PairBook
HomeAIOS › AIOS vs AMS

AIOS vs AMS: Correlation

Measured on weekly returns over the past three years, AIOS Tech Inc. - Class A (AIOS) and American Shared Hospital Services (AMS) carry a correlation of 0.35, a moderate link.

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

Correlation (3Y)
0.35
moderate
Correlation (1Y)
0.44
last 12 months
Correlation (5Y)
0.32
long-run
Ann. covariance
2519.7
%² · weekly, annualized

How correlated are AIOS and AMS?

Over the past 3 years, AIOS and AMS moved with a correlation of 0.35, which is moderate. Recent behaviour matches the longer record: 0.44 over 1 year against 0.35 over 3. Over 5 years the correlation is 0.32, and the annualized covariance of weekly returns is 2519.7 %².

Within AIOS's tracked universe of 14 assets, AMS comes in at #8 by 3-year correlation. The last year tells two different stories: AMS led by 37.9 percentage points, -78.6% for AIOS against -40.7% for AMS. One caveat on sizing: AIOS is 3.3 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.

AIOS vs AMS: side by side

AIOS (AIOS Tech Inc. - Class A)AMS (American Shared Hospital Services)
1-year return-78.6%-40.7%
5-year return-99.1%-45.7%
Volatility (ann.)153.4%46.6%
Beta vs S&P 5001.610.34
Max drawdown (3Y)-98.1%-64.2%
Market cap$0.1B
P/E (trailing)
Dividend yield0.00%0.00%
Sector / categoryUS ListedUS Listed
Smaller drawdown: AMS -64.2% vs -98.1%Higher 5y return: AMS -45.7% vs -99.1%
-88%0%+16%2025-09-052026-08-27
Twelve months of weekly closes, each series rebased to 100. AIOS · AMS

Year-by-year returns

YearAIOSAMS
2022-82.2%+23.6%
2023-29.8%-18.8%
2024+67.7%+34.0%
2025-84.1%-33.9%
2026-21.6%-30.8%

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

Are AIOS and AMS good diversifiers for each other?

Reasonably. At 0.35, AIOS and AMS keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.

FAQ

What is the correlation between AIOS and AMS?

Using weekly returns as of 2026-08-27: 0.35 over 3 years, with 0.44 over the last year and 0.32 over 5 years.

Is AMS a good diversifier for AIOS?

Reasonably. At 0.35, AIOS and AMS keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.

What does a correlation of 0.35 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/aios-vs-ams.json

AIOS vs AMS: 3-year weekly correlation 0.35AIOS vs AMS0.35

Markdown for the live badge, attribution link included:

[![AIOS vs AMS correlation](https://www.pairbook.io/api/v1/badge/aios-vs-ams.svg)](https://www.pairbook.io/pair/aios-vs-ams/)

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

Related comparisons

Hubs: AIOS correlations · AMS correlations