Companies / ADTRAN Holdings, Inc. / Activity
Activity — ADTRAN Holdings, Inc.
12 moves.
Top impactInsider · CEO movesInsider · biggest buysInsider · biggest sellsInstitution · biggest movesInstitution · new positions
| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q1 2026 as of | Shannon River Fund Management LLC 13F manager | New | Common stock | $15.35M | +1.2M | 1,219,976 1.50% of shares | medium |
| Q1 2026 as of | Boston Partners 13F manager | New | Common stock | $14.91M | +1.2M | 1,181,314 1.45% of shares | medium |
| Q1 2026 as of | Marshall Wace, LLP 13F manager | New | Common stock | $11.22M | +892K | 891,520 1.09% of shares | medium |
| Q1 2026 as of | Polen Capital Management LLC 13F manager | New | Common stock | $952.2K | +76K | 75,688 0.09% of shares | low |
| Q1 2026 as of | Mariner, LLC 13F manager | New | Common stock | $408.9K | +33K | 32,510 0.04% of shares | low |
| Q3 2025 as of | Virtus Advisers, LLC 13F manager | New | Common stock | $296.1K | +32K | 31,571 0.04% of shares | low |
| Q2 2026 as of | Focused Alpha, LLC 13F manager | New | Common stock | $203.7K | +15K | 14,657 0.02% of shares | low |
| Q1 2026 as of | Thompson Davis & Co., Inc. 13F manager | New | Common stock | $149.3K | +12K | 11,865 0.01% of shares | low |
| Q1 2026 as of | Prudential Financial Inc 13F manager | New | Common stock | $145.8K | +12K | 11,593 0.01% of shares | low |
| Q2 2026 as of | Persistent Asset Partners Ltd 13F manager | New | Common stock | $28.3K | +2K | 2,035 <0.01% of shares | low |
| Q1 2026 as of | Tieton Capital Management, LLC 13F manager | New | Common stock | $13.0K | +1.0M | 1,035,167 1.27% of shares | low |
| Q2 2026 as of | Pinnacle Wealth Planning Services, Inc. 13F manager | New | Common stock | $1.8K | +127 | 127 <0.01% of shares | low |