Mativ Holdings, Inc.
US ˙ NYSE

SecurityMATV / Mativ Holdings, Inc.
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership78,100 shares
Latest Disclosed Value $ 679,470
Renaissance Technologies Llc reports 36.78% increase in ownership of MATV / Mativ Holdings, Inc.

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 78,100 shares of Mativ Holdings, Inc. (US:MATV) valued at $679,470 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 57,100 shares of Mativ Holdings, Inc.. This represents a change in shares of 36.78% during the quarter. The current value of the position is $581,064 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)
2026-05-14 2026-03-31 13F MATIV HOLDINGS COM 808541106 78,100 21,000 36.78 679 -2.02 0.0011
2026-02-12 2025-12-31 13F MATIV HOLDINGS COM 808541106 57,100 20,200 54.74 694 66.19 0.0011
2025-11-13 2025-09-30 13F MATIV HOLDINGS COM 808541106 36,900 36,900 417 0.0006
2025-08-13 2025-06-30 13F MATIV HOLDINGS COM 808541106 0 -233,012 -100.00 0 -100.00
2025-05-14 2025-03-31 13F MATIV HOLDINGS COM 808541106 233,012 203,100 678.99 1,452 345.09 0.0022
2025-02-13 2024-12-31 13F MATIV HOLDINGS COM 808541106 29,912 29,912 326 0.0005
2024-11-13 2024-09-30 13F MATIV HOLDINGS COM 808541106 0 -10,912 -100.00 0 -100.00
2024-08-09 2024-06-30 13F MATIV HOLDINGS COM 808541106 10,912 10,912 185 0.0003
2024-05-13 2024-03-31 13F MATIV HOLDINGS COM 808541106 0 -49,312 -100.00 0 0.0000
2024-02-13 2023-12-31 13F MATIV HOLDINGS COM 808541106 49,312 49,312 1 0.0012
2023-11-14 2023-09-30 13F MATIV HOLDINGS COM 808541106 0 -49,922 -100.00 0 0.0000
2023-08-11 2023-06-30 13F MATIV HOLDINGS COM 808541106 49,922 5,610 12.66 1 0.0011
2023-05-12 2023-03-31 13F MATIV HOLDINGS COM 808541106 44,312 -50,700 -53.36 1 -100.00 0.0013
2023-02-13 2022-12-31 13F MATIV HOLDINGS COM 808541106 95,012 -30,760 -24.46 2 -99.96 0.0027
2022-11-14 2022-09-30 13F MATIV HOLDINGS COM 808541106 125,772 125,772 2,777 0.0039
2022-08-12 2022-06-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 0 -11,464 -100.00 0 -100.00
2022-05-13 2022-03-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 11,464 -86,536 -88.30 315 -89.25 0.0004
2022-02-11 2021-12-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 98,000 49,100 100.41 2,930 72.86 0.0036
2021-11-12 2021-09-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 48,900 -48,800 -49.95 1,695 -57.03 0.0022
2021-08-13 2021-06-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 97,700 35,102 56.08 3,945 28.71 0.0049
2021-05-13 2021-03-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 62,598 -33,500 -34.86 3,065 -20.68 0.0038
2021-02-10 2020-12-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 96,098 -86,600 -47.40 3,864 -30.40 0.0042
2020-11-13 2020-09-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 182,698 -178,400 -49.40 5,552 -53.98 0.0055
2020-08-13 2020-06-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 361,098 -221,000 -37.97 12,064 -25.50 0.0104
2020-05-14 2020-03-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 582,098 -120,200 -17.12 16,194 -45.08 0.0157
2020-02-13 2019-12-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 702,298 121,935 21.01 29,489 35.71 0.0227
2019-11-13 2019-09-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 580,363 67,763 13.22 21,729 27.76 0.0184
2019-08-12 2019-06-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 512,600 125,300 32.35 17,008 13.42 0.0150
2019-05-14 2019-03-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 387,300 -102,400 -20.91 14,996 22.25 0.0136
2019-02-12 2018-12-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 489,700 -59,800 -10.88 12,267 -41.73 0.0134
2018-11-13 2018-09-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 549,500 -54,000 -8.95 21,051 -20.22 0.0216
2018-08-13 2018-06-30 13F/A-1 SCHWEITZER-MAUDUIT INTL COM 808541106 603,500 -85,200 -12.37 26,385 -2.14 0.0288
2018-08-13 2018-06-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 688,700 26,963
2018-05-14 2018-03-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 688,700 55,500 8.77 26,963 -6.12 0.0295
2018-02-13 2017-12-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 633,200 32,900 5.48 28,722 15.41 0.0317
2017-11-13 2017-09-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 600,300 6,900 1.16 24,888 12.66 0.0293
2017-08-11 2017-06-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 593,400 28,100 4.97 22,092 -5.65 0.0282
2017-05-12 2017-03-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 565,300 700 0.12 23,415 -8.91 0.0327
2017-02-13 2016-12-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 564,600 26,500 4.92 25,706 23.89 0.0407
2016-11-14 2016-09-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 538,100 37,500 7.49 20,749 17.48 0.0367
2016-08-12 2016-06-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 500,600 -63,800 -11.30 17,661 -0.60 0.0336
2016-05-13 2016-03-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 564,400 86,100 18.00 17,767 -11.54 0.0338
2016-02-11 2015-12-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 478,300 -46,883 -8.93 20,084 11.23 0.0438
2015-11-12 2015-09-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 525,183 124,883 31.20 18,056 13.10 0.0431
2015-08-14 2015-06-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 400,300 19,400 5.09 15,964 -9.13 0.0364
2015-05-13 2015-03-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 380,900 -51,000 -11.81 17,567 -3.84 0.0374
2015-02-13 2014-12-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 431,900 -87,600 -16.86 18,269 -14.87 0.0441
2014-11-12 2014-09-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 519,500 -67,200 -11.45 21,461 -16.22 0.0588
2014-08-13 2014-06-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 586,700 -77,600 -11.68 25,615 -9.47 0.0597
2014-05-14 2014-03-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 664,300 163,800 32.73 28,293 9.83 0.0679
2014-02-14 2013-12-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 500,500 -12,400 -2.42 25,761 -17.02 0.0617
2013-11-13 2013-09-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 512,900 23,300 4.76 31,046 27.13 0.0753
2013-08-12 2013-06-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 489,600 489,600 24,421 0.0640
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.