DT Midstream, Inc.
US ˙ NYSE ˙ US23345M1071

SecurityDTM / DT Midstream, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership2,276,844 shares
Latest Disclosed Value $ 306,622,897
Dimensional Fund Advisors Lp reports 13.25% decrease in ownership of DTM / DT Midstream, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 2,276,844 shares of DT Midstream, Inc. (US:DTM) valued at $306,622,581 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 2,624,612 shares of DT Midstream, Inc.. This represents a change in shares of -13.25% during the quarter. The current value of the position is $321,786,363 USD.

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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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)
2026-05-07 2026-03-31 13F DT MIDSTREAM COMMON STOCK 23345M107 2,276,844 -347,768 -13.25 306,623 -2.39 0.0137
2026-02-12 2025-12-31 13F DT MIDSTREAM COMMON STOCK 23345M107 2,624,612 -43,835 -1.64 314,123 4.12 0.0659
2025-11-12 2025-09-30 13F DT MIDSTREAM COMMON STOCK 23345M107 2,668,447 99,602 3.88 301,695 6.86 0.0647
2025-08-12 2025-06-30 13F DT MIDSTREAM COMMON STOCK 23345M107 2,568,845 -470,943 -15.49 282,334 -3.73 0.0654
2025-05-13 2025-03-31 13F DT MIDSTREAM COMMON STOCK 23345M107 3,039,788 -685,433 -18.40 293,281 -20.82 0.0729
2025-02-13 2024-12-31 13F DT MIDSTREAM COMMON STOCK 23345M107 3,725,221 -695,896 -15.74 370,403 6.51 0.0890
2024-11-07 2024-09-30 13F DT MIDSTREAM COMMON STOCK 23345M107 4,421,117 27,606 0.63 347,760 11.44 0.0844
2024-08-09 2024-06-30 13F DT MIDSTREAM COMMON STOCK 23345M107 4,393,511 490,613 12.57 312,070 30.87 0.0815
2024-05-10 2024-03-31 13F DT MIDSTREAM COMMON STOCK 23345M107 3,902,898 501,326 14.74 238,467 27.93 0.0646
2024-02-07 2023-12-31 13F DT MIDSTREAM COMMON STOCK 23345M107 3,401,572 266,433 8.50 186,407 12.35 0.0544
2023-11-09 2023-09-30 13F DT MIDSTREAM COMMON STOCK 23345M107 3,135,139 608,520 24.08 165,913 32.47 0.0544
2023-08-09 2023-06-30 13F DT MIDSTREAM COMMON STOCK 23345M107 2,526,619 504,300 24.94 125,244 25.45 0.0399
2023-05-12 2023-03-31 13F DT MIDSTREAM COMMON STOCK 23345M107 2,022,319 333,229 19.73 99,839 107,253.76 0.0336
2023-02-09 2022-12-31 13F DT MIDSTREAM COMMON STOCK 23345M107 1,689,090 280,126 19.88 93 -99.87 0.0276
2022-11-10 2022-09-30 13F DT MIDSTREAM COMMON STOCK 23345M107 1,408,964 274,550 24.20 73,113 31.47 0.0281
2022-08-12 2022-06-30 13F DT MIDSTREAM COMMON STOCK 23345M107 1,134,414 247,395 27.89 55,610 15.54 0.0199
2022-05-13 2022-03-31 13F DT MIDSTREAM COM 23345M107 887,019 356,227 67.11 48,129 88.99 0.0148
2022-02-09 2021-12-31 13F DT MIDSTREAM COM 23345M107 530,792 284,661 115.65 25,467 123.79 0.0077
2021-11-12 2021-09-30 13F DT MIDSTREAM COM 23345M107 246,131 246,131 11,380 0.0037
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.