Entegris, Inc.
US ˙ NasdaqGS ˙ US29362U1043

SecurityENTG / Entegris, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership1,315,082 shares
Latest Disclosed Value $ 154,180,214
Citigroup Inc reports 37.88% increase in ownership of ENTG / Entegris, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 1,315,082 shares of Entegris, Inc. (US:ENTG) valued at $154,180,214 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 953,811 shares of Entegris, Inc.. This represents a change in shares of 37.88% during the quarter. The current value of the position is $184,545,457 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 ENTEGRIS COM 29362U104 1,315,082 361,271 37.88 154,180 91.87 0.0657
2026-02-13 2025-12-31 13F ENTEGRIS COM 29362U104 953,811 231,792 32.10 80,359 20.37 0.0355
2025-11-10 2025-09-30 13F ENTEGRIS COM 29362U104 722,019 -318,330 -30.60 66,758 -20.44 0.0298
2025-08-11 2025-06-30 13F ENTEGRIS COM 29362U104 1,040,349 283,402 37.44 83,904 26.71 0.0412
2025-05-12 2025-03-31 13F ENTEGRIS COM 29362U104 756,947 -737,210 -49.34 66,218 -55.26 0.0338
2025-02-12 2024-12-31 13F ENTEGRIS COM 29362U104 1,494,157 525,262 54.21 148,011 35.75 0.0878
2024-11-12 2024-09-30 13F ENTEGRIS COM 29362U104 968,895 -11,013 -1.12 109,030 -17.82 0.0631
2024-08-12 2024-06-30 13F ENTEGRIS COM 29362U104 979,908 210,591 27.37 132,680 22.72 0.0850
2024-05-10 2024-03-31 13F ENTEGRIS COM 29362U104 769,317 432,093 128.13 108,120 167.58 0.0710
2024-02-09 2023-12-31 13F ENTEGRIS COM 29362U104 337,224 -51,913 -13.34 40,406 10.57 0.0285
2023-12-06 2023-09-30 13F/A-1 ENTEGRIS COM 29362U104 389,137 -13,789 -3.42 36,544 -18.16 0.0273
2023-11-09 2023-09-30 13F ENTEGRIS COM 29362U104 389,137 -13,789 36,544 0.0109
2023-08-10 2023-06-30 13F ENTEGRIS COM 29362U104 402,926 93,549 30.24 44,652 75.99 0.0293
2023-05-11 2023-03-31 13F ENTEGRIS COM 29362U104 309,377 76,979 33.12 25,372 66.46 0.0178
2023-02-09 2022-12-31 13F ENTEGRIS COM 29362U104 232,398 -108,924 -31.91 15,243 -46.21 0.0121
2022-11-10 2022-09-30 13F ENTEGRIS COM 29362U104 341,322 -32,090 -8.59 28,337 -17.63 0.0203
2022-08-10 2022-06-30 13F ENTEGRIS COM 29362U104 373,412 -87,351 -18.96 34,402 -43.12 0.0256
2022-05-12 2022-03-31 13F ENTEGRIS COM 29362U104 460,763 29,829 6.92 60,480 1.27 0.0368
2022-02-10 2021-12-31 13F ENTEGRIS COM 29362U104 430,934 -228,031 -34.60 59,720 -28.02 0.0320
2021-11-10 2021-09-30 13F ENTEGRIS COM 29362U104 658,965 268,396 68.72 82,963 72.74 0.0490
2021-08-10 2021-06-30 13F ENTEGRIS COM 29362U104 390,569 87,966 29.07 48,029 41.96 0.0289
2021-05-13 2021-03-31 13F ENTEGRIS COM 29362U104 302,603 134,030 79.51 33,832 108.85 0.0219
2021-02-11 2020-12-31 13F ENTEGRIS COM 29362U104 168,573 -36,440 -17.77 16,199 6.29 0.0096
2020-11-12 2020-09-30 13F ENTEGRIS COM 29362U104 205,013 30,915 17.76 15,241 48.24 0.0099
2020-08-12 2020-06-30 13F ENTEGRIS COM 29362U104 174,098 60,991 53.92 10,281 103.06 0.0080
2020-05-12 2020-03-31 13F ENTEGRIS COM 29362U104 113,107 32,072 39.58 5,063 24.74 0.0046
2020-02-12 2019-12-31 13F ENTEGRIS COM 29362U104 81,035 -1,346 -1.63 4,059 4.69 0.0029
2019-11-08 2019-09-30 13F ENTEGRIS COM 29362U104 82,381 -14,432 -14.91 3,877 7.31 0.0031
2019-08-12 2019-06-30 13F ENTEGRIS COM 29362U104 96,813 72,934 305.43 3,613 324.06 0.0029
2019-05-13 2019-03-31 13F ENTEGRIS COM 29362U104 23,879 -95,249 -79.96 852 -74.37 0.0008
2019-02-12 2018-12-31 13F ENTEGRIS COM 29362U104 119,128 21,810 22.41 3,324 18.00 0.0034
2018-11-13 2018-09-30 13F ENTEGRIS COM 29362U104 97,318 65,448 205.36 2,817 160.59 0.0025
2018-08-10 2018-06-30 13F ENTEGRIS COM 29362U104 31,870 -77,909 -70.97 1,081 -71.70 0.0010
2018-05-11 2018-03-31 13F ENTEGRIS COM 29362U104 109,779 95,011 643.36 3,820 750.78 0.0031
2018-02-12 2017-12-31 13F ENTEGRIS COM 29362U104 14,768 1,431 10.73 449 16.93 0.0004
2017-11-13 2017-09-30 13F ENTEGRIS COM 29362U104 13,337 3,744 39.03 384 82.86 0.0003
2017-08-11 2017-06-30 13F ENTEGRIS COM 29362U104 9,593 -14,400 -60.02 210 -62.57 0.0002
2017-05-12 2017-03-31 13F ENTEGRIS COM 29362U104 23,993 -127,308 -84.14 561 -79.28 0.0005
2017-02-10 2016-12-31 13F ENTEGRIS COM 29362U104 151,301 142,245 1,570.73 2,708 1,624.84 0.0024
2016-11-10 2016-09-30 13F ENTEGRIS COM 29362U104 9,056 -28,810 -76.08 157 -71.35 0.0001
2016-08-12 2016-06-30 13F ENTEGRIS COM 29362U104 37,866 -92,652 -70.99 548 -69.16 0.0006
2016-05-13 2016-03-31 13F ENTEGRIS COM 29362U104 130,518 66,302 103.25 1,777 108.81 0.0020
2016-02-12 2015-12-31 13F ENTEGRIS COM 29362U104 64,216 56,251 706.23 851 710.48 0.0008
2015-11-13 2015-09-30 13F ENTEGRIS COM 29362U104 7,965 -1,879 -19.09 105 -27.08 0.0001
2015-08-13 2015-06-30 13F ENTEGRIS COM 29362U104 9,844 -26,814 -73.15 144 -71.31 0.0001
2015-05-14 2015-03-31 13F ENTEGRIS COM 29362U104 36,658 -23,980 -39.55 502 -37.33 0.0005
2015-02-17 2014-12-31 13F ENTEGRIS COM 29362U104 60,638 50,771 514.55 801 608.85 0.0007
2014-11-14 2014-09-30 13F ENTEGRIS COM 29362U104 9,867 1,402 16.56 113 -3.42 0.0001
2014-08-14 2014-06-30 13F ENTEGRIS COM 29362U104 8,465 -41,702 -83.13 117 -80.76 0.0001
2014-05-15 2014-03-31 13F ENTEGRIS COM 29362U104 50,167 -39,824 -44.25 608 -41.76 0.0006
2014-02-14 2013-12-31 13F ENTEGRIS COM 29362U104 89,991 33,903 60.45 1,044 83.48 0.0009
2013-11-14 2013-09-30 13F ENTEGRIS COM 29362U104 56,088 -31,758 -36.15 569 -31.03 0.0005
2013-08-14 2013-06-30 13F ENTEGRIS COM 29362U104 87,846 87,846 825 0.0008
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.