Glucotrack (GCTK)
Glucotrack on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq.
145K
Short interest
settlement 2026-10-15
1.0
Days to cover
unchanged vs prior
55.5%
Short share of volume
2026-10-29
23,728
Fails to deliver
settlement 2026-10-13
Thu 12 Nov
Next earnings
estimated date
$0
Insider flow, 90 days
0 buys, 0 sells
As of 2026-10-29.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in GCTK is 144,727 shares, up 48,117 shares over the last month. Over the last 48 readings it ranged from 19,830 shares (15 August 2025) to 2,555,155 shares (31 July 2026). The latest reading sits at the bottom of that range. At the reported average volume of 265K shares a day that is 1.0 days to cover.
Embed this chart.The embed keeps its attribution line.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 144,727 | +18.5% | 264,836 | 1.00 |
| 2026-09-30 | 122,105 | +26.4% | 7,388,724 | 1.00 |
| 2026-09-15 | 96,610 | +287.2% | 128,278 | 1.00 |
| 2026-08-31 | 24,951 | -85.0% | 207,650 | 1.00 |
| 2026-08-14 | 165,864 | -93.5% | 7,214,843 | 1.00 |
| 2026-07-31 | 2,555,155 | +7.0% | 38,610,931 | 1.00 |
| 2026-07-15 | 2,388,682 | +368.1% | 11,948,792 | 1.00 |
| 2026-06-30 | 510,338 | +1.7% | 236,381 | 2.16 |
| 2026-06-15 | 501,768 | +38.0% | 1,352,536 | 1.00 |
| 2026-05-29 | 363,693 | +725.9% | 750,364 | 1.00 |
| 2026-05-15 | 44,035 | -98.0% | 9,850,067 | 1.00 |
| 2026-04-30 | 2,166,796 | +223.2% | 9,640,460 | 1.00 |
| 2026-04-15 | 670,479 | -24.1% | 3,120,773 | 1.00 |
| 2026-03-31 | 883,209 | +1933.7% | 2,982,970 | 1.00 |
| 2026-03-13 | 43,428 | +53.5% | 48,922 | 1.00 |
| 2026-02-27 | 28,292 | -24.6% | 37,296 | 1.00 |
| 2026-02-13 | 37,508 | -84.0% | 98,162 | 1.00 |
| 2026-01-30 | 234,255 | +634.6% | 1,698,025 | 1.00 |
| 2026-01-15 | 31,889 | -28.3% | 30,507 | 1.05 |
| 2025-12-31 | 44,499 | +15.1% | 29,302 | 1.52 |
| 2025-12-15 | 38,672 | +28.4% | 104,776 | 1.00 |
| 2025-11-28 | 30,115 | -7.9% | 19,119 | 1.58 |
| 2025-11-14 | 32,701 | -34.9% | 21,480 | 1.52 |
| 2025-10-31 | 50,229 | -13.2% | 62,777 | 1.00 |
| 2025-10-15 | 57,833 | -31.2% | 125,608 | 1.00 |
| 2025-09-30 | 84,028 | -78.6% | 255,439 | 1.00 |
| 2025-09-15 | 391,903 | +866.4% | 8,073,792 | 1.00 |
| 2025-08-29 | 40,555 | +104.5% | 34,870 | 1.16 |
| 2025-08-15 | 19,830 | -38.5% | 39,920 | 1.00 |
| 2025-07-31 | 32,262 | +11.9% | 1,870,419 | 1.00 |
| 2025-07-15 | 28,819 | -85.2% | 156,275 | 1.00 |
| 2025-06-30 | 194,908 | -86.7% | 3,104,245 | 1.00 |
| 2025-06-13 | 1,468,965 | +146.3% | 6,010,683 | 1.00 |
| 2025-05-30 | 596,332 | -53.5% | 1,494,548 | 1.00 |
| 2025-05-15 | 1,281,909 | +70.8% | 7,508,606 | 1.00 |
| 2025-04-30 | 750,707 | +2934.8% | 7,270,743 | 1.00 |
| 2025-04-15 | 24,737 | -43.3% | 2,596,385 | 1.00 |
| 2025-03-31 | 43,631 | -84.6% | 13,603,649 | 1.00 |
| 2025-03-14 | 283,937 | -63.9% | 671,173 | 1.00 |
| 2025-02-28 | 787,208 | +653.4% | 1,643,211 | 1.00 |
| 2025-02-14 | 104,495 | -84.1% | 6,723,288 | 1.00 |
| 2025-01-31 | 657,536 | -46.2% | 130,984,619 | 1.00 |
| 2025-01-15 | 1,221,764 | +117.9% | 144,897,577 | 1.00 |
| 2024-12-31 | 560,655 | +42.3% | 855,581 | 1.00 |
| 2024-12-13 | 394,070 | +359.6% | 725,227 | 1.00 |
| 2024-11-29 | 85,737 | -66.7% | 722,114 | 1.00 |
| 2024-11-15 | 257,739 | +579.7% | 1,281,811 | 1.00 |
| 2024-10-31 | 37,921 | +78.2% | 4,954 | 7.65 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 29 October 2026, the short share of GCTK volume is 55.5%, up 34.7 points over the last five sessions. Over the last 30 readings it ranged from 17.3% (20 October 2026) to 76.8% (22 September 2026). The latest reading is 13.5 points above the 30-session average of 42.0%, on 2.3M shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-29 | 1.3M | 2.3M | 55.5% | 162,763 |
| 2026-10-28 | 6.6M | 11.1M | 59.5% | 1,571,867 |
| 2026-10-27 | 1.1M | 1.7M | 61.9% | 231,978 |
| 2026-10-26 | 12.1M | 22.2M | 54.3% | 3,309,932 |
| 2026-10-23 | 244K | 381K | 64.0% | 27,913 |
| 2026-10-22 | 17K | 80K | 20.8% | 251 |
| 2026-10-21 | 9K | 34K | 25.8% | 50 |
| 2026-10-20 | 4K | 21K | 17.3% | 232 |
| 2026-10-19 | 12K | 45K | 26.7% | 310 |
| 2026-10-16 | 21K | 91K | 23.4% | 3,466 |
| 2026-10-15 | 21K | 81K | 25.7% | 1,911 |
| 2026-10-14 | 60K | 241K | 25.0% | 20,875 |
| 2026-10-13 | 27K | 73K | 36.8% | 100 |
| 2026-10-12 | 114K | 204K | 55.5% | 0 |
| 2026-10-09 | 56K | 149K | 37.4% | 0 |
| 2026-10-08 | 61K | 132K | 46.1% | 0 |
| 2026-10-07 | 17K | 61K | 27.2% | 0 |
| 2026-10-06 | 39K | 102K | 38.3% | 0 |
| 2026-10-05 | 33K | 102K | 32.0% | 7,579 |
| 2026-10-02 | 45K | 162K | 27.8% | 8,928 |
| 2026-10-01 | 113K | 235K | 48.0% | 23,358 |
| 2026-09-30 | 143K | 285K | 50.2% | 44,628 |
| 2026-09-29 | 22K | 96K | 23.3% | 4,397 |
| 2026-09-28 | 72K | 216K | 33.1% | 6,291 |
| 2026-09-25 | 401K | 786K | 51.0% | 110,029 |
| 2026-09-24 | 6.7M | 11.7M | 57.4% | 1,519,668 |
| 2026-09-23 | 113K | 186K | 60.6% | 8,977 |
| 2026-09-22 | 30K | 39K | 76.8% | 1,024 |
| 2026-09-21 | 13K | 19K | 69.9% | 4 |
| 2026-09-18 | 3K | 9K | 29.4% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 13 October 2026, the fails-to-deliver balance in GCTK is 23,728 shares, up 16,997 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (25 August 2026) to 1,735,514 shares (25 September 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-13 | 23,728 | $1.16 | $28K |
| 2026-10-07 | 6,731 | $1.13 | $8K |
| 2026-10-06 | 6,731 | $1.11 | $7K |
| 2026-09-28 | 1,600,766 | $1.82 | $2.9M |
| 2026-09-25 | 1,735,514 | $2.58 | $4.5M |
| 2026-09-24 | 824,409 | $2.03 | $1.7M |
| 2026-09-23 | 2,424 | $2.22 | $5K |
| 2026-09-21 | 2,044 | $2.47 | $5K |
| 2026-09-18 | 1,669 | $2.38 | $4K |
| 2026-09-17 | 860 | $2.25 | $2K |
| 2026-09-16 | 2,286 | $2.27 | $5K |
| 2026-09-15 | 15,797 | $2.45 | $39K |
| 2026-09-14 | 15,559 | $2.55 | $40K |
| 2026-09-11 | 4,520 | $3.23 | $15K |
| 2026-09-10 | 6,541 | $3.14 | $21K |
| 2026-09-09 | 2,155 | $2.93 | $6K |
| 2026-09-08 | 1,043 | $2.98 | $3K |
| 2026-09-04 | 10 | $3.32 | $33 |
| 2026-09-03 | 9 | $3.53 | $32 |
| 2026-09-02 | 53 | $3.68 | $195 |
| 2026-09-01 | 32 | $4.25 | $136 |
| 2026-08-27 | 5 | $0.32 | $2 |
| 2026-08-25 | 1 | $0.33 | $0 |
| 2026-08-18 | 61,359 | $0.34 | $21K |
| 2026-08-12 | 28 | $0.37 | $10 |
| 2026-08-10 | 645 | $0.43 | $277 |
| 2026-08-07 | 642 | $0.47 | $302 |
| 2026-08-06 | 16,708 | $0.53 | $9K |
| 2026-08-05 | 419,651 | $0.60 | $252K |
| 2026-08-04 | 199 | $0.41 | $82 |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for GCTK in the last 90 days. The most recent filings are listed below. Latest filing: Malave Luis (Director) on 2025-10-03.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2025-10-03 | Malave Luis | Director | Grant | 463 | $0.00 | $0 | 4K |
| 2025-10-03 | Carter Erin Catherine | Director | Grant | 386 | $0.00 | $0 | 2K |
| 2025-10-03 | Balo Andrew K | Director | Grant | 1K | $0.00 | $0 | 5K |
| 2025-07-11 | Malave Luis | Director | Grant | 1K | $0.00 | $0 | 4K |
| 2025-07-11 | Carter Erin Catherine | Director | Grant | 1K | $0.00 | $0 | 2K |
| 2025-07-11 | Balo Andrew K | Director | Grant | 3K | $0.00 | $0 | 3K |
| 2025-03-26 | Fischell Robert | Director | Grant | 1K | $0.00 | $0 | 2K |
| 2025-03-26 | Balo Andrew K | Director | Grant | 4K | $0.00 | $0 | 4K |
| 2025-03-26 | Danzig Allen | Director | Grant | 1K | $0.00 | $0 | 2K |
| 2025-03-26 | Carter Erin Catherine | Director | Grant | 2K | $0.00 | $0 | 46K |
| 2025-03-26 | Malave Luis | Director | Grant | 2K | $0.00 | $0 | 144K |
| 2025-03-26 | BALLANTYNE JOHN | Director,TenPercentOwner | Grant | 4K | $0.00 | $0 | 4K |
| 2025-03-25 | Goode Paul | Chief Executive Officer | Other transaction | 42 | price not stated in the filing | not stated | 339 |
| 2025-03-25 | Malave Luis | Director | Grant | 35 | $0.00 | $0 | 2K |
| 2025-03-25 | Carter Erin Catherine | Director | Grant | 32 | $0.00 | $0 | 762 |
| 2025-03-25 | Balo Andrew K | Director | Grant | 75 | $0.00 | $0 | 75 |
| 2025-03-12 | Goode Paul | Chief Executive Officer | Exercise (in or at the money) | 15K | $0.00 | $0 | 19K |
| 2025-03-12 | Carter Erin Catherine | Director | Exercise (in or at the money) | 40K | $0.00 | $0 | 44K |
| 2025-03-12 | Malave Luis | Director | Exercise (in or at the money) | 134K | $0.00 | $0 | 142K |
| 2025-03-12 | BALLANTYNE JOHN | Director,TenPercentOwner | Exercise (in or at the money) | 2.6M | $0.00 | $0 | 2.7M |
| 2025-03-12 | John A. Ballantyne Revocable Living Trust dated 08/01/2017 | TenPercentOwner | Exercise (in or at the money) | 2.6M | $0.00 | $0 | 2.7M |
| 2025-02-05 | Goode Paul | Chief Executive Officer | Other transaction | 2K | price not stated in the filing | not stated | 4K |
| 2024-11-14 | Goode Paul | Chief Executive Officer | Conversion | 796 | $31.20 | $25K | 2K |
| 2024-11-14 | Carter Erin Catherine | Director | Conversion | 2K | $31.20 | $65K | 3K |
| 2024-11-14 | Malave Luis | Director | Conversion | 7K | $31.20 | $215K | 8K |
| 2024-11-14 | BALLANTYNE JOHN | Director,TenPercentOwner | Other transaction | 132K | $31.00 | $4.1M | 183K |
| 2024-11-14 | John A. Ballantyne Revocable Living Trust dated 08/01/2017 | TenPercentOwner | Other transaction | 132K | $31.00 | $4.1M | 183K |
| 2024-04-22 | SYCOFF DREW | Director,TenPercentOwner | Buy | 183K | $1.26 | $230K | 3.0M |
| 2024-04-08 | Fischell Robert | Director | Grant | 229 | $0.00 | $0 | 547 |
| 2024-04-08 | Danzig Allen | Director | Grant | 229 | $0.00 | $0 | 424 |
| 2024-04-08 | Carter Erin Catherine | Director | Grant | 458 | $0.00 | $0 | 1K |
| 2024-04-08 | Malave Luis | Director | Grant | 489 | $0.00 | $0 | 1K |
| 2023-12-31 | Carter Erin Catherine | Director | Grant | 903 | $0.00 | $0 | 903 |
| 2023-12-31 | Malave Luis | Director | Grant | 362 | $0.00 | $0 | 634 |
| 2023-04-20 | Malave Luis | Director | Grant | 121 | $0.00 | $0 | 272 |
| 2023-01-09 | Malave Luis | Director | Grant | 29 | $0.00 | $0 | 151 |
| 2022-10-04 | Danzig Allen | Director | Grant | 44 | $0.00 | $0 | 195 |
| 2022-10-04 | Malave Luis | Director | Grant | 44 | $0.00 | $0 | 122 |
| 2022-06-30 | Malave Luis | Director | Grant | 34 | $0.00 | $0 | 78 |
| 2022-03-31 | Malave Luis | Director | Grant | 25 | $0.00 | $0 | 44 |
| 2021-12-31 | Malave Luis | Director | Grant | 11 | $0.00 | $0 | 19 |
| 2021-09-30 | Malave Luis | Director | Grant | 8 | $0.00 | $0 | 8 |
| 2021-08-24 | Fischell Robert | Director | Grant | 318 | $0.00 | $0 | 318 |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON1 holder reports 5% or more of GCTK in its latest filing, on Schedule 13G (passive). The holder is White Lion Capital LLC at 10.0% of the class (79,734 shares), filed 2026-09-02 for an event on 2026-08-26.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-09-02 | 13G | White Lion Capital LLCother entity | 80K | 10.0% | 2026-08-26 |
| 2026-05-15 | 13G/Ano. 1 | Steven Boydparent holding company, individual | 102K | 5.0% | 2026-03-31 |
| 2026-05-15 | 13G/Ano. 1 | Armistice Capital, LLCinvestment adviser, other entity | 102K | 5.0% | 2026-03-31 |
| 2026-02-17 | 13G | Ikarian Capital, LLCinvestment adviser | 46K | 4.5% | 2025-12-31 |
| 2026-02-17 | 13G | Neil Shahrestaniindividual, parent holding company | 46K | 4.5% | 2025-12-31 |
13F holders
Tracked managers holding GCTK at their latest 13F. JSON1 of the 30 tracked managers held GCTK at their latest 13F, $25K in total at quarter-end prices. Citadel Advisors is the largest at $25K (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 0 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Citadel Advisors | 2026-06-30 | 80K | $25K | 0.00% | new |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
What this page is
Glucotrack in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Glucotrack (GCTK), SEC CIK 1506983, listed on Nasdaq. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-29.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-13.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-09-02.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-05-14.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2025-10-03.JSON and CSV
- Company record
- EDGAR filing index for CIK 1506983Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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Datasets
Frequently Asked Questions
How much of GCTK is sold short?
What is GCTK's daily short volume?
Does GCTK have fails to deliver?
Are GCTK insiders buying or selling?
Who owns 5% or more of GCTK?
Which tracked 13F managers own GCTK?
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.