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

SecurityTS / Tenaris S.A. - Depositary Receipt (Common Stock)
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership3,199,744 shares
Latest Disclosed Value $ 186,161,106
Renaissance Technologies Llc reports 7.94% increase in ownership of TS / Tenaris S.A. - Depositary Receipt (Common Stock)

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 3,199,744 shares of Tenaris S.A. - Depositary Receipt (Common Stock) (US:TS) valued at $186,161,106 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 2,964,344 shares of Tenaris S.A. - Depositary Receipt (Common Stock). This represents a change in shares of 7.94% during the quarter. The current value of the position is $196,592,271 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)
2026-05-14 2026-03-31 13F TENARIS S A SPONSORED ADS 88031M109 3,199,744 235,400 7.94 186,161 63.33 0.2912
2026-02-12 2025-12-31 13F TENARIS S A SPONSORED ADS 88031M109 2,964,344 -386,300 -11.53 113,979 -4.90 0.1768
2025-11-13 2025-09-30 13F TENARIS S A SPONSORED ADS 88031M109 3,350,644 459,100 15.88 119,853 10.83 0.1582
2025-08-13 2025-06-30 13F TENARIS S A SPONSORED ADS 88031M109 2,891,544 188,700 6.98 108,144 2.30 0.1439
2025-05-14 2025-03-31 13F TENARIS S A SPONSORED ADS 88031M109 2,702,844 183,900 7.30 105,708 11.05 0.1600
2025-02-13 2024-12-31 13F TENARIS S A SPONSORED ADS 88031M109 2,518,944 -300,200 -10.65 95,191 6.22 0.1409
2024-11-13 2024-09-30 13F TENARIS S A SPONSORED ADS 88031M109 2,819,144 227,100 8.76 89,621 13.29 0.1348
2024-08-09 2024-06-30 13F TENARIS S A SPONSORED ADS 88031M109 2,592,044 819,500 46.23 79,109 114,550.72 0.1342
2024-05-13 2024-03-31 13F TENARIS S A SPONSORED ADS 88031M109 1,772,544 941,200 113.21 70 146.43 0.1094
2024-02-13 2023-12-31 13F TENARIS S A SPONSORED ADS 88031M109 831,344 -650,600 -43.90 29 -39.13 0.0447
2023-11-14 2023-09-30 13F TENARIS S A SPONSORED ADS 88031M109 1,481,944 -348,600 -19.04 47 -14.81 0.0798
2023-08-11 2023-06-30 13F TENARIS S A SPONSORED ADS 88031M109 1,830,544 774,800 73.39 55 80.00 0.0790
2023-05-12 2023-03-31 13F TENARIS S A SPONSORED ADS 88031M109 1,055,744 -8,000 -0.75 30 -18.92 0.0398
2023-02-13 2022-12-31 13F TENARIS S A SPONSORED ADS 88031M109 1,063,744 -511,284 -32.46 37 -99.91 0.0512
2022-11-14 2022-09-30 13F TENARIS S A SPONSORED ADS 88031M109 1,575,028 -593,500 -27.37 40,699 -26.94 0.0576
2022-08-12 2022-06-30 13F TENARIS S A SPONSORED ADS 88031M109 2,168,528 -434,300 -16.69 55,709 -28.82 0.0660
2022-05-13 2022-03-31 13F TENARIS S A SPONSORED ADS 88031M109 2,602,828 -819,600 -23.95 78,267 9.63 0.0918
2022-02-11 2021-12-31 13F TENARIS S A SPONSORED ADS 88031M109 3,422,428 -1,596,472 -31.81 71,392 -32.62 0.0888
2021-11-12 2021-09-30 13F TENARIS S A SPONSORED ADS 88031M109 5,018,900 -1,515,200 -23.19 105,949 -25.96 0.1368
2021-08-13 2021-06-30 13F TENARIS S A SPONSORED ADS 88031M109 6,534,100 -1,584,200 -19.51 143,097 -22.32 0.1786
2021-05-13 2021-03-31 13F TENARIS S A SPONSORED ADS 88031M109 8,118,300 -1,717,800 -17.46 184,204 17.41 0.2292
2021-02-10 2020-12-31 13F TENARIS S A SPONSORED ADS 88031M109 9,836,100 -1,333,800 -11.94 156,886 42.59 0.1704
2020-11-13 2020-09-30 13F TENARIS S A SPONSORED ADS 88031M109 11,169,900 1,194,052 11.97 110,024 -14.70 0.1099
2020-08-13 2020-06-30 13F TENARIS S A SPONSORED ADS 88031M109 9,975,848 1,217,400 13.90 128,988 22.22 0.1113
2020-05-14 2020-03-31 13F TENARIS S A SPONSORED ADS 88031M109 8,758,448 1,006,648 12.99 105,539 -39.86 0.1025
2020-02-13 2019-12-31 13F TENARIS S A SPONSORED ADS 88031M109 7,751,800 2,711,800 53.81 175,501 64.41 0.1349
2019-11-13 2019-09-30 13F TENARIS S A SPONSORED ADS 88031M109 5,040,000 3,615,100 253.71 106,747 184.74 0.0904
2019-08-12 2019-06-30 13F TENARIS S A SPONSORED ADS 88031M109 1,424,900 658,600 85.95 37,489 73.18 0.0330
2019-05-14 2019-03-31 13F TENARIS S A SPONSORED ADS 88031M109 766,300 -1,567,900 -67.17 21,648 -56.50 0.0197
2019-02-12 2018-12-31 13F TENARIS S A SPONSORED ADR 88031M109 2,334,200 1,656,100 244.23 49,765 101.67 0.0545
2018-08-13 2018-06-30 13F/A-1 TENARIS S A SPONSORED ADR 88031M109 678,100 678,100 24,676 0.0269
2018-05-14 2018-03-31 13F TENARIS S A SPONSORED ADR 88031M109 0 -674,200 -100.00 0 -100.00
2018-02-13 2017-12-31 13F TENARIS S A SPONSORED ADR 88031M109 674,200 171,800 34.20 21,480 51.02 0.0237
2017-11-13 2017-09-30 13F TENARIS S A SPONSORED ADR 88031M109 502,400 -86,900 -14.75 14,223 -22.49 0.0167
2017-08-11 2017-06-30 13F TENARIS S A SPONSORED ADR 88031M109 589,300 -363,799 -38.17 18,351 -43.60 0.0234
2017-05-12 2017-03-31 13F TENARIS S A SPONSORED ADR 88031M109 953,099 953,099 32,539 0.0455
2016-08-12 2016-06-30 13F TENARIS S A SPONSORED ADR 88031M109 0 -124,500 -100.00 0 -100.00
2016-05-13 2016-03-31 13F TENARIS S A SPONSORED ADR 88031M109 124,500 124,500 0.00 3,083 0.0059
2016-02-11 2015-12-31 13F TENARIS S A SPONSORED ADR 88031M109 0 -425,100 -100.00 0 -100.00
2015-11-12 2015-09-30 13F TENARIS S A SPONSORED ADR 88031M109 425,100 236,100 124.92 10,249 100.69 0.0245
2015-08-14 2015-06-30 13F TENARIS S A SPONSORED ADR 88031M109 189,000 116,500 160.69 5,107 151.58 0.0116
2015-05-13 2015-03-31 13F TENARIS S A SPONSORED ADR 88031M109 72,500 -338,400 -82.36 2,030 -83.65 0.0043
2015-02-13 2014-12-31 13F TENARIS S A SPONSORED ADR 88031M109 410,900 115,200 38.96 12,413 -3.92 0.0300
2014-02-14 2013-12-31 13F TENARIS S A SPONSORED ADR 88031M109 295,700 295,700 12,919 0.0309
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.