TETRA Technologies, Inc.
US ˙ NYSE ˙ US88162F1057

SecurityTTI / TETRA Technologies, Inc.
InstitutionBoston Partners
Latest Disclosed Ownership52,546 shares
Latest Disclosed Value $ 447,690
Boston Partners reports 26.06% decrease in ownership of TTI / TETRA Technologies, Inc.

On May 11, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 52,546 shares of TETRA Technologies, Inc. (US:TTI) valued at $447,692 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 71,064 shares of TETRA Technologies, Inc.. This represents a change in shares of -26.06% during the quarter. The current value of the position is $511,798 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)
2026-05-11 2026-03-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 52,546 -18,518 -26.06 448 -32.78 0.0002
2026-02-13 2025-12-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 71,064 -114,223 -61.65 666 -37.56 0.0007
2025-11-13 2025-09-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 185,287 -80,213 -30.21 1,065 19.39 0.0011
2025-08-12 2025-06-30 13F/A-1 TETRA TECHNOLOGIES INC DEL COM 88162F105 265,500 -68,110 -20.42 892 -20.36 0.0010
2025-08-07 2025-06-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 265,500 -68,110 892 0.0004
2025-05-13 2025-03-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 333,610 -18,774 -5.33 1,121 -11.18 0.0014
2025-02-11 2024-12-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 352,384 8,873 2.58 1,262 18.52 0.0015
2024-11-12 2024-09-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 343,511 32,258 10.36 1,065 -1.12 0.0013
2024-08-14 2024-06-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 311,253 263,960 558.14 1,077 414.83 0.0013
2024-05-28 2024-03-31 13F/A-1 TETRA TECHNOLOGIES INC DEL COM 88162F105 47,293 -37,778 -44.41 210 -45.57 0.0002
2024-05-13 2024-03-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 47,293 -37,778 210 0.0001
2024-02-07 2023-12-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 85,071 -6,866 -7.47 385 -34.47 0.0005
2023-11-08 2023-09-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 91,937 -130,053 -58.59 587 -21.87 0.0008
2023-08-10 2023-06-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 221,990 221,990 750 0.0010
2021-02-10 2020-12-31 13F/A-1 TETRA TECHNOLOGIES INC DEL COM 88162F105 0 -284,429 -100.00 0 -100.00
2020-11-13 2020-09-30 13F/A-1 TETRA TECHNOLOGIES INC DEL COM 88162F105 284,429 -129,380 -31.27 145 -34.39 0.0003
2020-11-09 2020-09-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 413,809 0 221 162.2403
2020-08-12 2020-06-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 413,809 366,187 768.95 221 1,373.33 0.0004
2020-05-13 2020-03-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 47,622 -1,484,497 -96.89 15 -99.50 0.0000
2020-02-06 2019-12-31 13F/A-1 TETRA TECHNOLOGIES INC DEL COM 88162F105 1,532,119 170,083 12.49 3,003 9.68 0.0040
2020-02-05 2019-12-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 1,532,119 170,083 3,003 1,688.3743
2019-11-20 2019-09-30 13F/A-1 TETRA TECHNOLOGIES INC DEL COM 88162F105 1,362,036 -509,543 -27.23 2,738 -10.26 0.0037
2019-11-08 2019-09-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 1,871,579 0 3,051 0.0040
2019-08-26 2019-06-30 13F/A-1 TETRA TECHNOLOGIES INC DEL COM 88162F105 1,871,579 575,631 44.42 3,051 0.59 0.0040
2019-08-09 2019-06-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 1,871,579 575,631 3,051
2019-05-13 2019-03-31 13F/A-1 TETRA TECHNOLOGIES INC DEL COM 88162F105 1,295,948 352,188 37.32 3,033 91.24 0.0040
2019-05-03 2019-03-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 1,295,948 352,188 3,033
2019-02-07 2018-12-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 943,760 4,539 0.48 1,586 -62.56 0.0023
2018-11-14 2018-09-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 939,221 -525,320 -35.87 4,236 -35.00 0.0049
2018-08-03 2018-06-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 1,464,541 -1,462,616 -49.97 6,517 -40.63 0.0078
2018-05-04 2018-03-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 2,927,157 -803,120 -21.53 10,977 -31.08 0.0132
2018-02-14 2017-12-31 13F/A-1 TETRA TECHNOLOGIES INC DEL COM 88162F105 3,730,277 -1,447,847 -27.96 15,928 7.56 0.0188
2018-02-01 2017-12-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 3,730,277 -1,447,847 15,928
2017-11-02 2017-09-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 5,178,124 415,120 8.72 14,809 11.44 0.0183
2017-08-02 2017-06-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 4,763,004 -24,160 -0.50 13,289 -31.79 0.0169
2017-05-03 2017-03-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 4,787,164 818,520 20.62 19,483 -2.20 0.0249
2017-02-06 2016-12-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 3,968,644 1,330,604 50.44 19,922 23.60 0.0262
2016-11-09 2016-09-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 2,638,040 -199,457 -7.03 16,118 -10.83 0.0225
2016-08-05 2016-06-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 2,837,497 1,222,597 75.71 18,075 76.26 0.0261
2016-05-12 2016-03-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 1,614,900 656,950 68.58 10,255 42.35 0.0151
2016-02-08 2015-12-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 957,950 -1,185,670 -55.31 7,204 -43.14 0.0103
2015-11-10 2015-09-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 2,143,620 18,410 0.87 12,669 -6.56 0.0193
2015-08-10 2015-06-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 2,125,210 877,203 70.29 13,559 75.79 0.0195
2015-05-05 2015-03-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 1,248,007 515,353 70.34 7,713 57.60 0.0115
2015-02-09 2014-12-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 732,654 45,934 6.69 4,894 -34.13 0.0073
2014-11-12 2014-09-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 686,720 -115,820 -14.43 7,430 -21.41 0.0121
2014-08-08 2014-06-30 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 802,540 91,780 12.91 9,454 3.91 0.0158
2014-05-07 2014-03-31 13F TETRA TECHNOLOGIES INC DEL COM 88162F105 710,760 710,760 9,098 0.0166
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.