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TRS · Trimas Corp · Holdings

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$39.70 +0.27 (+0.68%) At close · Oct 20
Market Cap
$1.41B
Shares
35.87M
Volume · Oct 20 345.36K Avg daily vol (3M) 360.45K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 208
Total Value: $1,344,352,343
Total Shares: 29,882,737
Showing 1–100 of 211 holdings by value · page 1 of 3

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 207 13F filers
Top Holder
8.5%
Sep 2023 → Jun 2026 · range 8.5% – 11.2%
of institutional value
Top 5
32.8%
Sep 2023 → Jun 2026 · range 32.8% – 41.2%
of institutional value
Top 10
51.3%
Sep 2023 → Jun 2026 · range 51.3% – 67.9%
of institutional value
HHI
347
Sep 2023 → Jun 2026 · range 347 – 533
Broadly held

Who Holds TRS

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 207 filers, like-for-like change -14.3%; actively managed books -15.4%; index-like books -11.2%.

Holder type Share Filers Change
Registered adviser 55.0% 111 +6.9%
Exempt adviser 0.1% 2 -40.1%
Adviser 2.0% 5 -43.8%
Bank 6.9% 14 -61.6%
Insurer 0.3% 3 +29.7%
Benefit plan 0.3% 5 +2.7%
Non-US 1.4% 8 -37.3%
Holding company 20.8% 7 -29.4%
Broker-dealer 0.0% 0 —
Unknown 13.2% 52 +13.4%

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Excluded 3 holders with no observed 2026-03-31 13F and 1 holder with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.

Conviction and Crowding

207 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders
3
1.45% of filers hold it in their top 10
Mar 31, 2026: 4
Holders above 5%
2
median weight 0.002%
Mar 31, 2026: 1
Crowding
37.0%
of shares outstanding, 89th percentile
Mar 31, 2026: 34.0%
Private-fund advisers
32.0%
of shares outstanding
Institutional ownership
82.9%
120.5% of the estimated free float above 100%: filers can report lent or client shares more than once
Top 10 holders
51.5%
of 13F shares, Herfindahl 0.035
Active holders
-15.4%
like-for-like share change of active filers
5% stakes on record
8
1 13D, 7 13G (5 institutional, 1 passive, 1 exempt)
How long holders have held it value-weighted 12.9 quarters
Under 1 year 30.2% 1 to 3 years 27.7% 3 years or more 42.2% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net sellers of $8,891,932 (0 buying, 1 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost
$34.17
estimated per share
Mar 31, 2026: $32.13
Quarter-end price
$45.01
implied by 13F values
Estimated gain or loss
+31.7%
price against the estimated cost
Estimated at a loss
0.000%
of costed 13F value

Estimated cost covers 43.6% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies TRS's active holders also own, quarter ended Jun 30, 2026
# Company Shared holders
1 CSV Carriage Services Inc 3
2 KOP Koppers Holdings Inc. 3
3 ARHS Arhaus, Inc. 3
4 HLMN Hillman Solutions Corp. 3
5 DAN DANA Inc 3
6 WTTR Select Water Solutions, Inc. 4
7 ACVA ACV Auctions Inc. 3
8 PRCH Porch Group, Inc. 3
9 RDNT RadNet, Inc. 3
10 ACA Arcosa, Inc. 3

Shareholder Targets

13F filers that own its peers but not TRS, quarter ended Jun 30, 2026

Found through its holder-overlap peers: CSV, KOP, ARHS, HLMN, DAN, WTTR, ACVA, PRCH, RDNT, ACA, NRG, PM, XEL, WELL, JPM, MSFT, BNY, GOOGL, BRK-B, META. 6,906 filers in all.

# Filer In peers
1 Capital Research Global Investors Adviser, Diversified active $126,042,226,043 8 held
2 Capital World Investors Adviser, Diversified active $123,087,904,953 9 held
3 Capital International Investors Adviser, Diversified active $81,341,108,154 8 held
4 WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active $54,971,641,618 13 held
5 FRANKLIN RESOURCES INC Adviser, Diversified active $51,386,604,299 19 held
6 Amundi Holding company, Index-like $50,562,971,412 14 held
7 Berkshire Hathaway Inc Insurer, Concentrated $37,764,088,381 1 held
8 Fisher Asset Management, LLC Adviser, Diversified active $34,372,017,940 9 held
9 RAYMOND JAMES FINANCIAL INC Unknown, Diversified active $25,199,547,156 18 held
10 BANK OF MONTREAL /CAN/ Bank, Diversified active $24,008,112,125 16 held

Fund Ownership of TRS by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 16.87% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 3.16% 1,133,920
Index ETFs 13.71% 4,918,768
Active ETFs 2.33% 835,772
Active funds 17.79% 6,380,674
Unclassified 2.30% 824,171
All registered funds 39.29% 14,093,305
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Showing 100 of 211
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Holder Value (USD) % of 13F Shares Open

Showing the top 100 of 211 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 842633 CUSIP 896215209 13F (30d) 13 filings 13 filers Visit website Investor relations