Owning ten assets is not the same as making ten bets. Measured over 10,869 hours: correlations rise with volatility, and four crypto positions collapse into 1.12 independent ones exactly when it matters.
A portfolio of ten assets that all move together is one position in ten pieces. The useful question is how many independent bets it contains, and that number is not fixed — it falls as markets get violent, which is precisely when it is supposed to hold.
Apex measured this across 10,869 hours where six instruments all had data, sorting the hours into five groups by how much the market as a whole was moving. The volatility measure uses all six instruments rather than one, so it cannot be circular against the crypto cluster.
| Market condition | Median hourly move | Average correlation | Effective bets (of 6) |
|---|---|---|---|
| Calmest fifth | 0.108 % | +0.121 | 3.74 |
| Second | 0.189 % | +0.183 | 3.13 |
| Middle | 0.280 % | +0.275 | 2.53 |
| Fourth | 0.423 % | +0.361 | 2.14 |
| Most violent fifth | 0.804 % | +0.524 | 1.66 |
The rise is monotonic across all five groups — not a threshold effect that appears in a crisis, but a steady tightening as conditions worsen. Six positions behave like 3.7 in calm markets and like 1.7 in the worst fifth.
Measured on bitcoin, ether, solana and XRP alone, the four positions behave like 2.61 independent bets in the calmest hours and 1.12 in the most violent. In the conditions that decide a year's outcome, four crypto positions are effectively one.
The pairwise numbers say the same thing: BTC–ETH +0.838, BTC–SOL +0.790, BTC–XRP +0.707. And holding bitcoin constant does not separate them — solana and XRP still correlate at +0.506, because they share a common crypto factor rather than following bitcoin. Between 62 % and 77 % of each coin's hourly movement is explained by the other three.
One thing in the set does not join in. Against the dominant macro variable of 2026 — the 10-year real interest rate — gold measures −0.2764, silver −0.1974 and the Nasdaq −0.1647, all with p below 0.00001 across 1,243 days. Brent crude measures +0.0236 with p = 0.41: no response at all.
Energy is priced by physical supply and the politics controlling it, not by discount rates. That is why it is the one genuine diversifier Apex has measured — see oil and interest rates. Adding a second crypto asset adds almost nothing; adding an uncorrelated risk does.
Gold is often held as the counterweight to equity risk, and it does hold up: across 158 stress days gold fell −0.12 % on average. Bitcoin, proposed as its substitute, fell −1.94 % (p < 0.0001), and the bitcoin–gold correlation collapses to +0.01 on exactly those days. The hedge that disappears under stress was not a hedge.
Measured and published in Apex’s own record on the date stated. This describes measured portfolio behaviour under stated conditions; it is not investment advice and promises nothing about the future. Portfolio · Relationships · What moves markets