Position in ATI
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$2,585,551
+$2,359,819 QoQ
Shares Held
17,775
+803.7% QoQ
Ownership
0.013%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
24 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in ATI Over Time
Shares Held
Position Value (USD)
Derivatives in ATI
reported options exposure · as of Mar 31, 2026CallValue
$480,018
CallShares
3,300
PutValue
$494,564
PutShares
3,400
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Metal Fabrication
Industrials · as of Mar 31, 2026TWO SIGMA INVESTMENTS, LP holds $48,074,942 across 11 Metal Fabrication names. ATI ranks #5 (5.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | CRS |
Carpenter Technology Corp
|
40,524 | $15,972,534 | |
| 2 | WOR |
Worthington Enterprises, Inc.
|
203,193 | $10,594,483 | |
| 3 | IIIN |
Insteel Industries Inc
|
182,678 | $6,139,807 | |
| 4 | RYZ |
Ryerson Holding Corp
|
268,541 | $6,036,801 | |
| 5 | ATI |
Ati Inc
This page
|
17,775 | $2,585,551 | |
| 6 | ESAB |
ESAB Corp
|
26,452 | $2,556,850 | |
| 7 | CMC |
COMMERCIAL METALS Co
|
19,600 | $1,204,028 | |
| 8 | MLI |
Mueller Industries Inc
|
20,079 | $1,112,376 |
All Filings in ATI
Export CSV
32 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $480,018 | 3,300 | Call | Sole | 2026-05-15 | |
| 2026-03-31 | $2,585,551 | 17,775 | Shares | Sole | 2026-05-15 | |
| 2026-03-31 | $494,564 | 3,400 | Put | Sole | 2026-05-15 | |
| 2025-12-31 | $225,732 | 1,967 | Shares | Sole | 2026-02-17 | |
| 2025-12-31 | $459,040 | 4,000 | Put | Sole | 2026-02-17 | |
| 2025-12-31 | $413,136 | 3,600 | Call | Sole | 2026-02-17 | |
| 2025-06-30 | $22,159,420 | 256,653 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $7,151,419 | 137,448 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $13,041,728 | 236,950 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $58,303,701 | 871,375 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $59,288,470 | 1,069,224 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $31,039,977 | 606,605 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $20,066,320 | 441,309 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $1,768,092 | 42,967 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $2,143,208 | 48,456 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $4,906,890 | 124,351 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $4,395,571 | 147,206 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $7,652,317 | 287,573 | Shares | Sole | 2022-11-14 | |
| 2022-09-30 | $1,330,500 | 50,000 | Put | Sole | 2022-11-14 | |
| 2022-06-30 | $1,974,384 | 86,939 | Shares | Sole | 2022-08-15 | |
| 2022-06-30 | $1,135,500 | 50,000 | Put | Sole | 2022-08-15 | |
| 2022-03-31 | $17,626,445 | 656,723 | Shares | Sole | 2022-05-16 | |
| 2022-03-31 | $9,394,000 | 350,000 | Put | Sole | 2022-05-16 | |
| 2021-12-31 | $4,779,000 | 300,000 | Put | Sole | 2022-02-14 | |
| 2021-12-31 | $1,844,534 | 115,790 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $2,873,115 | 172,767 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $2,636,982 | 126,474 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $19,698,070 | 935,331 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $16,902,784 | 1,007,918 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $8,014,979 | 919,149 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $6,330,782 | 621,274 | Shares | Sole | 2020-08-14 | |
| 2020-03-31 | $5,817,740 | 684,440 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||