TSEOQ · Trinseo PLC · Holdings
Substantial doubt about the company's ability to continue as a going concern.
“As a result of the Company's financial condition, indebtedness, Chapter 11 proceedings, and the uncertainties associated with confirmation and consummation of the Plan, including the resolution of pending disputes and litigation involving certain minority lenders, the Company has concluded that substantial doubt exists about its ability to continue as a going concern within one year after the date of issuance of these condensed consolidated financial statements.”View the 10-Q filed Nov 9, 2026
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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 Ownership Trend
Who Holds TSEOQ
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: 6 filers, like-for-like change +347.2%; actively managed books -9.7%; index-like books +758.2%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 100.0% | 6 | +750.7% |
| Bank | 0.0% | 0 | -100.0% |
| Adviser | 0.0% | 0 | — |
| Broker-dealer | 0.0% | 0 | — |
| Benefit plan | 0.0% | 0 | — |
| Non-US | 0.0% | 0 | — |
| Holding company | 0.0% | 0 | — |
| Exempt adviser | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | -100.0% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 89.2% | 1 | +758.2% |
| Concentrated | 9.6% | 1 | -0.6% |
| Diversified active | 1.2% | 4 | -48.5% |
| Systematic-like | 0.0% | 0 | — |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 100.0% | 5 | +369.2% |
| Medium turnover | 0.0% | 1 | -99.4% |
| High turnover | 0.0% | 0 | — |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Medium horizon | 89.2% | 3 | +787.5% |
| Long horizon | 10.8% | 3 | -12.2% |
| Short horizon | 0.0% | 0 | — |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 0.0% | 1 | -90.5% |
| $1B to $10B | 100.0% | 4 | +785.5% |
| $10B to $100B | 0.0% | 1 | -91.4% |
| $100B or more | 0.0% | 0 | -100.0% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 10.8% | 5 | -1.1% |
| Other investment advisers | 89.2% | 1 | +19111.1% |
| Governments and sovereign funds | 0.0% | 0 | -100.0% |
| Pooled investment vehicles | 0.0% | 0 | — |
| Registered funds and BDCs | 0.0% | 0 | — |
| Insurance companies | 0.0% | 0 | — |
| Diversified | 0.0% | 0 | — |
| Pension and profit sharing plans | 0.0% | 0 | — |
| Other | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | -100.0% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Venture capital funds | 0.0% | 1 | 0.0% |
| Real estate funds | 1.2% | 1 | -1.0% |
| No private funds | 98.8% | 4 | +875.3% |
| Private equity funds | 0.0% | 0 | -100.0% |
| Other private funds | 0.0% | 0 | -100.0% |
| Hedge funds | 0.0% | 0 | — |
| Private funds, type not stated | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | -100.0% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 100.0% | 6 | +368.9% |
| Outside the US | 0.0% | 0 | -100.0% |
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 2 holders with no observed 2026-06-30 13F.
Fund Ownership of TSEOQ by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 1.02% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 0.00% | 0 |
| Index ETFs | 1.02% | 371,130 |
| Active ETFs | 0.00% | 0 |
| Active funds | 1.05% | 383,800 |
| Unclassified | 0.00% | 0 |
| All registered funds | 2.06% | 754,930 |
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.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mid GAMMA Investing LLC Registered adviser TSE | — | — | 412,655 | Shares | 2026-10-08 |