Old Second National Bank Of Aurora holds a diversified book of 275 stocks worth $530.5M as of Q2 2026 (disclosed Jul 21, 2026, a ~45-day 13F lag). This quarter they opened Blackstone Secured Lending F and trimmed MFS Active International. Their largest long position is MFS Active International at 8% of the equity book. Cloning the disclosed picks since 2024 would be +30% (+16.4%/yr). That is a simulation of the disclosed long book, not audited returns.
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curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/903783/holdings"
Use Arkolith to show OLD SECOND NATIONAL BANK OF AURORA's latest holdings, largest changes, and filing provenance.
Following at the filing date actually beat the quarter-end book by 5.7 points over this window.
Growth of $10,000 cloning Old Second National Bank Of Aurora's disclosed long 13F book, rebalanced on each filing date (so it reflects the ~45-day reporting lag, no look-ahead), total-return basis (dividends reinvested), derived from end-of-day prices. “Their reported book” values the same picks from quarter-end, before they were public. S&P 500 is SPY total return over the same window. Excludes shorts, cash, options and non-13F holdings. Not investment advice.
Top-heavy: diversified book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
62% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Other tracked managers holding the same core names as Old Second National Bank Of Aurora
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| BANK OF AMERICA CORP /DE/ | 80 / 80 | $379.6B |
| ROYAL BANK OF CANADA | 80 / 80 | $160.9B |
| RAYMOND JAMES FINANCIAL INC | 80 / 80 | $84.3B |
| ENVESTNET ASSET MANAGEMENT INC | 80 / 80 | $80.2B |
| LPL Financial LLC | 80 / 80 | $71.1B |
| JONES FINANCIAL COMPANIES LLLP | 80 / 80 | $51.8B |
| STIFEL FINANCIAL CORP | 80 / 80 | $33.0B |
| Cetera Investment Advisers | 80 / 80 | $18.4B |
Ranked by how many of Old Second National Bank Of Aurora's top 80 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | MFS Active International ETF Com | $44.6M | 1.37M | 8.4% | ▼−0.8% Reduced · −11K sh | |
| 2 | Ishares Core S&P Midcap ETF Com | $32.1M | 416.3K | 6.1% | ▼−2.1% Reduced · −9K sh | |
| 3 | Nvidia Corporation Com | $20.4M | 102.1K | 3.8% | ▼−3.9% Reduced · −4K sh | |
| 4 | Broadcom Inc Com | $18.9M | 50.0K | 3.6% | ▼−6.9% Reduced · −4K sh | |
| 5 | Apple Computer Inc Com | $15.6M | 53.9K | 2.9% | ▼−3.5% Reduced · −2K sh | |
| 6 | Alphabet Class A Com | $15.6M | 43.6K | 2.9% | ▼−7.0% Reduced · −3K sh | |
| 7 | Invesco Bulletshares 2027 ETF Com | $15.1M | 771.9K | 2.9% | ▼−3.0% Reduced · −24K sh | |
| 8 | KLA Corp Com | $14.6M | 48.3K | 2.7% | ▲+783% Added · +43K sh | |
| 9 | Microsoft Corp Com | $14.1M | 37.8K | 2.7% | ▲+4.6% Added · +2K sh | |
| 10 | Vanguard FTSE Europe ETF Com | $12.6M | 141.8K | 2.4% | ▼−7.8% Reduced · −12K sh | |
| 11 | Corning Inc Com | $11.8M | 46.2K | 2.2% | ▼−41% Reduced · −32K sh | |
| 12 | J P Morgan Chase & Co Com | $11.6M | 35.4K | 2.2% | ▼−2.7% Reduced · −990 sh | |
| 13 | Morgan Stanley Com | $10.9M | 52.4K | 2.1% | ▼−5.7% Reduced · −3K sh | |
| 14 | Vanguard MSCI Emerging Markets ETF Com | $10.9M | 183.2K | 2.1% | ▲43× Added · +179K sh | |
| 15 | Cummins Inc. Com | $10.7M | 15.0K | 2.0% | ▼−9.9% Reduced · −2K sh | |
| 16 | Eli Lilly & Co Com | $10.2M | 8.5K | 1.9% | ▼−4.0% Reduced · −358 sh | |
| 17 | Vanguard FTSE Developed Markets ETF Com | $9.8M | 138.0K | 1.9% | ▲+3.5% Added · +5K sh | |
| 18 | SPDR S&P 500 ETF Com | $9.1M | 12.2K | 1.7% | ▼−1.5% Reduced · −183 sh | |
| 19 | Amazon.com Inc. Com | $8.0M | 33.4K | 1.5% | ▼−1.9% Reduced · −646 sh | |
| 20 | Vanguard Total World Stock ETF Com | $7.5M | 47.6K | 1.4% | ▼−4.2% Reduced · −2K sh | |
| 21 | Pulte Homes, Inc Com | $7.2M | 52.8K | 1.4% | ▼−2.3% Reduced · −1K sh | |
| 22 | Blackrock Financial Class B Com | $6.9M | 7.2K | 1.3% | ▼−2.6% Reduced · −197 sh | |
| 23 | Invesco Bulletshares 2028 ETF Com | $6.9M | 340.2K | 1.3% | ▲~0% Added · +21 sh | |
| 24 | Johnson & Johnson Com | $6.9M | 27.2K | 1.3% | ▼−4.3% Reduced · −1K sh | |
| 25 | SPDR Portfolio S&P 500 ETF Com | $6.5M | 73.5K | 1.2% | ▲+10% Added · +7K sh | |
| 26 | Blackstone Inc Com | $5.4M | 46.2K | 1.0% | ▲+24% Added · +9K sh | |
| 27 | Invesco Bulletshares 2027 High Yld ETF Com | $5.3M | 236.7K | 1.0% | ▼−9.2% Reduced · −24K sh | |
| 28 | Viking Holdings Ltd. Com | $5.1M | 48.9K | 1.0% | ▼−5.7% Reduced · −3K sh | |
| 29 | Valero Energy Corp Com | $5.0M | 19.3K | 0.9% | ▼−7.9% Reduced · −2K sh | |
| 30 | Abbvie Inc Com | $4.8M | 19.2K | 0.9% | ▼−1.5% Reduced · −296 sh | |
| 31 | Fifth Third Bancorp Com | $4.6M | 81.5K | 0.9% | ▼−0.5% Reduced · −391 sh | |
| 32 | EOG Resources Inc Com | $4.5M | 35.0K | 0.9% | ▲+29% Added · +8K sh | |
| 33 | Chevron Corp Com | $4.5M | 27.2K | 0.8% | ▲+27% Added · +6K sh | |
| 34 | Metlife Inc Com | $4.4M | 51.8K | 0.8% | ▼−1.1% Reduced · −568 sh | |
| 35 | Sofi Technologies Inc Com | $4.3M | 240.9K | 0.8% | ▲+39% Added · +67K sh | |
| 36 | Eaton Corp PLC Com | $4.3M | 10.1K | 0.8% | ▼−1.4% Reduced · −143 sh | |
| 37 | Pepsico Inc. Com | $4.2M | 31.3K | 0.8% | ▼−3.1% Reduced · −999 sh | |
| 38 | Blackstone Secured Lending Fund Com | $4.2M | 175.5K | 0.8% | ▲New New position | |
| 39 | Ares Capital Corporation Com | $4.2M | 224.3K | 0.8% | ▲New New position | |
| 40 | Capital One Financial Com | $3.8M | 19.0K | 0.7% | ▲+4.5% Added · +819 sh | |
| 41 | Northrop Grumman Corp Com | $3.7M | 7.3K | 0.7% | ▼−2.3% Reduced · −171 sh | |
| 42 | Nextera Energy Inc Com | $3.7M | 42.1K | 0.7% | ▲+7.0% Added · +3K sh | |
| 43 | Prologis Inc Com | $3.5M | 26.1K | 0.7% | ▼−3.7% Reduced · −1K sh | |
| 44 | Norfolk Southern Corp Com | $3.5M | 11.0K | 0.7% | ▼−1.2% Reduced · −136 sh | |
| 45 | Mastercard Inc. Com | $3.3M | 6.4K | 0.6% | ▲+2.1% Added · +133 sh | |
| 46 | First Trust Cybersecurity ETF Com | $3.2M | 35.2K | 0.6% | ▼−3.9% Reduced · −1K sh | |
| 47 | Procter & Gamble Co Com | $2.9M | 19.9K | 0.5% | ▼−0.1% Reduced · −22 sh | |
| 48 | United Parcel Service Inc Class B Com | $2.9M | 26.8K | 0.5% | ▼−0.1% Reduced · −42 sh | |
| 49 | Welltower Inc Com | $2.8M | 12.4K | 0.5% | ▼−10.0% Reduced · −1K sh | |
| 50 | Badger Meter Inc Com | $2.8M | 18.6K | 0.5% | ▲+8.2% Added · +1K sh |
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Jul 21, 2026 | 387 | $530.5M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | Apr 21, 2026 | 391 | $483.9M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Jan 27, 2026 | 402 | $500.0M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Oct 22, 2025 | 401 | $485.4M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Jul 21, 2025 | 419 | $458.0M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | Apr 21, 2025 | 431 | $424.7M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Jan 23, 2025 | 640 | $439.8M | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 5, 2024 | 457 | $414.2M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.