TIL vs WOOF: Correlation
Instil Bio, Inc. (TIL) and Petco Health and Wellness Company, Inc. (WOOF) show a moderate relationship: their 3-year correlation of weekly returns is 0.39.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are TIL and WOOF?
Across a 3-year window, the weekly returns of TIL and WOOF correlate at 0.39, moderate. The link has loosened recently: the 1-year correlation (-0.04) runs below the 3-year figure (0.39). Stretching to 5 years gives 0.37, with an annualized covariance of 9797.7 %².
By 3-year correlation, WOOF places #10 of the 19 assets tracked against TIL. Their recent paths diverged sharply: over the last 12 months WOOF outperformed by 56.6 percentage points (-71.9% for TIL against -15.3% for WOOF). Risk is not evenly split, since TIL carries 3.5 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.
TIL vs WOOF: side by side
| TIL (Instil Bio, Inc.) | WOOF (Petco Health and Wellness Company, Inc.) | |
|---|---|---|
| 1-year return | -71.9% | -15.3% |
| 5-year return | -97.9% | -87.2% |
| Volatility (ann.) | 296.1% | 84.1% |
| Beta vs S&P 500 | 3.91 | 1.55 |
| Max drawdown (3Y) | -92.1% | -72.3% |
| Market cap | $0.1B | $0.8B |
| P/E (trailing) | – | 135.5 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | TIL | WOOF |
|---|---|---|
| 2022 | -96.3% | -52.1% |
| 2023 | -39.5% | -66.7% |
| 2024 | +150.5% | +20.6% |
| 2025 | -42.4% | -26.2% |
| 2026 | -28.5% | -3.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are TIL and WOOF good diversifiers for each other?
Reasonably. At 0.39, TIL and WOOF keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between TIL and WOOF?
The TIL/WOOF correlation stands at 0.39 on a 3-year window (1 year: -0.04, 5 years: 0.37), computed from weekly returns as of 2026-08-27.
Is WOOF a good diversifier for TIL?
Reasonably. At 0.39, TIL and WOOF keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.39 mean?
A reading of 0.39 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/til-vs-woof.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/til-vs-woof/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: TIL correlations · WOOF correlations
