Who owns CBLL (CBLL)
Which tracked institutional funds hold CBLL, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See CBLL company fundamentals →
Ownership as of the 2026-Q1 13F filings. 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
21 tracked funds added or opened CBLL while 39 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
CBLL’s largest tracked holder by dollar value, FMR LLC, 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 CBLL 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 122 tracked filers holding CBLL, 72 increased or opened the position and 51 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
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 CBLL 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 11
- VANGUARD CAPITAL MANAGEMENT LLC$21M
- VANGUARD PORTFOLIO MANAGEMENT LLC$4M
- VANGUARD FIDUCIARY TRUST CO$3M
- D. E. Shaw & Co., Inc.$2M
- WELLINGTON MANAGEMENT GROUP LLP$2M
- Point72 Asset Management, L.P.$1M
Full exits 8
- VANGUARD GROUP INC$30M
- TWO SIGMA ADVISERS, LP$5M
- Divisadero Street Capital Management, LP$4M
- HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$1M
- MARSHALL WACE, LLP$988K
- Squarepoint Ops LLC$884K
Largest adds
- MILLENNIUM MANAGEMENT LLC$6M
- KCM Capital Inc$4M
- FRANKLIN RESOURCES INC$3M
- ADAGE CAPITAL PARTNERS GP, L.L.C.$3M
- Creek Drive Management Group LLC$2M
- CITADEL ADVISORS LLC$1M
Largest trims
- TPG GP A, LLC$14M
- RED TREE MANAGEMENT, LLC$8M
- FMR LLC$7M
- BlackRock, Inc.$7M
- Bank of New York Mellon Corp$6M
- TimesSquare Capital Management, LLC$4M
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 |
|---|---|---|---|---|
| FMR LLC added | 4,299,648 | $79M | 12.1% | 2026-Q1 |
| TPG GP A, LLC | 3,967,422 | $73M | 11.1% | 2026-Q1 |
| RED TREE MANAGEMENT, LLC | 2,205,661 | $40M | 6.2% | 2026-Q1 |
| BlackRock, Inc. trimmed | 1,813,155 | $33M | 5.1% | 2026-Q1 |
| KCM Capital Inc added | 1,400,000 | $26M | 3.9% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 1,160,767 | $21M | 3.3% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,137,132 | $21M | 3.2% | 2026-Q1 |
| FEDERATED HERMES, INC. added | 939,464 | $17M | 2.6% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 809,514 | $15M | 2.3% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 756,751 | $14M | 2.1% | 2026-Q1 |
| TimesSquare Capital Management, LLC trimmed | 716,468 | $13M | 2.0% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 611,977 | $11M | 1.7% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 552,021 | $10M | 1.5% | 2026-Q1 |
| Yu Fan | 549,448 | $10M | 1.5% | 2026-Q1 |
| STATE STREET CORP added | 525,432 | $10M | 1.5% | 2026-Q1 |
| ROYCE & ASSOCIATES LP trimmed | 515,720 | $9M | 1.4% | 2026-Q1 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ added | 508,490 | $9M | 1.4% | 2026-Q1 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed | 489,742 | $9M | 1.4% | 2026-Q1 |
| ABG-WTT Global Life Science Capital Partners GP Ltd | 441,820 | $8M | 1.2% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 411,031 | $8M | 1.2% | 2026-Q1 |
| Redmile Group, LLC trimmed | 386,786 | $7M | 1.1% | 2026-Q1 |
| PEREGRINE CAPITAL MANAGEMENT LLC trimmed | 348,219 | $6M | 1.0% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 326,032 | $6M | 0.9% | 2026-Q1 |
| Creek Drive Management Group LLC added | 323,000 | $6M | 0.9% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 319,837 | $6M | 0.9% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 288,114 | $5M | 0.8% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 287,206 | $5M | 0.8% | 2026-Q1 |
| MORGAN STANLEY added | 230,918 | $4M | 0.6% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 214,201 | $4M | 0.6% | 2026-Q1 |
| NORTHERN TRUST CORP added | 190,711 | $3M | 0.5% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 189,482 | $3M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 163,066 | $3M | 0.5% | 2026-Q1 |
| LORD, ABBETT & CO. LLC trimmed | 159,597 | $3M | 0.4% | 2026-Q1 |
| Quantinno Capital Management LP added | 140,347 | $3M | 0.4% | 2026-Q1 |
| HRT FINANCIAL LP trimmed | 135,423 | $2M | 0.4% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 105,973 | $2M | 0.3% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 88,502 | $2M | 0.2% | 2026-Q1 |
| EMERALD MUTUAL FUND ADVISERS TRUST trimmed | 88,354 | $2M | 0.2% | 2026-Q1 |
| F/m Investments LLC trimmed | 88,354 | $2M | 0.2% | 2026-Q1 |
| D. E. Shaw & Co., Inc. new | 84,721 | $2M | 0.2% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP new | 83,126 | $2M | 0.2% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 77,733 | $1M | 0.2% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 61,545 | $1M | 0.2% | 2026-Q1 |
| Jump Financial, LLC trimmed | 70,300 | $1M | 0.2% | 2026-Q1 |
| Numerai GP LLC new | 69,052 | $1M | 0.2% | 2026-Q1 |
| Voleon Capital Management LP added | 61,038 | $1M | 0.2% | 2026-Q1 |
| Nuveen, LLC added | 54,874 | $1M | 0.2% | 2026-Q1 |
| PDT Partners, LLC | 52,725 | $966K | 0.1% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 50,915 | $933K | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO added | 50,360 | $923K | 0.1% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 42,971 | $788K | 0.1% | 2026-Q1 |
| JACOBS LEVY EQUITY MANAGEMENT, INC new | 42,956 | $787K | 0.1% | 2026-Q1 |
| CITIGROUP INC added | 42,546 | $780K | 0.1% | 2026-Q1 |
| UBS Group AG trimmed | 36,822 | $675K | 0.1% | 2026-Q1 |
| XTX Topco Ltd added | 31,777 | $582K | 0.1% | 2026-Q1 |
| FORMULA GROWTH LTD new | 31,000 | $568K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 30,790 | $564K | 0.1% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 28,486 | $522K | 0.1% | 2026-Q1 |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. new | 28,050 | $514K | 0.1% | 2026-Q1 |
| BARCLAYS PLC trimmed | 27,433 | $503K | 0.1% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 23,180 | $425K | 0.1% | 2026-Q1 |
| Mission Creek Capital Partners, Inc. new | 23,116 | $424K | 0.1% | 2026-Q1 |
| Verition Fund Management LLC added | 22,716 | $416K | 0.1% | 2026-Q1 |
| Inscription Capital, LLC added | 22,163 | $406K | 0.1% | 2026-Q1 |
| Gryphon Financial Partners LLC | 20,063 | $368K | 0.1% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 19,624 | $360K | 0.1% | 2026-Q1 |
| Y-Intercept (Hong Kong) Ltd new | 18,625 | $341K | 0.1% | 2026-Q1 |
| Invesco Ltd. added | 18,511 | $339K | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 18,231 | $335K | 0.1% | 2026-Q1 |
| Centiva Capital, LP new | 16,412 | $301K | 0.0% | 2026-Q1 |
| MetLife Investment Management, LLC | 15,365 | $282K | 0.0% | 2026-Q1 |
| BOOTHBAY FUND MANAGEMENT, LLC trimmed | 14,410 | $264K | 0.0% | 2026-Q1 |
| Brevan Howard Capital Management LP new | 14,204 | $260K | 0.0% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 1,345,943 | $30M | 4.5% | 2025-Q4 stale |
| NOVO HOLDINGS A/S added | 900,000 | $17M | 2.6% | 2025-Q2 stale |
| RA CAPITAL MANAGEMENT, L.P. | 824,582 | $16M | 2.4% | 2025-Q1 stale |
| Board of Trustees of The Leland Stanford Junior University | 623,751 | $12M | 1.8% | 2025-Q1 stale |
| CenterBook Partners LP added | 476,554 | $5M | 0.8% | 2025-Q3 stale |
| Driehaus Capital Management LLC trimmed | 279,079 | $5M | 0.8% | 2025-Q1 stale |
| TWO SIGMA ADVISERS, LP added | 235,900 | $5M | 0.8% | 2025-Q4 stale |
| Soleus Capital Management, L.P. added | 360,000 | $4M | 0.6% | 2025-Q3 stale |
| Divisadero Street Capital Management, LP new | 188,506 | $4M | 0.6% | 2025-Q4 stale |
| NEXT CENTURY GROWTH INVESTORS LLC trimmed | 199,082 | $4M | 0.6% | 2025-Q2 stale |
| RTW INVESTMENTS, LP | 150,000 | $3M | 0.4% | 2025-Q2 stale |
| ORBIMED ADVISORS LLC | 112,500 | $2M | 0.3% | 2025-Q1 stale |
| Alyeska Investment Group, L.P. trimmed | 75,000 | $1M | 0.2% | 2025-Q1 stale |
| EMERALD ADVISERS, LLC trimmed | 122,944 | $1M | 0.2% | 2025-Q3 stale |
| STATE OF WISCONSIN INVESTMENT BOARD added | 72,034 | $1M | 0.2% | 2025-Q1 stale |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND new | 47,527 | $1M | 0.2% | 2025-Q4 stale |
| MARSHALL WACE, LLP trimmed | 45,061 | $988K | 0.2% | 2025-Q4 stale |
| Squarepoint Ops LLC added | 40,296 | $884K | 0.1% | 2025-Q4 stale |
| Trexquant Investment LP added | 38,846 | $852K | 0.1% | 2025-Q4 stale |
| Walleye Capital LLC added | 36,988 | $811K | 0.1% | 2025-Q4 stale |
| FRED ALGER MANAGEMENT, LLC trimmed | 28,791 | $539K | 0.1% | 2025-Q2 stale |
| SOROS FUND MANAGEMENT LLC added | 25,356 | $487K | 0.1% | 2025-Q1 stale |
| Eversept Partners, LP | 17,094 | $375K | 0.1% | 2025-Q4 stale |
| Swiss National Bank added | 31,500 | $362K | 0.1% | 2025-Q3 stale |
| Quadrature Capital Ltd new | 16,960 | $317K | 0.0% | 2025-Q2 stale |
| nVerses Capital, LLC new | 12,838 | $282K | 0.0% | 2025-Q4 stale |
| Engineers Gate Manager LP new | 11,849 | $260K | 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.