ICCC vs PTCT: Correlation
How closely do ImmuCell Corporation (ICCC) and PTC Therapeutics, Inc. (PTCT) trade together? Their weekly returns over three years give a correlation of -0.26, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ICCC and PTCT?
On 3 years of weekly data the ICCC/PTCT correlation comes out at -0.26, negative, meaning they tend to move in opposite directions. Little has changed lately, as the 1-year reading of -0.28 lands near the 3-year figure. The 5-year figure is -0.14, and annualized covariance runs at -623.5 %².
Among the 13 assets we track against ICCC, PTCT sits near the bottom by co-movement, at rank #13. Correlation aside, the last 12 months split them widely, with ICCC ahead by 20.0 points (+64.3% versus +44.3%).
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.
ICCC vs PTCT: side by side
| ICCC (ImmuCell Corporation) | PTCT (PTC Therapeutics, Inc.) | |
|---|---|---|
| 1-year return | +64.3% | +44.3% |
| 5-year return | +10.8% | +70.4% |
| Volatility (ann.) | 45.2% | 52.5% |
| Beta vs S&P 500 | 0.01 | 1.25 |
| Max drawdown (3Y) | -40.0% | -56.8% |
| Market cap | $0.1B | $6.0B |
| P/E (trailing) | 143.1 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ICCC | PTCT |
|---|---|---|
| 2022 | -23.8% | -4.2% |
| 2023 | -16.6% | -27.8% |
| 2024 | +1.2% | +63.8% |
| 2025 | +19.4% | +68.3% |
| 2026 | +62.9% | -5.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ICCC and PTCT good diversifiers for each other?
By historical standards, yes. A correlation of -0.26 means the two rarely move for the same reasons.
FAQ
What is the correlation between ICCC and PTCT?
As of 2026-08-27, the correlation of weekly returns between ICCC and PTCT is -0.26 over 3 years, -0.28 over 1 year and -0.14 over 5 years.
Is PTCT a good diversifier for ICCC?
By historical standards, yes. A correlation of -0.26 means the two rarely move for the same reasons.
What does a correlation of -0.26 mean?
A reading of -0.26 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/iccc-vs-ptct.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/iccc-vs-ptct/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ICCC correlations · PTCT correlations
