ISABELLA BANK CORP (ISBA) — Institutional Holders, Q2 2026

59 institutional investment managers reported a ISBA position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $61.6M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

ISBA in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

27

Added to

16

Trimmed

5

Sold out

10

Biggest buyers

  1. BlackRockAdded · +367,230 sh+$14.5M
  2. GEODE CAPITAL MANAGEMENTAdded · +95,849 sh+$3.8M
  3. STATE STREETAdded · +64,529 sh+$2.5M
  4. VANGUARD PORTFOLIO MANAGEMENTNew · +46,742 sh+$1.8M
  5. NORTHERNAdded · +38,731 sh+$1.5M

Biggest sellers

  1. MILLENNIUM MANAGEMENTSold out · -107,356 sh-$4.2M
  2. SUSQUEHANNA INTERNATIONAL GROUP, LLPSold out · -94,742 sh-$3.7M
  3. MARSHALL WACE, LLPTrimmed · -33,813 sh-$1.3M
  4. Qube Research & Technologies LtdTrimmed · -14,176 sh-$560.0K
  5. UBS Group AGTrimmed · -9,954 sh-$393.2K

ISBA 13F holders ranked 1–59 of 59

Institutional investors reporting a position in ISABELLA BANK CORP on SEC Form 13F-HR for Q2 2026, ranked by reported value.
InstitutionValueQoQ
BlackRock#1 · 467,431 sh$18.5M+366.5%
VANGUARD CAPITAL MANAGEMENT#2 · 299,599 sh$11.8M+9.3%
GEODE CAPITAL MANAGEMENT#3 · 176,251 sh$7.0M+119.2%
STATE STREET#4 · 86,581 sh$3.4M+292.6%
NORTHERN#5 · 53,471 sh$2.1M+262.8%
VANGUARD PORTFOLIO MANAGEMENT#6 · 46,742 sh$1.8MNew
VANGUARD FIDUCIARY#7 · 46,482 sh$1.8M+14.1%
HARBOUR INVESTMENTS#8 · 32,988 sh$1.3M+22.1%
VICTORY CAPITAL MANAGEMENT#9 · 31,000 sh$1.2MNew
GOLDMAN SACHS GROUP#10 · 27,462 sh$1.1M+31.9%
TWO SIGMA INVESTMENTS#11 · 23,858 sh$942.4KNew
CHARLES SCHWAB INVESTMENT MANAGEMENT#12 · 20,321 sh$802.7KNew
AMERICAN CENTURY COMPANIES#13 · 19,931 sh$787.3K+10.5%
MARSHALL WACE, LLP#14 · 19,865 sh$784.7K-63.0%
Bank of New York Mellon#15 · 16,773 sh$662.5KNew
BRIDGEWAY CAPITAL MANAGEMENT#16 · 14,240 sh$562.5K0.0%
CITADEL ADVISORS#17 · 14,147 sh$558.8K+167.5%
Nuveen#18 · 12,690 sh$501.3KNew
Integrated Wealth Concepts#19 · 12,214 sh$482.4K+100.5%
BANK OF AMERICA#20 · 10,550 sh$416.7K+13.2%
Walleye Capital#21 · 8,994 sh$355.3KNew
DIMENSIONAL FUND ADVISORS#22 · 8,840 sh$349.9K0.0%
Mattson Financial Services#23 · 8,534 sh$347.5KNew
Gradient Investments#24 · 8,534 sh$337.1KNew
Qube Research & Technologies Ltd#25 · 7,358 sh$290.6K-65.8%
DEUTSCHE BANK AG\#26 · 6,774 sh$267.6KNew
FourThought Financial Partners#27 · 6,392 sh$252.5K0.0%
WELLS FARGO & COMPANY#28 · 6,313 sh$249.4K+1162.6%
Invesco Ltd.#29 · 6,141 sh$242.6KNew
PRICE T ROWE ASSOCIATES#30 · 5,695 sh$225.0KNew
RHUMBLINE ADVISERS#31 · 5,355 sh$211.5KNew
NORRIS PERNE & FRENCH LLP#32 · 5,151 sh$203.5K0.0%
CITIGROUP#33 · 4,992 sh$197.2K-5.6%
MetLife Investment Management#34 · 4,300 sh$169.8KNew
UBS Group AG#35 · 3,435 sh$135.7K-74.3%
MIRAE ASSET GLOBAL ETFS Ltd.#36 · 3,182 sh$125.7KNew
BNP PARIBAS FINANCIAL MARKETS#37 · 3,071 sh$121.3K+258.8%
MORGAN STANLEY#38 · 3,067 sh$121.1K-66.6%
JPMORGAN CHASE#39 · 2,877 sh$117.3KNew
Vanguard Global Advisers#40 · 2,677 sh$105.7K0.0%
NEW YORK STATE COMMON RETIREMENT FUND#41 · 2,600 sh$102.7KNew
Union Bankshares#42 · 2,563 sh$101.2K0.0%
Police & Firemen's Retirement System of New Jersey#43 · 2,047 sh$80.9KNew
BARCLAYS PLC#44 · 1,401 sh$55.3K+36.4%
STRS OHIO#45 · 1,400 sh$55.3KNew
Legal & General Group Plc#46 · 676 sh$26.7KNew
Ameritas Investment Partners#47 · 630 sh$24.9KNew
Russell Investments Group, Ltd.#48 · 554 sh$21.9KNew
ROYAL BANK OF CANADA#49 · 526 sh$21.0K+491.0%
Tower Research Capital (TRC)#50 · 518 sh$20.5KNew
Clearstead Advisors#51 · 281 sh$11.1K0.0%
HUNTINGTON NATIONAL BANK#52 · 250 sh$9.9K0.0%
JONES FINANCIAL COMPANIES LLLP#53 · 150 sh$6.0K0.0%
Sterling Capital Management#54 · 140 sh$5.5KNew
ROTHSCHILD INVESTMENT#55 · 50 sh$2.0K0.0%
FMR#56 · 31 sh$1.2KNew
OSAIC#57 · 19 sh$751.000.0%
Caitong International Asset Management , Ltd#58 · 2 sh$79.00New
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM#59 · 96 sh—New

Funds that sold out of ISBA in Q2 2026 (10)

Held ISBA at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held ISBA in Q1 2026 and reported no position in Q2 2026.
InstitutionValue in Q1 2026
MILLENNIUM MANAGEMENT107,356 sh$4.9M
SUSQUEHANNA INTERNATIONAL GROUP, LLP94,742 sh$4.3M
JANE STREET GROUP7,147 sh$326.4K
Schonfeld Strategic Advisors6,505 sh$297.1K
HRT FINANCIAL6,343 sh$289.0K
Point72 Asset Management, L.P.5,989 sh$273.5K
Catalyst Funds Management Pty Ltd5,074 sh$231.7K
Brevan Howard Capital Management4,615 sh$210.8K
MAI Capital Management350 sh$16.0K
Advisory Services Network60 sh$2.7K

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.