3 institutions reported holding $455,396 of ASSOCIATED BANC-CORP (ASB.WS) in SEC 13F filings for 2026-06-30. Largest institutional holders: GROUP ONE TRADING LLC ($366,163), SIMPLEX TRADING, LLC ($89,233), Beck Bode, LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | $366,163 | 11,900 | Added |
| 2 | SIMPLEX TRADING, LLC | $89,233 | 2,900 | Trimmed |
| 3 | Beck Bode, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30