Who owns 8x8, Inc. (EGHT)
Which tracked institutional funds hold EGHT, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See EGHT company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-22). 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
15 tracked funds added or opened EGHT while 26 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
EGHT’s largest tracked holder by dollar value, NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO, 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 EGHT 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 178 tracked filers holding EGHT, 114 increased or opened the position and 64 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 EGHT 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 4
- VANGUARD PORTFOLIO MANAGEMENT LLC$12M
- VANGUARD CAPITAL MANAGEMENT LLC$10M
- VANGUARD FIDUCIARY TRUST CO$2M
- Vanguard Global Advisers, LLC$584K
Full exits 4
- NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO$80M
- VANGUARD GROUP INC$25M
- TWO SIGMA ADVISERS, LP$1M
- JANE STREET GROUP, LLC$655K
Largest adds
- MARSHALL WACE, LLP$4M
- EverSource Wealth Advisors, LLC$2M
- TWO SIGMA INVESTMENTS, LP$1M
- D. E. Shaw & Co., Inc.$1M
- ACADIAN ASSET MANAGEMENT LLC$1M
- AQR CAPITAL MANAGEMENT LLC$965K
Largest trims
- SYLEBRA CAPITAL LLC$8M
- BANK OF AMERICA CORP /DE/$3M
- Boston Partners$3M
- Invenomic Capital Management LP$3M
- BlackRock, Inc.$2M
- ArrowMark Colorado Holdings LLC$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 | 11,936,552 | $20M | 6.8% | 2026-Q1 |
| SYLEBRA CAPITAL LLC trimmed | 8,908,503 | $15M | 5.1% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 7,138,214 | $12M | 4.1% | 2026-Q1 |
| Boston Partners trimmed | 6,700,316 | $11M | 3.8% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 6,042,563 | $10M | 3.5% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 5,764,677 | $10M | 3.3% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC added | 4,819,874 | $8M | 2.8% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 4,626,382 | $8M | 2.6% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 3,299,998 | $5M | 1.9% | 2026-Q1 |
| MARSHALL WACE, LLP added | 2,898,685 | $5M | 1.7% | 2026-Q1 |
| STATE STREET CORP added | 2,741,231 | $5M | 1.6% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 2,239,854 | $4M | 1.3% | 2026-Q1 |
| Impax Asset Management Group plc | 2,000,000 | $3M | 1.1% | 2026-Q1 |
| Invenomic Capital Management LP trimmed | 1,921,175 | $3M | 1.1% | 2026-Q1 |
| Hillsdale Investment Management Inc. added | 1,653,197 | $3M | 0.9% | 2026-Q1 |
| FMR LLC added | 1,648,434 | $3M | 0.9% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 1,606,543 | $3M | 0.9% | 2026-Q1 |
| MORGAN STANLEY added | 1,580,830 | $3M | 0.9% | 2026-Q1 |
| ArrowMark Colorado Holdings LLC trimmed | 1,553,405 | $3M | 0.9% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 1,503,539 | $2M | 0.9% | 2026-Q1 |
| Russell Investments Group, Ltd. trimmed | 1,462,062 | $2M | 0.8% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 1,421,151 | $2M | 0.8% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 1,383,839 | $2M | 0.8% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 1,315,255 | $2M | 0.8% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 1,272,671 | $2M | 0.7% | 2026-Q1 |
| NORTHERN TRUST CORP added | 1,209,822 | $2M | 0.7% | 2026-Q1 |
| EverSource Wealth Advisors, LLC trimmed | 2,610 | $2M | 0.6% | 2026-Q1 |
| PANAGORA ASSET MANAGEMENT INC added | 1,029,142 | $2M | 0.6% | 2026-Q1 |
| Crestline Management, L.P. added | 990,850 | $2M | 0.6% | 2026-Q1 |
| S SQUARED TECHNOLOGY, LLC | 934,236 | $2M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 909,084 | $2M | 0.5% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC trimmed | 781,303 | $1M | 0.4% | 2026-Q1 |
| DEUTSCHE BANK AG\ trimmed | 714,237 | $1M | 0.4% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 596,853 | $991K | 0.3% | 2026-Q1 |
| JACOBS LEVY EQUITY MANAGEMENT, INC added | 572,931 | $951K | 0.3% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 525,044 | $872K | 0.3% | 2026-Q1 |
| COOPER CREEK PARTNERS MANAGEMENT LLC | 515,606 | $856K | 0.3% | 2026-Q1 |
| FEDERATED HERMES, INC. added | 510,567 | $848K | 0.3% | 2026-Q1 |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P added | 500,000 | $830K | 0.3% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 462,495 | $768K | 0.3% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC added | 425,225 | $706K | 0.2% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 418,664 | $695K | 0.2% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 415,569 | $690K | 0.2% | 2026-Q1 |
| GSA CAPITAL PARTNERS LLP trimmed | 406,983 | $676K | 0.2% | 2026-Q1 |
| Mayflower Financial Advisors, LLC added | 389,659 | $647K | 0.2% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 383,184 | $636K | 0.2% | 2026-Q1 |
| IEQ CAPITAL, LLC added | 353,799 | $587K | 0.2% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 352,063 | $584K | 0.2% | 2026-Q1 |
| Invesco Ltd. added | 350,038 | $581K | 0.2% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC added | 299,048 | $496K | 0.2% | 2026-Q1 |
| UBS Group AG added | 294,552 | $489K | 0.2% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC trimmed | 275,371 | $457K | 0.2% | 2026-Q1 |
| GLOBEFLEX CAPITAL L P | 260,764 | $433K | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC added | 258,401 | $429K | 0.1% | 2026-Q1 |
| Nuveen, LLC added | 255,156 | $424K | 0.1% | 2026-Q1 |
| XTX Topco Ltd trimmed | 253,847 | $421K | 0.1% | 2026-Q1 |
| Dynamic Technology Lab Private Ltd added | 250,426 | $416K | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. | 180,950 | $356K | 0.1% | 2026-Q1 |
| BARCLAYS PLC trimmed | 200,752 | $333K | 0.1% | 2026-Q1 |
| Centiva Capital, LP added | 187,968 | $312K | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 166,075 | $276K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 162,512 | $270K | 0.1% | 2026-Q1 |
| CWM, LLC added | 157,861 | $262K | 0.1% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 154,828 | $257K | 0.1% | 2026-Q1 |
| FULLER & THALER ASSET MANAGEMENT, INC. trimmed | 141,680 | $235K | 0.1% | 2026-Q1 |
| Mariner, LLC added | 129,940 | $216K | 0.1% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 126,013 | $209K | 0.1% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 125,146 | $208K | 0.1% | 2026-Q1 |
| CANADA PENSION PLAN INVESTMENT BOARD added | 124,800 | $207K | 0.1% | 2026-Q1 |
| HSBC HOLDINGS PLC added | 127,391 | $207K | 0.1% | 2026-Q1 |
| Integrated Quantitative Investments LLC trimmed | 123,231 | $205K | 0.1% | 2026-Q1 |
| ALGERT GLOBAL LLC added | 122,960 | $204K | 0.1% | 2026-Q1 |
| Creative Planning added | 117,223 | $195K | 0.1% | 2026-Q1 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC added | 110,874 | $184K | 0.1% | 2026-Q1 |
| State of Tennessee, Department of Treasury added | 108,387 | $180K | 0.1% | 2026-Q1 |
| LAZARD ASSET MANAGEMENT LLC added | 105,864 | $176K | 0.1% | 2026-Q1 |
| Cerity Partners LLC added | 104,307 | $173K | 0.1% | 2026-Q1 |
| Empowered Funds, LLC new | 103,325 | $172K | 0.1% | 2026-Q1 |
| LPL Financial LLC trimmed | 98,623 | $164K | 0.1% | 2026-Q1 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC added | 106,684 | $162K | 0.1% | 2026-Q1 |
| Graham Capital Management, L.P. trimmed | 96,030 | $159K | 0.1% | 2026-Q1 |
| MACKENZIE FINANCIAL CORP trimmed | 87,392 | $145K | 0.1% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 76,464 | $127K | 0.0% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 72,584 | $120K | 0.0% | 2026-Q1 |
| Headlands Technologies LLC added | 72,377 | $120K | 0.0% | 2026-Q1 |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO added | 1,093,189 | $80M | 27.6% | 2025-Q4 stale |
| VANGUARD GROUP INC trimmed | 12,845,639 | $25M | 8.7% | 2025-Q4 stale |
| BRC Group Holdings, Inc. trimmed | 833,522 | $2M | 0.6% | 2025-Q1 stale |
| TWO SIGMA ADVISERS, LP trimmed | 599,758 | $1M | 0.4% | 2025-Q4 stale |
| JANE STREET GROUP, LLC added | 332,248 | $655K | 0.2% | 2025-Q4 stale |
| LOS ANGELES CAPITAL MANAGEMENT LLC trimmed | 132,358 | $242K | 0.1% | 2025-Q4 stale |
| WINTON GROUP Ltd added | 118,257 | $232K | 0.1% | 2025-Q2 stale |
| Wealthspire Advisors, LLC | 108,183 | $229K | 0.1% | 2025-Q3 stale |
| Man Group plc added | 113,726 | $224K | 0.1% | 2025-Q4 stale |
| BAILARD, INC. trimmed | 91,865 | $181K | 0.1% | 2025-Q4 stale |
| Quadrature Capital Ltd added | 86,973 | $171K | 0.1% | 2025-Q4 stale |
| Verition Fund Management LLC added | 83,676 | $165K | 0.1% | 2025-Q4 stale |
| SUMMIT PARTNERS L P added | 69,842 | $140K | 0.0% | 2025-Q1 stale |
| Corebridge Financial, Inc. added | 63,946 | $128K | 0.0% | 2025-Q1 stale |
| BOOTHBAY FUND MANAGEMENT, LLC trimmed | 61,870 | $121K | 0.0% | 2025-Q2 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.