RTB vs TLPH: Correlation
How closely do RTB Digital, Inc. (RTB) and Talphera, Inc. (TLPH) trade together? Their weekly returns over three years give a correlation of 0.44, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are RTB and TLPH?
On 3 years of weekly data the RTB/TLPH correlation comes out at 0.44, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.33 versus 0.44 over 3 years. The 5-year figure is 0.35, and annualized covariance runs at 5922.6 %².
In RTB's tracked universe of 13 assets, TLPH sits right near the top at #3. The last year tells two different stories: TLPH led by 112.3 percentage points, +15.5% for RTB against +127.8% for TLPH. Risk is not evenly split, since RTB carries 1.7 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.
RTB vs TLPH: side by side
| RTB (RTB Digital, Inc.) | TLPH (Talphera, Inc.) | |
|---|---|---|
| 1-year return | +15.5% | +127.8% |
| 5-year return | -99.6% | -94.6% |
| Volatility (ann.) | 150.2% | 88.9% |
| Beta vs S&P 500 | 2.93 | 1.27 |
| Max drawdown (3Y) | -99.2% | -73.5% |
| Market cap | $0.2B | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | RTB | TLPH |
|---|---|---|
| 2022 | -89.0% | -79.8% |
| 2023 | -9.6% | -67.3% |
| 2024 | -68.8% | -29.7% |
| 2025 | -87.7% | +119.2% |
| 2026 | +131.1% | +7.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are RTB and TLPH good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.44 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between RTB and TLPH?
Using weekly returns as of 2026-08-27: 0.44 over 3 years, with 0.33 over the last year and 0.35 over 5 years.
Is TLPH a good diversifier for RTB?
Yes, to a useful degree: a correlation of 0.44 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.44 mean?
A reading of 0.44 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/rtb-vs-tlph.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/rtb-vs-tlph/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: RTB correlations · TLPH correlations
