Metallus Inc.
US ˙ NYSE ˙ US8873991033

SecurityMTUS / Metallus Inc.
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership1,019,546 shares
Latest Disclosed Value $ 16,659,382
Renaissance Technologies Llc reports 3.73% decrease in ownership of MTUS / Metallus Inc.

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 1,019,546 shares of Metallus Inc. (US:MTUS) valued at $16,659,382 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,059,033 shares of Metallus Inc.. This represents a change in shares of -3.73% during the quarter. The current value of the position is $20,044,274 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 METALLUS COM 887399103 1,019,546 -39,487 -3.73 16,659 -8.33 0.0261
2026-02-12 2025-12-31 13F METALLUS COM 887399103 1,059,033 90,200 9.31 18,173 13.48 0.0282
2025-11-13 2025-09-30 13F METALLUS COM 887399103 968,833 300 0.03 16,015 7.30 0.0211
2025-08-13 2025-06-30 13F METALLUS COM 887399103 968,533 -4,600 -0.47 14,925 14.80 0.0199
2025-05-14 2025-03-31 13F METALLUS COM 887399103 973,133 -44,900 -4.41 13,001 -9.61 0.0197
2025-02-13 2024-12-31 13F METALLUS COM 887399103 1,018,033 -22,100 -2.12 14,385 -6.75 0.0213
2024-11-13 2024-09-30 13F METALLUS COM 887399103 1,040,133 48,300 4.87 15,425 -23.27 0.0232
2024-08-09 2024-06-30 13F METALLUS COM 887399103 991,833 37,200 3.90 20,104 95,633.33 0.0341
2024-05-13 2024-03-31 13F METALLUS COM 887399103 954,633 1,000 0.10 21 -4.55 0.0334
2024-02-13 2023-12-31 13F TIMKENSTEEL COM 887399103 953,633 61,600 6.91 22 15.79 0.0346
2023-11-14 2023-09-30 13F TIMKENSTEEL COM 887399103 892,033 44,187 5.21 19 5.56 0.0330
2023-08-11 2023-06-30 13F TIMKENSTEEL COM 887399103 847,846 54,000 6.80 18 28.57 0.0264
2023-05-12 2023-03-31 13F TIMKENSTEEL COM 887399103 793,846 76,000 10.59 15 7.69 0.0193
2023-02-13 2022-12-31 13F TIMKENSTEEL COM 887399103 717,846 2,500 0.35 13 -99.88 0.0178
2022-11-14 2022-09-30 13F TIMKENSTEEL COM 887399103 715,346 8,900 1.26 10,723 -18.88 0.0152
2022-08-12 2022-06-30 13F TIMKENSTEEL COM 887399103 706,446 169,000 31.45 13,218 12.41 0.0156
2022-05-13 2022-03-31 13F TIMKENSTEEL COM 887399103 537,446 125,881 30.59 11,759 73.16 0.0138
2022-02-11 2021-12-31 13F TIMKENSTEEL COM 887399103 411,565 124,119 43.18 6,791 80.61 0.0084
2021-11-12 2021-09-30 13F TIMKENSTEEL COM 887399103 287,446 -83,000 -22.41 3,760 -28.27 0.0049
2021-08-13 2021-06-30 13F TIMKENSTEEL COM 887399103 370,446 -211,700 -36.37 5,242 -23.36 0.0065
2021-05-13 2021-03-31 13F TIMKENSTEEL COM 887399103 582,146 16,200 2.86 6,840 158.80 0.0085
2021-02-10 2020-12-31 13F TIMKENSTEEL COM 887399103 565,946 267,677 89.74 2,643 149.58 0.0029
2020-11-13 2020-09-30 13F TIMKENSTEEL COM 887399103 298,269 226,123 313.42 1,059 276.87 0.0011
2020-08-13 2020-06-30 13F TIMKENSTEEL COM 887399103 72,146 48,746 208.32 281 269.74 0.0002
2020-05-14 2020-03-31 13F TIMKENSTEEL COM 887399103 23,400 23,400 -67.57 76 -72.95 0.0001
2020-02-12 2019-12-31 13F TIMKENSTEEL COM 887399103 0 -19,800 -100.00 0 -100.00
2019-11-13 2019-09-30 13F TIMKENSTEEL COM 887399103 19,800 -74,138 -78.92 125 -83.64 0.0001
2019-08-12 2019-06-30 13F TIMKENSTEEL COM 887399103 93,938 93,938 764 0.0007
2018-11-13 2018-09-30 13F TIMKENSTEEL COM 887399103 0 -69,600 -100.00 0 -100.00
2018-08-13 2018-06-30 13F/A-1 TIMKENSTEEL COM 887399103 69,600 -18,700 -21.18 1,138 -15.14 0.0012
2018-08-13 2018-06-30 13F TIMKENSTEEL COM 887399103 88,300 1,341
2018-05-14 2018-03-31 13F TIMKENSTEEL COM 887399103 88,300 -129,090 -59.38 1,341 -59.39 0.0015
2018-02-13 2017-12-31 13F TIMKENSTEEL COM 887399103 217,390 187,590 629.50 3,302 571.14 0.0036
2017-11-13 2017-09-30 13F TIMKENSTEEL COM 887399103 29,800 29,800 -86.29 492 -85.10 0.0006
2017-05-12 2017-03-31 13F TIMKENSTEEL COM 887399103 0 -67,200 -100.00 0 -100.00
2017-02-13 2016-12-31 13F TIMKENSTEEL COM 887399103 67,200 -231,500 -77.50 1,040 -66.68 0.0016
2016-11-14 2016-09-30 13F TIMKENSTEEL COM 887399103 298,700 -95,800 -24.28 3,121 -17.76 0.0055
2016-08-12 2016-06-30 13F TIMKENSTEEL COM 887399103 394,500 -509,900 -56.38 3,795 -53.89 0.0072
2016-05-13 2016-03-31 13F TIMKENSTEEL COM 887399103 904,400 265,800 41.62 8,230 53.80 0.0156
2016-02-11 2015-12-31 13F TIMKENSTEEL COM 887399103 638,600 601,100 1,602.93 5,351 1,308.16 0.0117
2015-11-12 2015-09-30 13F TIMKENSTEEL COM 887399103 37,500 -137,095 -78.52 380 -91.94 0.0009
2015-08-14 2015-06-30 13F TIMKENSTEEL COM 887399103 174,595 -73,905 -29.74 4,712 -28.37 0.0107
2015-05-13 2015-03-31 13F TIMKENSTEEL COM 887399103 248,500 248,500 6,578 0.0140
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.