CTOR vs LUMN: Correlation
Citius Oncology, Inc. (CTOR) and Lumen Technologies, Inc. (LUMN) show a moderate relationship: their 3-year correlation of weekly returns is 0.42.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CTOR and LUMN?
On 3 years of weekly data the CTOR/LUMN correlation comes out at 0.42, moderate. The past 12 months show a weaker link (0.25) than the 3-year average (0.42). The 5-year figure is 0.40, and annualized covariance runs at 7374.7 %².
Few assets follow CTOR as closely as LUMN, which ranks #1 of 21 tracked partners. The last year tells two different stories: LUMN led by 78.7 percentage points, -62.2% for CTOR against +16.5% for LUMN. One caveat on sizing: CTOR is 1.9 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
CTOR vs LUMN: side by side
| CTOR (Citius Oncology, Inc.) | LUMN (Lumen Technologies, Inc.) | |
|---|---|---|
| 1-year return | -62.2% | +16.5% |
| 5-year return | n/a | -44.0% |
| Volatility (ann.) | 182.3% | 95.4% |
| Beta vs S&P 500 | 1.25 | 0.90 |
| Max drawdown (3Y) | -98.8% | -69.7% |
| Market cap | $0.1B | $6.3B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CTOR | LUMN |
|---|---|---|
| 2022 | – | -55.5% |
| 2023 | +7.7% | -64.9% |
| 2024 | -89.5% | +190.2% |
| 2025 | -13.0% | +46.3% |
| 2026 | -21.0% | -21.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CTOR and LUMN good diversifiers for each other?
A fair diversifier. At 0.42, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between CTOR and LUMN?
As of 2026-08-27, the correlation of weekly returns between CTOR and LUMN is 0.42 over 3 years, 0.25 over 1 year and 0.40 over 5 years.
Is LUMN a good diversifier for CTOR?
A fair diversifier. At 0.42, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.42 mean?
On the −1 to +1 scale, 0.42 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/ctor-vs-lumn.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/ctor-vs-lumn/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: CTOR correlations · LUMN correlations
