FSP vs SPY: Correlation
Measured on weekly returns over the past three years, Franklin Street Properties Corp. (FSP) and SPDR S&P 500 ETF Trust (SPY) carry a correlation of 0.31, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FSP and SPY?
On 3 years of weekly data the FSP/SPY correlation comes out at 0.31, moderate. The link has loosened recently: the 1-year correlation (0.19) runs below the 3-year figure (0.31). The 5-year figure is 0.27, and annualized covariance runs at 210.3 %².
Among the 10 assets we track against FSP, SPY sits near the bottom by co-movement, at rank #6. Their recent paths diverged sharply: over the last 12 months SPY outperformed by 95.2 percentage points (-74.6% for FSP against +20.6% for SPY). Note the risk asymmetry: FSP 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.
FSP vs SPY: side by side
| FSP (Franklin Street Properties Corp.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | -74.6% | +20.6% |
| 5-year return | -89.6% | +82.4% |
| Volatility (ann.) | 47.1% | 14.5% |
| Beta vs S&P 500 | 1.01 | 1.00 |
| Max drawdown (3Y) | -83.8% | -18.8% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 4.79% | 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 | FSP | SPY |
|---|---|---|
| 2022 | -52.3% | -18.2% |
| 2023 | -4.1% | +26.2% |
| 2024 | -27.0% | +24.9% |
| 2025 | -46.8% | +17.7% |
| 2026 | -56.2% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FSP and SPY good diversifiers for each other?
Reasonably. At 0.31, FSP and SPY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between FSP and SPY?
Using weekly returns as of 2026-08-27: 0.31 over 3 years, with 0.19 over the last year and 0.27 over 5 years.
Is SPY a good diversifier for FSP?
Reasonably. At 0.31, FSP and SPY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.31 mean?
On the −1 to +1 scale, 0.31 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: FSP correlations · SPY correlations
