Who owns GTLB (GTLB)
Which tracked institutional funds hold GTLB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See GTLB 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
73 tracked funds added or opened GTLB while 196 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
GTLB’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 0.1% of theirs — a 0.1pp gap the other way — the median holder sizes GTLB more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in GTLB 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 368 tracked filers holding GTLB, 240 increased or opened the position and 219 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 GTLB 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 36
- VANGUARD PORTFOLIO MANAGEMENT LLC$188M
- VANGUARD CAPITAL MANAGEMENT LLC$132M
- Impactive Capital LP$85M
- MASSACHUSETTS FINANCIAL SERVICES CO /MA/$23M
- DISCIPLINED GROWTH INVESTORS INC /MN$20M
- VANGUARD FIDUCIARY TRUST CO$19M
Full exits 62
- VANGUARD GROUP INC$558M
- EMINENCE CAPITAL, LP$289M
- Slate Path Capital LP$224M
- Atreides Management, LP$119M
- BAMCO INC /NY/$54M
- Alyeska Investment Group, L.P.$51M
Largest adds
- NORGES BANK$141M
- PRIMECAP MANAGEMENT CO/CA/$114M
- MARSHALL WACE, LLP$69M
- SG Americas Securities, LLC$66M
- TWO SIGMA INVESTMENTS, LP$65M
- FEDERATED HERMES, INC.$53M
Largest trims
- PRICE T ROWE ASSOCIATES INC /MD/$153M
- BlackRock, Inc.$129M
- HMI Capital Management, L.P.$104M
- Champlain Investment Partners, LLC$71M
- FRANKLIN RESOURCES INC$63M
- Pictet Asset Management Holding SA$62M
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 |
|---|---|---|---|---|
| NORGES BANK added | 4,723,771 | $222M | 4.3% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 8,679,901 | $188M | 3.6% | 2026-Q1 |
| BlackRock, Inc. added | 8,637,060 | $187M | 3.6% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 8,654,425 | $183M | 3.5% | 2026-Q1 |
| PRIMECAP MANAGEMENT CO/CA/ added | 7,299,050 | $158M | 3.0% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 6,084,853 | $132M | 2.5% | 2026-Q1 |
| Impactive Capital LP new | 3,914,996 | $85M | 1.6% | 2026-Q1 |
| MARSHALL WACE, LLP added | 3,830,243 | $83M | 1.6% | 2026-Q1 |
| Champlain Investment Partners, LLC trimmed | 3,810,238 | $82M | 1.6% | 2026-Q1 |
| Squarepoint Ops LLC added | 3,682,760 | $80M | 1.5% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 3,265,975 | $71M | 1.4% | 2026-Q1 |
| SG Americas Securities, LLC added | 3,135,394 | $68M | 1.3% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 2,852,532 | $62M | 1.2% | 2026-Q1 |
| Alphabet Inc. | 2,724,712 | $59M | 1.1% | 2026-Q1 |
| FRANKLIN RESOURCES INC trimmed | 2,675,389 | $58M | 1.1% | 2026-Q1 |
| HMI Capital Management, L.P. trimmed | 2,651,677 | $57M | 1.1% | 2026-Q1 |
| STATE STREET CORP added | 2,550,366 | $55M | 1.1% | 2026-Q1 |
| FEDERATED HERMES, INC. added | 2,481,164 | $54M | 1.0% | 2026-Q1 |
| INFINITUM ASSET MANAGEMENT, LLC added | 2,250,000 | $49M | 0.9% | 2026-Q1 |
| EDMOND DE ROTHSCHILD HOLDING S.A. added | 2,082,623 | $45M | 0.9% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 2,067,377 | $45M | 0.9% | 2026-Q1 |
| MORGAN STANLEY added | 1,989,733 | $43M | 0.8% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 1,955,648 | $42M | 0.8% | 2026-Q1 |
| Technology Crossover Management X, Ltd. | 1,922,114 | $42M | 0.8% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 1,893,926 | $41M | 0.8% | 2026-Q1 |
| Fiera Capital Corp added | 1,750,944 | $38M | 0.7% | 2026-Q1 |
| FIL Ltd added | 1,672,294 | $36M | 0.7% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC added | 1,648,065 | $36M | 0.7% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 1,470,429 | $32M | 0.6% | 2026-Q1 |
| UBS Group AG trimmed | 1,378,270 | $30M | 0.6% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. added | 1,341,010 | $29M | 0.6% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 1,315,377 | $28M | 0.5% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 1,186,555 | $26M | 0.5% | 2026-Q1 |
| LIGHT STREET CAPITAL MANAGEMENT, LLC added | 1,170,000 | $25M | 0.5% | 2026-Q1 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ new | 1,062,318 | $23M | 0.4% | 2026-Q1 |
| ARMISTICE CAPITAL, LLC added | 1,028,664 | $22M | 0.4% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 990,420 | $21M | 0.4% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 964,695 | $20M | 0.4% | 2026-Q1 |
| General Catalyst Group Management, LLC | 921,405 | $20M | 0.4% | 2026-Q1 |
| DISCIPLINED GROWTH INVESTORS INC /MN new | 909,547 | $20M | 0.4% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 895,355 | $19M | 0.4% | 2026-Q1 |
| Pacer Advisors, Inc. added | 855,022 | $19M | 0.4% | 2026-Q1 |
| Capital World Investors | 849,257 | $18M | 0.4% | 2026-Q1 |
| ARK Investment Management LLC trimmed | 826,885 | $18M | 0.3% | 2026-Q1 |
| CANADA PENSION PLAN INVESTMENT BOARD added | 766,300 | $17M | 0.3% | 2026-Q1 |
| Ancient Art, L.P. new | 750,000 | $16M | 0.3% | 2026-Q1 |
| NORTHERN TRUST CORP added | 745,455 | $16M | 0.3% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 742,800 | $16M | 0.3% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 643,882 | $14M | 0.3% | 2026-Q1 |
| IEQ CAPITAL, LLC added | 616,034 | $13M | 0.3% | 2026-Q1 |
| TFJ Management, LLC added | 606,720 | $13M | 0.3% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 587,740 | $13M | 0.2% | 2026-Q1 |
| Barton Investment Management trimmed | 554,943 | $12M | 0.2% | 2026-Q1 |
| Man Group plc added | 549,597 | $12M | 0.2% | 2026-Q1 |
| Sumitomo Mitsui Trust Group, Inc. added | 535,833 | $12M | 0.2% | 2026-Q1 |
| Amova Asset Management Americas, Inc. added | 535,833 | $12M | 0.2% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 491,224 | $11M | 0.2% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 479,027 | $10M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 428,928 | $9M | 0.2% | 2026-Q1 |
| Deltroit Asset Management (UK) LLP added | 414,500 | $9M | 0.2% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 14,866,968 | $558M | 10.7% | 2025-Q4 stale |
| EMINENCE CAPITAL, LP added | 7,702,226 | $289M | 5.5% | 2025-Q4 stale |
| Slate Path Capital LP added | 5,973,800 | $224M | 4.3% | 2025-Q4 stale |
| Atreides Management, LP trimmed | 3,177,083 | $119M | 2.3% | 2025-Q4 stale |
| 1832 Asset Management L.P. added | 2,295,000 | $108M | 2.1% | 2025-Q1 stale |
| Capital Research Global Investors trimmed | 2,050,027 | $96M | 1.8% | 2025-Q1 stale |
| JUPITER ASSET MANAGEMENT LTD new | 1,336,012 | $60M | 1.2% | 2025-Q2 stale |
| BAMCO INC /NY/ trimmed | 1,426,527 | $54M | 1.0% | 2025-Q4 stale |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 1,140,540 | $51M | 1.0% | 2025-Q2 stale |
| Alyeska Investment Group, L.P. trimmed | 1,348,638 | $51M | 1.0% | 2025-Q4 stale |
| Carmignac Gestion added | 1,310,000 | $49M | 0.9% | 2025-Q4 stale |
| ICONIQ Capital, LLC trimmed | 1,159,908 | $44M | 0.8% | 2025-Q4 stale |
| Driehaus Capital Management LLC added | 850,548 | $40M | 0.8% | 2025-Q1 stale |
| NORDEA INVESTMENT MANAGEMENT AB trimmed | 993,011 | $38M | 0.7% | 2025-Q4 stale |
| Think Investments LP | 988,200 | $37M | 0.7% | 2025-Q4 stale |
| AMERICAN CENTURY COMPANIES INC added | 962,118 | $36M | 0.7% | 2025-Q4 stale |
| Bienville Capital Management, LLC added | 945,332 | $35M | 0.7% | 2025-Q4 stale |
| Stephens Investment Management Group LLC trimmed | 709,525 | $32M | 0.6% | 2025-Q2 stale |
| Artisan Partners Limited Partnership trimmed | 679,549 | $31M | 0.6% | 2025-Q2 stale |
| LORD, ABBETT & CO. LLC added | 638,793 | $30M | 0.6% | 2025-Q1 stale |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 654,866 | $30M | 0.6% | 2025-Q3 stale |
| Value Aligned Research Advisors, LLC added | 729,152 | $27M | 0.5% | 2025-Q4 stale |
| Coronation Fund Managers Ltd. added | 717,483 | $27M | 0.5% | 2025-Q4 stale |
| Manchester Global Management (UK) Ltd added | 582,000 | $26M | 0.5% | 2025-Q2 stale |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC added | 580,752 | $26M | 0.5% | 2025-Q2 stale |
| Bridgewater Associates, LP added | 644,268 | $24M | 0.5% | 2025-Q4 stale |
| Marcho Partners LLP trimmed | 489,545 | $22M | 0.4% | 2025-Q3 stale |
| TRAN CAPITAL MANAGEMENT, L.P. added | 406,252 | $18M | 0.4% | 2025-Q2 stale |
| Cinctive Capital Management LP added | 381,317 | $18M | 0.3% | 2025-Q1 stale |
| GLYNN CAPITAL MANAGEMENT LLC added | 345,833 | $16M | 0.3% | 2025-Q1 stale |
| CRAMER ROSENTHAL MCGLYNN LLC new | 344,657 | $16M | 0.3% | 2025-Q3 stale |
| Allianz Asset Management GmbH added | 338,249 | $15M | 0.3% | 2025-Q2 stale |
| WCM INVESTMENT MANAGEMENT, LLC new | 333,771 | $15M | 0.3% | 2025-Q2 stale |
| OFI INVEST ASSET MANAGEMENT new | 375,436 | $14M | 0.3% | 2025-Q2 stale |
| DekaBank Deutsche Girozentrale | 220,227 | $13M | 0.2% | 2025-Q4 stale |
| AXA S.A. added | 267,099 | $12M | 0.2% | 2025-Q2 stale |
| Metavasi Capital LP added | 247,500 | $11M | 0.2% | 2025-Q3 stale |
| Swedbank AB trimmed | 222,700 | $10M | 0.2% | 2025-Q3 stale |
| Schonfeld Strategic Advisors LLC trimmed | 209,904 | $10M | 0.2% | 2025-Q1 stale |
| Ravenswood Partners LP new | 208,176 | $9M | 0.2% | 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.
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.