Acorn Energy price to book ratio ACFN

Market value divided by the book value of the company's net assets, since 2011.

Today, Oct 23, 2026: 4.9×
10-year median: 6.9×
Against its 10-year history: 8th; percentile: 0 is its lowest day, 100 its highest
10-year range: 3.2× to 166×
Peer median: 1.6×

Acorn Energy's price to book ratio is 4.9× as of Oct 23, 2026.

That is below its ten-year median of 6.9×, lower than on 92% of days in the last ten years.

Over that time it ranged from 3.2× in Nov 2016 to 166× in Nov 2024.

The median for 10 industrial stocks of a similar size is 1.6×.

Price to book ratio over time

median 6.9×

The dashed line is the 10-year median and the shaded band the middle half of its days.

Open the interactive chart, with overlays and comparisons

Year by year

Year	End of year	Low	High
2026 so far	4.9×	4.8×	7.4×
2025	5.3×	4.5×	164×
2024	157×	124×	166×
2023	n/m a value too high to mean anything
2022	n/m a value too high to mean anything
2021	n/m a value too high to mean anything
2020	n/m a value too high to mean anything
2019	24.0×	20.6×	24.0×
2018	20.1×	5.4×	25.1×
2017	5.9×	3.8×	11.2×
2016	3.6×	1.3×	17.9×
2015	1.4×	0.6×	2.8×
2014	1.2×	1.0×	3.7×
2013	3.2×	1.5×	3.8×
2012	2.3×	1.6×	3.1×
2011	1.5×	1.2×	3.2×

Against its peers

Companies in Industrials nearest Acorn Energy's size, closest first, today.

Company	Price to book ratio
ACFNAcorn Energy	4.9×
MAMOMassimo	1.6×
AERTAeries Technology	n/m
CVUCPI Aerostructures	2.3×
MHHMastech Digital	0.8×
SIFSifco Industries	3.0×
LCUTLifetime Brands	0.9×
CMTCore Molding Technologies	1.3×
FCFranklin Covey	4.9×
HQIHireQuest	3.3×
HDSNHudson Technologies	0.9×
Peer median	1.6×

What the price to book ratio tells you

Market value divided by the accounting value of the company's net assets. Below 1 means the market values the business at less than what it owns on paper.

Book value misses brands, software and people, so asset-light companies always look expensive on it. Most useful for banks and industrials.

More on Acorn Energy

Valuation data, not investment advice. Prices as of Oct 23, 2026. Reported figures come from the company's filings with the SEC.