Entegris, Inc.
MX ˙ BMV ˙ US29362U1043
SecurityMX:ENTG / Entegris, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership430,837 shares
Latest Disclosed Value $ 50,511,255
Rhumbline Advisers reports 2.20% increase in ownership of ENTG / Entegris, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 430,837 shares of Entegris, Inc. (MX:ENTG) valued at $50,511,255 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 421,569 shares of Entegris, Inc.. This represents a change in shares of 2.20% during the quarter.

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)
2026-05-12 2026-03-31 13F ENTEGRIS INC COM COM 29362U104 430,837 9,268 2.20 50,511 42.22 0.0432
2026-02-13 2025-12-31 13F ENTEGRIS INC COM COM 29362U104 421,569 -6,665 -1.56 35,517 -10.30 0.0287
2025-11-06 2025-09-30 13F ENTEGRIS INC COM COM 29362U104 428,234 -7,078 -1.63 39,594 12.78 0.0318
2025-08-12 2025-06-30 13F ENTEGRIS INC COM COM 29362U104 435,312 -26,850 -5.81 35,108 -13.16 0.0301
2025-05-29 2025-03-31 13F/A-1 ENTEGRIS INC COM COM 29362U104 462,162 256,710 124.95 40,430 98.65 0.0378
2025-04-08 2025-03-31 13F ENTEGRIS INC COM COM 29362U104 462,162 256,710 40,430 0.0378
2025-05-29 2024-12-31 13F/A-1 ENTEGRIS INC COM COM 29362U104 205,452 -4,724 -2.25 20,352 -13.95 0.0182
2025-01-30 2024-12-31 13F ENTEGRIS INC COM COM 29362U104 205,452 -4,724 20,352 0.0182
2024-11-12 2024-09-30 13F ENTEGRIS INC COM COM 29362U104 210,176 329 0.16 23,651 -16.76 0.0213
2024-08-01 2024-06-30 13F ENTEGRIS INC COM COM 29362U104 209,847 29,435 16.32 28,413 12.06 0.0267
2024-05-09 2024-03-31 13F ENTEGRIS INC COM COM 29362U104 180,412 -851 -0.47 25,355 16.75 0.0243
2024-02-08 2023-12-31 13F ENTEGRIS INC COM COM 29362U104 181,263 64 0.04 21,719 27.63 0.0228
2023-11-09 2023-09-30 13F ENTEGRIS INC COM COM 29362U104 181,199 -2,806 -1.52 17,016 -16.55 0.0198
2023-08-08 2023-06-30 13F ENTEGRIS INC COM COM 29362U104 184,005 2,106 1.16 20,391 145,550.00 0.0228
2023-05-11 2023-03-31 13F ENTEGRIS INC COM COM 29362U104 181,899 13,646 8.11 15 -99.87 0.0184
2023-02-14 2022-12-31 13F ENTEGRIS INC COM COM 29362U104 168,253 8,242 5.15 11,036 -16.92 0.0148
2022-11-10 2022-09-30 13F ENTEGRIS INC COM COM 29362U104 160,011 20,595 14.77 13,284 3.43 0.0198
2022-08-11 2022-06-30 13F ENTEGRIS INC COM COM 29362U104 139,416 11,541 9.03 12,844 -23.48 0.0187
2022-05-12 2022-03-31 13F ENTEGRIS INC COM COM 29362U104 127,875 -6,400 -4.77 16,785 -9.80 0.0216
2022-02-10 2021-12-31 13F ENTEGRIS INC COM COM 29362U104 134,275 3,221 2.46 18,608 12.78 0.0228
2021-11-12 2021-09-30 13F ENTEGRIS INC COM COM 29362U104 131,054 -1,344 -1.02 16,500 1.35 0.0223
2021-08-05 2021-06-30 13F ENTEGRIS INC COM COM 29362U104 132,398 -9,357 -6.60 16,281 2.73 0.0214
2021-05-06 2021-03-31 13F ENTEGRIS INC COM COM 29362U104 141,755 -7,619 -5.10 15,848 10.40 0.0215
2021-02-10 2020-12-31 13F ENTEGRIS INC COM COM 29362U104 149,374 -2,438 -1.61 14,355 27.19 0.0198
2020-11-12 2020-09-30 13F ENTEGRIS INC COM COM 29362U104 151,812 -6,791 -4.28 11,286 20.50 0.0177
2020-08-13 2020-06-30 13F ENTEGRIS INC COM COM 29362U104 158,603 21,504 15.69 9,366 52.59 0.0156
2020-05-06 2020-03-31 13F ENTEGRIS INC COM COM 29362U104 137,099 -1,125 -0.81 6,138 -11.35 0.0129
2020-02-05 2019-12-31 13F ENTEGRIS INC COM COM 29362U104 138,224 2,712 2.00 6,924 8.58 0.0116
2019-10-23 2019-09-30 13F ENTEGRIS INC COM COM 29362U104 135,512 -133 -0.10 6,377 25.98 0.0117
2019-08-14 2019-06-30 13F ENTEGRIS INC COM COM 29362U104 135,645 -62,594 -31.58 5,062 -28.45 0.0095
2019-05-01 2019-03-31 13F ENTEGRIS INC COM COM 29362U104 198,239 -1,814 -0.91 7,075 26.79 0.0137
2019-01-31 2018-12-31 13F ENTEGRIS INC COM COM 29362U104 200,053 61,784 44.68 5,580 39.40 0.0121
2018-11-07 2018-09-30 13F ENTEGRIS INC COM COM 29362U104 138,269 -9,050 -6.14 4,003 -19.84 0.0077
2018-08-06 2018-06-30 13F ENTEGRIS INC COM COM 29362U104 147,319 3,312 2.30 4,994 -0.34 0.0101
2018-05-02 2018-03-31 13F ENTEGRIS INC COM COM 29362U104 144,007 -2,076 -1.42 5,011 12.66 0.0105
2018-02-09 2017-12-31 13F ENTEGRIS INC COM COM 29362U104 146,083 -25,125 -14.68 4,448 -9.94 0.0090
2017-11-06 2017-09-30 13F ENTEGRIS INC COM COM 29362U104 171,208 2,348 1.39 4,939 33.27 0.0107
2017-08-02 2017-06-30 13F ENTEGRIS INC COM COM 29362U104 168,860 -9,517 -5.34 3,706 -11.21 0.0085
2017-05-02 2017-03-31 13F ENTEGRIS INC COM COM 29362U104 178,377 7,291 4.26 4,174 36.32 0.0097
2017-01-27 2016-12-31 13F ENTEGRIS INC COM COM 29362U104 171,086 3,808 2.28 3,062 5.08 0.0078
2016-11-08 2016-09-30 13F ENTEGRIS INC COM COM 29362U104 167,278 3,270 1.99 2,914 22.80 0.0080
2016-08-11 2016-06-30 13F ENTEGRIS INC COM COM 29362U104 164,008 -14,154 -7.94 2,373 -2.22 0.0070
2016-05-02 2016-03-31 13F ENTEGRIS INC USD. COM 29362U104 178,162 8,275 4.87 2,427 7.68 0.0075
2016-02-03 2015-12-31 13F ENTEGRIS INC USD. COM 29362U104 169,887 5,820 3.55 2,254 4.16 0.0073
2015-11-04 2015-09-30 13F ENTEGRIS INC USD. COM 29362U104 164,067 8,124 5.21 2,164 -4.75 0.0074
2015-08-04 2015-06-30 13F ENTEGRIS INC USD. COM 29362U104 155,943 -3,720 -2.33 2,272 3.93 0.0072
2015-05-12 2015-03-31 13F ENTEGRIS INC USD. COM 29362U104 159,663 11,550 7.80 2,186 11.70 0.0063
2015-02-06 2014-12-31 13F ENTEGRIS INC USD. COM 29362U104 148,113 -5,326 -3.47 1,957 10.88 0.0057
2014-11-12 2014-09-30 13F ENTEGRIS INC USD. COM 29362U104 153,439 -4,930 -3.11 1,765 -18.93 0.0053
2014-08-06 2014-06-30 13F ENTEGRIS INC USD. COM 29362U104 158,369 -29,663 -15.78 2,177 -4.39 0.0064
2014-05-06 2014-03-31 13F ENTEGRIS INC USD. COM 29362U104 188,032 -1,290 -0.68 2,277 3.69 0.0068
2014-02-03 2013-12-31 13F ENTEGRIS INC USD. COM 29362U104 189,322 -11,630 -5.79 2,196 7.65 0.0065
2013-11-05 2013-09-30 13F ENTEGRIS INC USD. COM 29362U104 200,952 -9,726 -4.62 2,040 3.13 0.0063
2013-08-07 2013-06-30 13F ENTEGRIS INC USD. COM 29362U104 210,678 210,678 1,978 0.0064
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.