ADTRAN (ADTN)
Builds access, aggregation, optical networking, and support systems for broadband operators.
$7.18
vs last close−0.11 (−1.44%)
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13F · 13D/G · Form 4
| Institutions | ≈ 103.03% | 83.95M shares | |
|---|---|---|---|
| 257 holders · as of Jun 30, 2026 · largest filers plus last quarter's tail | |||
| Insiders | 2.38% | 1.94M shares | |
| 12 holders · as of Aug 10, 2026 | |||
| Strategic holders | 12.58% | 10.25M shares | |
| 2 holders · as of Mar 6, 2025 | |||
| Adds to | 117.99% | ||
81.48M company shares as of Sep 23, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
This quarter's institutional total failed a plausibility check; shown: the largest filers plus last quarter's remainder.
These groups come from separate filings that can overlap, so they add to 117.99%; nothing is left for Other.
13F, as of Jun 30, 2026
257 holders · 83.95M shares · 54 new positions · 147 increased · 76 reduced · 31 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 7.84M | 9.62% | −4.1K | Aug 7, 2026 |
| Vanguard Portfolio Management LLC | 5.14M | 6.30% | +364.2K | Aug 13, 2026 |
| Vanguard Capital Management LLC | 3.51M | 4.31% | +84.0K | Aug 13, 2026 |
| State Street Corp | 3.08M | 3.78% | +732.1K | Aug 7, 2026 |
| Royce & Associates LP | 2.97M | 3.65% | −154.5K | Aug 14, 2026 |
| UBS Group AG | 2.94M | 3.61% | +2.69M | Aug 13, 2026 |
| Two Sigma Investments, LP | 2.90M | 3.55% | +1.77M | Aug 14, 2026 |
| Millennium Management LLC | 2.72M | 3.34% | +826.4K | Aug 14, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| EGORA Ventures AG (f/k/a EGORA Holding GmbH) | 6.73% | 5.36M | 13G | Mar 6, 2025 |
| Vanguard Portfolio Management | 6.03% | 4.87M | 13G | Apr 28, 2026 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 6, 2026 | Timothy P. Santoofficer: SVP of Finance; CFO | Purchase | 6,579 | $7.60 | 59,924 |
| May 20, 2026 | James Denson Jr Wilsonofficer: Chief Revenue Officer | Sale | 9,332 | $14.72 | 143,277 |
| May 7, 2026 | Christoph Glingenerofficer: Chief Technology Officer | Sale · 2 lots | 126,115 | $14.95 | 46,645 |
| May 8, 2026 | Christoph Glingenerofficer: Chief Technology Officer | Sale | 22,277 | $15.00 | 46,645 |
| Mar 4, 2026 | Hourigan Rice Jacquelinedirector | Sale | 14,406 | $10.29 | 13,809 |
| Nov 26, 2025 | Nikos Theodosopoulosdirector | Purchase | 12,859 | $7.81 | 52,154 |
| Nov 28, 2025 | Timothy P. Santoofficer: SVP of Finance; CFO | Purchase | 6,150 | $8.02 | 26,594 |
| Nov 24, 2025 | Thomas R. Stantondirector, officer: Chairman & CEO | Purchase | 40,928 | $7.33 | 982,096 |
House and Senate disclosures
Not reported.