Entegris, Inc.
MX ˙ BMV ˙ US29362U1043
SecurityMX:ENTG / Entegris, Inc.
InstitutionMarshall Wace, Llp
Latest Disclosed Ownership402,113 shares
Latest Disclosed Value $ 47,143,730
Marshall Wace, Llp reports 2,077.59% increase in ownership of ENTG / Entegris, Inc.

On May 14, 2026 - Marshall Wace, Llp filed a 13F-HR form disclosing ownership of 402,113 shares of Entegris, Inc. (MX:ENTG) valued at $47,143,730 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 18,466 shares of Entegris, Inc.. This represents a change in shares of 2,077.59% 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)
2026-05-14 2026-03-31 13F ENTEGRIS COMMON STOCK 29362U104 402,113 383,647 2,077.59 47,144 2,931.70 0.0470
2026-02-13 2025-12-31 13F ENTEGRIS COMMON STOCK 29362U104 18,466 18,466 1,556 0.0014
2025-08-13 2025-06-30 13F ENTEGRIS COMMON STOCK 29362U104 0 -404,054 -100.00 0 -100.00
2025-05-15 2025-03-31 13F ENTEGRIS COMMON STOCK 29362U104 404,054 360,078 818.81 35,347 711.43 0.0449
2025-02-13 2024-12-31 13F ENTEGRIS COMMON STOCK 29362U104 43,976 -465,460 -91.37 4,356 -92.40 0.0052
2024-11-14 2024-09-30 13F ENTEGRIS COMMON STOCK 29362U104 509,436 198,603 63.89 57,327 36.21 0.0698
2024-08-14 2024-06-30 13F ENTEGRIS COMMON STOCK 29362U104 310,833 310,833 42,087 0.0562
2024-02-14 2023-12-31 13F ENTEGRIS COMMON STOCK 29362U104 0 -196,850 -100.00 0 -100.00
2023-11-14 2023-09-30 13F ENTEGRIS COMMON STOCK 29362U104 196,850 -132,176 -40.17 18,486 -49.30 0.0374
2023-08-14 2023-06-30 13F ENTEGRIS COMMON STOCK 29362U104 329,026 88,901 37.02 36,463 85.16 0.0712
2023-05-15 2023-03-31 13F ENTEGRIS COMMON STOCK 29362U104 240,125 -474,011 -66.38 19,693 -57.96 0.0418
2023-02-14 2022-12-31 13F ENTEGRIS COMMON STOCK 29362U104 714,136 -183,099 -20.41 46,840 -37.12 0.1054
2022-11-14 2022-09-30 13F ENTEGRIS COMMON STOCK 29362U104 897,235 -277,379 -23.61 74,491 -31.17 0.1632
2022-08-15 2022-06-30 13F ENTEGRIS COMMON STOCK 29362U104 1,174,614 -14,597 -1.23 108,219 -30.67 0.2226
2022-05-16 2022-03-31 13F ENTEGRIS COMMON STOCK 29362U104 1,189,211 375,917 46.22 156,097 38.50 0.2956
2022-02-14 2021-12-31 13F ENTEGRIS COMMON STOCK 29362U104 813,294 810,146 25,735.26 112,707 28,361.36 0.2081
2021-11-15 2021-09-30 13F ENTEGRIS COMMON STOCK 29362U104 3,148 3,148 396 0.0016
2021-05-17 2021-03-31 13F ENTEGRIS COMMON STOCK 29362U104 0 -18,296 -100.00 0 -100.00
2021-02-16 2020-12-31 13F ENTEGRIS COMMON STOCK 29362U104 18,296 14,960 448.44 1,759 609.27 0.0095
2020-11-16 2020-09-30 13F ENTEGRIS COMMON STOCK 29362U104 3,336 -42,195 -92.67 248 -90.78 0.0016
2020-08-13 2020-06-30 13F ENTEGRIS COMMON STOCK 29362U104 45,531 -167,258 -78.60 2,689 -71.77 0.0188
2020-05-15 2020-03-31 13F ENTEGRIS COMMON STOCK 29362U104 212,789 212,789 9,527 0.0952
2020-02-14 2019-12-31 13F ENTEGRIS COMMON STOCK 29362U104 0 -81,444 -100.00 0 -100.00
2019-11-14 2019-09-30 13F ENTEGRIS COMMON STOCK 29362U104 81,444 -66,090 -44.80 3,833 -30.39 0.0301
2019-08-14 2019-06-30 13F ENTEGRIS COMMON STOCK 29362U104 147,534 -128,224 -46.50 5,506 -44.06 0.0453
2019-05-29 2019-03-31 13F/A-1 ENTEGRIS COMMON STOCK 29362U104 275,758 275,758 9,842 0.0925
2019-05-14 2019-03-31 13F ENTEGRIS COMMON STOCK 29362U104 275,758 275,758 9,842
2018-08-14 2018-06-30 13F ENTEGRIS COMMON STOCK 29362U104 0 -14,729 -100.00 0 -100.00
2018-05-15 2018-03-31 13F ENTEGRIS COMMON STOCK 29362U104 14,729 14,729 513 0.0213
2014-11-13 2014-09-30 13F ENTEGRIS COMMON STOCK 29362U104 0 -245,676 -100.00 0 -100.00
2014-08-14 2014-06-30 13F ENTEGRIS COMMON STOCK 29362U104 245,676 245,676 3,377 0.0497
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.