Who owns Bandwidth (BAND)
Which tracked institutional funds hold BAND, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See BAND company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 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
The tracked-fund tape on BAND is one-sided between 2026-Q1 and 2026-Q2: 136 added or opened and 18 trimmed or exited — on balance accumulating.
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
BAND’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 gap the other way — the median holder sizes BAND more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in BAND 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 232 tracked filers holding BAND, 168 increased or opened the position and 77 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 BAND 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 57
- Hood River Capital Management LLC$145M
- Driehaus Capital Management LLC$88M
- Portolan Capital Management, LLC$26M
- G2 Investment Partners Management LLC$23M
- JENNISON ASSOCIATES LLC$20M
- SEI INVESTMENTS CO$14M
Full exits 10
- ACADIAN ASSET MANAGEMENT LLC$15M
- CSM Advisors, LLC$8M
- Bastion Asset Management Inc.$7M
- JACOBS LEVY EQUITY MANAGEMENT, INC$3M
- Man Group plc$2M
- LAKEWOOD CAPITAL MANAGEMENT, LP$1M
Largest adds
- BlackRock, Inc.$103M
- D. E. Shaw & Co., Inc.$77M
- VANGUARD CAPITAL MANAGEMENT LLC$60M
- WELLINGTON MANAGEMENT GROUP LLP$51M
- STATE STREET CORP$47M
- JANE STREET GROUP, LLC$44M
Largest trims
- BARCLAYS PLC$4M
- Palogic Value Management, L.P.$2M
- HSBC HOLDINGS PLC$1M
- ALLIANCEBERNSTEIN L.P.$1M
- Vanguard Global Advisers, LLC$627K
- Walleye Capital LLC$481K
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 |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 2,463,857 | $156M | 8.6% | 2026-Q2 |
| Hood River Capital Management LLC new | 2,295,924 | $145M | 8.0% | 2026-Q2 |
| Driehaus Capital Management LLC new | 1,388,899 | $88M | 4.8% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 1,311,050 | $83M | 4.6% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 1,284,658 | $81M | 4.5% | 2026-Q2 |
| STATE STREET CORP added | 940,836 | $60M | 3.3% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 938,163 | $59M | 3.3% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 911,893 | $58M | 3.2% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 824,923 | $52M | 2.9% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 794,130 | $50M | 2.8% | 2026-Q2 |
| CYPRESS POINT INVESTMENT MANAGEMENT LP trimmed | 775,581 | $49M | 2.7% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 767,501 | $49M | 2.7% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 720,419 | $46M | 2.5% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 659,516 | $42M | 2.3% | 2026-Q2 |
| Nuveen, LLC added | 648,622 | $41M | 2.3% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 644,000 | $41M | 2.2% | 2026-Q2 |
| FMR LLC added | 544,221 | $34M | 1.9% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 536,459 | $34M | 1.9% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. added | 486,523 | $31M | 1.7% | 2026-Q2 |
| Portolan Capital Management, LLC added | 412,701 | $26M | 1.4% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 382,961 | $24M | 1.3% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 381,122 | $24M | 1.3% | 2026-Q2 |
| G2 Investment Partners Management LLC new | 366,938 | $23M | 1.3% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 346,268 | $22M | 1.2% | 2026-Q2 |
| JENNISON ASSOCIATES LLC new | 315,246 | $20M | 1.1% | 2026-Q2 |
| Archon Capital Management LLC trimmed | 311,443 | $20M | 1.1% | 2026-Q2 |
| MORGAN STANLEY added | 286,837 | $18M | 1.0% | 2026-Q2 |
| Assenagon Asset Management S.A. trimmed | 263,607 | $17M | 0.9% | 2026-Q2 |
| NORTHERN TRUST CORP added | 251,345 | $16M | 0.9% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 249,357 | $16M | 0.9% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC added | 235,974 | $15M | 0.8% | 2026-Q2 |
| Dana Investment Advisors, Inc. trimmed | 230,948 | $15M | 0.8% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC added | 230,822 | $15M | 0.8% | 2026-Q2 |
| SEI INVESTMENTS CO added | 227,286 | $14M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 212,765 | $13M | 0.7% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ added | 192,680 | $12M | 0.7% | 2026-Q2 |
| MARSHALL WACE, LLP added | 192,082 | $12M | 0.7% | 2026-Q2 |
| Parcion Private Wealth LLC trimmed | 188,195 | $12M | 0.7% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 187,280 | $12M | 0.7% | 2026-Q2 |
| Jump Financial, LLC added | 177,011 | $11M | 0.6% | 2026-Q2 |
| UBS Group AG trimmed | 175,920 | $11M | 0.6% | 2026-Q2 |
| CITIGROUP INC added | 161,888 | $10M | 0.6% | 2026-Q2 |
| Empowered Funds, LLC added | 160,974 | $10M | 0.6% | 2026-Q2 |
| Trexquant Investment LP added | 158,800 | $10M | 0.6% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 152,636 | $10M | 0.5% | 2026-Q2 |
| Pier Capital, LLC new | 140,366 | $9M | 0.5% | 2026-Q2 |
| HERALD INVESTMENT MANAGEMENT Ltd trimmed | 124,000 | $8M | 0.4% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH new | 114,468 | $7M | 0.4% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 113,616 | $7M | 0.4% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 113,012 | $2M | 0.1% | 2026-Q2 |
| Bank of New York Mellon Corp added | 106,024 | $7M | 0.4% | 2026-Q2 |
| ROYCE & ASSOCIATES LP new | 105,524 | $7M | 0.4% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 101,780 | $6M | 0.4% | 2026-Q2 |
| Ma Investment Partnership, LP new | 100,000 | $6M | 0.3% | 2026-Q2 |
| Blue Trust, Inc. | 97,742 | $6M | 0.3% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 90,871 | $6M | 0.3% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC added | 89,069 | $6M | 0.3% | 2026-Q2 |
| Divisadero Street Capital Management, LP new | 86,065 | $5M | 0.3% | 2026-Q2 |
| ANTIPODES PARTNERS Ltd trimmed | 82,551 | $5M | 0.3% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 78,961 | $5M | 0.3% | 2026-Q2 |
| Quantinno Capital Management LP added | 77,659 | $5M | 0.3% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC new | 72,180 | $5M | 0.3% | 2026-Q2 |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC new | 72,000 | $5M | 0.3% | 2026-Q2 |
| ALGERT GLOBAL LLC trimmed | 70,982 | $4M | 0.2% | 2026-Q2 |
| CASTLEARK MANAGEMENT LLC new | 68,880 | $4M | 0.2% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 66,539 | $4M | 0.2% | 2026-Q2 |
| Decker Retirement Planning Inc. new | 65,193 | $4M | 0.2% | 2026-Q2 |
| Aquatic Capital Management LLC added | 64,660 | $4M | 0.2% | 2026-Q2 |
| MERCER GLOBAL ADVISORS INC /ADV added | 63,833 | $4M | 0.2% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC new | 60,478 | $4M | 0.2% | 2026-Q2 |
| Robeco Institutional Asset Management B.V. new | 58,041 | $4M | 0.2% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 52,606 | $3M | 0.2% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL added | 51,722 | $3M | 0.2% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 51,456 | $3M | 0.2% | 2026-Q2 |
| FORA Capital, LLC new | 50,493 | $3M | 0.2% | 2026-Q2 |
| Invesco Ltd. trimmed | 49,050 | $3M | 0.2% | 2026-Q2 |
| GLOBEFLEX CAPITAL L P trimmed | 45,268 | $3M | 0.2% | 2026-Q2 |
| SIMPLEX TRADING, LLC added | 44,860 | $3M | 0.2% | 2026-Q2 |
| Jefferies Financial Group Inc. new | 42,415 | $3M | 0.1% | 2026-Q2 |
| Informed Momentum Co LLC new | 41,644 | $3M | 0.1% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 41,625 | $3M | 0.1% | 2026-Q2 |
| Sone Capital Management, LLC new | 40,104 | $3M | 0.1% | 2026-Q2 |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. new | 40,033 | $3M | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 39,768 | $3M | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 38,562 | $2M | 0.1% | 2026-Q2 |
| IEQ CAPITAL, LLC added | 38,417 | $2M | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 37,901 | $2M | 0.1% | 2026-Q2 |
| Engineers Gate Manager LP added | 35,043 | $2M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 34,670 | $2M | 0.1% | 2026-Q2 |
| Quadrature Capital Ltd new | 33,538 | $2M | 0.1% | 2026-Q2 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 33,355 | $2M | 0.1% | 2026-Q2 |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P trimmed | 32,500 | $2M | 0.1% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 31,179 | $2M | 0.1% | 2026-Q2 |
| MBL Wealth, LLC | 29,113 | $2M | 0.1% | 2026-Q2 |
| EFG International AG new | 27,077 | $2M | 0.1% | 2026-Q2 |
| Quantedge Capital Pte Ltd new | 25,700 | $2M | 0.1% | 2026-Q2 |
| Tidal Investments LLC new | 22,916 | $1M | 0.1% | 2026-Q2 |
| Palogic Value Management, L.P. trimmed | 22,520 | $1M | 0.1% | 2026-Q2 |
| Susquehanna Portfolio Strategies, LLC trimmed | 20,567 | $1M | 0.1% | 2026-Q2 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC added | 18,757 | $1M | 0.1% | 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.