POET vs SPY: Correlation
How closely do POET Technologies Inc. (POET) and SPDR S&P 500 ETF Trust (SPY) trade together? Their weekly returns over three years give a correlation of 0.22, which is weak.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are POET and SPY?
Across a 3-year window, the weekly returns of POET and SPY correlate at 0.22, weak. Recent behaviour matches the longer record: 0.22 over 1 year against 0.22 over 3. Stretching to 5 years gives 0.18, with an annualized covariance of 486.8 %².
Among the 12 assets we track against POET, SPY ranks #7 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months POET outperformed by 31.6 percentage points (+52.2% for POET against +20.6% for SPY). Risk is not evenly split, since POET carries 10.4 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.
POET vs SPY: side by side
| POET (POET Technologies Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | +52.2% | +20.6% |
| 5-year return | -3.6% | +82.4% |
| Volatility (ann.) | 150.2% | 14.5% |
| Beta vs S&P 500 | 2.33 | 1.00 |
| Max drawdown (3Y) | -80.1% | -18.8% |
| Market cap | $1.4B | – |
| 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 | POET | SPY |
|---|---|---|
| 2022 | -57.5% | -18.2% |
| 2023 | -68.9% | +26.2% |
| 2024 | +533.0% | +24.9% |
| 2025 | +6.4% | +17.7% |
| 2026 | +29.4% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are POET and SPY good diversifiers for each other?
Reasonably. At 0.22, POET and SPY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between POET and SPY?
Using weekly returns as of 2026-08-27: 0.22 over 3 years, with 0.22 over the last year and 0.18 over 5 years.
Is SPY a good diversifier for POET?
Reasonably. At 0.22, POET and SPY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.22 mean?
On the −1 to +1 scale, 0.22 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: POET correlations · SPY correlations
