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

SecurityTS / Tenaris S.A. - Depositary Receipt (Common Stock)
InstitutionQuantinno Capital Management LP
Latest Disclosed Ownership146,347 shares
Latest Disclosed Value $ 8,514,482
Quantinno Capital Management LP reports 20.87% increase in ownership of TS / Tenaris S.A. - Depositary Receipt (Common Stock)

On May 15, 2026 - Quantinno Capital Management LP filed a 13F-HR form disclosing ownership of 146,347 shares of Tenaris S.A. - Depositary Receipt (Common Stock) (US:TS) valued at $8,514,468 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 121,076 shares of Tenaris S.A. - Depositary Receipt (Common Stock). This represents a change in shares of 20.87% during the quarter. The current value of the position is $9,369,135 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 146,347 25,271 20.87 8,514 82.90 0.0142
2026-02-17 2025-12-31 13F TENARIS S A SPONSORED ADS 88031M109 121,076 25,110 26.17 4,655 35.64 0.0093
2025-11-14 2025-09-30 13F TENARIS S A SPONSORED ADS 88031M109 95,966 28,714 42.70 3,433 36.46 0.0094
2025-08-14 2025-06-30 13F TENARIS S A SPONSORED ADS 88031M109 67,252 8,618 14.70 2,515 9.68 0.0109
2025-05-12 2025-03-31 13F TENARIS S A SPONSORED ADS 88031M109 58,634 12,146 26.13 2,293 30.58 0.0149
2025-02-14 2024-12-31 13F TENARIS S A SPONSORED ADS 88031M109 46,488 14,473 45.21 1,757 72.66 0.0173
2024-11-14 2024-09-30 13F TENARIS S A SPONSORED ADS 88031M109 32,015 5,927 22.72 1,018 27.76 0.0132
2024-08-14 2024-06-30 13F TENARIS S A SPONSORED ADS 88031M109 26,088 1,275 5.14 796 -18.28 0.0143
2024-05-14 2024-03-31 13F TENARIS S A SPONSORED ADS 88031M109 24,813 1,914 8.36 974 22.36 0.0212
2024-02-14 2023-12-31 13F TENARIS S A SPONSORED ADS 88031M109 22,899 7,591 49.59 796 64.46 0.0279
2023-11-14 2023-09-30 13F TENARIS S A SPONSORED ADS 88031M109 15,308 2,890 23.27 484 30.11 0.0220
2023-08-04 2023-06-30 13F TENARIS S A SPONSORED ADS 88031M109 12,418 -1,188 -8.73 372 -3.88 0.0212
2023-05-03 2023-03-31 13F TENARIS S A SPONSORED ADS 88031M109 13,606 5,345 64.70 387 33.45 0.0256
2023-02-13 2022-12-31 13F TENARIS S A SPONSORED ADS 88031M109 8,261 8,261 290 0.0216
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.