BCTX vs CMCSA: Correlation
BriaCell Therapeutics Corp. (BCTX) and Comcast (CMCSA) show a negative relationship: their 3-year correlation of weekly returns is -0.22.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BCTX and CMCSA?
Over the past 3 years, BCTX and CMCSA moved with a correlation of -0.22, which is negative, meaning they tend to move in opposite directions. The past 12 months show a tighter link (0.10) than the 3-year average (-0.22). Over 5 years the correlation is -0.15, and the annualized covariance of weekly returns is -3608.4 %².
Among the 31 assets we track against BCTX, CMCSA ranks #16 by 3-year correlation. Correlation aside, the last 12 months split them widely, with CMCSA ahead by 38.6 points (-51.2% versus -12.6%). Note the risk asymmetry: BCTX runs 28.4 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
BCTX vs CMCSA: side by side
| BCTX (BriaCell Therapeutics Corp.) | CMCSA (Comcast) | |
|---|---|---|
| 1-year return | -51.2% | -12.6% |
| 5-year return | -94.5% | -44.5% |
| Volatility (ann.) | 676.8% | 23.8% |
| Beta vs S&P 500 | -1.17 | 0.48 |
| Max drawdown (3Y) | -96.3% | -44.9% |
| Market cap | – | $93.7B |
| P/E (trailing) | – | 8.7 |
| Dividend yield | 0.00% | 4.85% |
| Sector / category | US Listed | Communication Services |
Year-by-year returns
| Year | BCTX | CMCSA |
|---|---|---|
| 2022 | -47.2% | -28.7% |
| 2023 | +33.9% | +29.1% |
| 2024 | -90.4% | -11.8% |
| 2025 | +27.0% | -17.3% |
| 2026 | -47.8% | -2.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BCTX and CMCSA good diversifiers for each other?
Yes: at -0.22, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between BCTX and CMCSA?
The BCTX/CMCSA correlation stands at -0.22 on a 3-year window (1 year: 0.10, 5 years: -0.15), computed from weekly returns as of 2026-08-27.
Is CMCSA a good diversifier for BCTX?
Yes: at -0.22, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.22 mean?
A reading of -0.22 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/bctx-vs-cmcsa.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/bctx-vs-cmcsa/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BCTX correlations · CMCSA correlations
