3 institutions reported holding $171,309 of ASSOCIATED BANC-CORP (ASB.WS) in SEC 13F filings for 2026-03-31. Largest institutional holders: SIMPLEX TRADING, LLC ($124,128), GROUP ONE TRADING LLC ($41,376), Beck Bode, LLC ($5,805). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SIMPLEX TRADING, LLC | $124,128 | 4,800 | Trimmed |
| 2 | GROUP ONE TRADING LLC | $41,376 | 1,600 | Trimmed |
| 3 | Beck Bode, LLC | $5,805 | 11,600 | New |
Source: SEC Form 13F filings · as of 2026-03-31