PBM vs QTI: Correlation
Measured on weekly returns over the past three years, Psyence Biomedical Ltd. (PBM) and QT Imaging Holdings, Inc. (QTI) carry a correlation of -0.23, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PBM and QTI?
On 3 years of weekly data the PBM/QTI correlation comes out at -0.23, negative, meaning they tend to move in opposite directions. Lately the two have moved closer together, with the 1-year correlation at 0.07 versus -0.23 over 3 years. The 5-year figure is -0.23, and annualized covariance runs at -6432.1 %².
QTI is close to the least connected end of PBM's tracked universe, ranking #11 of 12. Twelve-month performance is nearly a tie, at -96.5% for PBM and -91.6% for QTI. Risk is not evenly split, since PBM carries 2.4 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.
PBM vs QTI: side by side
| PBM (Psyence Biomedical Ltd.) | QTI (QT Imaging Holdings, Inc.) | |
|---|---|---|
| 1-year return | -96.5% | -91.6% |
| 5-year return | -100.0% | -97.9% |
| Volatility (ann.) | 254.5% | 108.2% |
| Beta vs S&P 500 | 3.60 | 0.12 |
| Max drawdown (3Y) | -100.0% | -98.6% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | PBM | QTI |
|---|---|---|
| 2022 | +3.7% | +3.1% |
| 2023 | -10.1% | +7.7% |
| 2024 | -99.7% | -95.6% |
| 2025 | -95.5% | -16.7% |
| 2026 | -85.3% | -48.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PBM and QTI good diversifiers for each other?
Yes: at -0.23, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between PBM and QTI?
The PBM/QTI correlation stands at -0.23 on a 3-year window (1 year: 0.07, 5 years: -0.23), computed from weekly returns as of 2026-08-27.
Is QTI a good diversifier for PBM?
Yes: at -0.23, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.23 mean?
On the −1 to +1 scale, -0.23 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/pbm-vs-qti.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/pbm-vs-qti/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: PBM correlations · QTI correlations
