KTTA vs SPY: Correlation
How closely do Pasithea Therapeutics Corp. (KTTA) and SPDR S&P 500 ETF Trust (SPY) trade together? Their weekly returns over three years give a correlation of 0.19, which is weak.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are KTTA and SPY?
Over the past 3 years, KTTA and SPY moved with a correlation of 0.19, which is weak. The link has tightened recently: the 1-year correlation (0.32) runs above the 3-year figure (0.19). Over 5 years the correlation is 0.14, and the annualized covariance of weekly returns is 687.8 %².
SPY is close to the least connected end of KTTA's tracked universe, ranking #7 of 10. Correlation aside, the last 12 months split them widely, with SPY ahead by 47.0 points (-26.4% versus +20.6%). Risk is not evenly split, since KTTA carries 17.1 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.
KTTA vs SPY: side by side
| KTTA (Pasithea Therapeutics Corp.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | -26.4% | +20.6% |
| 5-year return | -99.2% | +82.4% |
| Volatility (ann.) | 248.1% | 14.5% |
| Beta vs S&P 500 | 3.29 | 1.00 |
| Max drawdown (3Y) | -97.6% | -18.8% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 1.01% |
| Expense ratio | – | 0.09% |
| Assets under management | – | $795.3B |
| Sector / category | US Listed | ETF · US Large Cap |
SPY is a Large Blend fund from State Street Investment Management: $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | KTTA | SPY |
|---|---|---|
| 2022 | -63.7% | -18.2% |
| 2023 | -42.4% | +26.2% |
| 2024 | -57.4% | +24.9% |
| 2025 | -59.0% | +17.7% |
| 2026 | -57.0% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are KTTA and SPY good diversifiers for each other?
Yes: at 0.19, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between KTTA and SPY?
Using weekly returns as of 2026-08-27: 0.19 over 3 years, with 0.32 over the last year and 0.14 over 5 years.
Is SPY a good diversifier for KTTA?
Yes: at 0.19, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of 0.19 mean?
On the −1 to +1 scale, 0.19 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.
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Related comparisons
Hubs: KTTA correlations · SPY correlations
