Tenaris S.A. - Depositary Receipt (Common Stock)
US ˙ NYSE ˙ US88031M1099

SecurityTS / Tenaris S.A. - Depositary Receipt (Common Stock)
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership1,121,007 shares
Latest Disclosed Value $ 65,218,551
Dimensional Fund Advisors Lp reports 9.22% decrease in ownership of TS / Tenaris S.A. - Depositary Receipt (Common Stock)

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 1,121,007 shares of Tenaris S.A. - Depositary Receipt (Common Stock) (US:TS) valued at $65,220,187 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,234,828 shares of Tenaris S.A. - Depositary Receipt (Common Stock). This represents a change in shares of -9.22% during the quarter. The current value of the position is $68,874,670 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 TENARIS S A SPONSORED ADS 88031M109 1,121,007 -113,821 -9.22 65,219 37.36 0.0135
2026-02-12 2025-12-31 13F TENARIS S A SPONSORED ADS 88031M109 1,234,828 100,568 8.87 47,481 17.03 0.0100
2025-11-12 2025-09-30 13F TENARIS S A SPONSORED ADS 88031M109 1,134,260 192,794 20.48 40,572 15.23 0.0087
2025-08-12 2025-06-30 13F TENARIS S A SPONSORED ADS 88031M109 941,466 366,651 63.79 35,209 56.62 0.0082
2025-05-13 2025-03-31 13F TENARIS S A SPONSORED ADS 88031M109 574,815 155,734 37.16 22,481 41.95 0.0056
2025-02-13 2024-12-31 13F TENARIS S A SPONSORED ADS 88031M109 419,081 15,790 3.92 15,837 23.53 0.0038
2024-11-07 2024-09-30 13F TENARIS S A SPONSORED ADS 88031M109 403,291 152,887 61.06 12,821 67.76 0.0031
2024-08-09 2024-06-30 13F TENARIS S A SPONSORED ADS 88031M109 250,404 -30,732 -10.93 7,642 -30.78 0.0020
2024-05-10 2024-03-31 13F TENARIS S A SPONSORED ADS 88031M109 281,136 -7,357 -2.55 11,040 10.09 0.0030
2024-02-07 2023-12-31 13F TENARIS S A SPONSORED ADS 88031M109 288,493 2,450 0.86 10,028 10.95 0.0029
2023-11-09 2023-09-30 13F TENARIS S A SPONSORED ADS 88031M109 286,043 -47,724 -14.30 9,039 -9.58 0.0030
2023-08-09 2023-06-30 13F TENARIS S A SPONSORED ADS 88031M109 333,767 3,571 1.08 9,996 6.52 0.0032
2023-05-12 2023-03-31 13F TENARIS S A SPONSORED ADS 88031M109 330,196 -17,522 -5.04 9,384 78,100.00 0.0032
2023-02-09 2022-12-31 13F TENARIS S A SPONSORED ADS 88031M109 347,718 -81,665 -19.02 12 -99.89 0.0036
2022-11-10 2022-09-30 13F TENARIS S A SPONSORED ADS 88031M109 429,383 -139,245 -24.49 11,097 -24.04 0.0043
2022-08-12 2022-06-30 13F TENARIS S A SPONSORED ADS 88031M109 568,628 -116,518 -17.01 14,609 -29.10 0.0052
2022-05-13 2022-03-31 13F TENARIS S A ADR 88031M109 685,146 -19,947 -2.83 20,604 40.10 0.0063
2022-02-09 2021-12-31 13F TENARIS S A ADR 88031M109 705,093 132,629 23.17 14,707 21.70 0.0044
2021-11-12 2021-09-30 13F TENARIS S A ADR 88031M109 572,464 102,385 21.78 12,085 17.39 0.0039
2021-08-12 2021-06-30 13F TENARIS S A ADR 88031M109 470,079 -89,495 -15.99 10,295 -18.92 0.0033
2021-05-14 2021-03-31 13F TENARIS S A ADR 88031M109 559,574 262,196 88.17 12,697 167.70 0.0042
2021-03-08 2020-12-31 13F/A-2 TENARIS S A ADR 88031M109 297,378 256,009 618.84 4,743 1,065.36 0.0017
2021-02-11 2020-12-31 13F TENARIS S A ADR 88031M109 297,378 256,009 4,743 1,712.9195
2020-11-12 2020-09-30 13F TENARIS S A ADR 88031M109 41,369 -9,449 -18.59 407 -38.05 0.0002
2020-08-13 2020-06-30 13F TENARIS S A ADR 88031M109 50,818 20,141 65.66 657 77.57 0.0003
2020-05-14 2020-03-31 13F TENARIS S A ADR 88031M109 30,677 0 0.00 370 -46.76 0.0002
2020-02-14 2019-12-31 13F TENARIS S A ADR 88031M109 30,677 0 0.00 695 6.92 0.0003
2019-11-12 2019-09-30 13F TENARIS S A ADR 88031M109 30,677 0 0.00 650 -19.45 0.0003
2019-08-13 2019-06-30 13F TENARIS S A ADR 88031M109 30,677 0 0.00 807 -6.92 0.0003
2019-08-12 2019-03-31 13F/A-2 TENARIS S A ADR 88031M109 30,677 -4,406 -12.56 867 15.91 0.0003
2019-05-10 2019-03-31 13F TENARIS S A ADR 88031M109 30,677 -4,406 867
2019-02-26 2018-12-31 13F/A-1 TENARIS S A ADR 88031M109 35,083 -12,007 -25.50 748 -52.60 0.0003
2019-02-13 2018-12-31 13F TENARIS S A ADR 88031M109 35,083 -12,007 748
2018-11-13 2018-09-30 13F TENARIS S A ADR 88031M109 47,090 0 0.00 1,578 -7.93 0.0006
2018-08-10 2018-06-30 13F TENARIS S A ADR 88031M109 47,090 -2,006 -4.09 1,714 0.71 0.0007
2018-05-11 2018-03-31 13F TENARIS S A ADR 88031M109 49,096 -79 -0.16 1,702 8.62 0.0007
2018-02-12 2017-12-31 13F TENARIS S A ADR 88031M109 49,175 0 0.00 1,567 12.57 0.0006
2017-11-13 2017-09-30 13F TENARIS S A ADR 88031M109 49,175 -1,391 -2.75 1,392 -11.62 0.0006
2017-08-11 2017-06-30 13F TENARIS S A ADR 88031M109 50,566 -10,598 -17.33 1,575 -24.57 0.0007
2017-05-12 2017-03-31 13F TENARIS S A ADR 88031M109 61,164 -5,880 -8.77 2,088 -12.78 0.0010
2017-02-09 2016-12-31 13F TENARIS S A ADR 88031M109 67,044 -5,726 -7.87 2,394 15.82 0.0012
2016-11-10 2016-09-30 13F TENARIS S A ADR 88031M109 72,770 -331 -0.45 2,067 -1.94 0.0011
2016-08-09 2016-06-30 13F TENARIS S A ADR 88031M109 73,101 0 0.00 2,108 16.46 0.0012
2016-05-13 2016-03-31 13F TENARIS S A ADR 88031M109 73,101 -8,564 -10.49 1,810 -6.89 0.0011
2016-02-10 2015-12-31 13F TENARIS S A ADR 88031M109 81,665 -32,559 -28.50 1,944 -29.41 0.0012
2015-11-13 2015-09-30 13F TENARIS S A ADR 88031M109 114,224 0 0.00 2,754 -10.76 0.0018
2015-08-14 2015-06-30 13F TENARIS S A ADR 88031M109 114,224 0 0.00 3,086 -3.50 0.0019
2015-05-14 2015-03-31 13F TENARIS S A ADR 88031M109 114,224 -3,642 -3.09 3,198 -10.19 0.0020
2015-02-06 2014-12-31 13F TENARIS S A ADR 88031M109 117,866 0 0.00 3,561 -33.67 0.0023
2014-11-13 2014-09-30 13F TENARIS S A ADR 88031M109 117,866 0 0.00 5,369 -3.38 0.0038
2014-08-08 2014-06-30 13F TENARIS S A ADR 88031M109 117,866 0 0.00 5,557 6.54 0.0039
2014-05-14 2014-03-31 13F TENARIS S A ADR 88031M109 117,866 -280 -0.24 5,216 1.05 0.0039
2014-02-12 2013-12-31 13F TENARIS S A ADR 88031M109 118,146 -942 -0.79 5,162 -7.34 0.0040
2013-11-13 2013-09-30 13F TENARIS S A ADR 88031M109 119,088 0 0.00 5,571 16.16 0.0048
2013-08-15 2013-06-30 13F TENARIS S A ADR 88031M109 119,088 119,088 4,796 0.0045
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.