Who owns American Bitcoin Corp (ABTC)
Which tracked institutional funds hold ABTC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ABTC 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
10 tracked funds added or opened ABTC while 19 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
ABTC’s largest tracked holder by dollar value, MYDA Advisors LLC, sizes it at 1.7% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 1.7pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ABTC 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 142 tracked filers holding ABTC, 77 increased or opened the position and 52 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 ABTC 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 3
- RENAISSANCE TECHNOLOGIES LLC$2M
- VANGUARD CAPITAL MANAGEMENT LLC$1M
- VANGUARD FIDUCIARY TRUST CO$649K
Full exits 3
- VANGUARD GROUP INC$4M
- Quadrature Capital Ltd$2M
- United Capital Management of KS, Inc.$1M
Largest adds
- HRT FINANCIAL LP$2M
- PNC FINANCIAL SERVICES GROUP, INC.$806K
- CITADEL ADVISORS LLC$755K
- GOLDMAN SACHS GROUP INC$394K
- UBS Group AG$311K
- Bank of New York Mellon Corp$295K
Largest trims
- CHARLES SCHWAB INVESTMENT MANAGEMENT INC$5M
- TWO SIGMA INVESTMENTS, LP$4M
- STATE STREET CORP$3M
- BlackRock, Inc.$2M
- Providence Capital Advisors, LLC$2M
- MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.$2M
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. added | 3,648,400 | $3M | 6.5% | 2026-Q1 |
| HRT FINANCIAL LP added | 3,131,876 | $3M | 5.6% | 2026-Q1 |
| Providence Capital Advisors, LLC | 2,496,762 | $2M | 4.4% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 1,871,780 | $2M | 3.3% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 1,765,180 | $2M | 3.1% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC new | 1,719,200 | $2M | 3.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,688,849 | $2M | 3.0% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 1,677,385 | $2M | 3.0% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,488,345 | $1M | 2.6% | 2026-Q1 |
| UBS Group AG added | 1,174,009 | $1M | 2.1% | 2026-Q1 |
| PNC FINANCIAL SERVICES GROUP, INC. added | 874,972 | $808K | 1.6% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 772,725 | $714K | 1.4% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 702,891 | $649K | 1.2% | 2026-Q1 |
| PCG Wealth Advisors, LLC added | 686,033 | $634K | 1.2% | 2026-Q1 |
| Daytona Street Capital LLC | 8,750 | $621K | 1.2% | 2026-Q1 |
| STATE STREET CORP trimmed | 665,636 | $615K | 1.2% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 601,126 | $556K | 1.1% | 2026-Q1 |
| RAFFLES ASSOCIATES LP trimmed | 555,000 | $513K | 1.0% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 526,972 | $487K | 0.9% | 2026-Q1 |
| GROUP ONE TRADING LLC trimmed | 470,229 | $435K | 0.8% | 2026-Q1 |
| Yorkville Advisors Global, LP new | 399,600 | $369K | 0.7% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 383,959 | $355K | 0.7% | 2026-Q1 |
| Bank of New York Mellon Corp added | 376,270 | $348K | 0.7% | 2026-Q1 |
| Vines Capital Management, LLC added | 310,646 | $287K | 0.6% | 2026-Q1 |
| Vontobel Holding Ltd. added | 309,454 | $286K | 0.5% | 2026-Q1 |
| Yu Fan new | 308,076 | $285K | 0.5% | 2026-Q1 |
| NORTHERN TRUST CORP | 298,279 | $276K | 0.5% | 2026-Q1 |
| MORGAN STANLEY added | 251,328 | $232K | 0.4% | 2026-Q1 |
| KG Capital Management added | 236,278 | $218K | 0.4% | 2026-Q1 |
| Vident Advisory, LLC trimmed | 230,456 | $212K | 0.4% | 2026-Q1 |
| Itau Unibanco Holding S.A. new | 220,335 | $204K | 0.4% | 2026-Q1 |
| CAPTRUST FINANCIAL ADVISORS trimmed | 196,419 | $182K | 0.3% | 2026-Q1 |
| Spartan Wealth Advisory Services LLC new | 173,611 | $160K | 0.3% | 2026-Q1 |
| IMC-Chicago, LLC new | 160,778 | $149K | 0.3% | 2026-Q1 |
| Principle Wealth Partners LLC added | 160,000 | $148K | 0.3% | 2026-Q1 |
| Invesco Ltd. added | 149,841 | $139K | 0.3% | 2026-Q1 |
| LPL Financial LLC added | 142,755 | $132K | 0.3% | 2026-Q1 |
| Cambridge Investment Research Advisors, Inc. added | 137,125 | $127K | 0.2% | 2026-Q1 |
| GSA CAPITAL PARTNERS LLP added | 128,269 | $119K | 0.2% | 2026-Q1 |
| HUNTER ASSOCIATES INVESTMENT MANAGEMENT LLC new | 127,248 | $117K | 0.2% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 124,973 | $116K | 0.2% | 2026-Q1 |
| Engineers Gate Manager LP trimmed | 117,498 | $109K | 0.2% | 2026-Q1 |
| SCS Capital Management LLC | 112,475 | $104K | 0.2% | 2026-Q1 |
| Procyon Advisors, LLC added | 103,500 | $96K | 0.2% | 2026-Q1 |
| INDEPENDENT FINANCIAL GROUP, LLC new | 100,700 | $93K | 0.2% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 85,508 | $79K | 0.2% | 2026-Q1 |
| Cetera Investment Advisers added | 73,887 | $68K | 0.1% | 2026-Q1 |
| GM Advisory Group, LLC | 62,586 | $58K | 0.1% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 54,305 | $50K | 0.1% | 2026-Q1 |
| Scientech Research LLC trimmed | 53,904 | $50K | 0.1% | 2026-Q1 |
| Independent Advisor Alliance new | 51,700 | $48K | 0.1% | 2026-Q1 |
| COMMONWEALTH EQUITY SERVICES, LLC added | 50,859 | $47K | 0.1% | 2026-Q1 |
| OSAIC HOLDINGS, INC. added | 47,732 | $44K | 0.1% | 2026-Q1 |
| HighTower Advisors, LLC trimmed | 43,522 | $40K | 0.1% | 2026-Q1 |
| Handelsbanken Fonder AB | 42,800 | $40K | 0.1% | 2026-Q1 |
| J. Derek Lewis & Associates Inc. | 23,000 | $39K | 0.1% | 2026-Q1 |
| KITCHING PARTNERS, LLC added | 40,816 | $38K | 0.1% | 2026-Q1 |
| MARIPAU WEALTH MANAGEMENT LLC new | 40,573 | $38K | 0.1% | 2026-Q1 |
| Marathon Trading Investment Management LLC | 39,200 | $36K | 0.1% | 2026-Q1 |
| WEDBUSH SECURITIES INC added | 35,000 | $32K | 0.1% | 2026-Q1 |
| Integrated Wealth Concepts LLC added | 34,196 | $32K | 0.1% | 2026-Q1 |
| Creative Planning added | 33,388 | $31K | 0.1% | 2026-Q1 |
| Joel Isaacson & Co., LLC | 32,899 | $30K | 0.1% | 2026-Q1 |
| CITIGROUP INC added | 32,130 | $30K | 0.1% | 2026-Q1 |
| XTX Topco Ltd trimmed | 30,107 | $28K | 0.1% | 2026-Q1 |
| Brevan Howard Capital Management LP new | 29,818 | $28K | 0.1% | 2026-Q1 |
| MADDEN SECURITIES Corp new | 29,500 | $27K | 0.1% | 2026-Q1 |
| SIMPLEX TRADING, LLC trimmed | 29,433 | $27K | 0.1% | 2026-Q1 |
| R Squared Ltd new | 25,487 | $24K | 0.0% | 2026-Q1 |
| Second Line Capital, LLC added | 19,925 | $23K | 0.0% | 2026-Q1 |
| Bogart Wealth, LLC new | 22,000 | $20K | 0.0% | 2026-Q1 |
| NINE MASTS CAPITAL Ltd new | 20,562 | $19K | 0.0% | 2026-Q1 |
| MYDA Advisors LLC new | 1,087,463 | $7M | 14.1% | 2025-Q3 stale |
| VANGUARD GROUP INC added | 2,245,541 | $4M | 7.3% | 2025-Q4 stale |
| Private Advisor Group, LLC new | 379,521 | $3M | 4.9% | 2025-Q3 stale |
| Quadrature Capital Ltd new | 911,453 | $2M | 3.0% | 2025-Q4 stale |
| United Capital Management of KS, Inc. | 724,975 | $1M | 2.4% | 2025-Q4 stale |
| PRELUDE CAPITAL MANAGEMENT, LLC new | 120,323 | $811K | 1.6% | 2025-Q3 stale |
| MARSHALL WACE, LLP new | 120,029 | $809K | 1.6% | 2025-Q3 stale |
| Solari Capital Management, LLC new | 47,123 | $318K | 0.6% | 2025-Q3 stale |
| Virtu Financial LLC added | 180,105 | $306K | 0.6% | 2025-Q4 stale |
| TWO SIGMA ADVISERS, LP new | 157,931 | $268K | 0.5% | 2025-Q4 stale |
| FOUNDATIONS INVESTMENT ADVISORS, LLC new | 130,275 | $221K | 0.4% | 2025-Q4 stale |
| Qube Research & Technologies Ltd new | 29,744 | $200K | 0.4% | 2025-Q3 stale |
| Aristides Capital LLC new | 117,600 | $200K | 0.4% | 2025-Q4 stale |
| NewEdge Advisors, LLC added | 107,539 | $183K | 0.4% | 2025-Q4 stale |
| Moloney Securities Asset Management, LLC new | 26,400 | $178K | 0.3% | 2025-Q3 stale |
| TWO SIGMA SECURITIES, LLC new | 88,789 | $151K | 0.3% | 2025-Q4 stale |
| INSIGNEO ADVISORY SERVICES, LLC new | 20,156 | $136K | 0.3% | 2025-Q3 stale |
| BANK OF NOVA SCOTIA new | 79,700 | $135K | 0.3% | 2025-Q4 stale |
| CI INVESTMENTS INC. new | 70,304 | $120K | 0.2% | 2025-Q4 stale |
| DIMENSIONAL FUND ADVISORS LP new | 14,074 | $95K | 0.2% | 2025-Q3 stale |
| Point72 Asia (Singapore) Pte. Ltd. new | 12,842 | $87K | 0.2% | 2025-Q3 stale |
| Schonfeld Strategic Advisors LLC new | 38,890 | $66K | 0.1% | 2025-Q4 stale |
| Strive Financial Group ,LLC new | 30,487 | $52K | 0.1% | 2025-Q4 stale |
| Quent Capital, LLC new | 7,662 | $52K | 0.1% | 2025-Q3 stale |
| CWA Asset Management Group, LLC new | 27,248 | $46K | 0.1% | 2025-Q4 stale |
| StoneX Group Inc. new | 22,423 | $38K | 0.1% | 2025-Q4 stale |
| Sullivan Wood Capital Management LLC new | 13,000 | $22K | 0.0% | 2025-Q4 stale |
| Leonteq Securities AG added | 12,000 | $20K | 0.0% | 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.