Which funds own ATI
Ati Inc in the Q2 2026 filings. At least 18 of the 91 current managers on file reported a position, worth $3.3bn between them. It is among the largest positions of fewer than a fifth of the current managers on file. Buying and selling roughly cancelled this quarter, which is what a name looks like when the argument is still live.
- Managers holding
- 18
- at least, of 91 current
- Combined value
- $3.3bn
- as reported
- Opened
- 1
- new this quarter
- Added to
- 8
- already held
- Trimmed or sold out
- 10
- 1 sold out entirely
Only each manager’s largest 200 positions are listed here, so a smaller holder may be missing.
Managers reporting a position
Largest first. Weight is the share of that manager’s whole reported book, which is the number worth quoting: $400m is a rounding error in one book and a defining bet in another.
| Manager | Value | Weight | Shares | Change on the quarter | Action |
|---|---|---|---|---|---|
| Capital World Investors Long-only · $846bn book | $1.0bn | 0.1% | 5,249,249 | +$204m-463,680 | Trimmed |
| Capital Research Global Investors Long-only · $717bn book | $1.0bn | 0.1% | 5,093,768 | +$108m-1,066,339 | Trimmed |
| Point72 Asset Management LP Multi-strategy · $90.7bn book | $245m | 0.3% | 1,240,348 | -$37m-692,231 | Trimmed |
| Viking Global Investors LP Long/short equity · $35.1bn book | $227m | 0.6% | 1,153,880 | -$257m-2,178,963 | Trimmed |
| Polen Capital Management LLC Long-only · $11.6bn book | $162m | 1.4% | 819,236 | opened819,236 | New |
| Marshall Wace LLP Quantitative · $127bn book | $140m | 0.1% | 709,552 | +$62m+173,074 | Added |
| Freestone Grove Partners LP Multi-strategy · $15.6bn book | $116m | 0.7% | 587,093 | +$32m+11,220 | Added |
| Balyasny Asset Management LLC Multi-strategy · $80.2bn book | $101m | 0.1% | 514,088 | -$23m-337,576 | Trimmed |
| Holocene Advisors LP Long/short equity · $44.4bn book | $98m | 0.2% | 497,600 | -$62m-599,988 | Trimmed |
| GAMCO Investors Inc Activist · $11.1bn book | $71m | 0.6% | 358,000 | +$18m-3,500 | Trimmed |
| Rokos Capital Management LLP Macro · $26.8bn book | $36m | 0.1% | 180,935 | +$24m+100,592 | Added |
| Schonfeld Strategic Advisors LLC Multi-strategy · $27.9bn book | $35m | 0.1% | 177,751 | +$32m+154,208 | Added |
| Brevan Howard Capital Management LP Macro · $13.5bn book | $23m | 0.2% | 117,553 | +$14m+54,843 | Added |
| Bridgewater Associates LP Macro · $24.4bn book | $23m | 0.1% | 114,940 | +$20m+92,990 | Added |
| Soros Fund Management LLC Macro · $8.1bn book | $15m | 0.2% | 73,339 | +$6.8m+20,507 | Added |
| Moore Capital Management LP Macro · $6.7bn book | $6.1m | 0.1% | 30,927 | +$1.2m-2,989 | Trimmed |
| Quantbot Technologies LP Quantitative · $2.5bn book | $5.4m | 0.2% | 27,156 | +$2.2m+5,524 | Added |
| ARK Investment Management LLC Long-only · $15.4bn book | $100k | 0.0% | 487 | unchanged-192 | Trimmed |
Sold out of this quarter
Valued at what the position was worth in the previous filing, because by this one it is gone.
- Woodline Partners LP · Long/short equity$13m held before
Ownership through time
At least 33 of the 95 managers whose filings are on file listed ATI in Q2 2026, against 2 in Q2 2013. 6 managers more than in Q1 2026: 1 started a position; 6 listed it again; 1 no longer listed it among the positions read, which can mean a holding below the listed range, a filing that reported no holdings, or a filing not yet made.
Each manager’s largest 500 positions a quarter are read, so a small holding in a very large book can be missing, and a manager is counted as leaving only where its own filing shows it.
- Q2 2013: 2
- Q3 2013: 1
- Q4 2013: 2
- Q1 2014: 4
- Q2 2014: 2
- Q3 2014: 3
- Q4 2014: 3
- Q1 2015: 1
- Q3 2015: 2
- Q4 2015: 2
- Q1 2016: 3
- Q3 2016: 1
- Q4 2016: 3
- Q1 2017: 5
- Q2 2017: 7
- Q3 2017: 9
- Q4 2017: 9
- Q1 2018: 9
- Q2 2018: 10
- Q3 2018: 9
- Q4 2018: 7
- Q1 2019: 8
- Q2 2019: 10
- Q3 2019: 11
- Q4 2019: 9
- Q1 2020: 8
- Q2 2020: 8
- Q3 2020: 7
- Q4 2020: 7
- Q1 2021: 7
- Q2 2021: 6
- Q3 2021: 8
- Q4 2021: 7
- Q1 2022: 8
- Q2 2022: 8
- Q3 2022: 12
- Q4 2022: 11
- Q1 2023: 10
- Q2 2023: 12
- Q3 2023: 11
- Q4 2023: 12
- Q1 2024: 11
- Q2 2024: 19
- Q3 2024: 23
- Q4 2024: 16
- Q1 2025: 21
- Q2 2025: 19
- Q3 2025: 18
- Q4 2025: 19
- Q1 2026: 27
- Q2 2026: 33
- Q2 2013: $96m
- Q3 2013: $98m
- Q4 2013: $239m
- Q1 2014: $272m
- Q2 2014: $272m
- Q3 2014: $31m
- Q4 2014: $38m
- Q1 2015: $223k
- Q3 2015: $821k
- Q4 2015: $28m
- Q1 2016: $34m
- Q3 2016: $934k
- Q4 2016: $23m
- Q1 2017: $56m
- Q2 2017: $103m
- Q3 2017: $188m
- Q4 2017: $212m
- Q1 2018: $249m
- Q2 2018: $319m
- Q3 2018: $340m
- Q4 2018: $311m
- Q1 2019: $403m
- Q2 2019: $426m
- Q3 2019: $339m
- Q4 2019: $350m
- Q1 2020: $82m
- Q2 2020: $92m
- Q3 2020: $85m
- Q4 2020: $167m
- Q1 2021: $218m
- Q2 2021: $171m
- Q3 2021: $143m
- Q4 2021: $113m
- Q1 2022: $266m
- Q2 2022: $399m
- Q3 2022: $433m
- Q4 2022: $451m
- Q1 2023: $436m
- Q2 2023: $504m
- Q3 2023: $409m
- Q4 2023: $567m
- Q1 2024: $598m
- Q2 2024: $903m
- Q3 2024: $1.8bn
- Q4 2024: $735m
- Q1 2025: $852m
- Q2 2025: $2.0bn
- Q3 2025: $1.7bn
- Q4 2025: $3.1bn
- Q1 2026: $5.4bn
- Q2 2026: $6.4bn
Between the quarter ends of Q1 2026 and Q2 2026. Each change in shares is valued at the Q2 2026 price, so the price’s own move is left out; a 13F shows the two quarter ends, not when in between anything was bought or sold.
Started in Q2 2026
Largest increases, by shares
- Polen Capital Management LLCnew: 819,236 shares+$161m
- Millennium Management LLC619,240 to 875,260 shares+$50m
- AQR Capital Management LLC1,222,580 to 1,432,935 shares+$41m
- Marshall Wace LLP536,478 to 709,552 shares+$34m
- Rokos Capital Management LLP80,343 to 180,935 shares+$20m
Largest decreases, by shares
- Viking Global Investors LP3,332,843 to 1,153,880 shares-$429m
- Capital Research Global Investors6,160,107 to 5,093,768 shares-$210m
- D. E. Shaw & Co.1,742,609 to 815,585 shares-$183m
- Point72 Asset Management LP1,932,579 to 1,240,348 shares-$136m
- Holocene Advisors LP1,097,588 to 497,600 shares-$118m
Left it
No manager on file is shown leaving it.
What ATI is worth
Knowing who owns it is half the question. The other half is what it is worth against the companies it trades beside, which is the one an interviewer will follow up with.
Build the comp set around ATI →How much of the picture this is
A Form 13F reports US-listed long equity and nothing else: no shorts, no bonds, no cash and no non-US listings. It arrives forty-five days after the quarter ends, so a manager who sold in July still shows the position in a filing published in August. This page reads the managers on file here rather than every filer in the market, and each manager’s largest positions rather than the whole table, so a small position in a very large book may not appear. Say “their last filing showed” rather than “they own”, and the distinction will do you credit.
What to do with a name the funds are buying
Knowing who owns something is the start of a pitch, not the pitch. The next questions are what it is worth and why they were buying.
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The holdings, every quarter, and the week between
One email a week on what moved in the market and what it means for the people interviewing into it, with the 13F changes the quarter they are filed.
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