INGN vs SPY: Correlation
Inogen, Inc (INGN) and SPDR S&P 500 ETF Trust (SPY) show a weak relationship: their 3-year correlation of weekly returns is 0.28.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are INGN and SPY?
Across a 3-year window, the weekly returns of INGN and SPY correlate at 0.28, weak. The relationship has been stable: the 1-year correlation (0.24) sits close to the 3-year figure. Stretching to 5 years gives 0.34, with an annualized covariance of 259.5 %².
SPY is close to the least connected end of INGN's tracked universe, ranking #9 of 13. Their recent paths diverged sharply: over the last 12 months SPY outperformed by 51.1 percentage points (-30.5% for INGN against +20.6% for SPY). Risk is not evenly split, since INGN carries 4.4 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.
INGN vs SPY: side by side
| INGN (Inogen, Inc) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | -30.5% | +20.6% |
| 5-year return | -90.7% | +82.4% |
| Volatility (ann.) | 64.0% | 14.5% |
| Beta vs S&P 500 | 1.24 | 1.00 |
| Max drawdown (3Y) | -57.6% | -18.8% |
| Market cap | $0.1B | – |
| 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 | INGN | SPY |
|---|---|---|
| 2022 | -42.0% | -18.2% |
| 2023 | -72.1% | +26.2% |
| 2024 | +67.0% | +24.9% |
| 2025 | -26.7% | +17.7% |
| 2026 | -18.0% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are INGN and SPY good diversifiers for each other?
Reasonably. At 0.28, INGN and SPY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between INGN and SPY?
As of 2026-08-27, the correlation of weekly returns between INGN and SPY is 0.28 over 3 years, 0.24 over 1 year and 0.34 over 5 years.
Is SPY a good diversifier for INGN?
Reasonably. At 0.28, INGN and SPY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.28 mean?
A reading of 0.28 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
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Related comparisons
Hubs: INGN correlations · SPY correlations
