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BMN vs FEMY: Correlation

How closely do BlackRock 2037 Municipal Target Term Trust (BMN) and Femasys Inc. (FEMY) trade together? Their weekly returns over three years give a correlation of -0.24, which is negative.

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

Correlation (3Y)
-0.24
negative
Correlation (1Y)
-0.09
last 12 months
Correlation (5Y)
-0.22
long-run
Ann. covariance
-1172.0
%² · weekly, annualized

How correlated are BMN and FEMY?

On 3 years of weekly data the BMN/FEMY correlation comes out at -0.24, negative, meaning they tend to move in opposite directions. The link has tightened recently: the 1-year correlation (-0.09) runs above the 3-year figure (-0.24). The 5-year figure is -0.22, and annualized covariance runs at -1172.0 %².

Out of 10 assets tracked against BMN, FEMY lands near the bottom at #8. Their recent paths diverged sharply: over the last 12 months BMN outperformed by 72.1 percentage points (+10.9% for BMN against -61.2% for FEMY). Risk is not evenly split, since FEMY carries 54.2 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.

BMN vs FEMY: side by side

BMN (BlackRock 2037 Municipal Target Term Trust)FEMY (Femasys Inc.)
1-year return+10.9%-61.2%
5-year returnn/a-98.0%
Volatility (ann.)9.4%509.3%
Beta vs S&P 5000.18-0.49
Max drawdown (3Y)-9.3%-97.2%
Market cap$0.2B
P/E (trailing)22.7
Dividend yield0.00%0.00%
Sector / categoryUS ListedUS Listed
Smaller drawdown: BMN -9.3% vs -97.2%
-70%0%+177%2025-09-052026-08-27
Both assets over the last year, indexed to 100 at the starting week. BMN · FEMY

Year-by-year returns

YearBMNFEMY
2022-76.9%
2023+1.9%+8.3%
2024+12.7%+12.8%
2025+5.5%-47.6%
2026+4.2%-75.8%

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

Are BMN and FEMY good diversifiers for each other?

Yes. With a correlation of -0.24, BMN and FEMY have moved largely independently, which makes them a genuinely diversifying pair by historical standards.

FAQ

What is the correlation between BMN and FEMY?

Using weekly returns as of 2026-08-27: -0.24 over 3 years, with -0.09 over the last year and -0.22 over 5 years.

Is FEMY a good diversifier for BMN?

Yes. With a correlation of -0.24, BMN and FEMY have moved largely independently, which makes them a genuinely diversifying pair by historical standards.

What does a correlation of -0.24 mean?

On the −1 to +1 scale, -0.24 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.

Use this data

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$ curl https://www.pairbook.io/api/v1/pairs/bmn-vs-femy.json

BMN vs FEMY: 3-year weekly correlation -0.24BMN vs FEMY-0.24

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Hubs: BMN correlations · FEMY correlations