PairBook
HomeASTH › ASTH vs SPY

ASTH vs SPY: Correlation

Astrana Health Inc. (ASTH) and SPDR S&P 500 ETF Trust (SPY) show a weak relationship: their 3-year correlation of weekly returns is 0.29.

Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology

Correlation (3Y)
0.29
weak
Correlation (1Y)
0.22
last 12 months
Correlation (5Y)
0.32
long-run
Ann. covariance
241.0
%² · weekly, annualized

How correlated are ASTH and SPY?

On 3 years of weekly data the ASTH/SPY correlation comes out at 0.29, weak. The relationship has been stable: the 1-year correlation (0.22) sits close to the 3-year figure. The 5-year figure is 0.32, and annualized covariance runs at 241.0 %².

Within ASTH's tracked universe of 15 assets, SPY comes in at #9 by 3-year correlation. Neither side won the trailing year by much: +23.1% against +20.6%. One caveat on sizing: ASTH is 3.9 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.

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.

ASTH vs SPY: side by side

ASTH (Astrana Health Inc.)SPY (SPDR S&P 500 ETF Trust)
1-year return+23.1%+20.6%
5-year return-46.1%+82.4%
Volatility (ann.)56.8%14.5%
Beta vs S&P 5001.151.00
Max drawdown (3Y)-71.0%-18.8%
Market cap$1.9B
P/E (trailing)47.4
Dividend yield0.00%1.01%
Expense ratio0.09%
Assets under management$795.3B
Sector / categoryUS ListedETF · US Large Cap
Higher yield: SPY 1.01% vs 0.00%Smaller drawdown: SPY -18.8% vs -71.0%Higher 5y return: SPY +82.4% vs -46.1%

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.

-37%0%+66%2025-09-052026-08-27
Both assets over the last year, indexed to 100 at the starting week. ASTH · SPY

Year-by-year returns

YearASTHSPY
2022-59.7%-18.2%
2023+29.4%+26.2%
2024-17.7%+24.9%
2025-21.3%+17.7%
2026+54.8%+13.7%

Calendar-year price returns; the current year is year-to-date as of the data date above.

Are ASTH and SPY good diversifiers for each other?

A fair diversifier. At 0.29, enough of each asset's movement is its own that the pair has smoothed outcomes historically.

FAQ

What is the correlation between ASTH and SPY?

Using weekly returns as of 2026-08-27: 0.29 over 3 years, with 0.22 over the last year and 0.32 over 5 years.

Is SPY a good diversifier for ASTH?

A fair diversifier. At 0.29, enough of each asset's movement is its own that the pair has smoothed outcomes historically.

What does a correlation of 0.29 mean?

A reading of 0.29 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.

Use this data

JSON API · no key required
$ curl https://www.pairbook.io/api/v1/pairs/asth-vs-spy.json

ASTH vs SPY: 3-year weekly correlation 0.29ASTH vs SPY0.29

Embed this badge (it refreshes with the data), with attribution:

[![ASTH vs SPY correlation](https://www.pairbook.io/api/v1/badge/asth-vs-spy.svg)](https://www.pairbook.io/pair/asth-vs-spy/)

Free with attribution; caching and terms are described in the API documentation.

Related comparisons

Hubs: ASTH correlations · SPY correlations