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Of the 19 tracked institutions holding ATI, 10 have a 3-year clone track record — 8 of them beat the S&P. Average holder's clone alpha: +3.8pt. It's a gauge of who owns the name, not just how many.
Among the 19 tracked institutional investors we monitor, ATI (ATI INC) is held with a combined value of $9.67B across 54,426,841 shares. The largest holder is BlackRock, Inc. with a position worth $3.69B (0.05% of their portfolio). 3 funds opened new positions in the most recent quarter. 9 funds increased their holdings. 8 funds reduced their position.
Total Institutional Value
$9.67B
Total Shares Held
54,426,841
Institutional Holders
19
% of Shares Outstanding
39.9%
of 136.17M shares · SEC 2026-08-03
Days to Cover
2.0-6.5%
3.45M shares short · FINRA 2026-08-14
Tracked 13F institutions hold 39.9% of ATI's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-08-03), not a live float.
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $3.69B | 0.05% | +13.8% |
| 2 | VANGUARD GROUP INC | $1.46B | 0.02% | -2.5% |
| 3 | STATE STREET CORP | $1.03B | 0.03% | -2.7% |
| 4 | Capital Research Global Investors | $1.00B | 0.14% | -17.3% |
| 5 | FMR LLC | $983.37M | 0.04% | -4.9% |
| 6 | AQR CAPITAL MANAGEMENT LLC | $282.43M | 0.10% | +17.2% |
| 7 | Point72 Asset Management, L.P. | $244.47M | 0.37% | -35.8% |
| 8 | VIKING GLOBAL INVESTORS LP | $227.43M | 0.65% | -65.4% |
| 9 | PRICE T ROWE ASSOCIATES INC /MD/ | $201.40M | 0.02% | +210.8% |
| 10 | MILLENNIUM MANAGEMENT LLC | $172.51M | 0.12% | +39.6% |
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of ATI with a position worth $3.69B, representing 0.05% of their portfolio. In total, 20 institutional investors hold ATI with a combined value of $9.67B.
In the most recent quarter, 3 funds opened a new position in ATI. Additionally, 9 increased their holdings and 8 reduced their positions.
Institutional investors hold $9.67B worth of ATI stock across 20 positions. The largest institutional holder is BlackRock, Inc. with $3.69B in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ATI, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their ATI positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$206.54
2026-09-09
YTD
+73.3%
84% of 52-week range
