Who owns CBU
Which tracked institutional funds hold CBU, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See CBU company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
77 tracked funds added or opened CBU while 33 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
CBU’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in CBU divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 254 tracked filers holding CBU, 138 increased or opened the position and 118 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in CBU between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 12
- MASSACHUSETTS FINANCIAL SERVICES CO /MA/$30M
- BASSWOOD CAPITAL MANAGEMENT, L.L.C.$22M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$9M
- LOGAN CAPITAL MANAGEMENT INC$4M
- CANANDAIGUA NATIONAL BANK & TRUST CO$2M
- Jupiter Topco LLC$2M
Full exits 20
- SG Americas Securities, LLC$7M
- ExodusPoint Capital Management, LP$5M
- NEW YORK STATE TEACHERS RETIREMENT SYSTEM$5M
- BALYASNY ASSET MANAGEMENT L.P.$4M
- CANADA LIFE ASSURANCE Co$3M
- Thrivent Financial for Lutherans$2M
Largest adds
- BlackRock, Inc.$184M
- FMR LLC$69M
- STATE STREET CORP$38M
- VANGUARD PORTFOLIO MANAGEMENT LLC$31M
- VANGUARD CAPITAL MANAGEMENT LLC$19M
- DIMENSIONAL FUND ADVISORS LP$17M
Largest trims
- NFJ INVESTMENT GROUP, LLC$22M
- BANK OF AMERICA CORP /DE/$19M
- GOLDMAN SACHS GROUP INC$17M
- DEPRINCE RACE & ZOLLO INC$6M
- ProShare Advisors LLC$6M
- VICTORY CAPITAL MANAGEMENT INC$2M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.