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Institutional Ownership · SEC Form 13F

Who owns GLIBA (GLIBA)


Which tracked institutional funds hold GLIBA, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See GLIBA 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.

392
Institutional holders
36,543,953
Shares held (tracked funds)

How the tape is positioned

63 tracked funds added or opened GLIBA while 37 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

GLIBA’s largest tracked holder by dollar value, VANGUARD GROUP 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 GLIBA more heavily than its largest holder by dollar value does.

Book-share is each fund’s reported value in GLIBA 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 273 tracked filers holding GLIBA, 134 increased or opened the position and 124 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.

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 GLIBA 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 21

  • VANGUARD PORTFOLIO MANAGEMENT LLC$62M
  • VANGUARD CAPITAL MANAGEMENT LLC$62M
  • Swiss Life Asset Management Ltd$42M
  • Laurel Wealth Advisors LLC$9M
  • VANGUARD FIDUCIARY TRUST CO$8M
  • Trexquant Investment LP$6M

Full exits 10

  • VANGUARD GROUP INC$119M
  • Greenstone Partners & Co., LLC$12M
  • WHITEBOX ADVISORS LLC$9M
  • JANE STREET GROUP, LLC$6M
  • Quaker Capital Investments, LLC$3M
  • Slotnik Capital, LLC$3M

Largest adds

  • Kontiki Capital Management (HK) Ltd.$47M
  • AMERICAN CENTURY COMPANIES INC$28M
  • UBS Group AG$23M
  • Qube Research & Technologies Ltd$16M
  • DIMENSIONAL FUND ADVISORS LP$16M
  • TWO SIGMA INVESTMENTS, LP$11M

Largest trims

  • BARCLAYS PLC$124M
  • NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO$57M
  • Ancora Advisors LLC$11M
  • HIGHBRIDGE CAPITAL MANAGEMENT LLC$7M
  • ACADIAN ASSET MANAGEMENT LLC$7M
  • LMR Partners LLP$6M

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
Kontiki Capital Management (HK) Ltd. added1,962,339$73M7.4%2026-Q1
DIMENSIONAL FUND ADVISORS LP added1,504,923$56M5.7%2026-Q1
VANGUARD CAPITAL MANAGEMENT LLC new1,477,239$55M5.6%2026-Q1
VANGUARD PORTFOLIO MANAGEMENT LLC new1,429,708$53M5.4%2026-Q1
SOUTHEASTERN ASSET MANAGEMENT INC/TN/1,321,110$49M5.0%2026-Q1
Swiss Life Asset Management Ltd new525,338$42M4.3%2026-Q1
Point72 Asset Management, L.P. added858,491$32M3.2%2026-Q1
BROOKFIELD Corp /ON/726,398$27M2.7%2026-Q1
BAMCO INC /NY/ added688,388$26M2.6%2026-Q1
Elliott Investment Management L.P.659,928$25M2.5%2026-Q1
TWO SIGMA INVESTMENTS, LP added624,359$23M2.3%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC added553,655$21M2.1%2026-Q1
Wallace Capital Management Inc. added518,999$19M2.0%2026-Q1
D. E. Shaw & Co., Inc. trimmed430,053$16M1.6%2026-Q1
MILLENNIUM MANAGEMENT LLC added315,627$12M1.2%2026-Q1
CHARLES SCHWAB INVESTMENT MANAGEMENT INC added309,840$12M1.2%2026-Q1
Ancora Advisors LLC added302,271$11M1.1%2026-Q1
Empyrean Capital Partners, LP added293,218$11M1.1%2026-Q1
Russell Investments Group, Ltd. trimmed291,091$11M1.1%2026-Q1
CITADEL ADVISORS LLC trimmed263,832$10M1.0%2026-Q1
T. Rowe Price Investment Management, Inc. added257,410$10M1.0%2026-Q1
Rothschild & Co Wealth Management UK Ltd trimmed253,536$9M1.0%2026-Q1
Holocene Advisors, LP trimmed250,000$9M0.9%2026-Q1
RENAISSANCE TECHNOLOGIES LLC added245,300$9M0.9%2026-Q1
Laurel Wealth Advisors LLC new343,750$9M0.9%2026-Q1
THOMPSON SIEGEL & WALMSLEY LLC trimmed242,334$9M0.9%2026-Q1
BlackRock, Inc. trimmed224,169$8M0.8%2026-Q1
BANK OF AMERICA CORP /DE/ added200,832$7M0.8%2026-Q1
MORGAN STANLEY added181,655$7M0.7%2026-Q1
NORTHERN TRUST CORP added173,443$6M0.7%2026-Q1
MARSHALL WACE, LLP added167,396$6M0.6%2026-Q1
Ranger Investment Management, L.P. trimmed162,341$6M0.6%2026-Q1
Crossingbridge Advisors, LLC trimmed160,000$6M0.6%2026-Q1
JPMORGAN CHASE & CO added152,866$6M0.6%2026-Q1
HIGHBRIDGE CAPITAL MANAGEMENT LLC added152,866$6M0.6%2026-Q1
RAFFLES ASSOCIATES LP added146,222$5M0.5%2026-Q1
Hi-Line Capital Management, LLC added141,523$5M0.5%2026-Q1
BISLETT MANAGEMENT, LLC added138,033$5M0.5%2026-Q1
Invesco Ltd. added137,475$5M0.5%2026-Q1
Ruane, Cunniff & Goldfarb L.P. trimmed127,548$5M0.5%2026-Q1
KKM Financial LLC120,248$4M0.5%2026-Q1
OSAIC HOLDINGS, INC. added117,561$4M0.4%2026-Q1
Luxor Capital Group, LP117,435$4M0.4%2026-Q1
Quantinno Capital Management LP added113,411$4M0.4%2026-Q1
Man Group plc trimmed111,966$4M0.4%2026-Q1
AMERICAN CENTURY COMPANIES INC added108,879$4M0.4%2026-Q1
LMR Partners LLP trimmed106,739$4M0.4%2026-Q1
TUDOR INVESTMENT CORP ET AL trimmed97,740$4M0.4%2026-Q1
Walleye Capital LLC new81,212$3M0.3%2026-Q1
Amundi added75,727$3M0.3%2026-Q1
BALYASNY ASSET MANAGEMENT L.P. added73,272$3M0.3%2026-Q1
STATE OF WISCONSIN INVESTMENT BOARD added73,753$3M0.3%2026-Q1
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added71,988$3M0.3%2026-Q1
Universal- Beteiligungs- und Servicegesellschaft mbH added71,411$3M0.3%2026-Q1
Gotham Asset Management, LLC trimmed69,406$3M0.3%2026-Q1
Swiss National Bank added67,079$2M0.3%2026-Q1
STATE STREET CORP trimmed67,631$2M0.3%2026-Q1
GABELLI & Co INVESTMENT ADVISERS, INC.64,444$2M0.2%2026-Q1
VOLORIDGE INVESTMENT MANAGEMENT, LLC new62,407$2M0.2%2026-Q1
LAZARD ASSET MANAGEMENT LLC new59,074$2M0.2%2026-Q1
BARCLAYS PLC trimmed57,146$2M0.2%2026-Q1
Quantbot Technologies LP trimmed56,293$2M0.2%2026-Q1
NISA INVESTMENT ADVISORS, LLC added54,321$2M0.2%2026-Q1
Hara Capital LLC added53,092$2M0.2%2026-Q1
HRT FINANCIAL LP trimmed52,951$2M0.2%2026-Q1
Virtu Financial LLC added45,474$2M0.2%2026-Q1
Jump Financial, LLC trimmed44,497$2M0.2%2026-Q1
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added42,820$2M0.2%2026-Q1
Schonfeld Strategic Advisors LLC added38,106$1M0.1%2026-Q1
Diametric Capital, LP trimmed37,201$1M0.1%2026-Q1
PRICE T ROWE ASSOCIATES INC /MD/ added34,594$1M0.1%2026-Q1
Magnetar Financial LLC new33,694$1M0.1%2026-Q1
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added33,554$1M0.1%2026-Q1
Squarepoint Ops LLC added33,084$1M0.1%2026-Q1
CIBC Bancorp USA Inc. new33,000$1M0.1%2026-Q1
Long Focus Capital Management, LLC trimmed31,514$1M0.1%2026-Q1
Aquatic Capital Management LLC added27,677$1M0.1%2026-Q1
HSBC HOLDINGS PLC added27,577$1M0.1%2026-Q1
Legal & General Group Plc added26,846$999K0.1%2026-Q1
AXQ CAPITAL, LP added26,447$984K0.1%2026-Q1
WHITTIER TRUST CO added26,214$961K0.1%2026-Q1
Hudson Bay Capital Management LP added25,078$933K0.1%2026-Q1
Oak Thistle LLC added24,706$919K0.1%2026-Q1
RHUMBLINE ADVISERS added24,658$917K0.1%2026-Q1
VANGUARD ASSET MANAGEMENT, Ltd new23,989$893K0.1%2026-Q1
Alberta Investment Management Corp trimmed23,872$880K0.1%2026-Q1
LANDSCAPE CAPITAL MANAGEMENT, L.L.C. added23,104$860K0.1%2026-Q1
VANGUARD GROUP INC added2,818,279$105M10.6%2025-Q4 stale
Newtyn Management, LLC new365,526$14M1.4%2025-Q3 stale
HARRIS ASSOCIATES L P new354,597$13M1.3%2025-Q3 stale
Greenstone Partners & Co., LLC new315,282$12M1.2%2025-Q4 stale
JANE STREET GROUP, LLC trimmed166,884$6M0.6%2025-Q4 stale
Quaker Capital Investments, LLC added86,328$3M0.3%2025-Q4 stale
Slotnik Capital, LLC trimmed85,540$3M0.3%2025-Q4 stale
DigitalBridge Group, Inc. trimmed72,000$3M0.3%2025-Q4 stale
Versor Investments LP new71,289$3M0.3%2025-Q3 stale
ING GROEP NV new51,760$2M0.2%2025-Q3 stale
WHITEBOX ADVISORS LLC trimmed41,785$2M0.2%2025-Q4 stale
TWO SIGMA ADVISERS, LP trimmed32,675$1M0.1%2025-Q4 stale
WEITZ INVESTMENT MANAGEMENT, INC. new28,000$1M0.1%2025-Q3 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