Position in ATI
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$172,513,746
+$82,439,096 QoQ
Shares Held
875,260
+41.3% QoQ
Ownership
0.643%
of shares outstanding
% of Portfolio
0.14%
of 13F equity value
Holder Rank
#29
of 790 holders
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in ATI Over Time
Shares Held
Position Value (USD)
Derivatives in ATI
reported options exposure · as of Jun 30, 2026CallValue
$1,103,760
CallShares
5,600
PutValue
$473,040
PutShares
2,400
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 Jun 30, 2026MILLENNIUM MANAGEMENT LLC holds $304,673,179 across 10 Metal Fabrication names. ATI ranks #1 (56.6% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ATI |
Ati Inc
This page
|
875,260 | $172,513,746 | |
| 2 | CRS |
Carpenter Technology Corp
|
122,091 | $75,310,612 | |
| 3 | WOR |
Worthington Enterprises, Inc.
|
278,294 | $14,961,085 | |
| 4 | MLI |
Mueller Industries Inc
|
157,812 | $9,699,914 | |
| 5 | MEC |
Mayville Engineering Company, Inc.
|
253,677 | $9,502,740 | |
| 6 | CMC |
COMMERCIAL METALS Co
|
145,290 | $9,116,947 | |
| 7 | PRLB |
Proto Labs Inc
|
92,960 | $7,577,169 | |
| 8 | IIIN |
Insteel Industries Inc
|
141,487 | $4,272,907 |
All Filings in ATI
Export CSV
36 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $473,040 | 2,400 | Put | Sole | 2026-08-14 | |
| 2026-06-30 | $172,513,746 | 875,260 | Shares | Sole | 2026-08-14 | |
| 2026-06-30 | $1,103,760 | 5,600 | Call | Sole | 2026-08-14 | |
| 2026-03-31 | $363,650 | 2,500 | Put | Sole | 2026-05-15 | |
| 2026-03-31 | $741,846 | 5,100 | Call | Sole | 2026-05-15 | |
| 2026-03-31 | $90,074,650 | 619,240 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $58,169,663 | 506,881 | Shares | Sole | 2026-02-17 | |
| 2025-12-31 | $1,216,456 | 10,600 | Call | Sole | 2026-02-17 | |
| 2025-12-31 | $562,324 | 4,900 | Put | Sole | 2026-02-17 | |
| 2025-09-30 | $27,459,651 | 337,591 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $24,936,459 | 288,817 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $71,076,153 | 1,366,061 | Shares | Sole | 2025-05-15 | |
| 2025-03-31 | $239,338 | 4,600 | Put | Sole | 2025-05-15 | |
| 2024-12-31 | $5,500,532 | 99,937 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $106,722,520 | 1,595,016 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $107,845,758 | 1,944,919 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $38,052,365 | 743,646 | Shares | Sole | 2024-05-15 | |
| 2024-03-31 | $511,700 | 10,000 | Put | Sole | 2024-05-15 | |
| 2023-12-31 | $12,178,821 | 267,843 | Shares | Sole | 2024-02-14 | |
| 2023-12-31 | $481,982 | 10,600 | Put | Sole | 2024-02-14 | |
| 2023-09-30 | $14,274,358 | 346,886 | Shares | Sole | 2023-11-14 | |
| 2023-09-30 | $1,292,110 | 31,400 | Put | Sole | 2023-11-14 | |
| 2023-06-30 | $23,297,312 | 526,731 | Shares | Sole | 2023-08-14 | |
| 2023-06-30 | $2,905,911 | 65,700 | Put | Sole | 2023-08-14 | |
| 2023-03-31 | $17,285,334 | 438,047 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $30,389,268 | 1,017,725 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $29,428,584 | 1,105,922 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $76,362,556 | 3,362,508 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $46,563,669 | 1,734,861 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $24,731,197 | 1,552,492 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $27,988,755 | 1,683,028 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $11,642,952 | 558,415 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $14,820,069 | 703,707 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $24,475,479 | 1,459,480 | Shares | Sole | 2021-02-16 | |
| 2020-06-30 | $4,507,210 | 442,317 | Shares | Sole | 2020-08-14 | |
| 2020-03-31 | $3,641,315 | 428,390 | Shares | Sole | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||