Security key
29270J100
Energy Recovery, Inc. - Common Stock, $0.001 par value (ERII)
CUSIP: 29270J100
Q1 2021 13F Holders as of 31 Mar 2021
- Security type / class
- Equity / Common Stock, $0.001 par value
- Total 13F shares
- 26,598,480
- Total 13F value
- $487,803,860
- Share change
- +2,100,339
- Put/Call ratio
- 59%
- SEC-reported price per share
- $18.34
- Number of holders
- 137
- Value change
- +$41,201,790
- Number of buys
- 78
- Number of sells
- 43
- Shares outstanding
- 51,040,071
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2021
Institutions
137
Top holders
10
ERII full security history
Ownership snapshot
Full 13F holder table
Energy Recovery, Inc. SEC filings
Energy Recovery, Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of ERII - Energy Recovery, Inc. - Common Stock, $0.001 par value (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Trigran Investments, Inc.
Disclosed value leader
Trigran Investments, Inc.
Comparable rows
0/15
Latest evidence
31 Dec 2020
13F
Highest disclosed value: $75,571,000
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
Trigran Investments, Inc. has the largest disclosed position value at $75.57M.
0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Trigran Investments, Inc.'s linked filing trail.
Disclosed position value
Top 5
Trigran Investments, Inc.
$75.57M
BlackRock Finance, Inc.
$44.56M
VANGUARD GROUP INC
$30.85M
AVENIR CORP
$21.43M
Bank of New York Mellon Corp
$18.1M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Trigran Investments, Inc. |
13F
Company
|
—
denominator unverified
|
$75,571,000
5,540,420 shares
|
— | 31 Dec 2020 |
| BlackRock Finance, Inc. |
13F
Company
|
—
denominator unverified
|
$44,556,000
3,266,530 shares
|
— | 31 Dec 2020 |
| VANGUARD GROUP INC |
13F
Company
|
—
denominator unverified
|
$30,851,000
2,261,735 shares
|
— | 31 Dec 2020 |
| AVENIR CORP |
13F
Company
|
—
denominator unverified
|
$21,427,000
1,570,863 shares
|
— | 31 Dec 2020 |
| Bank of New York Mellon Corp |
13F
Company
|
—
denominator unverified
|
$18,101,000
1,326,995 shares
|
— | 31 Dec 2020 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13F
Company
|
—
denominator unverified
|
$13,698,000
1,004,266 shares
|
— | 31 Dec 2020 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2021
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
137
Shares
26,598,480
Rows available
137
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2021 vs Q1 2021 Across Filers
Q1 2021 holders
137
Q1 2021 holders
137
Holder diff
0
| Investor | Q1 2021 Shares | Q1 2021 Shares | Share Diff | Share Chg % | Q1 2021 value | Q1 2021 value | Value change | Value Chg % |
|---|