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ERII
Energy Recovery, Inc.
stock NASDAQ

At Close

Aug 7, 2026 3:59:58 PM EDT

8.67USD-0.687%(-0.06)976,276

0.00Bid 0.00Ask 0.00Spread

Pre-market

Aug 6, 2026 9:28:30 AM EDT

8.33USD-4.582%(-0.40)0

After-hours

Aug 7, 2026 4:44:30 PM EDT

8.85USD+2.076%(+0.18)140,299

OverviewOption ChainHistoricalExchangesShortsMore

Expiration Dates

Aug 21, 2026 Sep 18, 2026 Nov 20, 2026 Feb 19, 2027

ITM/OTM for Aug 21, 2026View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
435	4,208	239	949

ERII Aug 21, 2026 Exp. - Volume by Strike

Puts

Calls

ERII Aug 21, 2026 Exp. - Open Interest by Strike

Puts

Calls

ERII Aug 21, 2026 Exp. - Max Pain @ $7.50

Puts

Calls

ERII Aug 21, 2026 Exp. - Option Chain

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
30.00 C	0.20	+900.00%	1	31	05-19	ERII260821C00030000
25.00 C	0.17	-10.53%	5	6	12-26	ERII260821C00025000
22.50 C	0.40	+17.65%	3	11	03-12	ERII260821C00022500
20.00 C	0.12	+20.00%	1	134	07-22	ERII260821C00020000
17.50 C	0.05	-93.33%	5	51	08-06	ERII260821C00017500
15.00 C	0.05	-37.50%	7	175	08-06	ERII260821C00015000
12.50 C	0.05	0.00%	11	2,498	08-06	ERII260821C00012500
10.00 C	0.08	-80.00%	101	1,302	08-06	ERII260821C00010000
7.50 C	1.69	+11.92%	1	425	08-05	ERII260821C00007500
5.00 C	3.00	-32.43%	1	9	07-16	ERII260821C00005000
2.50 C	6.00	-4.31%	2	1	06-12	ERII260821C00002500

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
30.00 P	0	0%	0			ERII260821P00030000
25.00 P	0	0%	0			ERII260821P00025000
22.50 P	0	0%	0			ERII260821P00022500
20.00 P	11.49	0%	2	1	06-16	ERII260821P00020000
17.50 P	0	0%	0			ERII260821P00017500
15.00 P	5.00	+133.64%	2	14	03-12	ERII260821P00015000
12.50 P	3.70	+2.78%	1	51	08-05	ERII260821P00012500
10.00 P	1.70	+13.33%	1	173	08-06	ERII260821P00010000
7.50 P	0.20	0.00%	585	949	08-05	ERII260821P00007500
5.00 P	0	0%	0			ERII260821P00005000
2.50 P	0	0%	0			ERII260821P00002500

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