ATI Institutional Ownership
Who owns Ati Inc and what the big funds did with it last quarter, from every SEC 13F filing. 794 funds reported holding ATI at Jun 30, 2026, together owning 94.5% of the company.
- ▲473 buying vs 275 selling
- ▲Held by funds +0.7 pts
- ▲Funds holding +113
- ▲Superinvestors: 4 added, 3 cut
- ▼Put/call 0.94 to 1.52
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 794 | 681 | +16.6% |
| In funds' top 10 | 17 | 13 | +30.8% |
| 13F shares | 128M | 127M | +0.7% |
| Held by funds | 94.5% | 93.8% | +0.7 pts |
| New positions | 167 | 156 | +7.1% |
| Increased | 306 | 243 | +25.9% |
| Reduced | 221 | 189 | +16.9% |
| Sold out | 54 | 52 | +3.8% |
| Calls (shares) | 266K | 326K | −18.4% |
| Puts (shares) | 404K | 305K | +32.2% |
| Put/call ratio | 1.52 | 0.94 | +61.9% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in ATI
All superinvestors →
Who owns ATI
share of fund held shares- Index and passive funds37.4%
- Active managers and hedge funds48.7%
- Banks and brokers10.5%
- Pensions, insurers and other3.4%
The top 10 holders own 48.0% of all ATI shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
271 funds changed their position- Assenagon Asset Management S.A.Trimmed−476K sh
- DekaBank Deutsche GirozentraleNew+299K sh
- Sumitomo Mitsui Trust Group, Inc.New+252K sh
- ASR Vermogensbeheer N.V.New+49K sh
- Robeco Institutional Asset Management B.V.Added+45K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 13.77% | 18.7M | $3.7B | +2.3M |
| 2 | Vanguard Portfolio Management LLC | 4.58% | 6.2M | $1.2B | +398K |
| 3 | Vanguard Capital Management LLC | 4.54% | 6.2M | $1.2B | +38K |
| 4 | Capital World Investors | 3.86% | 5.2M | $1B | −464K |
| 5 | State Street Corp | 3.86% | 5.2M | $1B | −144K |
| 6 | Capital Research Global Investors | 3.75% | 5.1M | $1B | −1.1M |
| 7 | Fmr LLC | 3.67% | 5M | $983M | −258K |
| 8 | Capital International Investors | 2.74% | 3.7M | $733M | −2.2M |
| 9 | Invesco Ltd. | 2.54% | 3.4M | $680M | −406K |
| 10 | Geode Capital Management, LLC | 2.04% | 2.8M | $548M | −170K |
- BlackRock, Inc.+2.3M sh+$447M
- Norges Bank+1.7M sh+$343M
- Qube Research & Technologies Ltd+1.3M sh+$253M
- Bessemer Group Inc+953K sh+$188M
- Polen Capital Management LLC+819K sh+$161M
- Assenagon Asset Management S.A.+730K sh+$144M
- Price T Rowe Associates Inc /md/+693K sh+$137M
- Two Sigma Investments, LP+619K sh+$122M
- Viking Global Investors LP−2.2M sh−$429M
- Capital International Investors−2.2M sh−$427M
- Capital Research Global Investors−1.1M sh−$210M
- UBS Group AG−954K sh−$188M
- D. E. Shaw & Co., Inc.−927K sh−$183M
- PNC Financial Services Group, Inc.−797K sh−$157M
- Point72 Asset Management, L.P.−692K sh−$136M
- Prudential Financial Inc−629K sh−$124M
ATI institutional ownership FAQ
Who owns the most ATI stock?
In Q2 2026 13F filings the largest holder of ATI was BlackRock, Inc., followed by Vanguard Portfolio Management LLC and Vanguard Capital Management LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of ATI is owned by institutions?
Funds that file 13F reports held 94.5% of ATI's shares at Jun 30, 2026, compared with 93.8% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying ATI?
In Q2 2026, 473 funds bought ATI (167 of them new positions) and 275 sold (54 sold out completely). Among well known investors, 4 added and 3 cut. Our fund sentiment for ATI is bullish.
What is ATI's institutional put/call ratio?
Funds reported $79.5M of ATI puts against $52.5M of calls, a put/call ratio of 1.52 (0.94 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this ATI ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.