8.4M | 3,274 |
| Nov 29, 2024 | 2,083 | $95.6K | $199.2M | 3,183 |
| Jan 26, 2024 | 1,100 | $39.9K | $43.9M | 1,100 |
How to read this chart
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.