Who owns CMBT
Which tracked institutional funds hold CMBT, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See CMBT company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-02). 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
38 tracked funds added or opened CMBT while 28 trimmed or exited it between 2026-Q1 and 2026-Q2 — 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
CMBT’s largest tracked holder by dollar value, ARROWSTREET CAPITAL, LIMITED PARTNERSHIP, 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 CMBT 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 160 tracked filers holding CMBT, 73 increased or opened the position and 78 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
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 CMBT 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.
New buyers 10
- DIMENSIONAL FUND ADVISORS LP$8M
- Y-Intercept (Hong Kong) Ltd$3M
- AQR CAPITAL MANAGEMENT LLC$2M
- WEXFORD CAPITAL LP$1M
- SPROTT INC.$1M
- Man Group plc$1M
Full exits 7
- Jump Financial, LLC$8M
- Oceanic Investment Management LTD$7M
- D. E. Shaw & Co., Inc.$6M
- Aquatic Capital Management LLC$5M
- SG Americas Securities, LLC$3M
- HRT FINANCIAL LP$2M
Largest adds
- NORGES BANK$28M
- MARSHALL WACE, LLP$21M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$21M
- TWO SIGMA INVESTMENTS, LP$20M
- BARCLAYS PLC$15M
- UBS Group AG$15M
Largest trims
- Encompass Capital Advisors LLC$40M
- RENAISSANCE TECHNOLOGIES LLC$11M
- Walleye Capital LLC$6M
- MILLENNIUM MANAGEMENT LLC$6M
- Point72 Asset Management, L.P.$6M
- BANK OF AMERICA CORP /DE/$3M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 3,541,413 | $50M | 7.8% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 3,295,360 | $47M | 7.3% | 2026-Q2 |
| FOLKETRYGDFONDET | 2,816,940 | $39M | 6.2% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 2,530,477 | $35M | 5.6% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 2,311,168 | $32M | 5.1% | 2026-Q2 |
| NORGES BANK added | 2,282,809 | $32M | 5.0% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 2,101,372 | $29M | 4.6% | 2026-Q2 |
| BARCLAYS PLC added | 1,683,560 | $24M | 3.7% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 1,564,772 | $22M | 3.5% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 1,539,468 | $22M | 3.4% | 2026-Q2 |
| MARSHALL WACE, LLP added | 1,525,003 | $21M | 3.4% | 2026-Q2 |
| MORGAN STANLEY trimmed | 1,509,906 | $21M | 3.3% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 1,369,295 | $19M | 3.0% | 2026-Q2 |
| UBS Group AG added | 1,257,102 | $18M | 2.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO | 969,918 | $14M | 2.2% | 2026-Q2 |
| CITIGROUP INC added | 941,265 | $13M | 2.1% | 2026-Q2 |
| FEARNLEY ASSET MANAGEMENT AS added | 862,071 | $12M | 1.9% | 2026-Q2 |
| Melqart Asset Management (UK) Ltd added | 830,385 | $12M | 1.8% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 824,963 | $12M | 1.8% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 733,427 | $10M | 1.6% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 659,727 | $9M | 1.5% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP new | 603,063 | $8M | 1.3% | 2026-Q2 |
| PDT Partners, LLC added | 592,918 | $8M | 1.3% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 573,199 | $8M | 1.3% | 2026-Q2 |
| Trexquant Investment LP trimmed | 568,118 | $8M | 1.2% | 2026-Q2 |
| BTG Pactual Asset Management US LLC added | 559,729 | $8M | 1.2% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 518,932 | $7M | 1.1% | 2026-Q2 |
| Nuveen, LLC added | 467,324 | $7M | 1.0% | 2026-Q2 |
| Allianz Asset Management GmbH | 380,147 | $5M | 0.8% | 2026-Q2 |
| GRAHAM CAPITAL WEALTH MANAGEMENT, LLC trimmed | 335,831 | $5M | 0.7% | 2026-Q2 |
| Encompass Capital Advisors LLC trimmed | 334,456 | $5M | 0.7% | 2026-Q2 |
| Marnell Management LLC added | 311,109 | $4M | 0.7% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 307,920 | $4M | 0.7% | 2026-Q2 |
| XTX Topco Ltd trimmed | 254,338 | $4M | 0.6% | 2026-Q2 |
| OCCUDO QUANTITATIVE STRATEGIES LP added | 230,730 | $3M | 0.5% | 2026-Q2 |
| Swiss National Bank trimmed | 221,908 | $3M | 0.5% | 2026-Q2 |
| LPL Financial LLC trimmed | 209,578 | $3M | 0.5% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 206,537 | $3M | 0.5% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC trimmed | 193,932 | $3M | 0.4% | 2026-Q2 |
| Y-Intercept (Hong Kong) Ltd new | 190,473 | $3M | 0.4% | 2026-Q2 |
| Quantbot Technologies LP trimmed | 175,190 | $2M | 0.4% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC new | 124,263 | $2M | 0.3% | 2026-Q2 |
| GROUP ONE TRADING LLC added | 120,799 | $2M | 0.3% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC added | 119,014 | $2M | 0.3% | 2026-Q2 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 114,302 | $2M | 0.3% | 2026-Q2 |
| Legal & General Group Plc trimmed | 113,771 | $2M | 0.3% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 109,181 | $2M | 0.2% | 2026-Q2 |
| WEXFORD CAPITAL LP new | 103,900 | $1M | 0.2% | 2026-Q2 |
| SPROTT INC. new | 100,000 | $1M | 0.2% | 2026-Q2 |
| Persistent Asset Partners Ltd trimmed | 97,131 | $1M | 0.2% | 2026-Q2 |
| Walleye Capital LLC trimmed | 93,099 | $1M | 0.2% | 2026-Q2 |
| Man Group plc new | 87,321 | $1M | 0.2% | 2026-Q2 |
| J. Safra Sarasin Holding AG new | 80,754 | $1M | 0.2% | 2026-Q2 |
| SIERRA SUMMIT ADVISORS LLC new | 77,508 | $1M | 0.2% | 2026-Q2 |
| Mariner, LLC added | 73,900 | $1M | 0.2% | 2026-Q2 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main new | 70,000 | $992K | 0.2% | 2026-Q2 |
| WINTON GROUP Ltd added | 69,800 | $977K | 0.2% | 2026-Q2 |
| Engineers Gate Manager LP trimmed | 67,954 | $951K | 0.1% | 2026-Q2 |
| Kovack Advisors, Inc. | 63,698 | $891K | 0.1% | 2026-Q2 |
| Numerai GP LLC trimmed | 63,033 | $882K | 0.1% | 2026-Q2 |
| Graham Capital Management, L.P. new | 62,524 | $875K | 0.1% | 2026-Q2 |
| Centiva Capital, LP added | 60,145 | $841K | 0.1% | 2026-Q2 |
| Summit Financial, LLC added | 55,877 | $782K | 0.1% | 2026-Q2 |
| BlackRock, Inc. trimmed | 52,840 | $739K | 0.1% | 2026-Q2 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | 51,269 | $717K | 0.1% | 2026-Q2 |
| Quantinno Capital Management LP added | 51,092 | $715K | 0.1% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 46,402 | $649K | 0.1% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 44,197 | $618K | 0.1% | 2026-Q2 |
| Bellecapital International Ltd. added | 43,711 | $619K | 0.1% | 2026-Q2 |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 42,519 | $603K | 0.1% | 2026-Q2 |
| Sigma Planning Corp trimmed | 39,771 | $556K | 0.1% | 2026-Q2 |
| HIGHLAND CAPITAL MANAGEMENT, LLC added | 36,800 | $515K | 0.1% | 2026-Q2 |
| FMR LLC trimmed | 35,313 | $500K | 0.1% | 2026-Q2 |
| CenterBook Partners LP new | 34,869 | $488K | 0.1% | 2026-Q2 |
| Vanguard Global Advisers, LLC added | 34,446 | $488K | 0.1% | 2026-Q2 |
| Vident Advisory, LLC trimmed | 33,810 | $473K | 0.1% | 2026-Q2 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | 33,391 | $467K | 0.1% | 2026-Q2 |
| OSAIC HOLDINGS, INC. trimmed | 32,466 | $454K | 0.1% | 2026-Q2 |
| GTS SECURITIES LLC new | 32,293 | $452K | 0.1% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 31,095 | $435K | 0.1% | 2026-Q2 |
| Vanguard Investments Australia, Ltd. trimmed | 30,149 | $427K | 0.1% | 2026-Q2 |
| Pictet Asset Management Holding SA added | 29,468 | $418K | 0.1% | 2026-Q2 |
| Vanguard Personalized Indexing Management, LLC added | 25,972 | $363K | 0.1% | 2026-Q2 |
| Focus Partners Wealth trimmed | 25,712 | $360K | 0.1% | 2026-Q2 |
| IMC-Chicago, LLC trimmed | 25,158 | $352K | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 23,922 | $303K | 0.0% | 2026-Q2 |
| HARVEY CAPITAL MANAGEMENT INC added | 21,000 | $294K | 0.0% | 2026-Q2 |
| Jain Global LLC new | 20,757 | $290K | 0.0% | 2026-Q2 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO trimmed | 20,507 | $291K | 0.0% | 2026-Q2 |
| Orion Porfolio Solutions, LLC added | 20,499 | $287K | 0.0% | 2026-Q2 |
| National Philanthropic Trust trimmed | 19,548 | $273K | 0.0% | 2026-Q2 |
| BFSG, LLC added | 19,079 | $267K | 0.0% | 2026-Q2 |
| Everstar Asset Management, LLC added | 18,589 | $260K | 0.0% | 2026-Q2 |
| Susquehanna Portfolio Strategies, LLC | 15,926 | $223K | 0.0% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 15,797 | $221K | 0.0% | 2026-Q2 |
| Cerity Partners LLC trimmed | 15,653 | $219K | 0.0% | 2026-Q2 |
| Jefferies Financial Group Inc. trimmed | 14,380 | $203K | 0.0% | 2026-Q2 |
| Creative Planning trimmed | 13,645 | $191K | 0.0% | 2026-Q2 |
| SBI Securities Co., Ltd. added | 12,973 | $181K | 0.0% | 2026-Q2 |
| Savant Capital, LLC new | 12,945 | $181K | 0.0% | 2026-Q2 |
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.