Tetra Tech, Inc.
US ˙ NasdaqGS ˙ US88162G1031

SecurityTTEK / Tetra Tech, Inc.
InstitutionAperio Group, LLC
Latest Disclosed Ownership35,772 shares
Latest Disclosed Value $ 4,142,000
Aperio Group, LLC reports 5.29% increase in ownership of TTEK / Tetra Tech, Inc.

On February 5, 2021 - Aperio Group, LLC filed a 13F-HR form disclosing ownership of 35,772 shares of Tetra Tech, Inc. (US:TTEK) valued at $4,141,682 USD as of December 31, 2020. The entity filed a previous 13F-HR on November 6, 2020 disclosing 33,975 shares of Tetra Tech, Inc.. This represents a change in shares of 5.29% during the quarter. The current value of the position is $998,039 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 TETRA TECH INC COM 88162G103 35,772 1,797 5.29 4,142 27.64 0.0123
2020-11-06 2020-09-30 13F TETRA TECH INC COM 88162G103 33,975 -31 -0.09 3,245 20.59 0.0110
2020-08-13 2020-06-30 13F TETRA TECH INC COM 88162G103 34,006 -21,162 -38.36 2,691 -30.93 0.0099
2020-05-05 2020-03-31 13F TETRA TECH INC COM 88162G103 55,168 -2,236 -3.90 3,896 -21.23 0.0172
2020-02-13 2019-12-31 13F TETRA TECH INC COM 88162G103 57,404 12,385 27.51 4,946 26.63 0.0178
2019-11-06 2019-09-30 13F TETRA TECH INC COM 88162G103 45,019 8,395 22.92 3,906 35.77 0.0154
2019-07-30 2019-06-30 13F TETRA TECH INC COM 88162G103 36,624 5,739 18.58 2,877 56.36 0.0118
2019-05-13 2019-03-31 13F TETRA TECH INC COM 88162G103 30,885 -4,080 -11.67 1,840 1.66 0.0079
2019-05-06 2018-12-31 13F/A-1 TETRA TECH INC COM 88162G103 34,965 -1,579 -4.32 1,810 -27.48 0.0091
2019-02-14 2018-12-31 13F TETRA TECH INC COM 88162G103 34,244 -2,300 1,773
2019-05-06 2018-09-30 13F/A-1 TETRA TECH INC COM 88162G103 36,544 1,981 5.73 2,496 23.44 0.0110
2018-10-17 2018-09-30 13F TETRA TECH INC NEW COMMON 88162G103 36,544 1,981 2,496
2019-05-06 2018-06-30 13F/A-1 TETRA TECH INC COM 88162G103 34,563 6,086 21.37 2,022 45.05 0.0097
2018-07-30 2018-06-30 13F TETRA TECH INC NEW COMMON 88162G103 34,563 6,086 2,022
2019-05-01 2018-03-31 13F/A-1 TETRA TECH INC COM 88162G103 28,477 460 1.64 1,394 3.34 0.0069
2018-05-08 2018-03-31 13F TETRA TECH INC NEW COMMON 88162G103 28,477 460 1,394
2019-05-01 2017-12-31 13F/A-1 TETRA TECH INC COM 88162G103 28,017 2,039 7.85 1,349 11.58 0.0070
2018-02-02 2017-12-31 13F TETRA TECH INC NEW COMMON 88162G103 28,017 2,039 1,349
2019-05-01 2017-09-30 13F/A-1 TETRA TECH INC COM 88162G103 25,978 263 1.02 1,209 2.81 0.0068
2017-10-25 2017-09-30 13F TETRA TECH INC NEW COMMON 88162G103 25,978 263 1,209
2019-04-22 2017-06-30 13F/A-1 TETRA TECH INC COM 88162G103 25,715 2,204 9.37 1,176 22.50 0.0072
2017-07-18 2017-06-30 13F TETRA TECH INC NEW COMMON 88162G103 25,715 2,204 1,176
2019-04-22 2017-03-31 13F/A-1 TETRA TECH INC COM 88162G103 23,511 -2,736 -10.42 960 -15.27 0.0066
2017-05-05 2017-03-31 13F TETRA TECH INC NEW COMMON 88162G103 23,511 -2,736 960
2019-04-22 2016-12-31 13F/A-1 TETRA TECH INC COM 88162G103 26,247 1,375 5.53 1,133 28.46 0.0087
2017-02-14 2016-12-31 13F TETRA TECH INC NEW COMMON 88162G103 26,247 1,375 1,133
2019-04-12 2016-09-30 13F/A-1 TETRA TECH INC COM 88162G103 24,872 67 0.27 882 15.60 0.0064
2016-11-01 2016-09-30 13F TETRA TECH INC NEW COMMON 88162G103 24,872 67 882
2019-04-12 2016-06-30 13F/A-1 TETRA TECH INC COM 88162G103 24,805 421 1.73 763 4.95 0.0060
2016-08-12 2016-06-30 13F TETRA TECH INC NEW COMMON 88162G103 24,805 421 763
2019-04-12 2016-03-31 13F/A-1 TETRA TECH INC COM 88162G103 24,384 4,715 23.97 727 41.99 0.0062
2016-04-28 2016-03-31 13F TETRA TECH INC NEW COMMON 88162G103 24,384 4,715 727
2016-01-21 2015-12-31 13F TETRA TECH INC NEW COMMON 88162G103 19,669 3,345 20.49 512 28.97 0.0047
2015-10-19 2015-09-30 13F TETRA TECH INC NEW COMMON 88162G103 16,324 755 4.85 397 -0.50 0.0040
2015-07-29 2015-06-30 13F TETRA TECH INC NEW COMMON 88162G103 15,569 901 6.14 399 13.35 0.0041
2015-04-29 2015-03-31 13F TETRA TECH INC NEW COMMON 88162G103 14,668 14,668 0.00 352 0.0039
2015-01-30 2014-12-31 13F TETRA TECH INC NEW COMMON 88162G103 0 -8,778 -100.00 0 -100.00
2014-10-21 2014-09-30 13F TETRA TECH INC NEW COMMON 88162G103 8,778 48 0.55 219 -8.75 0.0030
2014-07-23 2014-06-30 13F TETRA TECH INC NEW COMMON 88162G103 8,730 -1,070 -10.92 240 -17.24 0.0035
2014-04-25 2014-03-31 13F TETRA TECH INC NEW COMMON 88162G103 9,800 290 30.04 0.0041
2014-01-30 2013-12-31 13F TETRA TECH INC NEW COMMON 88162G103 223
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.