# US ECOLOGY INC (ECOLW)

> Institutional ownership reported to the SEC as of Q1 2022, from Form 13F filings. Source: https://holderbook.com/stocks/ECOLW/

- Reporting holders: 8
- Reported value: $25.4M
- Held through calls: 93.1%
- Held through puts: 1.2%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [MILLENNIUM MANAGEMENT LLC](https://holderbook.com/funds/1273087-millennium-management-llc/) | $13.6M | 0 | 0.0% | 10 |
| [PICTET ASSET MANAGEMENT SA](https://holderbook.com/funds/1361570-pictet-asset-management-sa/) | $9.9M | 0 | 0.0% | 3 |
| [ZAZOVE ASSOCIATES LLC](https://holderbook.com/funds/1009012-zazove-associates-llc/) | $948.0K | 215,457 | 0.1% | 9 |
| [SIMPLEX TRADING, LLC](https://holderbook.com/funds/1488542-simplex-trading-llc/) | $464.0K | 0 | 0.0% | 1 |
| [CSS LLC/IL](https://holderbook.com/funds/1103646-css-llc-il/) | $194.0K | 44,077 | 0.0% | 1 |
| [GOLDMAN SACHS GROUP INC](https://holderbook.com/funds/886982-goldman-sachs-group-inc/) | $162.0K | 36,750 | 0.0% | 10 |
| [Vestcor Inc](https://holderbook.com/funds/1536925-vestcor-inc/) | $65.0K | 14,699 | 0.0% | 10 |
| [DELTEC ASSET MANAGEMENT LLC](https://holderbook.com/funds/1269950-deltec-asset-management-llc/) | $62.0K | 14,000 | 0.0% | 1 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q1 2022 | 8 | $25.4M |
| Q4 2021 | 6 | $24.0M |
| Q3 2021 | 7 | $25.1M |
| Q2 2021 | 9 | $39.1M |
| Q1 2021 | 8 | $42.6M |
| Q4 2020 | 10 | $107.4M |
| Q3 2020 | 15 | $73.4M |
| Q2 2020 | 16 | $62.7M |
| Q1 2020 | 17 | $53.2M |
| Q4 2019 | 22 | $61.8M |