RHINEBECK BANCORP INC (RBKB) Top Institutional Shareholders
RHINEBECK BANCORP INC (RBKB) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $17.77M in RBKB holdings during the latest filing period.
Alliancebernstein L.P. is currently the largest disclosed institutional shareholder of RBKB tracked by InsiderSet, reporting ownership valued at approximately $4.65M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $6.57M, representing an estimated gain of +41.35% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 87% of the total disclosed RBKB value among the investors covered in this analysis. Major shareholders include Alliancebernstein L.P., Vanguard Capital Management Llc, Blackrock, Inc., and several other long-term asset managers with concentrated positions in RHINEBECK BANCORP INC (RBKB).
This page ranks the largest institutional RBKB shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
44
Total Reported Value
$17.77M
Largest Holder
Alliancebernstein L.P.
Largest Position
$4.65M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
51
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Alliancebernstein L.P. | 0.00% | 386,608 | $4,647,028 | $6,568,470 | +$1,921,442 | +41.35% | |
| Vanguard Capital Management Llc | 0.00% | 184,491 | $2,844,851 | $3,134,502 | +$289,651 | +10.18% | |
| Blackrock, Inc. | 0.00% | 168,926 | $2,604,839 | $2,870,053 | +$265,214 | +10.18% | |
| Geode Capital Management, Llc | 0.00% | 93,609 | $1,443,643 | $1,590,417 | +$146,774 | +10.17% | |
| Bridgeway Capital Management, Llc | 0.02% | 74,627 | $1,150,748 | $1,267,913 | +$117,165 | +10.18% | |
| Empowered Funds, Llc | 0.01% | 59,627 | $919,448 | $1,013,063 | +$93,615 | +10.18% | |
| State Street Corp | 0.00% | 31,031 | $478,498 | $527,217 | +$48,719 | +10.18% | |
| Northern Trust Corp | 0.00% | 30,676 | $473,024 | $521,185 | +$48,161 | +10.18% | |
| Dimensional Fund Advisors Lp | 0.00% | 29,881 | $460,645 | $507,678 | +$47,033 | +10.21% | |
| Vanguard Fiduciary Trust Co | 0.00% | 26,102 | $402,493 | $443,473 | +$40,980 | +10.18% | |
| Vanguard Portfolio Management Llc | 0.00% | 25,751 | $397,080 | $437,509 | +$40,429 | +10.18% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 24,300 | $374,706 | $412,857 | +$38,151 | +10.18% |
| Cerity Partners Llc | 0.00% | 20,007 | $308,508 | $339,919 | +$31,411 | +10.18% | |
| Ae Wealth Management Llc | 0.00% | 15,164 | $233,829 | $257,636 | +$23,807 | +10.18% | |
| Charles Schwab Investment Management Inc | 0.00% | 11,327 | $174,662 | $192,446 | +$17,784 | +10.18% | |
| Focused Wealth Management, Inc | 0.02% | 10,000 | $154,200 | $169,900 | +$15,700 | +10.18% | |
| Morgan Stanley | 0.00% | 8,274 | $127,584 | $140,575 | +$12,991 | +10.18% | |
| Deutsche Bank Ag\ | 0.00% | 8,109 | $125,041 | $137,772 | +$12,731 | +10.18% | |
| New York State Common Retirement Fund | 0.00% | 5,507 | $84,918 | $93,564 | +$8,646 | +10.18% | |
| Rhumbline Advisers | 0.00% | 5,021 | $77,419 | $85,307 | +$7,888 | +10.19% | |
| Ubs Group Ag | 0.00% | 3,691 | $56,915 | $62,710 | +$5,795 | +10.18% | |
| Vanguard Global Advisers, Llc | 0.00% | 2,219 | $34,217 | $37,701 | +$3,484 | +10.18% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.00% | 2,195 | $33,847 | $37,293 | +$3,446 | +10.18% | |
| Wells Fargo & Company/Mn | 0.00% | 1,706 | $26,306 | $28,985 | +$2,679 | +10.18% | |
| Russell Investments Group, Ltd. | 0.00% | 1,455 | $22,436 | $24,720 | +$2,284 | +10.18% | |
| Bnp Paribas Financial Markets | 0.00% | 1,429 | $22,035 | $24,279 | +$2,244 | +10.18% | |
| Barclays Plc | 0.00% | 1,253 | $19,321 | $21,288 | +$1,967 | +10.18% | |
| Tower Research Capital Llc (Trc) | 0.00% | 1,194 | $18,411 | $20,286 | +$1,875 | +10.18% | |
| M3F, Inc. | 3.86% | 1,010,420 | $15,581 | $17,167,036 | +$17,151,455 | +110079.29% | |
| Citigroup Inc | 0.00% | 647 | $9,977 | $10,993 | +$1,016 | +10.18% | |
| Fmr Llc | 0.00% | 525 | $8,096 | $8,920 | +$824 | +10.17% | |
| Ameritas Investment Partners, Inc. | 0.00% | 461 | $7,109 | $7,832 | +$723 | +10.18% | |
| Legal & General Group Plc | 0.00% | 406 | $6,261 | $6,898 | +$637 | +10.17% | |
| Massmutual Private Wealth & Trust, Fsb | 0.00% | 234 | $3,608 | $3,976 | +$368 | +10.19% | |
| Sterling Capital Management Llc | 0.00% | 149 | $2,298 | $2,532 | +$234 | +10.16% | |
| Royal Bank Of Canada | 0.00% | 159 | $2,000 | $2,701 | +$701 | +35.07% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 45 | $694 | $765 | +$71 | +10.17% | |
| Gamma Investing Llc | 0.00% | 25 | $386 | $425 | +$39 | +10.04% | |
| Cwm, Llc | 0.00% | 18 | $278 | $306 | +$28 | +10.01% | |
| Caitong International Asset Management Co., Ltd | 0.00% | 9 | $139 | $153 | +$14 | +10.01% | |
| Allworth Financial Lp | 0.00% | 2 | $31 | $34 | +$3 | +9.61% | |
| Farther Finance Advisors, Llc | 0.00% | 2 | $31 | $34 | +$3 | +9.61% | |
| Mai Capital Management | 0.00% | 2 | $31 | $34 | +$3 | +9.61% | |
| Root Financial Partners, Llc | 0.00% | 2 | $31 | $34 | +$3 | +9.61% |
Frequently asked questions about RBKB
Who owns the most RBKB stock?
The largest holders of RBKB are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for RHINEBECK BANCORP INC (RBKB).
Is RBKB widely held by superinvestors?
Many widely followed stocks like RBKB appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly RBKB is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.