Tenaris S.A. - Depositary Receipt (Common Stock)
DE ˙ DB ˙ US88031M1099
55,00 € ↑0,50 (0,92%)
2026-06-03
DEL PRIS
SecurityDE:TW1 / Tenaris S.A. - Depositary Receipt (Common Stock)
InstitutionBlackRock, Inc.
Latest Disclosed Ownership715,791 shares
Latest Disclosed Value $ 41,644,696
BlackRock, Inc. reports 2.78% increase in ownership of TW1 / Tenaris S.A. - Depositary Receipt (Common Stock)

On May 13, 2026 - BlackRock, Inc. filed a 13F-HR form disclosing ownership of 715,791 shares of Tenaris S.A. - Depositary Receipt (Common Stock) (DE:TW1) valued at $35,646,392 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 696,444 shares of Tenaris S.A. - Depositary Receipt (Common Stock). This represents a change in shares of 2.78% during the quarter. The current value of the position is $39,368,505 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)
2026-05-13 2026-03-31 13F TENARIS S A SPONSORED ADS 88031M109 715,791 19,347 2.78 41,645 55.52 0.0007
2026-02-12 2025-12-31 13F TENARIS S A SPONSORED ADS 88031M109 696,444 55,306 8.63 26,778 16.77 0.0005
2025-11-12 2025-09-30 13F TENARIS S A SPONSORED ADS 88031M109 641,138 14,039 2.24 22,934 -2.22 0.0004
2025-08-12 2025-06-30 13F TENARIS S A SPONSORED ADS 88031M109 627,099 -30,069 -4.58 23,453 -8.75 0.0004
2025-05-02 2025-03-31 13F TENARIS S A SPONSORED ADS 88031M109 657,168 -10,785 -1.61 25,702 1.82 0.0005
2025-02-07 2024-12-31 13F TENARIS S A SPONSORED ADS 88031M109 667,953 15,407 2.36 25,242 21.68 0.0005
2024-11-13 2024-09-30 13F TENARIS S A SPONSORED ADS 88031M109 652,546 -5,540 -0.84 20,744 3.29 0.0004
2024-08-13 2024-06-30 13F TENARIS S A SPONSORED ADS 88031M109 658,086 1,126 0.17 20,085 -22.15 0.0005
2024-05-10 2024-03-31 13F TENARIS S A SPONSORED ADS 88031M109 656,960 -482,727 -42.36 25,799 -34.88 0.0006
2024-02-13 2023-12-31 13F TENARIS S A SPONSORED ADS 88031M109 1,139,687 5,998 0.53 39,616 10.58 0.0010
2023-11-13 2023-09-30 13F TENARIS S A SPONSORED ADS 88031M109 1,133,689 -202,585 -15.16 35,825 -10.49 0.0010
2023-08-11 2023-06-30 13F TENARIS S A SPONSORED ADS 88031M109 1,336,274 62,570 4.91 40,021 10.56 0.0011
2023-05-12 2023-03-31 13F TENARIS S A SPONSORED ADS 88031M109 1,273,704 137,745 12.13 36,199 -9.37 0.0011
2023-02-13 2022-12-31 13F TENARIS S A SPONSORED ADS 88031M109 1,135,959 -97,073 -7.87 39,940 25.35 0.0013
2022-11-14 2022-09-30 13F TENARIS S A SPONSORED ADS 88031M109 1,233,032 622,827 102.07 31,863 103.26 0.0011
2022-08-12 2022-06-30 13F TENARIS S A SPONSORED ADS 88031M109 610,205 39,218 6.87 15,676 -8.70 0.0005
2022-05-12 2022-03-31 13F TENARIS S A SPONSORED ADS 88031M109 570,987 -35,178 -5.80 17,170 35.78 0.0005
2022-02-10 2021-12-31 13F TENARIS S A SPONSORED ADS 88031M109 606,165 33,115 5.78 12,645 4.53 0.0003
2021-11-09 2021-09-30 13F TENARIS S A SPONSORED ADS 88031M109 573,050 6,897 1.22 12,097 -2.44 0.0003
2021-08-11 2021-06-30 13F TENARIS S A SPONSORED ADS 88031M109 566,153 67,975 13.64 12,399 9.69 0.0003
2021-05-07 2021-03-31 13F TENARIS S A SPONSORED ADS 88031M109 498,178 498,142 1,383,727.78 11,304 1,130,300.00 0.0003
2021-02-05 2020-12-31 13F TENARIS S A SPONSORED ADS 88031M109 36 -25 -40.98 1 0.00 0.0000
2020-11-06 2020-09-30 13F TENARIS S A SPONSORED ADS 88031M109 61 61 1 0.0000
2020-05-01 2020-03-31 13F TENARIS S A SPONSORED ADS 88031M109 0 -4,238 -100.00 0 -100.00
2020-02-13 2019-12-31 13F TENARIS S A SPONSORED ADS 88031M109 4,238 -3,226 -43.22 96 -39.24 0.0000
2019-11-08 2019-09-30 13F TENARIS S A SPONSORED ADS 88031M109 7,464 -56,959 -88.41 158 -90.68 0.0000
2019-08-22 2019-06-30 13F/A-1 TENARIS S A SPONSORED ADS 88031M109 64,423 59,355 1,171.17 1,695 1,085.31 0.0001
2019-08-13 2019-06-30 13F TENARIS S A SPONSORED ADS 88031M109 64,423 59,355 1,695
2019-05-09 2019-03-31 13F TENARIS S A SPONSORED ADS 88031M109 5,068 -1,054 -17.22 143 9.16 0.0000
2019-02-08 2018-12-31 13F TENARIS S A SPONSORED ADR 88031M109 6,122 -3,433 -35.93 131 -59.06 0.0000
2018-11-09 2018-09-30 13F TENARIS S A SPONSORED ADR 88031M109 9,555 8,076 546.04 320 492.59 0.0000
2018-08-09 2018-06-30 13F TENARIS S A SPONSORED ADR 88031M109 1,479 856 137.40 54 145.45 0.0000
2018-05-09 2018-03-31 13F TENARIS S A SPONSORED ADR 88031M109 623 -64 -9.32 22 0.00 0.0000
2018-02-09 2017-12-31 13F TENARIS S A SPONSORED ADR 88031M109 687 225 48.70 22 69.23 0.0000
2017-11-14 2017-09-30 13F TENARIS S A SPONSORED ADR 88031M109 462 -26,690 -98.30 13 -98.46 0.0000
2017-08-10 2017-06-30 13F TENARIS S A SPONSORED ADR 88031M109 27,152 26,830 8,332.30 846 7,590.91 0.0000
2017-05-12 2017-03-31 13F TENARIS S A SPONSORED ADR 88031M109 322 322 11 0.0000
2016-05-10 2016-03-31 13F TENARIS S A SPONSORED ADR 88031M109 0 -1,400 -100.00 0 -100.00
2016-02-11 2015-12-31 13F TENARIS S A SPONSORED ADR 88031M109 1,400 400 40.00 33 37.50 0.0000
2015-11-13 2015-09-30 13F TENARIS S A SPONSORED ADR 88031M109 1,000 -11,402 -91.94 24 -95.86 0.0000
2013-11-12 2013-09-30 13F TENARIS S A SPONSORED ADR 88031M109 12,402 -23 -0.19 580 16.00 0.0011
2013-08-13 2013-06-30 13F TENARIS S A SPONSORED ADR 88031M109 12,425 12,425 500 0.0010
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.