PairBook
HomeOPRX › OPRX vs SPY

OPRX vs SPY: Correlation

OptimizeRx Corporation (OPRX) and SPDR S&P 500 ETF Trust (SPY) show a moderate relationship: their 3-year correlation of weekly returns is 0.37.

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

Correlation (3Y)
0.37
moderate
Correlation (1Y)
0.40
last 12 months
Correlation (5Y)
0.39
long-run
Ann. covariance
442.1
%² · weekly, annualized

How correlated are OPRX and SPY?

On 3 years of weekly data the OPRX/SPY correlation comes out at 0.37, moderate. Little has changed lately, as the 1-year reading of 0.40 lands near the 3-year figure. The 5-year figure is 0.39, and annualized covariance runs at 442.1 %².

Among the 12 assets we track against OPRX, SPY sits near the bottom by co-movement, at rank #8. Correlation aside, the last 12 months split them widely, with SPY ahead by 75.9 points (-55.3% versus +20.6%). Risk is not evenly split, since OPRX carries 5.8 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.

OPRX vs SPY: side by side

OPRX (OptimizeRx Corporation)SPY (SPDR S&P 500 ETF Trust)
1-year return-55.3%+20.6%
5-year return-88.3%+82.4%
Volatility (ann.)83.6%14.5%
Beta vs S&P 5002.121.00
Max drawdown (3Y)-79.1%-18.8%
Market cap$0.1B
P/E (trailing)31.3
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 -79.1%Higher 5y return: SPY +82.4% vs -88.3%

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.

-74%0%+21%2025-09-052026-08-27
Both assets over the last year, indexed to 100 at the starting week. OPRX · SPY

Year-by-year returns

YearOPRXSPY
2022-73.0%-18.2%
2023-14.8%+26.2%
2024-66.0%+24.9%
2025+152.3%+17.7%
2026-36.1%+13.7%

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

Are OPRX and SPY good diversifiers for each other?

A fair diversifier. At 0.37, enough of each asset's movement is its own that the pair has smoothed outcomes historically.

FAQ

What is the correlation between OPRX and SPY?

Using weekly returns as of 2026-08-27: 0.37 over 3 years, with 0.40 over the last year and 0.39 over 5 years.

Is SPY a good diversifier for OPRX?

A fair diversifier. At 0.37, enough of each asset's movement is its own that the pair has smoothed outcomes historically.

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

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

OPRX vs SPY: 3-year weekly correlation 0.37OPRX vs SPY0.37

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

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

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

Related comparisons

Hubs: OPRX correlations · SPY correlations