FULC vs TIL: Correlation
Fulcrum Therapeutics, Inc. (FULC) and Instil Bio, Inc. (TIL) show a negative relationship: their 3-year correlation of weekly returns is -0.33.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FULC and TIL?
Over the past 3 years, FULC and TIL moved with a correlation of -0.33, which is negative, meaning they tend to move in opposite directions. Lately the two have moved closer together, with the 1-year correlation at 0.14 versus -0.33 over 3 years. Over 5 years the correlation is -0.19, and the annualized covariance of weekly returns is -8958.7 %².
Among the 11 assets we track against FULC, TIL sits near the bottom by co-movement, at rank #11. Their recent paths diverged sharply: over the last 12 months FULC outperformed by 30.0 percentage points (-41.9% for FULC against -71.9% for TIL). Note the risk asymmetry: TIL runs 3.2 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
FULC vs TIL: side by side
| FULC (Fulcrum Therapeutics, Inc.) | TIL (Instil Bio, Inc.) | |
|---|---|---|
| 1-year return | -41.9% | -71.9% |
| 5-year return | -86.0% | -97.9% |
| Volatility (ann.) | 92.9% | 296.1% |
| Beta vs S&P 500 | 1.49 | 3.91 |
| Max drawdown (3Y) | -79.1% | -92.1% |
| Market cap | $0.3B | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | FULC | TIL |
|---|---|---|
| 2022 | -58.8% | -96.3% |
| 2023 | -7.3% | -39.5% |
| 2024 | -30.4% | +150.5% |
| 2025 | +140.6% | -42.4% |
| 2026 | -66.0% | -28.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FULC and TIL good diversifiers for each other?
Yes: at -0.33, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between FULC and TIL?
Using weekly returns as of 2026-08-27: -0.33 over 3 years, with 0.14 over the last year and -0.19 over 5 years.
Is TIL a good diversifier for FULC?
Yes: at -0.33, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.33 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/fulc-vs-til.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/fulc-vs-til/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: FULC correlations · TIL correlations
