NASDAQ:ERII | Historical Stock Price | Energy Recovery, Inc.

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
2008-07-02 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$1.87$3.30$5.81$10.23$18.03$31.762008-07-022026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

View year

Historical Stock Price — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$21.49$21.49138,600——
2021-12-30$21.34$21.34207,500——
2021-12-29$21.12$21.12137,200——
2021-12-28$21.34$21.34124,400——
2021-12-27$21.41$21.41284,900——
2021-12-23$21.10$21.10205,700——
2021-12-22$20.75$20.75191,700——
2021-12-21$20.51$20.51396,600——
2021-12-20$20.60$20.60577,600——
2021-12-17$20.36$20.36963,000——
2021-12-16$20.61$20.61526,500——
2021-12-15$20.67$20.67295,400——
2021-12-14$20.39$20.39340,200——
2021-12-13$20.41$20.41280,200——
2021-12-10$20.60$20.60180,700——
2021-12-09$20.93$20.93234,600——
2021-12-08$21.38$21.38167,300——
2021-12-07$21.54$21.54253,100——
2021-12-06$21.31$21.31294,200——
2021-12-03$21.15$21.15266,800——
2021-12-02$21.08$21.08220,500——
2021-12-01$20.64$20.64262,700——
2021-11-30$21.25$21.25393,500——
2021-11-29$21.68$21.68240,200——
2021-11-26$21.92$21.92324,800——
2021-11-24$22.53$22.53202,000——
2021-11-23$22.65$22.65439,900——
2021-11-22$23.74$23.74605,200——
2021-11-19$24.18$24.181,039,300——
2021-11-18$23.39$23.39526,000——
2021-11-17$22.76$22.76322,400——
2021-11-16$22.23$22.23259,600——
2021-11-15$22.10$22.10291,700——
2021-11-12$22.63$22.63544,700——
2021-11-11$22.44$22.44276,200——
2021-11-10$22.41$22.41328,300——
2021-11-09$22.93$22.93575,400——
2021-11-08$22.43$22.43347,800——
2021-11-05$22.43$22.43461,100——
2021-11-04$22.00$22.00700,200——
2021-11-03$21.27$21.27832,800——
2021-11-02$20.66$20.66549,900——
2021-11-01$20.51$20.51460,000——
2021-10-29$20.32$20.32314,200——
2021-10-28$20.17$20.17266,100——
2021-10-27$19.77$19.77250,600——
2021-10-26$19.57$19.57271,800——
2021-10-25$19.75$19.75490,500——
2021-10-22$19.20$19.20352,200——
2021-10-21$18.85$18.852,981,100——
2021-10-20$19.58$19.58263,300——
2021-10-19$19.51$19.51355,900——
2021-10-18$20.05$20.05265,600——
2021-10-15$19.94$19.94492,200——
2021-10-14$19.51$19.51347,100——
2021-10-13$19.10$19.10161,900——
2021-10-12$19.02$19.02172,400——
2021-10-11$18.90$18.90238,700——
2021-10-08$19.39$19.39110,200——
2021-10-07$19.69$19.69200,100——
2021-10-06$19.48$19.48226,700——
2021-10-05$19.43$19.43226,200——
2021-10-04$19.32$19.32234,800——
2021-10-01$19.53$19.53332,100——
2021-09-30$19.03$19.03440,300——
2021-09-29$19.21$19.21203,100——
2021-09-28$19.73$19.73280,600——
2021-09-27$20.44$20.44410,500——
2021-09-24$20.14$20.14227,800——
2021-09-23$20.51$20.51264,200——
2021-09-22$19.77$19.77234,500——
2021-09-21$19.35$19.35236,300——
2021-09-20$19.24$19.24332,600——
2021-09-17$19.47$19.471,008,100——
2021-09-16$19.52$19.52435,300——
2021-09-15$20.47$20.47416,900——
2021-09-14$20.81$20.81204,000——
2021-09-13$21.47$21.47224,900——
2021-09-10$21.57$21.57229,700——
2021-09-09$21.47$21.47324,700——
2021-09-08$21.68$21.68319,900——
2021-09-07$22.33$22.33489,100——
2021-09-03$23.03$23.03519,600——
2021-09-02$22.50$22.50496,900——
2021-09-01$22.00$22.001,075,100——
2021-08-31$20.43$20.43271,000——
2021-08-30$20.08$20.08143,000——
2021-08-27$20.08$20.08175,600——
2021-08-26$19.68$19.68321,200——
2021-08-25$19.46$19.4693,700——
2021-08-24$19.52$19.52122,700——
2021-08-23$19.43$19.43128,100——
2021-08-20$18.95$18.95351,100——
2021-08-19$18.59$18.59218,000——
2021-08-18$18.83$18.83196,500——
2021-08-17$18.74$18.74275,000——
2021-08-16$18.93$18.93252,100——
2021-08-13$19.08$19.08234,200——
2021-08-12$19.51$19.51208,800——
2021-08-11$19.34$19.34239,100——
2021-08-10$19.01$19.01495,200——
2021-08-09$19.10$19.10326,100——
2021-08-06$19.18$19.18613,800——
2021-08-05$20.10$20.10232,800——
2021-08-04$19.59$19.59244,600——
2021-08-03$20.47$20.47247,100——
2021-08-02$19.99$19.99389,700——
2021-07-30$21.15$21.15248,800——
2021-07-29$21.19$21.19144,400——
2021-07-28$20.74$20.74164,200——
2021-07-27$20.48$20.48148,300——
2021-07-26$20.86$20.86193,600——
2021-07-23$20.62$20.62118,200——
2021-07-22$20.54$20.54175,200——
2021-07-21$20.80$20.80267,100——
2021-07-20$20.42$20.42266,500——
2021-07-19$19.66$19.66351,700——
2021-07-16$20.17$20.17215,000——
2021-07-15$20.61$20.61249,700——
2021-07-14$20.56$20.56339,300——
2021-07-13$21.46$21.46262,200——
2021-07-12$21.47$21.47379,900——
2021-07-09$20.82$20.82240,800——
2021-07-08$20.13$20.13527,000——
2021-07-07$20.36$20.36963,600——
2021-07-06$21.79$21.79440,900——
2021-07-02$21.70$21.70355,900——
2021-07-01$22.15$22.15747,900——
2021-06-30$22.78$22.781,011,200——
2021-06-29$22.04$22.04482,200——
2021-06-28$21.14$21.14249,000——
2021-06-25$21.22$21.22537,500——
2021-06-24$21.48$21.48297,800——
2021-06-23$21.02$21.02200,900——
2021-06-22$20.96$20.96254,100——
2021-06-21$20.77$20.77396,100——
2021-06-18$20.03$20.031,233,600——
2021-06-17$20.70$20.70483,500——
2021-06-16$21.26$21.26491,400——
2021-06-15$21.32$21.32465,400——
2021-06-14$20.81$20.81731,400——
2021-06-11$20.89$20.89506,700——
2021-06-10$20.78$20.78660,000——
2021-06-09$20.15$20.15254,800——
2021-06-08$20.21$20.21415,700——
2021-06-07$19.62$19.62378,300——
2021-06-04$20.08$20.08330,600——
2021-06-03$19.99$19.99412,200——
2021-06-02$19.60$19.60416,400——
2021-06-01$19.45$19.45564,100——
2021-05-28$19.01$19.01394,000——
2021-05-27$18.75$18.75567,900——
2021-05-26$17.99$17.99277,000——
2021-05-25$17.97$17.97216,800——
2021-05-24$18.14$18.14249,900——
2021-05-21$18.16$18.16417,300——
2021-05-20$17.70$17.70410,800——
2021-05-19$18.06$18.06497,400——
2021-05-18$17.81$17.81546,600——
2021-05-17$17.99$17.99522,800——
2021-05-14$17.72$17.72536,700——
2021-05-13$17.01$17.01623,500——
2021-05-12$16.76$16.76961,000——
2021-05-11$17.60$17.60812,400——
2021-05-10$17.81$17.811,276,100——
2021-05-07$20.65$20.65747,900——
2021-05-06$20.37$20.371,612,400——
2021-05-05$20.81$20.81335,100——
2021-05-04$21.14$21.14427,600——
2021-05-03$21.36$21.36291,500——
2021-04-30$21.20$21.20408,500——
2021-04-29$21.81$21.81426,800——
2021-04-28$21.62$21.62222,100——
2021-04-27$21.80$21.80321,900——
2021-04-26$21.86$21.86640,500——
2021-04-23$21.68$21.68984,400——
2021-04-22$20.74$20.741,205,900——
2021-04-21$20.60$20.602,048,000——
2021-04-20$18.00$18.00428,400——
2021-04-19$18.62$18.62306,500——
2021-04-16$18.27$18.27358,700——
2021-04-15$18.31$18.31229,600——
2021-04-14$18.50$18.50159,600——
2021-04-13$18.25$18.25157,500——
2021-04-12$18.32$18.32277,300——
2021-04-09$18.65$18.65219,200——
2021-04-08$18.62$18.62202,600——
2021-04-07$18.54$18.54239,400——
2021-04-06$18.99$18.99361,300——
2021-04-05$19.04$19.04277,600——
2021-04-01$19.13$19.13225,100——
2021-03-31$18.34$18.34201,900——
2021-03-30$18.18$18.18179,600——
2021-03-29$17.83$17.83287,600——
2021-03-26$18.82$18.82319,300——
2021-03-25$17.78$17.78259,200——
2021-03-24$17.69$17.69318,900——
2021-03-23$17.77$17.77336,700——
2021-03-22$18.06$18.06393,300——
2021-03-19$18.37$18.371,394,500——
2021-03-18$18.95$18.95504,300——
2021-03-17$19.05$19.05529,600——
2021-03-16$18.10$18.101,102,600——
2021-03-15$19.42$19.42655,800——
2021-03-12$19.30$19.30968,500——
2021-03-11$18.87$18.87744,500——
2021-03-10$18.07$18.07497,400——
2021-03-09$17.49$17.49435,600——
2021-03-08$16.93$16.93432,500——
2021-03-05$16.37$16.37599,700——
2021-03-04$16.25$16.25402,400——
2021-03-03$17.33$17.33333,300——
2021-03-02$16.74$16.74671,300——
2021-03-01$18.27$18.27674,000——
2021-02-26$17.60$17.60662,400——
2021-02-25$17.49$17.49911,800——
2021-02-24$16.89$16.891,008,300——
2021-02-23$16.29$16.291,759,400——
2021-02-22$15.17$15.17217,500——
2021-02-19$15.29$15.29286,800——
2021-02-18$14.76$14.76144,000——
2021-02-17$15.02$15.02188,800——
2021-02-16$15.30$15.30416,100——
2021-02-12$15.07$15.07270,800——
2021-02-11$14.87$14.87120,800——
2021-02-10$14.70$14.70108,500——
2021-02-09$14.88$14.88132,000——
2021-02-08$14.75$14.75262,700——
2021-02-05$14.46$14.46275,400——
2021-02-04$13.96$13.96132,300——
2021-02-03$13.97$13.97199,900——
2021-02-02$14.00$14.00177,100——
2021-02-01$13.96$13.96110,000——
2021-01-29$13.84$13.84241,500——
2021-01-28$14.03$14.03224,700——
2021-01-27$13.58$13.58191,700——
2021-01-26$14.22$14.22145,400——
2021-01-25$14.30$14.30201,400——
2021-01-22$14.55$14.55148,700——
2021-01-21$14.46$14.46190,500——
2021-01-20$14.80$14.80238,400——
2021-01-19$14.81$14.81167,800——
2021-01-15$14.51$14.51218,800——
2021-01-14$14.73$14.73262,600——
2021-01-13$14.12$14.12545,000——
2021-01-12$14.91$14.91151,700——
2021-01-11$14.60$14.60292,100——
2021-01-08$15.09$15.09252,500——
2021-01-07$15.09$15.09335,200——
2021-01-06$14.45$14.45421,400——
2021-01-05$14.45$14.45330,500——
2021-01-04$13.75$13.75532,100——