ACAD vs CCCC: Correlation
How closely do ACADIA Pharmaceuticals Inc. (ACAD) and C4 Therapeutics, Inc. (CCCC) trade together? Their weekly returns over three years give a correlation of 0.50, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACAD and CCCC?
Across a 3-year window, the weekly returns of ACAD and CCCC correlate at 0.50, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.39 versus 0.50 over 3 years. Stretching to 5 years gives 0.37, with an annualized covariance of 4521.2 %².
Few assets follow ACAD as closely as CCCC, which ranks #1 of 15 tracked partners. Correlation aside, the last 12 months split them widely, with CCCC ahead by 47.0 points (+11.9% versus +58.9%). Risk is not evenly split, since CCCC carries 3.8 times the volatility of the other side.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
ACAD vs CCCC: side by side
| ACAD (ACADIA Pharmaceuticals Inc.) | CCCC (C4 Therapeutics, Inc.) | |
|---|---|---|
| 1-year return | +11.9% | +58.9% |
| 5-year return | +75.2% | -90.1% |
| Volatility (ann.) | 48.8% | 184.7% |
| Beta vs S&P 500 | 1.18 | 3.22 |
| Max drawdown (3Y) | -55.6% | -90.0% |
| Market cap | $5.1B | $0.5B |
| P/E (trailing) | 13.3 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ACAD | CCCC |
|---|---|---|
| 2022 | -31.8% | -81.7% |
| 2023 | +96.7% | -4.2% |
| 2024 | -41.4% | -36.3% |
| 2025 | +45.6% | -46.9% |
| 2026 | +11.3% | +114.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACAD and CCCC good diversifiers for each other?
To a limited degree. At 0.50 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between ACAD and CCCC?
The ACAD/CCCC correlation stands at 0.50 on a 3-year window (1 year: 0.39, 5 years: 0.37), computed from weekly returns as of 2026-08-27.
Is CCCC a good diversifier for ACAD?
To a limited degree. At 0.50 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.50 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/acad-vs-cccc.json
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[](https://www.pairbook.io/pair/acad-vs-cccc/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ACAD correlations · CCCC correlations
