01/04 Held, against the same position traded Cumulative net yield, BTC+ETH blended, 2024 – 2026 Held, never traded +9.8% 5 round trips a year +6.7% 14 round trips a year +0.6% 26 round trips a year -7.6% 52 round trips a year -25.2% -29% -8% +14% 0y 0.5y 1y 1.5y The whole argument in one image. Holding earns +9.8% over the two years after its one round trip; the identical position traded 14 times a year earns +0.6%, and at 52 round trips it loses 25.2%. Each round trip costs 34 bps of notional and produces nothing.
02/04 The break-even surface Round trips per year × leverage → net APR Leverage tilts the whole surface without moving where it crosses zero: carry and cost are both percentages of the same notional, so the break-even ridge is a straight line at 14.9 round trips a year at every leverage.
03/04 The join audit Why 39.4% of the settlements could not simply be dropped corr BTC -0.60 ETH -0.67 ● BTC quarter □ ETH quarter +0.00 +0.72 +1.43 0% 10% 20% 30% 40% 50% 60% settlements the old join dropped, per quarter → mean funding, bp/8h One point per calendar quarter: how many settlements the old exact-timestamp join discarded, against the mean funding in that quarter. The line slopes down (corr −0.60 on BTC and −0.67 on ETH), so the quarters it dropped most were the ones paying most. On BTC what survived averaged +0.521 bp against +0.366 bp for what it discarded (ETH: +0.528 against +0.377), and every figure computed from the survivors read high. The snapped join used here drops none of the 2,190.
04/04 Funding by year Mean funding, annualised, unlevered +8.18% +9.40% 2024 +5.13% +4.93% 2025 +1.00% +0.35% 2026 to Jun solid BTC · light ETH Every calendar year in the sample, both symbols. The headline +4.88% / +4.91% is the two-year mean; these are the years it is made of, so you can see the shape of it rather than take the average on trust.