Who owns Rhinebeck Bancorp (RBKB)
Which tracked institutional funds hold RBKB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See RBKB 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
The tracked-fund tape on RBKB is one-sided between 2026-Q1 and 2026-Q2: 6 added or opened and 1 trimmed or exited — on balance accumulating.
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
RBKB’s largest tracked holder by dollar value, M3F, Inc., sizes it at 3.9% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 3.9pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in RBKB 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 46 tracked filers holding RBKB, 28 increased or opened the position and 15 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales. A multi-insider buy cluster also fired inside the quarter.
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 RBKB 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.
Full exits 1
- M3F, Inc.$16M
Largest adds
- VANGUARD CAPITAL MANAGEMENT LLC$5M
- BlackRock, Inc.$2M
- ALLIANCEBERNSTEIN L.P.$1M
- GEODE CAPITAL MANAGEMENT, LLC$402K
- RENAISSANCE TECHNOLOGIES LLC$375K
- VANGUARD FIDUCIARY TRUST CO$253K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC added | 471,868 | $8M | 17.3% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 372,139 | $6M | 12.2% | 2026-Q2 |
| BlackRock, Inc. added | 257,759 | $4M | 9.4% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 106,617 | $2M | 3.9% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 74,627 | $1M | 2.7% | 2026-Q2 |
| Empowered Funds, LLC | 59,627 | $1M | 2.2% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 43,300 | $750K | 1.6% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 37,882 | $656K | 1.4% | 2026-Q2 |
| NORTHERN TRUST CORP added | 36,475 | $631K | 1.3% | 2026-Q2 |
| STATE STREET CORP added | 34,831 | $603K | 1.3% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 32,186 | $557K | 1.2% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 31,584 | $547K | 1.2% | 2026-Q2 |
| Cerity Partners LLC added | 20,052 | $347K | 0.7% | 2026-Q2 |
| Bank of New York Mellon Corp new | 14,214 | $246K | 0.5% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 11,327 | $196K | 0.4% | 2026-Q2 |
| Focused Wealth Management, Inc | 10,000 | $173K | 0.4% | 2026-Q2 |
| MORGAN STANLEY trimmed | 6,660 | $115K | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 5,514 | $95K | 0.2% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND | 5,507 | $95K | 0.2% | 2026-Q2 |
| Arax Advisory Partners added | 5,043 | $87K | 0.2% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 4,977 | $86K | 0.2% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 4,586 | $79K | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 3,942 | $68K | 0.1% | 2026-Q2 |
| UBS Group AG added | 3,784 | $66K | 0.1% | 2026-Q2 |
| Police & Firemen's Retirement System of New Jersey new | 2,608 | $45K | 0.1% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 2,219 | $38K | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 2,178 | $38K | 0.1% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 2,167 | $38K | 0.1% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 2,025 | $35K | 0.1% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 1,083 | $19K | 0.0% | 2026-Q2 |
| BARCLAYS PLC trimmed | 793 | $14K | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) trimmed | 672 | $12K | 0.0% | 2026-Q2 |
| FMR LLC added | 574 | $10K | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 485 | $9K | 0.0% | 2026-Q2 |
| Ameritas Investment Partners, Inc. | 461 | $8K | 0.0% | 2026-Q2 |
| Legal & General Group Plc | 406 | $7K | 0.0% | 2026-Q2 |
| Sterling Capital Management LLC trimmed | 84 | $1K | 0.0% | 2026-Q2 |
| GAMMA Investing LLC added | 68 | $1K | 0.0% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 64 | $1K | 0.0% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 45 | $779 | 0.0% | 2026-Q2 |
| IFP Advisors, Inc added | 11 | $190 | 0.0% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd | 9 | $156 | 0.0% | 2026-Q2 |
| EverSource Wealth Advisors, LLC added | 4 | $69 | 0.0% | 2026-Q2 |
| Farther Finance Advisors, LLC added | 4 | $69 | 0.0% | 2026-Q2 |
| Essential Partners LLC added | 2 | $35 | 0.0% | 2026-Q2 |
| True Wealth Design, LLC new | 2 | $35 | 0.0% | 2026-Q2 |
| M3F, Inc. trimmed | 1,010,420 | $16M | 33.0% | 2026-Q1 stale (1 quarter behind) |
| AE Wealth Management LLC added | 15,188 | $234K | 0.5% | 2026-Q1 stale (1 quarter behind) |
| MassMutual Private Wealth & Trust, FSB trimmed | 234 | $4K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| CWM, LLC | 18 | $278 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Root Financial Partners, LLC new | 2 | $31 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| MAI Capital Management | 2 | $31 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Allworth Financial LP | 2 | $31 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| VANGUARD GROUP INC added | 238,278 | $3M | 6.1% | 2025-Q4 stale (2 quarters behind) |
| GRACE & WHITE INC /NY | 12,664 | $152K | 0.3% | 2025-Q4 stale (2 quarters behind) |
| BANK OF AMERICA CORP /DE/ added | 3,787 | $46K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| AMALGAMATED BANK trimmed | 142 | $2K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| OSAIC HOLDINGS, INC. new | 3,580 | $41K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| NISA INVESTMENT ADVISORS, LLC | 289 | $3K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| PNC Financial Services Group, Inc. new | 6 | $68 | 0.0% | 2025-Q3 stale (3 quarters behind) |
| RAYMOND JAMES FINANCIAL INC new | 6,392 | $75K | 0.2% | 2025-Q2 stale (4 quarters behind) |
| SBI Securities Co., Ltd. | 30 | $352 | 0.0% | 2025-Q2 stale (4 quarters behind) |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale (4 quarters behind) |
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.