Growth Metrics

Energy Recovery (ERII) Shares Outstanding (Diluted Average) (2009 - 2026)

Energy Recovery (ERII) reported Shares Outstanding (Diluted Average) of $52.7 million for Q1 2026, down 4.08% year-over-year from $54.9 million in Q1 2025, and down 2.77% on a QoQ basis from $54.2 million in Q4 2025.

Energy Recovery (ERII) has 18 years of Shares Outstanding (Diluted Average) data on file, last reported at $52.7 million in Q1 2026.

  • Quarterly Shares Outstanding (Diluted Average) fell 4.08% year-over-year to $52.7 million in Q1 2026, while the trailing twelve-month figure through Mar 2026 was $52.7 million (down 4.08% YoY) and the FY2025 annual result came in at $54.2 million, down 6.34% from the prior year.
  • Shares Outstanding (Diluted Average) retreated to $52.7 million in Q1 2026 per ERII's latest filing, from $54.2 million in the prior quarter.
  • Across five years, Shares Outstanding (Diluted Average) topped out at $58.3 million in Q3 2024 and bottomed at $52.7 million in Q1 2026.
  • The 5-year median for Shares Outstanding (Diluted Average) is $57.4 million (2024), against an average of $56.4 million.
  • The widest annual swing landed in 2024, when Shares Outstanding (Diluted Average) grew 1.9%; it then decreased 8.28% in 2025.
  • Tracing ERII's Shares Outstanding (Diluted Average) over 5 years: stood at $57.6 million in 2022, then advanced by 0.17% to $57.7 million in 2023, then climbed by 0.14% to $57.8 million in 2024, then retreated by 6.34% to $54.2 million in 2025, then decreased by 2.77% to $52.7 million in 2026.
  • Per Business Quant, the three latest ERII Shares Outstanding (Diluted Average) figures stand at $52.7 million (Q1 2026), $54.2 million (Q4 2025), and $53.5 million (Q3 2025).

Peer Comparison

# Company Market Cap Enterprise Value Gross Profit (Qtr) Shares (Diluted Avg.) (Qtr)
1 Veralto 20.72 Bn 19.29 Bn 854.00 Mn 249.20 Mn
2 Zurn Elkay Water Solutions 7.83 Bn 7.56 Bn 205.80 Mn 1.98 Mn
3 Federal Signal 6.47 Bn 6.40 Bn 179.40 Mn 61.50 Mn
4 Ceco Environmental 2.82 Bn 2.78 Bn 63.92 Mn -
5 PureCycle Technologies 2.21 Bn 2.11 Bn - -
6 Euro Tech Holdings 1.36 Bn 1.34 Bn - 1.07 Mn
7 Energy Recovery 421.81 Mn 335.66 Mn 2.70 Mn 52.66 Mn
8 CleanCore Solutions 173.22 Mn 156.17 Mn -419,259.00 216.01 Mn
9 Arq 116.43 Mn 111.76 Mn 9.94 Mn 41.73 Mn
10 374Water 42.95 Mn 42.95 Mn -2.43 Mn 15.23 Mn

Historic Data

Download Data 🔒
DateValue
Mar 31, 2026 52.66 Mn
Dec 31, 2025 54.16 Mn
Sep 30, 2025 53.47 Mn
Jun 30, 2025 54.49 Mn
Mar 31, 2025 54.90 Mn
Dec 31, 2024 57.82 Mn
Sep 30, 2024 58.29 Mn
Jun 30, 2024 57.37 Mn
Mar 31, 2024 57.10 Mn
Dec 31, 2023 57.74 Mn
Sep 30, 2023 57.97 Mn
Jun 30, 2023 56.30 Mn
Mar 31, 2023 56.23 Mn
Dec 31, 2022 57.64 Mn
Sep 30, 2022 57.37 Mn
Jun 30, 2022 57.86 Mn
Mar 31, 2022 58.18 Mn
Dec 31, 2021 58.72 Mn
Sep 30, 2021 58.71 Mn
Jun 30, 2021 58.82 Mn
Mar 31, 2021 58.60 Mn
Dec 31, 2020 56.64 Mn
Sep 30, 2020 56.44 Mn
Jun 30, 2020 56.37 Mn
Mar 31, 2020 56.54 Mn
Dec 31, 2019 56.07 Mn
Sep 30, 2019 56.38 Mn
Jun 30, 2019 55.76 Mn
Mar 31, 2019 55.37 Mn
Dec 31, 2018 55.34 Mn
Sep 30, 2018 55.30 Mn
Jun 30, 2018 55.44 Mn
Mar 31, 2018 53.99 Mn
Dec 31, 2017 55.61 Mn
Sep 30, 2017 55.57 Mn
Jun 30, 2017 55.80 Mn
Mar 31, 2017 56.06 Mn
Dec 31, 2016 55.45 Mn
Sep 30, 2016 52.11 Mn
Jun 30, 2016 55.70 Mn
Dec 31, 2015 52.15 Mn
Jun 30, 2015 51.99 Mn
Dec 31, 2014 51.68 Mn
Jun 30, 2013 51.00 Mn
Jun 30, 2012 52.07 Mn
Mar 31, 2012 52.62 Mn
Dec 31, 2011 52.61 Mn
Mar 31, 2011 52.59 Mn
Dec 31, 2010 52.07 Mn
Dec 31, 2009 52.64 Mn