IDT vs SRRK: Correlation
IDT Corporation (IDT) and Scholar Rock Holding Corporation (SRRK) show a moderate relationship: their 3-year correlation of weekly returns is 0.43.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are IDT and SRRK?
Across a 3-year window, the weekly returns of IDT and SRRK correlate at 0.43, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.00 versus 0.43 over 3 years. Stretching to 5 years gives 0.35, with an annualized covariance of 2377.1 %².
Within IDT's tracked universe of 14 assets, SRRK comes in at #4 by 3-year correlation. The last year tells two different stories: SRRK led by 62.8 percentage points, +9.1% for IDT against +71.9% for SRRK. One caveat on sizing: SRRK is 4.8 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.
IDT vs SRRK: side by side
| IDT (IDT Corporation) | SRRK (Scholar Rock Holding Corporation) | |
|---|---|---|
| 1-year return | +9.1% | +71.9% |
| 5-year return | +58.8% | +54.0% |
| Volatility (ann.) | 34.0% | 164.2% |
| Beta vs S&P 500 | 0.70 | 1.48 |
| Max drawdown (3Y) | -33.2% | -65.2% |
| Market cap | – | $7.2B |
| P/E (trailing) | 21.2 | – |
| Dividend yield | 0.36% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | IDT | SRRK |
|---|---|---|
| 2022 | -36.2% | -63.6% |
| 2023 | +21.0% | +107.7% |
| 2024 | +40.1% | +129.9% |
| 2025 | +8.2% | +1.9% |
| 2026 | +34.8% | +34.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are IDT and SRRK good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.43 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between IDT and SRRK?
As of 2026-08-27, the correlation of weekly returns between IDT and SRRK is 0.43 over 3 years, 0.00 over 1 year and 0.35 over 5 years.
Is SRRK a good diversifier for IDT?
Yes, to a useful degree: a correlation of 0.43 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.43 mean?
A reading of 0.43 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/idt-vs-srrk.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/idt-vs-srrk/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: IDT correlations · SRRK correlations
