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Institutional Ownership · SEC Form 13F

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.

178
Institutional holders
109M
Shares held (tracked funds)
76.9%
Of shares outstanding

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).

FundSharesReported value% of valueQuarter
BlackRock, Inc. added11,936,552$20M6.8%2026-Q1
SYLEBRA CAPITAL LLC trimmed8,908,503$15M5.1%2026-Q1
VANGUARD PORTFOLIO MANAGEMENT LLC new7,138,214$12M4.1%2026-Q1
Boston Partners trimmed6,700,316$11M3.8%2026-Q1
BANK OF AMERICA CORP /DE/ trimmed6,042,563$10M3.5%2026-Q1
VANGUARD CAPITAL MANAGEMENT LLC new5,764,677$10M3.3%2026-Q1
ACADIAN ASSET MANAGEMENT LLC added4,819,874$8M2.8%2026-Q1
AQR CAPITAL MANAGEMENT LLC added4,626,382$8M2.6%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC trimmed3,299,998$5M1.9%2026-Q1
MARSHALL WACE, LLP added2,898,685$5M1.7%2026-Q1
STATE STREET CORP added2,741,231$5M1.6%2026-Q1
JPMORGAN CHASE & CO trimmed2,239,854$4M1.3%2026-Q1
Impax Asset Management Group plc2,000,000$3M1.1%2026-Q1
Invenomic Capital Management LP trimmed1,921,175$3M1.1%2026-Q1
Hillsdale Investment Management Inc. added1,653,197$3M0.9%2026-Q1
FMR LLC added1,648,434$3M0.9%2026-Q1
D. E. Shaw & Co., Inc. added1,606,543$3M0.9%2026-Q1
MORGAN STANLEY added1,580,830$3M0.9%2026-Q1
ArrowMark Colorado Holdings LLC trimmed1,553,405$3M0.9%2026-Q1
DIMENSIONAL FUND ADVISORS LP added1,503,539$2M0.9%2026-Q1
Russell Investments Group, Ltd. trimmed1,462,062$2M0.8%2026-Q1
CHARLES SCHWAB INVESTMENT MANAGEMENT INC added1,421,151$2M0.8%2026-Q1
TWO SIGMA INVESTMENTS, LP added1,383,839$2M0.8%2026-Q1
SEGALL BRYANT & HAMILL, LLC trimmed1,315,255$2M0.8%2026-Q1
GOLDMAN SACHS GROUP INC added1,272,671$2M0.7%2026-Q1
NORTHERN TRUST CORP added1,209,822$2M0.7%2026-Q1
EverSource Wealth Advisors, LLC trimmed2,610$2M0.6%2026-Q1
PANAGORA ASSET MANAGEMENT INC added1,029,142$2M0.6%2026-Q1
Crestline Management, L.P. added990,850$2M0.6%2026-Q1
S SQUARED TECHNOLOGY, LLC934,236$2M0.5%2026-Q1
VANGUARD FIDUCIARY TRUST CO new909,084$2M0.5%2026-Q1
VOYA INVESTMENT MANAGEMENT LLC trimmed781,303$1M0.4%2026-Q1
DEUTSCHE BANK AG\ trimmed714,237$1M0.4%2026-Q1
Bank of New York Mellon Corp trimmed596,853$991K0.3%2026-Q1
JACOBS LEVY EQUITY MANAGEMENT, INC added572,931$951K0.3%2026-Q1
Connor, Clark & Lunn Investment Management Ltd. trimmed525,044$872K0.3%2026-Q1
COOPER CREEK PARTNERS MANAGEMENT LLC515,606$856K0.3%2026-Q1
FEDERATED HERMES, INC. added510,567$848K0.3%2026-Q1
NANO CAP NEW MILLENNIUM GROWTH FUND L P added500,000$830K0.3%2026-Q1
RENAISSANCE TECHNOLOGIES LLC added462,495$768K0.3%2026-Q1
BRIDGEWAY CAPITAL MANAGEMENT, LLC added425,225$706K0.2%2026-Q1
TUDOR INVESTMENT CORP ET AL added418,664$695K0.2%2026-Q1
BNP PARIBAS FINANCIAL MARKETS added415,569$690K0.2%2026-Q1
GSA CAPITAL PARTNERS LLP trimmed406,983$676K0.2%2026-Q1
Mayflower Financial Advisors, LLC added389,659$647K0.2%2026-Q1
FRANKLIN RESOURCES INC added383,184$636K0.2%2026-Q1
IEQ CAPITAL, LLC added353,799$587K0.2%2026-Q1
Vanguard Global Advisers, LLC new352,063$584K0.2%2026-Q1
Invesco Ltd. added350,038$581K0.2%2026-Q1
PRUDENTIAL FINANCIAL INC added299,048$496K0.2%2026-Q1
UBS Group AG added294,552$489K0.2%2026-Q1
AMERICAN CENTURY COMPANIES INC trimmed275,371$457K0.2%2026-Q1
GLOBEFLEX CAPITAL L P260,764$433K0.1%2026-Q1
Squarepoint Ops LLC added258,401$429K0.1%2026-Q1
Nuveen, LLC added255,156$424K0.1%2026-Q1
XTX Topco Ltd trimmed253,847$421K0.1%2026-Q1
Dynamic Technology Lab Private Ltd added250,426$416K0.1%2026-Q1
ALLIANCEBERNSTEIN L.P.180,950$356K0.1%2026-Q1
BARCLAYS PLC trimmed200,752$333K0.1%2026-Q1
Centiva Capital, LP added187,968$312K0.1%2026-Q1
PRICE T ROWE ASSOCIATES INC /MD/ added166,075$276K0.1%2026-Q1
RHUMBLINE ADVISERS trimmed162,512$270K0.1%2026-Q1
CWM, LLC added157,861$262K0.1%2026-Q1
MILLENNIUM MANAGEMENT LLC added154,828$257K0.1%2026-Q1
FULLER & THALER ASSET MANAGEMENT, INC. trimmed141,680$235K0.1%2026-Q1
Mariner, LLC added129,940$216K0.1%2026-Q1
AMERIPRISE FINANCIAL INC trimmed126,013$209K0.1%2026-Q1
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed125,146$208K0.1%2026-Q1
CANADA PENSION PLAN INVESTMENT BOARD added124,800$207K0.1%2026-Q1
HSBC HOLDINGS PLC added127,391$207K0.1%2026-Q1
Integrated Quantitative Investments LLC trimmed123,231$205K0.1%2026-Q1
ALGERT GLOBAL LLC added122,960$204K0.1%2026-Q1
Creative Planning added117,223$195K0.1%2026-Q1
SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC added110,874$184K0.1%2026-Q1
State of Tennessee, Department of Treasury added108,387$180K0.1%2026-Q1
LAZARD ASSET MANAGEMENT LLC added105,864$176K0.1%2026-Q1
Cerity Partners LLC added104,307$173K0.1%2026-Q1
Empowered Funds, LLC new103,325$172K0.1%2026-Q1
LPL Financial LLC trimmed98,623$164K0.1%2026-Q1
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC added106,684$162K0.1%2026-Q1
Graham Capital Management, L.P. trimmed96,030$159K0.1%2026-Q1
MACKENZIE FINANCIAL CORP trimmed87,392$145K0.1%2026-Q1
SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed76,464$127K0.0%2026-Q1
WELLS FARGO & COMPANY/MN trimmed72,584$120K0.0%2026-Q1
Headlands Technologies LLC added72,377$120K0.0%2026-Q1
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO added1,093,189$80M27.6%2025-Q4 stale
VANGUARD GROUP INC trimmed12,845,639$25M8.7%2025-Q4 stale
BRC Group Holdings, Inc. trimmed833,522$2M0.6%2025-Q1 stale
TWO SIGMA ADVISERS, LP trimmed599,758$1M0.4%2025-Q4 stale
JANE STREET GROUP, LLC added332,248$655K0.2%2025-Q4 stale
LOS ANGELES CAPITAL MANAGEMENT LLC trimmed132,358$242K0.1%2025-Q4 stale
WINTON GROUP Ltd added118,257$232K0.1%2025-Q2 stale
Wealthspire Advisors, LLC108,183$229K0.1%2025-Q3 stale
Man Group plc added113,726$224K0.1%2025-Q4 stale
BAILARD, INC. trimmed91,865$181K0.1%2025-Q4 stale
Quadrature Capital Ltd added86,973$171K0.1%2025-Q4 stale
Verition Fund Management LLC added83,676$165K0.1%2025-Q4 stale
SUMMIT PARTNERS L P added69,842$140K0.0%2025-Q1 stale
Corebridge Financial, Inc. added63,946$128K0.0%2025-Q1 stale
BOOTHBAY FUND MANAGEMENT, LLC trimmed61,870$121K0.0%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.

HoldersTotal shares

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.

Learn how to read institutional ownership