US Ecology Inc.
US ˙ NASDAQ ˙ US91732J1025
QUESTO SIMBOLO NON E' PIU' ATTIVO

SecurityECOL / US Ecology Inc.
InstitutionAperio Group, LLC
Latest Disclosed Ownership17,164 shares
Latest Disclosed Value $ 624,000
Aperio Group, LLC reports 18.69% decrease in ownership of ECOL / US Ecology Inc.

On February 5, 2021 - Aperio Group, LLC filed a 13F-HR form disclosing ownership of 17,164 shares of US Ecology Inc. (US:ECOL) valued at $623,568 USD as of December 31, 2020. The entity filed a previous 13F-HR on November 6, 2020 disclosing 21,110 shares of US Ecology Inc.. This represents a change in shares of -18.69% during the quarter. The current value of the position is $823,700 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2021-02-05 2020-12-31 13F US ECOLOGY COM 91734M103 17,164 -3,946 -18.69 624 -9.57 0.0018
2020-11-06 2020-09-30 13F US ECOLOGY COM 91734M103 21,110 -961 -4.35 690 -7.75 0.0023
2020-08-13 2020-06-30 13F US ECOLOGY COM 91734M103 22,071 10,594 92.31 748 114.33 0.0028
2020-05-05 2020-03-31 13F US ECOLOGY COM 91734M103 11,477 5,161 81.71 349 -4.64 0.0015
2020-02-13 2019-12-31 13F US ECOLOGY COM ADDED 91734M103 6,316 -319 -4.81 366 -13.68 0.0013
2019-11-06 2019-09-30 13F US ECOLOGY COM 91732J102 6,635 372 5.94 424 13.67 0.0017
2019-07-30 2019-06-30 13F US ECOLOGY COM 91732J102 6,263 -450 -6.70 373 -0.80 0.0015
2019-05-13 2019-03-31 13F US ECOLOGY COM 91732J102 6,713 564 9.17 376 -2.84 0.0016
2019-05-06 2018-12-31 13F/A-1 US ECOLOGY COM 91732J102 6,149 79 1.30 387 -13.62 0.0020
2019-02-14 2018-12-31 13F US ECOLOGY COM 91732J102 5,807 -263 366
2019-05-06 2018-09-30 13F/A-1 US ECOLOGY COM 91732J102 6,070 480 8.59 448 25.84 0.0020
2018-10-17 2018-09-30 13F US ECOLOGY COMMON 91732J102 6,070 480 448
2019-05-06 2018-06-30 13F/A-1 US ECOLOGY COM 91732J102 5,590 515 10.15 356 31.85 0.0017
2018-07-30 2018-06-30 13F US ECOLOGY COMMON 91732J102 5,590 515 356
2019-05-01 2018-03-31 13F/A-1 US ECOLOGY COM 91732J102 5,075 -31 -0.61 270 3.85 0.0013
2018-05-08 2018-03-31 13F US ECOLOGY COMMON 91732J102 5,075 -31 270
2019-05-01 2017-12-31 13F/A-1 US ECOLOGY COM 91732J102 5,106 -686 -11.84 260 -16.67 0.0013
2018-02-02 2017-12-31 13F US ECOLOGY COMMON 91732J102 5,106 -686 260
2019-05-01 2017-09-30 13F/A-1 US ECOLOGY COM 91732J102 5,792 446 8.34 312 15.56 0.0018
2017-10-25 2017-09-30 13F US ECOLOGY COMMON 91732J102 5,792 446 312
2019-04-22 2017-06-30 13F/A-1 US ECOLOGY COM 91732J102 5,346 -111 -2.03 270 5.47 0.0017
2017-07-18 2017-06-30 13F US ECOLOGY COMMON 91732J102 5,346 -111 270
2019-04-22 2017-03-31 13F/A-1 US ECOLOGY COM 91732J102 5,457 -2,777 -33.73 256 -36.79 0.0018
2017-05-05 2017-03-31 13F US ECOLOGY COMMON 91732J102 5,457 -2,777 256
2019-04-22 2016-12-31 13F/A-1 US ECOLOGY COM 91732J102 8,234 621 8.16 405 18.77 0.0031
2017-02-14 2016-12-31 13F US ECOLOGY COMMON 91732J102 8,234 621 405
2019-04-12 2016-09-30 13F/A-1 US ECOLOGY COM 91732J102 7,613 18 0.24 341 -2.29 0.0025
2016-11-01 2016-09-30 13F US ECOLOGY COMMON 91732J102 7,613 18 341
2019-04-12 2016-06-30 13F/A-1 US ECOLOGY COM 91732J102 7,595 585 8.35 349 12.58 0.0027
2016-08-12 2016-06-30 13F US ECOLOGY COMMON 91732J102 7,595 585 349
2019-04-12 2016-03-31 13F/A-1 US ECOLOGY COM 91732J102 7,010 7,010 310 0.0027
2016-04-28 2016-03-31 13F US ECOLOGY COMMON 91732J102 7,010 7,010 310
2015-10-19 2015-09-30 13F US ECOLOGY COMMON 91732J102 0 -4,960 -100.00 0 -100.00
2015-07-29 2015-06-30 13F US ECOLOGY COMMON 91732J102 4,960 659 15.32 242 12.56 0.0025
2015-04-29 2015-03-31 13F US ECOLOGY COMMON 91732J102 4,301 215
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.