PDFS vs TWIN: Correlation
PDF Solutions, Inc. (PDFS) and Twin Disc, Incorporated (TWIN) show a moderate relationship: their 3-year correlation of weekly returns is 0.48.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PDFS and TWIN?
On 3 years of weekly data the PDFS/TWIN correlation comes out at 0.48, moderate. The relationship has been stable: the 1-year correlation (0.48) sits close to the 3-year figure. The 5-year figure is 0.30, and annualized covariance runs at 1153.0 %².
By 3-year correlation, TWIN places #10 of the 16 assets tracked against PDFS. Their recent paths diverged sharply: over the last 12 months PDFS outperformed by 47.4 percentage points (+133.6% for PDFS against +86.2% for TWIN).
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.
PDFS vs TWIN: side by side
| PDFS (PDF Solutions, Inc.) | TWIN (Twin Disc, Incorporated) | |
|---|---|---|
| 1-year return | +133.6% | +86.2% |
| 5-year return | +105.9% | +98.7% |
| Volatility (ann.) | 47.4% | 50.6% |
| Beta vs S&P 500 | 1.55 | 0.83 |
| Max drawdown (3Y) | -58.5% | -64.4% |
| Market cap | $1.9B | $0.3B |
| P/E (trailing) | 177.5 | 12.6 |
| Dividend yield | 0.00% | 0.68% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | PDFS | TWIN |
|---|---|---|
| 2022 | -10.3% | -11.3% |
| 2023 | +12.7% | +66.7% |
| 2024 | -15.7% | -26.4% |
| 2025 | +5.4% | +44.4% |
| 2026 | +61.8% | +41.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PDFS and TWIN good diversifiers for each other?
Reasonably. At 0.48, PDFS and TWIN keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between PDFS and TWIN?
The PDFS/TWIN correlation stands at 0.48 on a 3-year window (1 year: 0.48, 5 years: 0.30), computed from weekly returns as of 2026-08-27.
Is TWIN a good diversifier for PDFS?
Reasonably. At 0.48, PDFS and TWIN keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.48 mean?
A reading of 0.48 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/pdfs-vs-twin.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/pdfs-vs-twin/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: PDFS correlations · TWIN correlations
