Metallus Inc.

MTUS

Exchange: NYSE
Industry: Steel Works, Blast Furnaces & Rolling Mills (Coke Ovens)
SEC CIK: 0001598428

SEC filings (opens in a new tab)

In the last 90 days, Metallus Inc. insiders filed 0 open-market purchases and 1 sale; 202 institutions reported holding it in 13F filings for Q2 2026, worth $666.6M in total; no superinvestor holds it.

Q3 2025 vs. Q2 2025

How the institutions holding Metallus Inc. changed between Q2 2025 and Q3 2025.

All holders in Q3 2025 All holders in Q2 2025

13F holders of MTUS: Q2 2025 compared with Q3 2025
Measure	Q2 2025	Of which not filed for Q3 2025	Q3 2025	Change
Holders	183	2	195	+14
Shares	35.4M	259	34.4M	−994.5K (−2.8%)
Value	$546.2M	$3.65K	$569.4M	+$23.2M (+4.3%)

2 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (28)

Institutions that held Metallus Inc. at the end of Q3 2025 but not at the end of Q2 2025.

Institutions new to MTUS in Q3 2025
Institution	Shares	Value	% of portfolio
CSM Advisors, LLC	267,100	$4.42M	0.12%
Squarepoint Ops LLC	108,400	$1.79M	0.00%
Arrowstreet Capital, Limited Partnership	99,194	$1.64M	0.00%
Orchard Capital Managment, LLC	90,618	$1.50M	1.98%
Jane Street Group, LLC	74,754	$1.24M	0.00%
Trexquant Investment LP	56,393	$932.2K	0.01%
HRT Financial LP	47,972	$792.0K	0.00%
Teacher Retirement System of Texas	31,078	$513.7K	0.00%
CenterBook Partners LP	25,751	$425.7K	0.02%
Algert Global LLC	23,580	$389.8K	0.01%
Verition Fund Management LLC	17,589	$290.7K	0.00%
Hodges Capital Management Inc.	13,010	$215.1K	0.02%
SG Americas Securities, LLC	12,505	$207.0K	0.00%
Acadian Asset Management LLC	7,328	$120.0K	0.00%
ISAM Funds (UK) Ltd	3,190	$52.7K	0.01%
Northwestern Mutual Wealth Management Co	2,000	$33.1K	0.00%
Quadrant Capital Group LLC	1,595	$26.4K	0.00%
Quarry LP	1,267	$20.9K	0.01%
State of Wyoming	684	$11.3K	0.00%
Optiver Holding B.V.	216	$3.57K	0.00%
Salomon & Ludwin, LLC	152	$2.56K	0.00%
First Horizon Corp	146	$2.41K	0.00%
Quest Partners LLC	146	$2.41K	0.00%
Rockefeller Capital Management L.P.	77	$1.27K	0.00%
Vermillion Wealth Management, Inc.	25	$413	0.00%
Your Advocates Ltd., LLP	12	$198	0.00%
Advisory Services Network, LLC	7	$116	0.00%
Cedar Mountain Advisors, LLC	7	$116	0.00%

Sold out (14)

Institutions that held Metallus Inc. at the end of Q2 2025 and filed for Q3 2025 without it.

Institutions that sold out of MTUS in Q3 2025
Institution	Shares, Q2 2025	Value, Q2 2025
Invenomic Capital Management LP	697,815	$10.8M
CastleKnight Management LP	89,200	$1.37M
Brevan Howard Capital Management LP	51,206	$789.1K
Maryland State Retirement & Pension System	11,226	$173.0K
Commonwealth Equity Services, LLC	10,987	$169.0K
Quantbot Technologies LP	7,111	$109.6K
Cape Investment Advisory, Inc.	600	$9.25K
Provenance Wealth Advisors, LLC	500	$7.71K
IFP Advisors, Inc	0	$4.07K
Skopos Labs, Inc.	231	$3.56K
Livelsberger Financial Advisory	182	$2.81K
Key Financial Inc	79	$1.22K
Bessemer Group Inc	36	$1.00K
GWM Advisors LLC	2	$31

Not filed for Q3 2025 yet (2)

Institutions that held Metallus Inc. at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MTUS in Q2 2025 that haven't filed for Q3 2025
Institution	Shares, Q2 2025	Value, Q2 2025
First Horizon Advisors, Inc.	237	$3.65K
PrairieView Partners, LLC	22	$0