Metallus Inc. (MTUS) Ownership

NYSE: MTUSTop holders, insider trades and short interest.

MTUS ownership summary

as of October 18, 2026
Institutions
87.1%
of shares outstanding
Insiders
14.27%
of shares outstanding
Shares outstanding
41.4M
Float
36.0M
shares available to trade
Short interest
6.82%
2.0M shares short
Days to cover
5.88
short interest up 5.0% vs prior month
  • Institutions 87.06%
  • Insiders 14.27%

MTUS top institutional holders

20 largest
Metallus Inc. top institutional holders
#Holder% of sharesSharesValueChangeReported
1BlackRock Inc14.06%5.8M$119.8M+171,305 (+3.0%)June 30, 2026
2Dimensional Fund Advisors, Inc.6.18%2.6M$52.7M+14,502 (+0.6%)June 30, 2026
3State Street Corp5.82%2.4M$49.6M−387,080 (−13.8%)June 30, 2026
4MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.4.84%2.0M$41.3M+163,913 (+8.9%)June 30, 2026
5American Century Companies Inc4.04%1.7M$34.4M+13,333 (+0.8%)June 30, 2026
6Vanguard Capital Management, LLC3.78%1.6M$32.2M+7,779 (+0.5%)June 30, 2026
7Systematic Financial Management LP3.45%1.4M$29.4M+69,552 (+5.1%)June 30, 2026
8Vanguard Portfolio Management, LLC2.57%1.1M$21.9M−7,898 (−0.7%)June 30, 2026
9Royce & Associates, LP2.38%988K$20.3M+36,700 (+3.9%)June 30, 2026
10Geode Capital Management, LLC2.24%930K$19.1M+50,919 (+5.8%)June 30, 2026
11Renaissance Technologies Corp2.18%906K$18.6M−113,913 (−11.2%)June 30, 2026
12Ameriprise Financial Inc1.75%726K$14.9M+76,140 (+11.7%)June 30, 2026
13Charles Schwab Investment Management Inc1.63%675K$13.9M−136,133 (−16.8%)June 30, 2026
14Acadian Asset Management LLC1.54%639K$13.1M+624,374 (+4,409.7%)June 30, 2026
15Donald Smith & Co Inc1.47%609K$12.5M−463,224 (−43.2%)June 30, 2026
16OpenArc Corporate Advisory, LLC1.37%566K$11.6M+20,354 (+3.7%)June 30, 2026
17Two Sigma Investments LLC1.29%536K$11.0M−14,416 (−2.6%)June 30, 2026
18Morgan Stanley - Brokerage Accounts1.24%514K$10.6M+73,782 (+16.8%)June 30, 2026
19Amvescap Plc.1.14%474K$9.7M−18,250 (−3.7%)June 30, 2026
20Citadel Advisors Llc1.12%462K$9.5M+227,940 (+97.3%)June 30, 2026

Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 13 holders added 1.6M shares and 7 cut 1.1M.

MTUS top mutual fund and ETF holders

20 largest
Metallus Inc. top fund holders
#Holder% of sharesSharesValueChangeReported
1iShares Core S&P Small-Cap ETF5.18%2.1M$44.1M+552 (+0.0%)September 30, 2026
2Global X US Infrastructure Dev ETF5.13%2.1M$43.8M+14,940 (+0.7%)September 30, 2026
3Avantis US Small Cap Value ETF3.46%1.4M$29.5M—September 30, 2026
4Vanguard MStar Total Stk Mkt Idx Invest2.70%1.1M$23.0M—August 31, 2026
5Stt Strt®SPDR®S&P®Mtls &MngETF2.68%1.1M$22.8M+11,240 (+1.0%)September 30, 2026
6iShares Russell 2000 ETF2.26%937K$19.3M−10,816 (−1.1%)September 30, 2026
7DFA US Small Cap Value I1.54%637K$13.1M—August 31, 2026
8Columbia Small Cap Value Discv A1.14%473K$9.7M+3,000 (+0.6%)August 31, 2026
9Fidelity Small Cap Index0.96%399K$8.2M+3,793 (+1.0%)July 31, 2026
10iShares Russell 2000 Value ETF0.83%344K$7.1M+522 (+0.2%)September 30, 2026
11State Street SPDR Port S&P 600 Sm CpETF0.80%331K$6.8M—September 30, 2026
12FTGF RY US SmCp Opp A USD Dis(A)0.77%319K$6.6M−9,795 (−3.0%)August 31, 2026
13Royce Small-Cap Opportunity Invmt0.76%315K$6.5M+24,735 (+8.5%)June 30, 2026
14DFA US Targeted Value I0.75%311K$6.4M—August 31, 2026
15iShares S&P Small-Cap 600 Value ETF0.74%305K$6.3M—September 30, 2026
16Royce Small-Cap Special Equity Invmt0.70%290K$6.0M—June 30, 2026
17Vanguard Tax-Managed Small Cap Adm0.67%276K$5.7M—August 31, 2026
18Dimensional US Small Cap Value ETF0.59%243K$5.0M—September 24, 2026
19Vanguard Strategic Equity Inv0.58%239K$4.9M−43,876 (−15.5%)June 30, 2026
20DFA US Small Cap I0.57%238K$4.9M—August 31, 2026

Funds report holdings monthly or quarterly; dates differ by fund.

MTUS insider transactions

latest 9
Metallus Inc. insider transactions
DateNameTransactionPriceSharesValue
2026-02-04Kristopher R WestbrooksSell$21.282,128$45,284
2026-02-03Kristopher R WestbrooksSell$21.032,951$62,060
2026-01-15Kristopher R WestbrooksSell$21.0093$1,953
2026-01-14Kristopher R WestbrooksSell$20.0610,932$219,296
2025-07-23Kristine C SyrvalinSell$18.007,500$135,000
2025-07-23Kristopher R WestbrooksSell$18.004,000$72,000
2025-07-23Nicholas A YacobozziSell$18.0021,974$395,532
2025-07-02Kristine C SyrvalinSell$16.007,500$120,000
2025-07-02Kristopher R WestbrooksSell$16.004,000$64,000

Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.

MTUS shares outstanding

Shares outstanding

Year-end shares outstanding, adjusted for splits.

Who owns MTUS

Institutional investors own 87.1% of Metallus's shares and insiders 14.27%. The largest holder is BlackRock Inc with 14.06% of the shares (5.8M), as of June 30, 2026. Among the top 20 institutions, 13 added shares and 7 reduced their stake in the latest filings. Short interest is 6.82% of the float, or 5.88 days of average trading volume. The share count fell 8.7% since 2014.

Related: MTUS analyst forecast, MTUS key metrics. See the MTUS stock overview for the latest quote and news.

MTUS ownership FAQ

Who owns the most Metallus stock?

The largest shareholders of Metallus are BlackRock Inc (14.06%), Dimensional Fund Advisors, Inc. (6.18%), State Street Corp (5.82%), MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. (4.84%), American Century Companies Inc (4.04%).

What percentage of Metallus is owned by institutions?

Institutions hold 87.1% of Metallus's shares outstanding; insiders hold 14.27%.

Which funds own Metallus?

The largest fund holders of Metallus are iShares Core S&P Small-Cap ETF (5.18%), Global X US Infrastructure Dev ETF (5.13%), Avantis US Small Cap Value ETF (3.46%), Vanguard MStar Total Stk Mkt Idx Invest (2.70%), Stt Strt®SPDR®S&P®Mtls &MngETF (2.68%).

What is Metallus's short interest?

2.0M shares of Metallus were sold short, 6.82% of the float; at the average daily volume it would take 5.88 days to cover.

Are insiders buying or selling Metallus?

Of the latest 9 reported insider transactions in Metallus (since July 2, 2025), 0 were purchases and 9 were sales.

How many shares of Metallus are outstanding?

Metallus has 41.4M shares outstanding, of which 36.0M are in the public float.

Steel: ownership