Isabella Bank Corporation (ISBA) Ownership
ISBA ownership summary
as of October 18, 2026- Institutions
- 20.9% of shares outstanding
- Insiders
- 6.42% of shares outstanding
- Shares outstanding
- 7.6M
- Float
- 7.1M shares available to trade
- Short interest
- 4.17% 314K shares short
- Days to cover
- 5.68 short interest down 1.0% vs prior month
- Institutions 20.93%
- Insiders 6.42%
- Other investors 72.66%
ISBA top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 6.13% | 467K | $17.2M | +367,230 (+366.5%) | June 30, 2026 |
| 2 | Vanguard Capital Management, LLC | 3.93% | 300K | $11.0M | +25,551 (+9.3%) | June 30, 2026 |
| 3 | Geode Capital Management, LLC | 2.31% | 176K | $6.5M | +95,849 (+119.2%) | June 30, 2026 |
| 4 | State Street Corp | 1.13% | 87K | $3.2M | +64,529 (+292.6%) | June 30, 2026 |
| 5 | Northern Trust Corp | 0.70% | 53K | $2.0M | +38,731 (+262.8%) | June 30, 2026 |
| 6 | Vanguard Portfolio Management, LLC | 0.61% | 47K | $1.7M | +46,742 (0.0%) | June 30, 2026 |
| 7 | Vanguard Fiduciary Trust Co | 0.61% | 46K | $1.7M | +5,728 (+14.1%) | June 30, 2026 |
| 8 | HARBOUR INVESTMENTS, INC. | 0.43% | 33K | $1.2M | +5,967 (+22.1%) | June 30, 2026 |
| 9 | Victory Capital Management Inc. | 0.41% | 31K | $1.1M | +31,000 (0.0%) | June 30, 2026 |
| 10 | The Goldman Sachs Group Inc | 0.36% | 27K | $1.0M | +6,637 (+31.9%) | June 30, 2026 |
| 11 | Two Sigma Investments LLC | 0.31% | 24K | $875,827 | +23,858 (0.0%) | June 30, 2026 |
| 12 | Charles Schwab Investment Management Inc | 0.27% | 20K | $745,984 | +20,321 (0.0%) | June 30, 2026 |
| 13 | American Century Companies Inc | 0.26% | 20K | $731,667 | +1,888 (+10.5%) | June 30, 2026 |
| 14 | Marshall Wace Asset Management Ltd | 0.26% | 20K | $729,244 | −33,813 (−63.0%) | June 30, 2026 |
| 15 | Bank of New York Mellon Corp | 0.22% | 17K | $615,737 | +16,773 (0.0%) | June 30, 2026 |
| 16 | Bridgeway Capital Management, LLC | 0.19% | 14K | $522,750 | — | June 30, 2026 |
| 17 | Citadel Advisors Llc | 0.19% | 14K | $519,336 | +8,858 (+167.5%) | June 30, 2026 |
| 18 | Nuveen, LLC | 0.17% | 13K | $465,850 | +12,690 (0.0%) | June 30, 2026 |
| 19 | Bank of America Corp | 0.14% | 11K | $387,290 | +1,234 (+13.2%) | June 30, 2026 |
| 20 | Walleye Trading Advisors, LLC | 0.12% | 8,994 | $330,170 | +8,994 (0.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 18 holders added 783K shares and 1 cut 34K.
ISBA top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.75% | 210K | $7.7M | — | August 31, 2026 |
| 2 | iShares Russell 2000 ETF | 2.29% | 174K | $6.4M | −1,984 (−1.1%) | September 30, 2026 |
| 3 | Fidelity Small Cap Index | 1.01% | 77K | $2.8M | +1,293 (+1.7%) | July 31, 2026 |
| 4 | iShares Russell 2000 Value ETF | 0.88% | 67K | $2.5M | +102 (+0.2%) | September 30, 2026 |
| 5 | Vanguard Russell 2000 ETF | 0.53% | 40K | $1.5M | +458 (+1.1%) | September 30, 2026 |
| 6 | Fidelity Extended Market Index | 0.45% | 34K | $1.3M | −184 (−0.5%) | August 31, 2026 |
| 7 | First Trust Dow Jones Sel MicroCap ETF | 0.40% | 31K | $1.1M | — | September 30, 2026 |
| 8 | iShares Micro-Cap ETF | 0.29% | 22K | $812,429 | −153 (−0.7%) | September 30, 2026 |
| 9 | Victory Integrity Discovery Y | 0.23% | 18K | $646,096 | +17,600 (0.0%) | June 30, 2026 |
| 10 | Schwab Small Cap Index | 0.22% | 17K | $617,279 | — | August 31, 2026 |
| 11 | Bridgeway Ultra-Small Company | 0.19% | 14K | $522,750 | — | June 30, 2026 |
| 12 | Fidelity Total Market Index | 0.19% | 14K | $520,438 | — | August 31, 2026 |
| 13 | iShares Russell 2000 Small-Cap Idx Instl | 0.17% | 13K | $476,202 | — | August 31, 2026 |
| 14 | Avantis US Small Cap Value ETF | 0.16% | 12K | $451,900 | — | September 30, 2026 |
| 15 | State Street® SPDR® USSmCapLowVolIndETF | 0.14% | 11K | $393,641 | — | September 30, 2026 |
| 16 | Fidelity Series Total Market Index | 0.14% | 11K | $391,843 | +192 (+1.8%) | August 31, 2026 |
| 17 | Fidelity Small Cap Value Index | 0.13% | 9,974 | $366,146 | +202 (+2.1%) | July 31, 2026 |
| 18 | Nuveen Small Cap Blend Idx R6 | 0.12% | 9,207 | $337,989 | — | August 31, 2026 |
| 19 | Bayview US Micro Cap Equity MF | 0.10% | 7,750 | $284,502 | +7,750 (0.0%) | June 30, 2026 |
| 20 | Avantis US Small Cap Equity ETF | 0.10% | 7,642 | $280,538 | — | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
ISBA shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns ISBA
Institutional investors own 20.9% of Isabella Bank's shares and insiders 6.42%. The largest holder is BlackRock Inc with 6.13% of the shares (467K), as of June 30, 2026. Among the top 20 institutions, 18 added shares and 1 reduced their stake in the latest filings. Short interest is 4.17% of the float, or 5.68 days of average trading volume. The share count fell 6.6% since 2014.
Related: ISBA analyst forecast, ISBA key metrics, ISBA dividend history. See the ISBA stock overview for the latest quote and news.
ISBA ownership FAQ
Who owns the most Isabella Bank stock?
The largest shareholders of Isabella Bank are BlackRock Inc (6.13%), Vanguard Capital Management, LLC (3.93%), Geode Capital Management, LLC (2.31%), State Street Corp (1.13%), Northern Trust Corp (0.70%).
What percentage of Isabella Bank is owned by institutions?
Institutions hold 20.9% of Isabella Bank's shares outstanding; insiders hold 6.42%.
Which funds own Isabella Bank?
The largest fund holders of Isabella Bank are Vanguard MStar Total Stk Mkt Idx Invest (2.75%), iShares Russell 2000 ETF (2.29%), Fidelity Small Cap Index (1.01%), iShares Russell 2000 Value ETF (0.88%), Vanguard Russell 2000 ETF (0.53%).
What is Isabella Bank's short interest?
314K shares of Isabella Bank were sold short, 4.17% of the float; at the average daily volume it would take 5.68 days to cover.
How many shares of Isabella Bank are outstanding?
Isabella Bank has 7.6M shares outstanding, of which 7.1M are in the public float.