Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
395 institutional managers reported holding GTX for the quarter ended Mar 31, 2026. Together they hold about 93% of shares outstanding; the top 10 hold 41%. 72 opened new positions; 52 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Oaktree Capital (focused) | 14.59M | 7.55% | $265.2M | trimmed -14.6% | 2021 Q2 |
| BlackRock | 13.03M | 6.74% | $236.8M | added +5.3% | 2021 Q2 |
| Fuller & Thaler Asset Management, INC. | 10.90M | 5.64% | $198.0M | added +5.3% | 2025 Q4 |
| FMR (Fidelity) | 8.25M | 4.27% | $150.0M | added +29.4% | 2021 Q2 |
| LSV Asset Management | 7.26M | 3.75% | $131.8M | added +16.4% | 2025 Q3 |
| Gates Capital Management, INC. (focused) | 5.94M | 3.07% | $107.9M | added +8.4% | 2024 Q4 |
| William Blair Investment Management, LLC | 5.76M | 2.98% | $104.7M | trimmed -4.9% | 2023 Q4 |
| Vanguard Group | 4.93M | 2.55% | $89.6M | added +11.5% | 2021 Q2 |
| Geode Capital | 4.44M | 2.30% | $80.6M | added +14.3% | 2021 Q2 |
| State Street | 4.17M | 2.16% | $75.7M | added +11.3% | 2021 Q2 |
| Arrowstreet Capital | 3.82M | 1.98% | $69.4M | trimmed -25.6% | 2025 Q2 |
| Dimensional Fund Advisors | 3.50M | 1.81% | $63.7M | added +7.3% | 2021 Q3 |
| Marshall Wace | 3.46M | 1.79% | $62.9M | trimmed -22.6% | 2024 Q4 |
| NEW South Capital Management INC | 3.30M | 1.71% | $60.0M | trimmed -11% | 2021 Q2 |
| Invesco | 3.17M | 1.64% | $57.6M | added +543.3% | 2022 Q1 |
| Frontier Capital Management CO LLC | 2.68M | 1.39% | $48.6M | added +17.2% | 2024 Q4 |
| Apis Capital Advisors, LLC | 2.67M | 1.38% | $48.4M | added +19.5% | 2021 Q2 |
| Nuveen | 2.64M | 1.36% | $47.9M | added +1.4% | 2025 Q2 |
| Morgan Stanley | 2.55M | 1.32% | $46.4M | added +6% | 2021 Q2 |
| D. E. Shaw | 2.44M | 1.26% | $44.3M | added +81.4% | 2023 Q3 |
| Prevatt Capital LTD (focused) | 2.25M | 1.17% | $40.9M | trimmed -15.1% | 2023 Q4 |
| Cyrus Capital Partners, L.p. (focused) | 2.16M | 1.12% | $39.2M | trimmed -68.5% | 2021 Q2 |
| Schroder Investment Management Group | 2.11M | 1.09% | $38.4M | added +781.1% | 2025 Q4 |
| Gamco Investors, INC. et al | 1.95M | 1.01% | $35.5M | trimmed -4.5% | 2021 Q2 |
| Qube Research & Technologies LTD | 1.74M | 0.90% | $31.5M | added +16.5% | 2025 Q2 |
| Victory Capital Management INC | 1.53M | 0.79% | $27.7M | trimmed -11.6% | 2023 Q4 |
| Loomis Sayles & CO L P | 1.46M | 0.76% | $26.6M | added +5.9% | 2024 Q1 |
| Northern Trust | 1.45M | 0.75% | $26.3M | added +13.9% | 2021 Q2 |
| Gw&k Investment Management, LLC | 1.43M | 0.74% | $25.9M | trimmed -18.8% | 2021 Q3 |
| Charles Schwab Investment Management | 1.38M | 0.71% | $25.1M | unchanged | 2021 Q3 |
| Allspring Global Investments Holdings, LLC | 1.34M | 0.69% | $24.3M | added +15.1% | 2025 Q4 |
| UBS | 1.33M | 0.69% | $24.1M | trimmed -7.6% | 2021 Q2 |
| Jane Street | 1.25M | 0.65% | $22.6M | opened | 2022 Q3 |
| Driehaus Capital Management LLC | 1.23M | 0.63% | $22.3M | opened | 2026 Q1 |
| DZ Bank AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 1.19M | 0.62% | $21.6M | trimmed -22.1% | 2025 Q3 |
| Citadel Advisors | 1.19M | 0.61% | $21.6M | added +30.9% | 2022 Q4 |
| Eubel Brady & Suttman Asset Management INC | 1.15M | 0.59% | $20.8M | trimmed -58.7% | 2024 Q4 |
| AQR Capital | 1.03M | 0.53% | $18.7M | added +32.5% | 2023 Q2 |
| Gem Investment Advisors, LLC (focused) | 1.02M | 0.53% | $18.5M | trimmed -1.7% | 2025 Q4 |
| Bank OF America CORP /DE/ | 1.01M | 0.53% | $18.4M | trimmed -17.7% | 2021 Q2 |
| GAMCO (Gabelli) | 897.3k | 0.46% | $16.3M | trimmed -12.3% | 2021 Q2 |
| Jupiter Asset Management LTD | 858.6k | 0.44% | $15.6M | trimmed -22.7% | 2025 Q3 |
| Goldman Sachs | 841.3k | 0.43% | $15.3M | added +31.8% | 2021 Q2 |
| HRT Financial LP | 838.5k | 0.43% | $15.2M | added +188.4% | 2024 Q1 |
| Robeco Institutional Asset Management B.v. | 818.9k | 0.42% | $14.9M | added +4.4% | 2025 Q3 |
| Lonestar Capital Management LLC (focused) | 800.0k | 0.41% | $14.5M | trimmed -11.1% | 2023 Q2 |
| First Trust Advisors LP | 791.4k | 0.41% | $14.4M | added +31.1% | 2023 Q4 |
| Squarepoint Ops LLC | 776.6k | 0.40% | $14.1M | added +37.7% | 2024 Q2 |
| Millennium Management | 765.2k | 0.40% | $13.9M | trimmed -35.4% | 2022 Q2 |
| SEI Investments CO | 765.0k | 0.40% | $13.9M | added +22.9% | 2025 Q2 |
Largest 50 of 395 shown; the full ranked, searchable register is at boothcheck.com/holders/GTX. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.