When should you add Bitcoin amplification?
I backtested it.
Everyone argues about the cost of capital.
The bigger question is where Bitcoin is trading relative to trend when you add amplification.
Here's the math.
Amplification beats holding Bitcoin if, and only if, Bitcoin's forward return beats your cost of capital.
At 50% amplification and a 13% preferred rate, every $1 of common equity controls $2 of Bitcoin. So:
Equity return = BTC return + (BTC return − 13%)
Amplification multiplies one spread: Bitcoin's forward return minus the cost of capital.
So the real question is "what is Bitcoin likely to return from HERE?"
So I tested it.
I took every day from Aug 2017 to Oct 2025 (2,958 days), added 50% amplification at 13%, held for 12 months, and grouped each day by Bitcoin's premium to its 200-week moving average.
Median 12-month return on common equity:
Below the 200WMA: +218% (beat spot 100% of the time)
0–25% premium: +234% (99%)
25–50%: +253% (85%)
50–100%: +151% (83%)
100–150%: −32% (34%)
150–200%: −40% (37%)
Above 200%: −82% (18%)
Same amplification. Same cost. Opposite outcomes.
Below a 100% premium, amplification nearly doubled the spot return. Above it, the loss was two to three times bigger than just holding Bitcoin.
Now the risk side.
How often did the senior capital grow larger than the entire Bitcoin stack at some point during the year?
Below 25% premium: 0%
25–50%: 1%
50–100%: 11%
Above 150%: 58–67%
Today Bitcoin is $84,175. The 200WMA is $65,837.
That's a +28% premium.
So stress it the way a balance sheet should be stressed: below the 200WMA.
Add 50% amplification today, then Bitcoin breaks:
10% below the 200WMA ($59.3K) → 71% amplification
20% below ($52.7K) → 80%
30% below ($46.1K) → 91%
The deepest close below the 200WMA in this data was −34% (Nov 2022).
Even a 2022-style break keeps senior claims under the Bitcoin. Barely.
And the 200WMA usually keeps rising through bear markets, so stressing against today's level is conservative.
Run the same stress from a 100% premium and a 10% break below trend puts amplification at 111%. Common NAV is gone.
The formula:
Stressed amplification = amplification × (1 + premium) ÷ (1 − break below trend)
At 50% amplification, the breakeven premium is +80% for a 10% break, +60% for a 20% break and +40% for a 30% break.
And there is an honest counterexample.
There were days in May–June 2022 at a ~40% premium.
Amplification peaked right around 100% at the FTX low, and common equity was down ~40% a year later versus ~15% for spot.
That's exactly why the stress test has to go below the 200WMA, not just to it.
So here's the risk calculus.
Amplification isn't a fixed setting. It's a position size on Bitcoin's forward CAGR.
Near trend, the expected spread is wide and the stress cushion is thick. Lean in.
Far above trend, the spread turns negative, and an ordinary pullback to trend pushes senior claims past the stack. Lean out.
Add amplification near the 200WMA.
Reduce it near the peaks.
Stress test both against a break below trend.
Cost of capital is the toll. The premium to trend tells you whether the road ahead is uphill or downhill: