Metallus Inc.
US ˙ NYSE ˙ US8873991033

SecurityMTUS / Metallus Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership217,769 shares
Latest Disclosed Value $ 3,736,906
Sei Investments Co ownership in MTUS / Metallus Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 217,769 shares of Metallus Inc. (US:MTUS) valued at $3,736,916 USD as of December 31, 2025. The entity filed a previous 13F-HR on August 11, 2023 disclosing 0 shares of Metallus Inc.. The current value of the position is $4,318,359 USD.

Sei Investments Co has a history of taking positions in derivatives of the underlying security (MTUS) in the form of stock options.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MTUS / Metallus Inc. Historical Put/Call Ratio
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)
2026-02-13 2025-12-31 13F METALLUS COM 887399103 217,769 217,769 3,737 0.0037
2023-08-11 2023-06-30 13F TIMKENSTEEL COM 887399103 0 -11,223 -100.00 0 -100.00
2023-05-12 2023-03-31 13F TIMKENSTEEL COM 887399103 11,223 11,223 206 0.0004
2022-11-14 2022-09-30 13F TIMKENSTEEL COM 887399103 0 -23,430 -100.00 0 -100.00
2022-08-15 2022-06-30 13F TIMKENSTEEL COM 887399103 23,430 -57,821 -71.16 438 -75.37 0.0009
2022-05-13 2022-03-31 13F TIMKENSTEEL COM 887399103 81,251 6,576 8.81 1,778 44.32 0.0036
2022-02-14 2021-12-31 13F TIMKENSTEEL COM 887399103 74,675 -9,731 -11.53 1,232 11.59 0.0023
2021-11-12 2021-09-30 13F TIMKENSTEEL COM 887399103 84,406 20,546 32.17 1,104 22.12 0.0023
2021-08-06 2021-06-30 13F TIMKENSTEEL COM 887399103 63,860 63,860 904 0.0020
2019-08-14 2019-06-30 13F TIMKENSTEEL COM 887399103 0 -35 -100.00 0 -100.00 0.0000
2019-05-15 2019-03-31 13F TIMKENSTEEL COM 887399103 35 -282 -88.96 0 -100.00
2019-02-13 2018-12-31 13F TIMKENSTEEL COM 887399103 317 0 0.00 5 0.00 0.0000
2018-11-08 2018-09-30 13F TIMKENSTEEL COM 887399103 317 -490 -60.72 5 -61.54 0.0000
2018-08-03 2018-06-30 13F TIMKENSTEEL COM 887399103 807 282 53.71 13 62.50 0.0000
2018-05-11 2018-03-31 13F TIMKENSTEEL COM 887399103 525 0 0.00 8 0.00 0.0000
2018-02-08 2017-12-31 13F TIMKENSTEEL COM 887399103 525 295 128.26 8 100.00 0.0000
2017-11-06 2017-09-30 13F TIMKENSTEEL COM 887399103 230 -4 -1.71 4 0.00 0.0000
2017-07-31 2017-06-30 13F TIMKENSTEEL COM 887399103 234 13 5.88 4 0.00 0.0000
2017-05-05 2017-03-31 13F TIMKENSTEEL COM 887399103 221 -44,350 -99.50 4 -99.42 0.0000
2017-02-02 2016-12-31 13F TIMKENSTEEL COM 887399103 44,571 -26,061 -36.90 690 -6.50 0.0033
2016-11-04 2016-09-30 13F TIMKENSTEEL COM 887399103 70,632 -182,849 -72.14 738 -69.73 0.0037
2016-08-11 2016-06-30 13F TIMKENSTEEL COM 887399103 253,481 253,268 118,905.16 2,438 121,800.00 0.0146
2016-05-10 2016-03-31 13F/A-1 TIMKENSTEEL COM 887399103 213 -1,433 -87.06 2 -84.62 0.0000
2016-02-03 2015-12-31 13F TIMKENSTEEL COM 887399103 1,646 1,418 621.93 13 550.00 0.0001
2015-11-02 2015-09-30 13F/A-1 TIMKENSTEEL COM 887399103 228 186 442.86 2 100.00 0.0000
2015-10-30 2015-09-30 13F TIMKENSTEEL COM 887399103 228 4
2015-08-07 2015-06-30 13F/A-1 TIME WARNER CABLE PUT 887399103 0 -689 -100.00 0 -100.00
2015-08-07 2015-06-30 13F/A-1 TIMKENSTEEL COM 887399103 42 -647 -93.90 1 -88.89 0.0000
2015-08-04 2015-06-30 13F TIMKENSTEEL COM 887399103 42 -647 1 0.0000
2015-05-14 2015-03-31 13F/A-1 TIMKENSTEEL COM 887399103 689 -4,025 -85.38 9 -94.55 0.0001
2015-05-01 2015-03-31 13F TIME WARNER CABLE PUT 887399103 689 689 9 0.0001
2015-02-10 2014-12-31 13F TIMKENSTEEL COM 887399103 4,714 4,714 165 0.0015
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2015-08-07 2015-06-30 13F/A TIME WARNER CABLE PUT 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-01 2015-03-31 13F TIME WARNER CABLE PUT 689 9 n/a n/a n/a
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.