BankFinancial CORP
Total Trades
3
Buys
3
Sells
0
Largest Trade
$1K–$15K
Insiders
1
Institutional Funds
57
Inst. Value
$1M+
Activist Filings
26
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| O'Connor Aaron J | Director | BUY | $1K–$15K | 1K | $10.38 | Feb 12, 2024 |
| O'Connor Aaron J | Insider | BUY | $1K–$15K | 500 | $7.42 | May 11, 2023 |
| O'Connor Aaron J | Insider | BUY | $1K–$15K | 1K | $10.32 | Feb 24, 2023 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 57 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| DIMENSIONAL FUND ADVISORS LP | 677K | $1M+ | SH |
| STRATEGIC VALUE BANK PARTNERS LLC | 645K | $1M+ | SH |
| GARDNER LEWIS ASSET MANAGEMENT L P | 611K | $1M+ | SH |
| GLAZER CAPITAL, LLC | 607K | $1M+ | SH |
| RENAISSANCE TECHNOLOGIES LLC | 575K | $1M+ | SH |
| M3F, Inc. | 492K | $1M+ | SH |
| Yakira Capital Management, Inc. | 369K | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 230K | $1M+ | SH |
| ABC ARBITRAGE SA | 175K | $1M+ | SH |
| STATE STREET CORP | 134K | $1M+ | SH |
| VANGUARD GROUP INC | 72K | $500K+ | SH |
| UBS Group AG | 67K | $500K+ | SH |
| Virtu Financial LLC | 65K | $500K+ | SH |
| Round Hill Asset Management | 57K | $500K+ | SH |
| Cerity Partners LLC | 56K | $500K+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 56K | $500K+ | SH |
| NOMURA HOLDINGS INC | 38K | $100K–$500K | SH |
| AMERICAN CENTURY COMPANIES INC | 34K | $100K–$500K | SH |
| Legal & General Group Plc | 27K | $100K–$500K | SH |
| Traynor Capital Management, Inc. | 27K | $100K–$500K | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 12, 2026
4.6%
575K shares
SC 13G/A · Feb 4, 2026
4.0%
492K shares
SC 13G/A · Jan 21, 2026
5.6%
701K shares
SC 13G/A · Nov 14, 2025
1.8%
225K shares
SC 13G/A · Nov 14, 2025
8.0%
1.0M shares
SC 13G/A · Aug 13, 2025
7.9%
987K shares
SC 13G · Jul 29, 2025
5.3%
656K shares
SC 13G · Jul 17, 2025
5.8%
717K shares
BankFinancial & Subsidiaries Assoc. Investment Plan
SC 13G/A · Feb 7, 2025
6.9%
858K shares
SC 13G/A · Nov 15, 2024
6.8%
842K shares
SC 13G/A · May 8, 2024
5.0%
622K shares
AllianceBernstein L.P. 13-4064930
SC 13G · Feb 14, 2024
5.7%
719K shares
SC 13G/A · Feb 14, 2024
9.2%
1.2M shares
Renaissance Technologies LLC 26-0385758
SC 13G/A · Feb 13, 2024
5.6%
699K shares
SC 13D · Feb 13, 2024
5.2%
645K shares
SC 13G/A · Jan 31, 2024
5.4%
678K shares
BANKFINANCIAL AND SUBSIDIARIES ASSOC. INVESTMENT PLAN
SC 13G/A · Jan 19, 2024
6.9%
858K shares
SC 13G · Feb 13, 2023
0.0%
12 shares
Renaissance Technologies LLC 26-0385758
SC 13G/A · Feb 13, 2023
6.0%
760K shares
SC 13G/A · Feb 10, 2023
9.8%
1.3M shares
Dimensional Fund Advisors LP 30-0447847
SC 13G/A · Feb 10, 2023
7.9%
1.0M shares
SC 13G/A · Feb 1, 2023
5.6%
724K shares
BANKFINANCIAL AND SUBSIDIARIES ASSOC. INVESTMENT PLAN
SC 13G/A · Jan 31, 2023
6.4%
813K shares
BANKFINANCIAL AND SUBSIDIARIES ASSOC. INVESTMENT PLAN
SC 13G · Mar 4, 2022
6.5%
857K shares
SC 13G/A · Feb 14, 2022
6.6%
876K shares
Renaissance Technologies LLC 26-0385758
SC 13G/A · Feb 11, 2022
6.4%
854K shares