GCTK GLUCOTRACK INC
GLUCOTRACK INC (GCTK) Institutional Ownership
What the institutions did with GCTK last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| HRT FINANCIAL LP | 205.4K | 34.9% |
| JANE STREET GROUP, LLC | 128.5K | 21.8% |
| CITADEL ADVISORS LLC | 79.5K | 13.5% |
| Ikarian Capital, LLC | 45.8K | 7.8% |
| GEODE CAPITAL MANAGEMENT, LLC | 34.2K | 5.8% |
| Virtu Financial LLC | 18.7K | 3.2% |
| GRANITE ISLANDS PRIVATE WEALTH, LLC | 15.7K | 2.7% |
| BOOTHBAY FUND MANAGEMENT, LLC | 13.5K | 2.3% |
| UBS Group AG | 13.3K | 2.3% |
| CITIGROUP INC | 12.9K | 2.2% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 10.5K | 1.8% |
| ALERUS FINANCIAL NA | 4.0K | 0.7% |
| Tower Research Capital LLC (TRC) | 3.4K | 0.6% |
| BARCLAYS PLC | 1.3K | 0.2% |
| PlanVest Financial, Inc | 1.0K | 0.2% |
| Tradewinds Capital Management, LLC | 50 | 0.0% |
| NFSG Corp | 34 | 0.0% |
| SBI Securities Co., Ltd. | 9 | 0.0% |
| OSAIC HOLDINGS, INC. | 2 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| HRT FINANCIAL LP | Increased | 40.6K | 205.4K | +164.8K |
| JANE STREET GROUP, LLC | New | 0 | 128.5K | +128.5K |
| CITADEL ADVISORS LLC | New | 0 | 79.5K | +79.5K |
| Virtu Financial LLC | New | 0 | 18.7K | +18.7K |
| GRANITE ISLANDS PRIVATE WEALTH, LLC | New | 0 | 15.7K | +15.7K |
| CITIGROUP INC | New | 0 | 12.9K | +12.9K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 47.0K | 34.2K | -12.8K |
| UBS Group AG | Increased | 702 | 13.3K | +12.6K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | 0 | 10.5K | +10.5K |
| VANGUARD FIDUCIARY TRUST CO | Sold Out | 4.7K | 0 | -4.7K |
| BARCLAYS PLC | New | 0 | 1.3K | +1.3K |
| PlanVest Financial, Inc | New | 0 | 1.0K | +1.0K |
| Tradewinds Capital Management, LLC | New | 0 | 50 | +50 |
| MORGAN STANLEY | Sold Out | 1 | 0 | -1 |
| ROYAL BANK OF CANADA | Sold Out | 1 | 0 | -1 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.