AMPL vs SPY: Correlation
Measured on weekly returns over the past three years, Amplitude, Inc. (AMPL) and SPDR S&P 500 ETF Trust (SPY) carry a correlation of 0.37, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AMPL and SPY?
Across a 3-year window, the weekly returns of AMPL and SPY correlate at 0.37, moderate. The relationship has been stable: the 1-year correlation (0.30) sits close to the 3-year figure. Stretching to 5 years gives 0.41, with an annualized covariance of 296.7 %².
By 3-year correlation, SPY places #23 of the 29 assets tracked against AMPL. Their 12-month results are close: +24.7% for AMPL against +20.6% for SPY. Risk is not evenly split, since AMPL carries 3.9 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.
AMPL vs SPY: side by side
| AMPL (Amplitude, Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | +24.7% | +20.6% |
| 5-year return | -73.9% | +82.4% |
| Volatility (ann.) | 56.0% | 14.5% |
| Beta vs S&P 500 | 1.42 | 1.00 |
| Max drawdown (3Y) | -61.1% | -18.8% |
| Market cap | $1.9B | – |
| 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 | AMPL | SPY |
|---|---|---|
| 2022 | -77.2% | -18.2% |
| 2023 | +5.3% | +26.2% |
| 2024 | -17.1% | +24.9% |
| 2025 | +9.8% | +17.7% |
| 2026 | +23.3% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AMPL and SPY good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.37 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between AMPL and SPY?
Using weekly returns as of 2026-08-27: 0.37 over 3 years, with 0.30 over the last year and 0.41 over 5 years.
Is SPY a good diversifier for AMPL?
Yes, to a useful degree: a correlation of 0.37 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.37 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/ampl-vs-spy.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/ampl-vs-spy/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: AMPL correlations · SPY correlations
