PairBook
HomeBELFA › BELFA vs FNGD

BELFA vs FNGD: Correlation

Measured on weekly returns over the past three years, Bel Fuse Inc. (BELFA) and MicroSectors FANG Index -3X Inverse Leveraged ETNs due (FNGD) carry a correlation of -0.23, a negative link.

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

Correlation (3Y)
-0.23
negative
Correlation (1Y)
-0.09
last 12 months
Correlation (5Y)
-0.25
long-run
Ann. covariance
-854.4
%² · weekly, annualized

How correlated are BELFA and FNGD?

Across a 3-year window, the weekly returns of BELFA and FNGD correlate at -0.23, negative, meaning they tend to move in opposite directions. Lately the two have moved closer together, with the 1-year correlation at -0.09 versus -0.23 over 3 years. Stretching to 5 years gives -0.25, with an annualized covariance of -854.4 %².

Among the 10 assets we track against BELFA, FNGD sits near the bottom by co-movement, at rank #8. Correlation aside, the last 12 months split them widely, with BELFA ahead by 136.2 points (+80.5% versus -55.7%). Note the risk asymmetry: FNGD runs 1.6 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.

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.

BELFA vs FNGD: side by side

BELFA (Bel Fuse Inc.)FNGD (MicroSectors FANG Index -3X Inverse Leveraged ETNs due)
1-year return+80.5%-55.7%
5-year return+1292.5%-99.4%
Volatility (ann.)48.6%75.7%
Beta vs S&P 5001.30-4.54
Max drawdown (3Y)-43.4%-97.6%
Market cap$3.1B
P/E (trailing)54.320.6
Dividend yield0.11%0.00%
Sector / categoryUS ListedUS Listed
Lower P/E: FNGD 20.6 vs 54.3Higher yield: BELFA 0.11% vs 0.00%Smaller drawdown: BELFA -43.4% vs -97.6%Higher 5y return: BELFA +1292.5% vs -99.4%
-52%0%+126%2025-09-052026-08-27
Price paths over the last 12 months, both indexed to 100 at the start (weekly closes). BELFA · FNGD

Year-by-year returns

YearBELFAFNGD
2022+117.0%+52.2%
2023+102.0%-90.1%
2024+39.8%-76.6%
2025+69.0%-61.4%
2026+40.6%-49.5%

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

Are BELFA and FNGD good diversifiers for each other?

Yes. With a correlation of -0.23, BELFA and FNGD have moved largely independently, which makes them a genuinely diversifying pair by historical standards.

FAQ

What is the correlation between BELFA and FNGD?

Using weekly returns as of 2026-08-27: -0.23 over 3 years, with -0.09 over the last year and -0.25 over 5 years.

Is FNGD a good diversifier for BELFA?

Yes. With a correlation of -0.23, BELFA and FNGD have moved largely independently, which makes them a genuinely diversifying pair by historical standards.

What does a correlation of -0.23 mean?

On the −1 to +1 scale, -0.23 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

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

BELFA vs FNGD: 3-year weekly correlation -0.23BELFA vs FNGD-0.23

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

[![BELFA vs FNGD correlation](https://www.pairbook.io/api/v1/badge/belfa-vs-fngd.svg)](https://www.pairbook.io/pair/belfa-vs-fngd/)

The core API is free. Terms and every endpoint in the API documentation.

Related comparisons

Hubs: BELFA correlations · FNGD correlations