Ole Andreas Halvorsen's Viking Global Investors reduced its Allegheny Technologies Incorporated (ATI) position by 65% in 2026 Q2, according to the 13F-HR filed with the SEC on August 14, 2026. The stake went from 3.33M to 1.15M shares, worth about $227.4M, and from 1.36% to 0.65% of the reported portfolio.
What did the 2026 Q2 filing report for ATI?
As of June 30, 2026, from the 13F-HR filed August 14, 2026.
| Before | After | |
|---|---|---|
| Shares | 3.33M | 1.15M |
| Shares sold | -2.18M (65%) | |
| Reported value | $484.8M | $227.4M |
| Portfolio weight | 1.36% | 0.65% |
| Rank in portfolio | 51st of 90 |
How much did Ole Andreas Halvorsen cut ATI?
Ole Andreas Halvorsen sold 2.18M shares of ATI during 2026 Q2, cutting the stake from 3.33M to 1.15M. The reported value of the position fell by about $257.4M, from about $484.8M to about $227.4M.
Where does ATI sit in the Ole Andreas Halvorsen portfolio?
ATI ranks 51st of 90 stock positions in the Ole Andreas Halvorsen portfolio at 0.65%, below the fund's average stock position of 1%. The largest stock position is V at 6.25%. Next come TSM at 4.31% and APD at 3.96%. The three largest stocks together are 14.53% of the book. The ATI cut was the 17th largest of the quarter's 101 position changes by percent change to portfolio. Across the 2026 Q2 portfolio, Ole Andreas Halvorsen reported 90 stock positions, with 34 opened and 21 closed. The total portfolio value is about $35.1B, down 2% from the prior quarter.
How long has Ole Andreas Halvorsen held ATI?
Ole Andreas Halvorsen first reported ATI in the quarter ended March 31, 2026. Every reported trade is on the Ole Andreas Halvorsen ATI trade history page.
FAQ
How many ATI shares did Ole Andreas Halvorsen sell in 2026 Q2?
Ole Andreas Halvorsen sold 2.18M shares of ATI, 65% of the position, leaving 1.15M shares.
What remains of the ATI position of Ole Andreas Halvorsen?
Ole Andreas Halvorsen still holds 1.15M shares of ATI, worth about $227.4M at June 30, 2026 prices.
How much of the Ole Andreas Halvorsen portfolio is ATI now?
ATI is 0.65% of the Ole Andreas Halvorsen portfolio, down from 1.36% a quarter earlier.