Who owns TrustCo Bank Corp NY (TRST)
Which tracked institutional funds hold TRST, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See TRST company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 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
33 tracked funds added or opened TRST while 17 trimmed or exited it between 2025-Q4 and 2026-Q1 — 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
TRST’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 TRST 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 2025-Q4 and 2026-Q1, across 185 tracked filers holding TRST, 74 increased or opened the position and 92 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
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 TRST between the 2025-Q4 and 2026-Q1 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 9
- VANGUARD CAPITAL MANAGEMENT LLC$36M
- VANGUARD PORTFOLIO MANAGEMENT LLC$16M
- VANGUARD FIDUCIARY TRUST CO$5M
- Ellsworth Advisors, LLC$825K
- MILLENNIUM MANAGEMENT LLC$619K
- VANGUARD ASSET MANAGEMENT, Ltd$550K
Full exits 6
- VANGUARD GROUP INC$48M
- Verition Fund Management LLC$13M
- TWO SIGMA ADVISERS, LP$3M
- Brandywine Global Investment Management, LLC$1M
- NEW YORK STATE TEACHERS RETIREMENT SYSTEM$1M
- MARTINGALE ASSET MANAGEMENT L P$592K
Largest adds
- Invesco Ltd.$5M
- TWO SIGMA INVESTMENTS, LP$4M
- GEODE CAPITAL MANAGEMENT, LLC$3M
- DIMENSIONAL FUND ADVISORS LP$3M
- SYSTEMATIC FINANCIAL MANAGEMENT LP$3M
- AMERICAN CENTURY COMPANIES INC$2M
Largest trims
- FRANKLIN RESOURCES INC$13M
- GOLDMAN SACHS GROUP INC$3M
- Trexquant Investment LP$2M
- BARCLAYS PLC$953K
- ROYCE & ASSOCIATES LP$945K
- LPL Financial LLC$707K
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 |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 2,566,363 | $112M | 17.2% | 2026-Q1 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP trimmed | 1,165,133 | $51M | 7.8% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 1,137,504 | $50M | 7.6% | 2026-Q1 |
| STATE STREET CORP trimmed | 891,082 | $39M | 6.0% | 2026-Q1 |
| HoldCo Asset Management, LP | 872,744 | $38M | 5.9% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 819,113 | $36M | 5.5% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 564,913 | $25M | 3.8% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 498,625 | $22M | 3.3% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 372,698 | $16M | 2.5% | 2026-Q1 |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC added | 291,369 | $13M | 2.0% | 2026-Q1 |
| Invesco Ltd. added | 271,367 | $12M | 1.8% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 229,319 | $10M | 1.5% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 220,331 | $10M | 1.5% | 2026-Q1 |
| NORTHERN TRUST CORP added | 197,118 | $9M | 1.3% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 181,243 | $8M | 1.2% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 168,998 | $7M | 1.1% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 165,291 | $7M | 1.1% | 2026-Q1 |
| GABELLI FUNDS LLC added | 151,443 | $7M | 1.0% | 2026-Q1 |
| MORGAN STANLEY trimmed | 147,835 | $6M | 1.0% | 2026-Q1 |
| UBS Group AG trimmed | 134,725 | $6M | 0.9% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC trimmed | 126,352 | $6M | 0.8% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 125,601 | $5M | 0.8% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 115,729 | $5M | 0.8% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 87,600 | $4M | 0.6% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 87,100 | $4M | 0.6% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 82,283 | $4M | 0.6% | 2026-Q1 |
| Empowered Funds, LLC trimmed | 79,672 | $3M | 0.5% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC added | 76,766 | $3M | 0.5% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 72,445 | $3M | 0.5% | 2026-Q1 |
| State of New Jersey Common Pension Fund D trimmed | 71,769 | $3M | 0.5% | 2026-Q1 |
| HRT FINANCIAL LP added | 67,434 | $3M | 0.5% | 2026-Q1 |
| Public Sector Pension Investment Board added | 64,535 | $3M | 0.4% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 56,675 | $2M | 0.4% | 2026-Q1 |
| FRANKLIN RESOURCES INC trimmed | 56,492 | $2M | 0.4% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 47,461 | $2M | 0.3% | 2026-Q1 |
| INTECH INVESTMENT MANAGEMENT LLC added | 44,714 | $2M | 0.3% | 2026-Q1 |
| Nuveen, LLC trimmed | 43,300 | $2M | 0.3% | 2026-Q1 |
| Legal & General Group Plc trimmed | 42,027 | $2M | 0.3% | 2026-Q1 |
| GLOBEFLEX CAPITAL L P | 37,380 | $2M | 0.3% | 2026-Q1 |
| Swiss National Bank | 36,820 | $2M | 0.2% | 2026-Q1 |
| WINTON GROUP Ltd trimmed | 33,133 | $1M | 0.2% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 32,616 | $1M | 0.2% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 31,931 | $1M | 0.2% | 2026-Q1 |
| FMR LLC added | 30,084 | $1M | 0.2% | 2026-Q1 |
| SEI INVESTMENTS CO added | 26,900 | $1M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 24,522 | $1M | 0.2% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 23,999 | $1M | 0.2% | 2026-Q1 |
| EverSource Wealth Advisors, LLC added | 3,067 | $1M | 0.2% | 2026-Q1 |
| Trexquant Investment LP trimmed | 23,344 | $1M | 0.2% | 2026-Q1 |
| Campbell & CO Investment Adviser LLC added | 23,015 | $1M | 0.2% | 2026-Q1 |
| Quantinno Capital Management LP added | 21,689 | $950K | 0.1% | 2026-Q1 |
| SummerHaven Investment Management, LLC trimmed | 21,594 | $945K | 0.1% | 2026-Q1 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC added | 20,769 | $909K | 0.1% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 20,945 | $903K | 0.1% | 2026-Q1 |
| Cerity Partners LLC trimmed | 19,721 | $863K | 0.1% | 2026-Q1 |
| Ellsworth Advisors, LLC new | 18,848 | $825K | 0.1% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC trimmed | 18,471 | $809K | 0.1% | 2026-Q1 |
| ALPS ADVISORS INC trimmed | 18,010 | $788K | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 17,982 | $787K | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 17,280 | $757K | 0.1% | 2026-Q1 |
| CITIGROUP INC trimmed | 16,953 | $742K | 0.1% | 2026-Q1 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC added | 16,951 | $742K | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. | 17,490 | $723K | 0.1% | 2026-Q1 |
| ROYCE & ASSOCIATES LP trimmed | 15,656 | $685K | 0.1% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 14,132 | $619K | 0.1% | 2026-Q1 |
| EntryPoint Capital, LLC | 13,580 | $595K | 0.1% | 2026-Q1 |
| PNC FINANCIAL SERVICES GROUP, INC. trimmed | 13,454 | $589K | 0.1% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 12,567 | $550K | 0.1% | 2026-Q1 |
| Hennion & Walsh Asset Management, Inc. trimmed | 12,171 | $533K | 0.1% | 2026-Q1 |
| Thrivent Financial for Lutherans trimmed | 12,034 | $527K | 0.1% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC trimmed | 11,995 | $525K | 0.1% | 2026-Q1 |
| Rafferty Asset Management, LLC trimmed | 11,929 | $522K | 0.1% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 11,850 | $519K | 0.1% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 11,580 | $507K | 0.1% | 2026-Q1 |
| ExodusPoint Capital Management, LP trimmed | 11,505 | $504K | 0.1% | 2026-Q1 |
| BARCLAYS PLC trimmed | 11,345 | $497K | 0.1% | 2026-Q1 |
| XTX Topco Ltd added | 11,075 | $485K | 0.1% | 2026-Q1 |
| R Squared Ltd trimmed | 10,937 | $479K | 0.1% | 2026-Q1 |
| Brevan Howard Capital Management LP new | 10,514 | $460K | 0.1% | 2026-Q1 |
| NATIXIS ADVISORS, LLC new | 10,456 | $458K | 0.1% | 2026-Q1 |
| Pathstone Holdings, LLC trimmed | 10,433 | $457K | 0.1% | 2026-Q1 |
| FIRST MANHATTAN CO. LLC. trimmed | 10,300 | $455K | 0.1% | 2026-Q1 |
| Y-Intercept (Hong Kong) Ltd trimmed | 10,184 | $446K | 0.1% | 2026-Q1 |
| MetLife Investment Management, LLC trimmed | 9,774 | $428K | 0.1% | 2026-Q1 |
| State of Alaska, Department of Revenue trimmed | 9,652 | $422K | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 1,157,768 | $48M | 7.3% | 2025-Q4 stale |
| Verition Fund Management LLC trimmed | 303,586 | $13M | 1.9% | 2025-Q4 stale |
| TWO SIGMA ADVISERS, LP added | 71,706 | $3M | 0.5% | 2025-Q4 stale |
| Brandywine Global Investment Management, LLC trimmed | 33,722 | $1M | 0.2% | 2025-Q4 stale |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM trimmed | 27,348 | $1M | 0.2% | 2025-Q4 stale |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 27,359 | $914K | 0.1% | 2025-Q2 stale |
| MARSHALL WACE, LLP added | 26,493 | $808K | 0.1% | 2025-Q1 stale |
| Qube Research & Technologies Ltd added | 23,857 | $727K | 0.1% | 2025-Q1 stale |
| D. E. Shaw & Co., Inc. trimmed | 21,433 | $716K | 0.1% | 2025-Q2 stale |
| MARTINGALE ASSET MANAGEMENT L P trimmed | 14,330 | $592K | 0.1% | 2025-Q4 stale |
| Numerai GP LLC added | 18,263 | $557K | 0.1% | 2025-Q1 stale |
| NJ State Employees Deferred Compensation Plan | 14,000 | $508K | 0.1% | 2025-Q3 stale |
| Horizon Investments, LLC new | 14,881 | $497K | 0.1% | 2025-Q2 stale |
| GSA CAPITAL PARTNERS LLP trimmed | 11,442 | $473K | 0.1% | 2025-Q4 stale |
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.