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D. E. Shaw & Co., Inc.

Position in ATI — Ati Inc

CIK 1009207 New York, NY

Position in ATI

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$253,479,904
+$21,363,919 QoQ
Shares Held
1,742,609
-13.8% QoQ
Ownership
1.28%
of shares outstanding
% of Portfolio
0.22%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 98% Shared 0% None 2%

Common Shares in ATI Over Time

Shares Held

Position Value (USD)

Derivatives in ATI

reported options exposure · as of Mar 31, 2026
CallValue
$1,396,416
CallShares
9,600
PutValue
$0
PutShares
0

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, 2026

D. E. Shaw & Co., Inc. holds $386,370,613 across 10 Metal Fabrication names. ATI ranks #1 (65.6% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 ATI
Ati Inc
This page
1,742,609 $253,479,904

All Filings in ATI

Export CSV
47 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $1,396,416 9,600
2026-03-31 $253,479,904 1,742,609
2025-12-31 $232,115,985 2,022,621
2025-12-31 $1,411,548 12,300
2025-12-31 $619,704 5,400
2025-09-30 $1,000,482 12,300
2025-09-30 $439,236 5,400
2025-09-30 $246,224,475 3,027,102
2025-06-30 $233,118 2,700
2025-06-30 $303,394,270 3,513,948
2025-03-31 $85,292,466 1,639,294
2024-12-31 $80,557,258 1,463,613
2024-09-30 $85,801,435 1,282,341
2024-06-30 $61,857,801 1,115,560
2024-03-31 $29,757,810 581,548
2023-12-31 $56,080,742 1,233,357
2023-09-30 $3,106,825 75,500
2023-09-30 $50,710,667 1,232,337
2023-06-30 $97,879,043 2,212,956
2023-06-30 $3,339,365 75,500
2023-03-31 $2,979,230 75,500
2023-03-31 $106,982,294 2,711,158
2022-12-31 $2,137,976 71,600
2022-12-31 $98,713,875 3,305,890
2022-09-30 $5,271,441 198,100
2022-09-30 $90,396,750 3,397,097
2022-06-30 $2,872,815 126,500
2022-06-30 $78,536,811 3,458,248
2022-03-31 $97,144,507 3,619,393
2022-03-31 $3,395,260 126,500
2021-12-31 $57,844,410 3,631,162
2021-09-30 $67,171,214 4,039,159
2021-09-30 $1,496,700 90,000
2021-06-30 $1,876,500 90,000
2021-06-30 $79,206,835 3,798,889
2021-03-31 $80,571,747 3,825,819
2021-03-31 $1,895,400 90,000
2020-12-31 $68,009,325 4,055,416
2020-12-31 $1,509,300 90,000
2020-09-30 $213,640 24,500
2020-09-30 $41,459,449 4,754,524
2020-06-30 $153,869 15,100
2020-06-30 $39,611,433 3,887,285
2020-06-30 $192,591 18,900
2020-03-31 $128,350 15,100
2020-03-31 $160,650 18,900
2020-03-31 $15,309,307 1,801,095