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

SecurityTS / Tenaris S.A. - Depositary Receipt (Common Stock)
InstitutionMorgan Stanley
Latest Disclosed Ownership1,178,069 shares
Latest Disclosed Value $ 68,540,118
Morgan Stanley reports 0.72% increase in ownership of TS / Tenaris S.A. - Depositary Receipt (Common Stock)

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 1,178,069 shares of Tenaris S.A. - Depositary Receipt (Common Stock) (US:TS) valued at $68,540,054 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 1,169,688 shares of Tenaris S.A. - Depositary Receipt (Common Stock). This represents a change in shares of 0.72% during the quarter. The current value of the position is $75,419,977 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)
2026-05-15 2026-03-31 13F TENARIS S A SPONSORED ADS 88031M109 1,178,069 8,381 0.72 68,540 52.40 0.0041
2026-05-27 2025-12-31 13F/A-1 TENARIS S A SPONSORED ADS 88031M109 1,169,688 -1,929 -0.16 44,975 7.32 0.0027
2026-02-13 2025-12-31 13F TENARIS S A SPONSORED ADS 88031M109 1,169,688 -1,929 44,975 0.0027
2026-05-27 2025-09-30 13F/A-1 TENARIS S A SPONSORED ADS 88031M109 1,171,617 52,861 4.72 41,909 0.16 0.0025
2025-11-14 2025-09-30 13F TENARIS S A SPONSORED ADS 88031M109 1,171,617 52,861 41,909 0.0025
2025-08-15 2025-06-30 13F TENARIS S A SPONSORED ADS 88031M109 1,118,756 -712,550 -38.91 41,842 -41.58 0.0027
2025-05-15 2025-03-31 13F TENARIS S A SPONSORED ADS 88031M109 1,831,306 432,811 30.95 71,622 35.52 0.0051
2025-05-15 2024-12-31 13F/A-1 TENARIS S A SPONSORED ADS 88031M109 1,398,495 193,151 16.02 52,849 37.93 0.0037
2025-02-14 2024-12-31 13F TENARIS S A SPONSORED ADS 88031M109 1,398,495 193,151 52,849 0.0037
2025-05-14 2024-09-30 13F/A-2 TENARIS S A SPONSORED ADS 88031M109 1,205,344 -343,075 -22.16 38,318 -18.92 0.0028
2025-02-14 2024-09-30 13F/A-1 TENARIS S A SPONSORED ADS 88031M109 1,205,344 -343,075 38,318 0.0028
2024-11-14 2024-09-30 13F TENARIS S A SPONSORED ADS 88031M109 1,205,344 -343,075 38,318 0.0003
2025-05-14 2024-06-30 13F/A-2 TENARIS S A SPONSORED ADS 88031M109 1,548,419 20,831 1.36 47,258 -21.22 0.0037
2024-10-17 2024-06-30 13F/A-1 TENARIS S A SPONSORED ADS 88031M109 1,548,419 20,831 47,258 0.0037
2024-08-14 2024-06-30 13F TENARIS S A SPONSORED ADS 88031M109 1,548,419 20,831 47,258 0.0037
2024-10-17 2024-03-31 13F/A-2 TENARIS S A SPONSORED ADS 88031M109 1,527,588 -96,566 -5.95 59,988 6.26 0.0048
2024-08-16 2024-03-31 13F/A-1 TENARIS S A SPONSORED ADS 88031M109 1,527,588 -96,566 59,988 0.0006
2024-05-15 2024-03-31 13F TENARIS S A SPONSORED ADS 88031M109 1,527,588 -96,566 59,988 0.0048
2024-08-16 2023-12-31 13F/A-1 TENARIS S A SPONSORED ADS 88031M109 1,624,154 -37,495 -2.26 56,456 7.52 0.0050
2024-02-13 2023-12-31 13F TENARIS S A SPONSORED ADS 88031M109 1,624,154 -37,495 56,456 0.0050
2023-11-15 2023-09-30 13F TENARIS S A SPONSORED ADS 88031M109 1,661,649 -713,381 -30.04 52,508 -26.18 0.0053
2023-08-14 2023-06-30 13F TENARIS S A SPONSORED ADS 88031M109 2,375,030 -611,626 -20.48 71,132 -16.20 0.0070
2023-05-15 2023-03-31 13F TENARIS S A SPONSORED ADS 88031M109 2,986,656 1,040,576 53.47 84,881 24.05 0.0091
2023-02-14 2022-12-31 13F TENARIS S A SPONSORED ADS 88031M109 1,946,080 167,024 9.39 68,424 48.84 0.0078
2022-11-14 2022-09-30 13F TENARIS S A SPONSORED ADS 88031M109 1,779,056 -110,358 -5.84 45,972 -5.29 0.0063
2022-10-27 2022-06-30 13F/A-1 TENARIS S A SPONSORED ADS 88031M109 1,889,414 1,373,243 266.04 48,540 212.74 0.0063
2022-08-15 2022-06-30 13F TENARIS S A SPONSORED ADS 88031M109 1,889,414 1,373,243 48,540 0.0063
2022-10-27 2022-03-31 13F/A-1 TENARIS S A SPONSORED ADS 88031M109 516,171 202,716 64.67 15,521 137.40 0.0021
2022-05-13 2022-03-31 13F TENARIS S A SPONSORED ADS 88031M109 516,171 202,716 15,521 0.0021
2022-02-14 2021-12-31 13F TENARIS S A SPONSORED ADS 88031M109 313,455 51,420 19.62 6,538 18.19 0.0008
2021-11-15 2021-09-30 13F TENARIS S A SPONSORED ADS 88031M109 262,035 57,335 28.01 5,532 23.40 0.0007
2021-08-23 2021-06-30 13F/A-1 TENARIS S A SPONSORED ADS 88031M109 204,700 120,699 143.69 4,483 135.20 0.0006
2021-08-16 2021-06-30 13F TENARIS S A SPONSORED ADS 88031M109 204,700 120,699 4,483 0.0001
2021-05-17 2021-03-31 13F TENARIS S A SPONSORED ADS 88031M109 84,001 -125 -0.15 1,906 42.03 0.0003
2021-02-16 2020-12-31 13F TENARIS S A SPONSORED ADS 88031M109 84,126 -961,056 -91.95 1,342 -86.96 0.0002
2020-11-13 2020-09-30 13F TENARIS S A SPONSORED ADS 88031M109 1,045,182 214,710 25.85 10,295 -4.13 0.0020
2020-08-14 2020-06-30 13F TENARIS S A SPONSORED ADS 88031M109 830,472 546,259 192.20 10,738 213.61 0.0024
2020-05-26 2020-03-31 13F/A-1 TENARIS S A SPONSORED ADS 88031M109 284,213 -364,491 -56.19 3,424 -76.69 0.0009
2020-05-15 2020-03-31 13F TENARIS S A SPONSORED ADS 88031M109 284,213 -364,491 3,424 263.0346
2020-02-14 2019-12-31 13F TENARIS S A SPONSORED ADS 88031M109 648,704 -927,469 -58.84 14,687 -56.01 0.0034
2019-11-14 2019-09-30 13F TENARIS S A SPONSORED ADS 88031M109 1,576,173 1,442,260 1,077.01 33,384 847.60 0.0088
2019-08-14 2019-06-30 13F TENARIS S A SPONSORED ADS 88031M109 133,913 -20,233 -13.13 3,523 -19.10 0.0009
2019-05-15 2019-03-31 13F TENARIS S A SPONSORED ADS 88031M109 154,146 -1,205,902 -88.67 4,355 -84.98 0.0012
2019-02-14 2018-12-31 13F TENARIS S A SPONSORED ADR 88031M109 1,360,048 1,199,760 748.50 28,996 439.76 0.0087
2019-04-23 2018-09-30 13F/A-2 TENARIS S A SPONSORED ADR 88031M109 160,288 -20,161 -11.17 5,372 -18.18 0.0013
2018-11-20 2018-09-30 13F/A-1 TENARIS S A SPONSORED ADR 88031M109 160,288 0 5,372 0.0013
2018-11-14 2018-09-30 13F TENARIS S A SPONSORED ADR 88031M109 160,288 -20,161 5,372
2019-04-23 2018-06-30 13F/A-1 TENARIS S A SPONSORED ADR 88031M109 180,449 110,558 158.19 6,566 171.10 0.0018
2018-08-14 2018-06-30 13F TENARIS S A SPONSORED ADR 88031M109 180,449 110,558 6,566
2019-04-23 2018-03-31 13F/A-1 TENARIS S A SPONSORED ADR 88031M109 69,891 -486,483 -87.44 2,422 -86.34 0.0007
2018-05-14 2018-03-31 13F TENARIS S A SPONSORED ADR 88031M109 69,891 -486,483 2,422
2019-04-23 2017-12-31 13F/A-1 TENARIS S A SPONSORED ADR 88031M109 556,374 -835,020 -60.01 17,726 -55.00 0.0049
2018-02-14 2017-12-31 13F TENARIS S A SPONSORED ADR 88031M109 556,374 -835,020 17,726
2017-11-14 2017-09-30 13F TENARIS S A SPONSORED ADR 88031M109 1,391,394 1,277,279 1,119.29 39,390 1,008.33 0.0118
2017-08-11 2017-06-30 13F TENARIS S A SPONSORED ADR 88031M109 114,115 -5,453 -4.56 3,554 -12.93 0.0011
2017-05-22 2017-03-31 13F/A-1 TENARIS S A SPONSORED ADR 88031M109 119,568 39,002 48.41 4,082 41.88 0.0013
2017-05-12 2017-03-31 13F TENARIS S A SPONSORED ADR 88031M109 119,568 4,082
2017-02-22 2016-12-31 13F/A-1 TENARIS S A SPONSORED ADR 88031M109 80,566 9,138 12.79 2,877 41.86 0.0009
2017-02-13 2016-12-31 13F TENARIS S A SPONSORED ADR 88031M109 80,566 2,877
2016-11-10 2016-09-30 13F TENARIS S A SPONSORED ADR 88031M109 71,428 16,327 29.63 2,028 27.63 0.0007
2016-08-12 2016-06-30 13F TENARIS S A SPONSORED ADR 88031M109 55,101 -3,834 -6.51 1,589 8.91 0.0006
2016-05-12 2016-03-31 13F TENARIS S A SPONSORED ADR 88031M109 58,935 -34,845 -37.16 1,459 -34.60 0.0006
2016-02-09 2015-12-31 13F TENARIS S A SPONSORED ADR 88031M109 93,780 30,130 47.34 2,231 45.25 0.0008
2016-02-08 2015-09-30 13F/A-1 TENARIS S A SPONSORED ADR 88031M109 63,650 -196,936 -75.57 1,536 -78.18 0.0006
2015-11-09 2015-09-30 13F TENARIS S A SPONSORED ADR 88031M109 63,650 1,536
2015-08-12 2015-06-30 13F TENARIS S A SPONSORED ADR 88031M109 260,586 207,092 387.13 7,041 370.34 0.0024
2015-05-14 2015-03-31 13F TENARIS S A SPONSORED ADR 88031M109 53,494 -114,216 -68.10 1,497 -70.45 0.0006
2015-02-13 2014-12-31 13F TENARIS S A SPONSORED ADR 88031M109 167,710 101,154 151.98 5,066 67.08 0.0019
2014-12-16 2014-09-30 13F/A-1 TENARIS S A SPONSORED ADR 88031M109 66,556 -46,791 -41.28 3,032 -39.55 0.0012
2014-11-14 2014-09-30 13F TENARIS S A SPONSORED ADR 88031M109 66,556 3,032
2014-05-13 2014-03-31 13F TENARIS S A SPONSORED ADR 88031M109 113,347 -76,788 -40.39 5,016 -39.62 0.0021
2014-02-13 2013-12-31 13F TENARIS S A SPONSORED ADR 88031M109 190,135 65,737 52.84 8,307 42.76 0.0035
2013-11-13 2013-09-30 13F TENARIS S A ADR ADRS 88031M109 124,398 -48,353 -27.99 5,819 -16.36 0.0028
2013-08-08 2013-06-30 13F TENARIS S A ADR ADRS 88031M109 172,751 172,751 6,957 0.0035
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.