PairBook
HomePWCM › PWCM vs SPY

PWCM vs SPY: Correlation

How closely do PowerCompute, Inc. (PWCM) and SPDR S&P 500 ETF Trust (SPY) trade together? Their weekly returns over three years give a correlation of 0.27, which is weak.

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

Correlation (3Y)
0.27
weak
Correlation (1Y)
0.23
last 12 months
Correlation (5Y)
0.29
long-run
Ann. covariance
449.6
%² · weekly, annualized

How correlated are PWCM and SPY?

On 3 years of weekly data the PWCM/SPY correlation comes out at 0.27, weak. Recent behaviour matches the longer record: 0.23 over 1 year against 0.27 over 3. The 5-year figure is 0.29, and annualized covariance runs at 449.6 %².

Among the 16 assets we track against PWCM, SPY ranks #11 by 3-year correlation. Correlation aside, the last 12 months split them widely, with SPY ahead by 116.7 points (-96.1% versus +20.6%). One caveat on sizing: PWCM is 8.0 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.

PWCM vs SPY: side by side

PWCM (PowerCompute, Inc.)SPY (SPDR S&P 500 ETF Trust)
1-year return-96.1%+20.6%
5-year return-99.8%+82.4%
Volatility (ann.)115.8%14.5%
Beta vs S&P 5002.151.00
Max drawdown (3Y)-99.3%-18.8%
Market cap
P/E (trailing)0.0
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 -99.3%Higher 5y return: SPY +82.4% vs -99.8%

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.

-96%0%+21%2025-09-052026-08-27
Both assets over the last year, indexed to 100 at the starting week. PWCM · SPY

Year-by-year returns

YearPWCMSPY
2022-88.6%-18.2%
2023+11.8%+26.2%
2024-41.9%+24.9%
2025-79.3%+17.7%
2026-88.9%+13.7%

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

Are PWCM and SPY good diversifiers for each other?

A fair diversifier. At 0.27, enough of each asset's movement is its own that the pair has smoothed outcomes historically.

FAQ

What is the correlation between PWCM and SPY?

The PWCM/SPY correlation stands at 0.27 on a 3-year window (1 year: 0.23, 5 years: 0.29), computed from weekly returns as of 2026-08-27.

Is SPY a good diversifier for PWCM?

A fair diversifier. At 0.27, enough of each asset's movement is its own that the pair has smoothed outcomes historically.

What does a correlation of 0.27 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/pwcm-vs-spy.json

PWCM vs SPY: 3-year weekly correlation 0.27PWCM vs SPY0.27

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

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

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

Related comparisons

Hubs: PWCM correlations · SPY correlations