Who owns Amerant Bancorp (AMTB)
Which tracked institutional funds hold AMTB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See AMTB 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
44 tracked funds added or opened AMTB while 25 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
AMTB’s largest tracked holder by dollar value, WELLINGTON MANAGEMENT GROUP LLP, 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 AMTB 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 150 tracked filers holding AMTB, 82 increased or opened the position and 66 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 AMTB 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 12
- VANGUARD CAPITAL MANAGEMENT LLC$39M
- North Reef Capital Management LP$26M
- VANGUARD PORTFOLIO MANAGEMENT LLC$9M
- VANGUARD FIDUCIARY TRUST CO$6M
- FJ Capital Management LLC$5M
- Man Group plc$2M
Full exits 10
- VANGUARD GROUP INC$47M
- TWO SIGMA ADVISERS, LP$4M
- Bridgewater Associates, LP$2M
- Point72 Asset Management, L.P.$2M
- Allspring Global Investments Holdings, LLC$1M
- RENAISSANCE TECHNOLOGIES LLC$1M
Largest adds
- UBS Group AG$17M
- WELLINGTON MANAGEMENT GROUP LLP$11M
- AMERICAN CENTURY COMPANIES INC$7M
- DIMENSIONAL FUND ADVISORS LP$6M
- BlackRock, Inc.$6M
- Patriot Financial Partners GP II, L.P.$5M
Largest trims
- Verition Fund Management LLC$5M
- D. E. Shaw & Co., Inc.$2M
- BOOTHBAY FUND MANAGEMENT, LLC$1M
- MORGAN STANLEY$1M
- Brevan Howard Capital Management LP$1M
- ALLIANCEBERNSTEIN L.P.$1M
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 |
|---|---|---|---|---|
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 5,392,594 | $138M | 17.6% | 2026-Q2 |
| BlackRock, Inc. added | 2,828,855 | $72M | 9.2% | 2026-Q2 |
| Patriot Financial Partners GP II, L.P. trimmed | 2,257,283 | $50M | 6.4% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,773,023 | $39M | 5.0% | 2026-Q1 |
| STATE STREET CORP added | 1,263,067 | $32M | 4.1% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 1,388,926 | $31M | 3.9% | 2026-Q1 |
| North Reef Capital Management LP added | 1,160,488 | $26M | 3.3% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 915,696 | $20M | 2.6% | 2026-Q1 |
| UBS Group AG added | 875,721 | $19M | 2.5% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 700,533 | $18M | 2.3% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 528,240 | $12M | 1.5% | 2026-Q1 |
| MALTESE CAPITAL MANAGEMENT LLC trimmed | 492,500 | $11M | 1.4% | 2026-Q1 |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC trimmed | 470,678 | $10M | 1.3% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 418,545 | $9M | 1.2% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 361,363 | $8M | 1.0% | 2026-Q1 |
| NORTHERN TRUST CORP added | 302,618 | $7M | 0.9% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 299,767 | $7M | 0.8% | 2026-Q1 |
| MENDON CAPITAL ADVISORS CORP trimmed | 273,308 | $6M | 0.8% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC added | 264,730 | $6M | 0.7% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 254,519 | $6M | 0.7% | 2026-Q1 |
| Curi Capital, LLC trimmed | 250,056 | $6M | 0.7% | 2026-Q1 |
| FJ Capital Management LLC new | 245,913 | $5M | 0.7% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 200,151 | $5M | 0.7% | 2026-Q2 |
| Verition Fund Management LLC trimmed | 230,500 | $5M | 0.6% | 2026-Q1 |
| PEREGRINE CAPITAL MANAGEMENT LLC trimmed | 213,377 | $5M | 0.6% | 2026-Q1 |
| SEI INVESTMENTS CO added | 198,326 | $4M | 0.6% | 2026-Q1 |
| CSM Advisors, LLC trimmed | 196,095 | $4M | 0.6% | 2026-Q1 |
| PERRY CREEK CAPITAL LP | 196,140 | $4M | 0.6% | 2026-Q1 |
| BANC FUNDS CO LLC | 180,000 | $4M | 0.5% | 2026-Q1 |
| Empowered Funds, LLC added | 164,730 | $4M | 0.5% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 142,084 | $4M | 0.5% | 2026-Q2 |
| ESSEX INVESTMENT MANAGEMENT CO LLC added | 156,818 | $3M | 0.4% | 2026-Q1 |
| Bank of New York Mellon Corp added | 146,319 | $3M | 0.4% | 2026-Q1 |
| BOOTHBAY FUND MANAGEMENT, LLC trimmed | 120,685 | $3M | 0.3% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 117,639 | $3M | 0.3% | 2026-Q1 |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY | 106,224 | $2M | 0.3% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 90,139 | $2M | 0.3% | 2026-Q2 |
| Man Group plc new | 91,551 | $2M | 0.3% | 2026-Q1 |
| MARSHALL WACE, LLP added | 78,614 | $2M | 0.3% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 82,502 | $2M | 0.2% | 2026-Q1 |
| Nuveen, LLC added | 81,329 | $2M | 0.2% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 78,525 | $2M | 0.2% | 2026-Q1 |
| ALGERT GLOBAL LLC | 74,180 | $2M | 0.2% | 2026-Q1 |
| Swiss National Bank added | 73,537 | $2M | 0.2% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 77,490 | $2M | 0.2% | 2026-Q1 |
| MORGAN STANLEY trimmed | 68,346 | $2M | 0.2% | 2026-Q1 |
| Invesco Ltd. trimmed | 55,787 | $1M | 0.2% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 63,806 | $1M | 0.2% | 2026-Q1 |
| Numerai GP LLC added | 59,285 | $1M | 0.2% | 2026-Q1 |
| PMC FIG Opportunities LLC trimmed | 58,441 | $1M | 0.2% | 2026-Q1 |
| Quantinno Capital Management LP added | 55,210 | $1M | 0.2% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC new | 55,095 | $1M | 0.2% | 2026-Q1 |
| Trexquant Investment LP trimmed | 53,914 | $1M | 0.2% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 50,603 | $1M | 0.1% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 49,810 | $1M | 0.1% | 2026-Q1 |
| Legato Capital Management LLC trimmed | 48,735 | $1M | 0.1% | 2026-Q1 |
| Jump Financial, LLC trimmed | 47,303 | $1M | 0.1% | 2026-Q1 |
| JACOBS LEVY EQUITY MANAGEMENT, INC added | 44,999 | $992K | 0.1% | 2026-Q1 |
| Creative Planning added | 41,802 | $921K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 39,862 | $879K | 0.1% | 2026-Q1 |
| XTX Topco Ltd added | 36,661 | $808K | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 34,329 | $757K | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 28,508 | $728K | 0.1% | 2026-Q2 |
| STRS OHIO | 31,300 | $690K | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 30,266 | $667K | 0.1% | 2026-Q1 |
| BARCLAYS PLC trimmed | 30,100 | $663K | 0.1% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 26,988 | $595K | 0.1% | 2026-Q1 |
| Legal & General Group Plc trimmed | 26,959 | $594K | 0.1% | 2026-Q1 |
| Daytona Street Capital LLC added | 25,840 | $585K | 0.1% | 2026-Q1 |
| Rafferty Asset Management, LLC trimmed | 25,183 | $555K | 0.1% | 2026-Q1 |
| FRANKLIN RESOURCES INC new | 24,419 | $538K | 0.1% | 2026-Q1 |
| CITIGROUP INC trimmed | 23,889 | $527K | 0.1% | 2026-Q1 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 23,674 | $522K | 0.1% | 2026-Q1 |
| EntryPoint Capital, LLC | 23,364 | $515K | 0.1% | 2026-Q1 |
| Inspire Investing, LLC trimmed | 23,218 | $512K | 0.1% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC added | 22,637 | $499K | 0.1% | 2026-Q1 |
| HRT FINANCIAL LP added | 22,150 | $488K | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC added | 2,424,944 | $47M | 6.0% | 2025-Q4 stale |
| PATRIOT FINANCIAL PARTNERS GP, LP | 2,315,589 | $42M | 5.4% | 2025-Q2 stale |
| Philadelphia Financial Management of San Francisco, LLC added | 563,973 | $12M | 1.5% | 2025-Q1 stale |
| Azora Capital LP trimmed | 520,996 | $11M | 1.4% | 2025-Q1 stale |
| ENDEAVOUR CAPITAL ADVISORS INC added | 391,671 | $7M | 0.9% | 2025-Q2 stale |
| Foundry Partners, LLC trimmed | 220,250 | $5M | 0.6% | 2025-Q1 stale |
| KENNEDY CAPITAL MANAGEMENT LLC trimmed | 223,752 | $4M | 0.6% | 2025-Q3 stale |
| TWO SIGMA ADVISERS, LP trimmed | 217,300 | $4M | 0.5% | 2025-Q4 stale |
| JCSD Capital, LLC | 135,260 | $3M | 0.3% | 2025-Q3 stale |
| Bridgewater Associates, LP trimmed | 98,038 | $2M | 0.2% | 2025-Q4 stale |
| Cubist Systematic Strategies, LLC added | 82,896 | $2M | 0.2% | 2025-Q3 stale |
| Point72 Asset Management, L.P. added | 79,016 | $2M | 0.2% | 2025-Q4 stale |
| Allspring Global Investments Holdings, LLC trimmed | 69,954 | $1M | 0.2% | 2025-Q4 stale |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 67,635 | $1M | 0.2% | 2025-Q4 stale |
| Engineers Gate Manager LP added | 61,332 | $1M | 0.2% | 2025-Q4 stale |
| Fourthstone LLC new | 52,600 | $959K | 0.1% | 2025-Q2 stale |
| MILLENNIUM MANAGEMENT LLC trimmed | 44,310 | $864K | 0.1% | 2025-Q4 stale |
| Rhino Investment Partners, Inc trimmed | 46,249 | $843K | 0.1% | 2025-Q2 stale |
| Allianz Asset Management GmbH new | 38,097 | $695K | 0.1% | 2025-Q2 stale |
| SummerHaven Investment Management, LLC added | 35,035 | $639K | 0.1% | 2025-Q2 stale |
| HSBC HOLDINGS PLC new | 29,662 | $583K | 0.1% | 2025-Q4 stale |
| Thrivent Financial for Lutherans trimmed | 26,698 | $521K | 0.1% | 2025-Q4 stale |
| EJF Capital LLC added | 26,031 | $502K | 0.1% | 2025-Q3 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.