ATI INC hedge fund holdings
ATINYSE$192.42+1.28 (+0.67% today)
Every quarter, large institutional investment managers with over $100M in U.S.-listed assets under management disclose their U.S. equity holdings through 13F filings. Read together, those filings show which businesses professional capital is moving into and out of.
Price vs funds buying and selling
ATI · close · 13FReported Aug 14, 2026Price vs funds buying and selling data
Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+133.2%). 0 fund reports plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Funds buying · new + increased
Funds selling · reduced + closed
Net buyers vs sellers
Buying = new + increased; selling = reduced + closed. Counts exclude position changes under 5% of the fund's holding last quarter.Price and fund activity data
| Quarter | Funds buying | Funds selling | Bought | Sold | Filers | Reported |
|---|---|---|---|---|---|---|
| Q2 2025 | 175 | 187 | $1.57B | $1.51B | 437 | Aug 14, 2025 |
| Q3 2025 | 173 | 172 | $889M | $1.19B | 443 | Nov 14, 2025 |
| Q4 2025 | 225 | 147 | $1.04B | $1.53B | 538 | Feb 14, 2026 |
| Q1 2026 | 307 | 185 | $3.28B | $3.4B | 643 | May 15, 2026 |
| Q2 2026 | 369 | 201 | $2.95B | $3.2B | 744 | Aug 14, 2026 |
Quarterly action breakdown
Q2 2026
744 filersNew position
143$492M+2.5M sh
Increased
226$2.46B+12.5M sh
Reduced
152-$3.08B-15.6M sh
Out / sold
49-$116M-589K sh
Last 4 quarters · free
Reported Aug 14, 2026
| Fund | Action | Change in dollar | Value | % of portfolio | Reported |
|---|---|---|---|---|---|
| Viking Global Investors LP | Reduce 65.38% | -$429M | $227M | 0.65% | Aug 14, 2026 |
| Capital International Investors | Reduce 36.79% | -$427M | $733M | 0.15% | Aug 12, 2026 |
| Bessemer Group Inc | Added 45245.82% | +$188M | $188M | 0.26% | Aug 12, 2026 |
| Polen Capital Management LLC | New Buy | +$161M | $161M | 1.39% | Aug 4, 2026 |
| Holocene Advisors, LP | Reduce 54.66% | -$118M | $98.1M | 0.22% | Aug 14, 2026 |
| Capital World Investors | Reduce 8.12% | -$91.4M | $1.03B | 0.12% | Aug 12, 2026 |
| DSM Capital Partners LLC | New Buy | +$86.9M | $86.9M | 1.49% | Aug 3, 2026 |
| 1832 Asset Management L.P. | Added 203.26% | +$60.7M | $90.6M | 0.05% | Aug 13, 2026 |
| Thrivent Financial for Lutherans | Added 571.93% | +$56.8M | $66.7M | 0.11% | Aug 14, 2026 |
| Frontier Capital Management Co LLC | Reduce 39.52% | -$54.1M | $82.8M | 0.77% | Aug 14, 2026 |
| Dendur Capital LP | Reduce 21.36% | -$54M | $199M | 10.44% | Aug 14, 2026 |
| Jain Global LLC | Reduce 88.00% | -$45.9M | $6.25M | 0.02% | Aug 14, 2026 |
| Schroder Investment Management Group | Reduce 48.37% | -$38.5M | $41.1M | 0.03% | Aug 13, 2026 |
| Yaupon Capital Management LP | New Buy | +$35.5M | $35.5M | 0.70% | Aug 14, 2026 |
| Emerald Advisers, LLC | Reduce 91.23% | -$32.6M | $3.14M | 0.07% | Aug 5, 2026 |
| Canada Pension Plan Investment Board | Added 91.70% | +$30.3M | $63.4M | 0.04% | Aug 14, 2026 |
| Jupiter Asset Management Ltd | Reduce 40.71% | -$27.4M | $39.9M | 0.20% | Aug 10, 2026 |
| Artemis Investment Management LLP | Added 16.63% | +$23.6M | $166M | 1.48% | Jul 23, 2026 |
| Vaughan Nelson Investment Management, L.P. | Reduce 29.61% | -$22.3M | $53.1M | 0.47% | Jul 16, 2026 |
| Oribel Capital Management, LP | New Buy | +$19M | $19M | 0.58% | Aug 13, 2026 |
| Bridgewater Associates, LP | Added 423.64% | +$18.3M | $22.7M | 0.09% | Aug 14, 2026 |
| Healthcare of Ontario Pension Plan Trust Fund | Added 105.51% | +$18.1M | $35.3M | 0.05% | Aug 13, 2026 |
| Nomura Asset Management International Inc. | Sell 100% | -$17M | $0 | 0.00% | Aug 14, 2026 |
| Public Employees Retirement Association of Colorado | Added 646.75% | +$16.6M | $19.2M | 0.07% | Aug 11, 2026 |
| Nearwater Capital Markets, Ltd | New Buy | +$15.8M | $15.8M | 0.27% | Aug 14, 2026 |
| Square Wave Capital, LLC | Added 21.40% | +$15.5M | $87.7M | 13.08% | Aug 14, 2026 |
| Aventail Capital Group, LP | Reduce 40.16% | -$14.7M | $21.9M | 1.25% | Aug 14, 2026 |
| Premier Fund Managers Ltd | New Buy | +$14.2M | $14.2M | 1.29% | Jul 22, 2026 |
| Loomis Sayles & Co L P | Reduce 11.03% | -$14.2M | $115M | 0.14% | Aug 14, 2026 |
| Agf Management Ltd | New Buy | +$13.9M | $13.9M | 0.05% | Aug 10, 2026 |
| Emerald Mutual Fund Advisers Trust | Sell 100% | -$13.7M | $0 | 0.00% | Aug 5, 2026 |
| Senator Investment Group LP | Reduce 44.83% | -$12.8M | $15.8M | 0.58% | Aug 12, 2026 |
| Lord, Abbett & Co. LLC | Reduce 31.58% | -$11.3M | $24.5M | 0.07% | Aug 14, 2026 |
| Keystone Investors Pte Ltd | Added 171.17% | +$11.3M | $17.9M | 0.96% | Aug 14, 2026 |
| Voleon Capital Management LP | Added 55.99% | +$10.9M | $30.4M | 0.55% | Aug 14, 2026 |
| KLCM Advisors, Inc. | Reduce 21.06% | -$10.9M | $40.9M | 3.22% | Aug 6, 2026 |
| Anomaly Capital Management, LP | Sell 100% | -$10.9M | $0 | 0.00% | Aug 14, 2026 |
| First Trust Advisors LP | Added 59.12% | +$10.9M | $29.2M | 0.02% | Aug 11, 2026 |
| Fisher Asset Management, LLC | Reduce 5.64% | -$10.3M | $172M | 0.05% | Aug 4, 2026 |
| ING Groep NV | Reduce 12.50% | -$9.3M | $65.1M | 0.32% | Aug 13, 2026 |
| Jennison Associates LLC | New Buy | +$9.11M | $9.11M | 0.01% | Aug 3, 2026 |
| Epoch Investment Partners, Inc. | Added 50.18% | +$8.47M | $25.3M | 0.14% | Aug 13, 2026 |
| Worldquant Millennium Advisors LLC | Added 67.02% | +$7.66M | $19.1M | 0.07% | Aug 14, 2026 |
| Natixis | Added 200.72% | +$7.24M | $10.8M | 0.04% | Aug 13, 2026 |
| Empowered Funds, LLC | Added 63.26% | +$6.98M | $18M | 0.09% | Aug 17, 2026 |
| Segall Bryant & Hamill, LLC | Reduce 12.52% | -$6.85M | $47.8M | 0.57% | Aug 12, 2026 |
| Natixis Advisors, LLC | Reduce 26.30% | -$6.44M | $18.1M | 0.02% | Aug 14, 2026 |
| KR Capital LP | New Buy | +$6.37M | $6.37M | 0.63% | Aug 14, 2026 |
| Concentric Capital Strategies, LP | New Buy | +$6.31M | $6.31M | 0.35% | Aug 14, 2026 |
| Focus Partners Advisor Solutions, LLC | Reduce 90.24% | -$6.26M | $678K | 0.01% | Aug 6, 2026 |
| Mountaineer Partners Management, LLC | Reduce 34.17% | -$6.18M | $11.9M | 8.66% | Aug 14, 2026 |
| Qsemble Capital Management, LP | Sell 100% | -$6.11M | $0 | 0.00% | Aug 3, 2026 |
| Aware Super Pty Ltd as trustee of Aware Super | New Buy | +$5.69M | $5.69M | 0.08% | Jul 29, 2026 |
| Van Eck Associates Corp | New Buy | +$5.51M | $5.51M | 0.00% | Aug 14, 2026 |
| Sequoia Financial Advisors, LLC | Added 485.79% | +$5.48M | $6.61M | 0.03% | Jul 17, 2026 |
| Retirement Systems of Alabama | Reduce 8.14% | -$5.01M | $56.5M | 0.17% | Jul 28, 2026 |
| Capital International, Inc. | Reduce 10.34% | -$4.79M | $41.5M | 0.29% | Aug 12, 2026 |
| USS Investment Management Ltd | New Buy | +$4.49M | $4.49M | 0.02% | Aug 11, 2026 |
| Taikang Asset Management (Hong Kong) Co Ltd | New Buy | +$4.34M | $4.34M | 0.39% | Aug 12, 2026 |
| Channing Capital Management, LLC | Reduce 27.23% | -$4.19M | $11.2M | 0.26% | Jul 29, 2026 |
| Capital International Sarl | Added 156.61% | +$4.06M | $6.64M | 0.09% | Aug 12, 2026 |
| Soros Fund Management LLC | Added 38.82% | +$4.04M | $14.5M | 0.18% | Aug 14, 2026 |
| Freemont Management S.A. | Sell 100% | -$3.97M | $0 | 0.00% | Aug 11, 2026 |
| Hawk Ridge Capital Management LP | Added 10.29% | +$3.76M | $40.3M | 1.29% | Aug 14, 2026 |
| Dymon Asia Capital (Singapore) Pte. Ltd. | Added 81.31% | +$3.71M | $8.26M | 0.35% | Jul 23, 2026 |
| Florida Financial Advisors, LLC | New Buy | +$3.41M | $3.41M | 0.58% | Aug 10, 2026 |
| Credit Agricole S A | Added 25.75% | +$3.35M | $16.4M | 0.03% | Aug 14, 2026 |
| Cookson Peirce & Co Inc | Added 58.36% | +$3.33M | $9.04M | 0.30% | Jul 23, 2026 |
| Signature Estate & Investment Advisors LLC | Reduce 16.70% | -$3.29M | $16.4M | 0.30% | Jul 14, 2026 |
| SteelPeak Wealth, LLC | New Buy | +$3.06M | $3.06M | 0.08% | Jul 13, 2026 |
| Capital International Ltd | New Buy | +$2.98M | $2.98M | 0.10% | Aug 12, 2026 |
| S Squared Technology, LLC | Reduce 27.27% | -$2.96M | $7.88M | 2.45% | Aug 14, 2026 |
| Graham Capital Management, L.P. | New Buy | +$2.91M | $2.91M | 0.05% | Aug 14, 2026 |
| Sendero Wealth Management, LLC | New Buy | +$2.72M | $2.72M | 0.27% | Aug 4, 2026 |
| Faithward Advisors, LLC | New Buy | +$2.69M | $2.69M | 0.33% | Aug 12, 2026 |
| South Dakota Investment Council | Added 256.53% | +$2.68M | $3.72M | 0.06% | Aug 11, 2026 |
| Ensign Peak Advisors, Inc | Reduce 64.25% | -$2.64M | $1.47M | 0.00% | Aug 14, 2026 |
| Campbell & CO Investment Adviser LLC | Added 254.65% | +$2.63M | $3.66M | 0.19% | Aug 3, 2026 |
| Susquehanna Fundamental Investments, LLC | Added 15.35% | +$2.5M | $18.8M | 0.35% | Aug 14, 2026 |
| Xponance LLC | Added 73.03% | +$2.5M | $5.92M | 0.04% | Aug 10, 2026 |
| Tidal Investments LLC | Reduce 11.80% | -$2.41M | $18M | 0.03% | Aug 13, 2026 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | New Buy | +$2.4M | $2.4M | 0.00% | Aug 14, 2026 |
| Donoghue Forlines LLC | Sell 100% | -$2.36M | $0 | 0.00% | Aug 7, 2026 |
| MML Investors Services, LLC | Added 46.52% | +$2.32M | $7.32M | 0.01% | Aug 7, 2026 |
| Park Avenue Securities LLC | Added 61.50% | +$2.31M | $6.06M | 0.04% | Jul 20, 2026 |
| Marathon Partners Equity Management, LLC | Reduce 65.71% | -$2.27M | $1.18M | 1.10% | Aug 14, 2026 |
| Guggenheim Capital LLC | Reduce 10.86% | -$2.23M | $18.3M | 0.12% | Aug 12, 2026 |
| Freestone Grove Partners LP | Added 1.95% | +$2.21M | $116M | 0.74% | Aug 14, 2026 |
| Polymer Capital Management (US) LLC | Added 282.91% | +$2.21M | $2.98M | 0.40% | Aug 14, 2026 |
| Williamson Legacy Group, LLC | New Buy | +$2.18M | $2.18M | 1.08% | Aug 13, 2026 |
| Treasurer of the State of North Carolina | Added 18.77% | +$2.13M | $13.5M | 0.03% | Aug 14, 2026 |
| VANGUARD ASSET MANAGEMENT, Ltd | Added 10.02% | +$2.07M | $22.7M | 0.02% | Aug 13, 2026 |
| Aigen Investment Management, LP | Sell 100% | -$2.05M | $0 | 0.00% | Aug 14, 2026 |
| Inspire Investing, LLC | Reduce 59.62% | -$2M | $1.36M | 0.06% | Aug 12, 2026 |
| Tema ETFs LLC | Reduce 11.34% | -$1.82M | $14.2M | 0.46% | Jul 10, 2026 |
| Covea Finance | Reduce 22.89% | -$1.81M | $6.11M | 0.19% | Jul 13, 2026 |
| Gotham Asset Management, LLC | Added 3.49% | +$1.79M | $53.1M | 0.12% | Aug 14, 2026 |
| Rafferty Asset Management, LLC | Reduce 24.23% | -$1.74M | $5.45M | 0.01% | Aug 14, 2026 |
| Jefferies Financial Group Inc. | Sell 100% | -$1.68M | $0 | 0.00% | Aug 17, 2026 |
| SummitTX Capital, L.P. | New Buy | +$1.57M | $1.57M | 0.04% | Aug 14, 2026 |