Who owns Anterix Inc.?
Institutional ownership of ATEX from SEC Form 13F filings across 115 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
115
13F holders
$537.6M
value, 2026 filers
32.2%
of shares outstanding (6.3M sh)
40
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of ATEX's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 1.1M | $110.7M | 0.0% | 5.5% | +6.7% |
| 2 | PRICE T ROWE ASSOCIATES INC /MD/ | 750,451 | $77,252 | 0.0% | 3.8% | +9333.7% |
| 3 | Jupiter Topco LLCNEW | 662,415 | $68.2M | 0.0% | 3.4% | new |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 553,002 | $56.9M | 0.0% | 2.8% | -51.8% |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 388,076 | $40.0M | 0.0% | 2% | +3.7% |
| 6 | FMR LLC | 370,400 | $38.1M | 0.0% | 1.9% | +173.8% |
| 7 | Curated Wealth Partners LLCNEW | 250,000 | $249,799 | 0.0% | 1.3% | new |
| 8 | Invesco Ltd.NEW | 200,975 | $20.7M | 0.0% | 1% | new |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | 158,469 | $16.3M | 0.0% | 0.8% | -3.7% |
| 10 | GOLDMAN SACHS GROUP INC | 139,334 | $14.3M | 0.0% | 0.7% | -13.9% |
| 11 | Sixth Street Partners Management Company, L.P.NEW | 139,278 | $14.3M | 2.5% | 0.7% | new |
| 12 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 139,278 | $14.3M | 0.0% | 0.7% | -1.5% |
| 13 | BANK OF AMERICA CORP /DE/ | 134,686 | $13.9M | 0.0% | 0.7% | -19.7% |
| 14 | NORTHERN TRUST CORP | 123,231 | $12.7M | 0.0% | 0.6% | +4.8% |
| 15 | VANGUARD FIDUCIARY TRUST CO | 120,999 | $12.5M | 0.0% | 0.6% | +1.3% |
| 16 | D. E. Shaw & Co., Inc. | 92,990 | $9.6M | 0.0% | 0.5% | +1532.5% |
| 17 | MORGAN STANLEY | 80,425 | $8.3M | 0.0% | 0.4% | -21.7% |
| 18 | OpenArc Corporate Advisory, LLC | 75,576 | $7.8M | 0.1% | 0.4% | +2.3% |
| 19 | Bank of New York Mellon Corp | 69,374 | $7.1M | 0.0% | 0.4% | +2.3% |
| 20 | CITIGROUP INC | 59,998 | $6.2M | 0.0% | 0.3% | -49.9% |
| 21 | TD Asset Management IncNEW | 53,258 | $5.5M | 0.0% | 0.3% | new |
| 22 | Potrero Capital Research LLC | 46,525 | $4.8M | 2.7% | 0.2% | -79.7% |
| 23 | Nuveen, LLC | 35,798 | $3.7M | 0.0% | 0.2% | +56.5% |
| 24 | Creative Planning | 34,541 | $3.6M | 0.0% | 0.2% | +8.1% |
| 25 | GILDER GAGNON HOWE & CO LLCNEW | 32,833 | $3.4M | 0.0% | 0.2% | new |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.