309 tracked 13F filers disclose a position in GKOS as of the latest SEC 13F filings, a combined $6.2B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $978.6M | 9.1M | ▼−0.8% Reduced · −75K sh | Q1 2026 | |
| 2 | Janus Henderson Group Ltd. | $575.8M | 5.3M | ▲+77% Added · +2.3M sh | Q1 2026 | |
| 3 | PRIMECAP MANAGEMENT CO/CA/ | $362.9M | 3.4M | ▼−0.2% Reduced · −6K sh | Q1 2026 | |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | $345.4M | 3.2M | →First observed position No prior filed position | Q1 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $270.1M | 2.5M | →First observed position No prior filed position | Q1 2026 | |
| 6 | STATE STREET CORP | $323.7M | 2.3M | ▲+6.1% Added · +133K sh | Q2 2026 | |
| 7 | AMERIPRISE FINANCIAL INC | $173.4M | 1.6M | ▼−23% Reduced · −494K sh | Q1 2026 | |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | $204.6M | 1.5M | ▲+7.9% Added · +107K sh | Q2 2026 | |
| 9 | CITADEL ADVISORS LLC | $155.8M | 1.4M | ▲54× Added · +1.4M sh | Q1 2026 | |
| 10 | ALLIANCEBERNSTEIN L.P. | $157.8M | 1.4M | ▼−15% Reduced · −246K sh | Q1 2026 | |
| 11 | Holocene Advisors, LP | $149.0M | 1.4M | ▲+6.5% Added · +84K sh | Q1 2026 | |
| 12 | GOLDMAN SACHS GROUP INC | $148.0M | 1.4M | ▲+1.8% Added · +25K sh | Q1 2026 | |
| 13 | MILLENNIUM MANAGEMENT LLC | $126.4M | 1.2M | ▼−27% Reduced · −436K sh | Q1 2026 | |
| 14 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $76.9M | 714K | ▲+0.1% Added · +363 sh | Q1 2026 | |
| 15 | MORGAN STANLEY | $73.1M | 679K | ▲+1.2% Added · +8K sh | Q1 2026 | |
| 16 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $92.5M | 662K | ▼−38% Reduced · −412K sh | Q2 2026 | |
| 17 | BANK OF AMERICA CORP /DE/ | $70.8M | 657K | ▲+22% Added · +119K sh | Q1 2026 | |
| 18 | Artisan Partners Limited Partnership | $65.4M | 607K | ▼−14% Reduced · −95K sh | Q1 2026 | |
| 19 | BRAIDWELL LP | $82.7M | 592K | ▼−22% Reduced · −172K sh | Q2 2026 | |
| 20 | NORTHERN TRUST CORP | $62.0M | 576K | ▼−1.9% Reduced · −11K sh | Q1 2026 | |
| 21 | NORGES BANK | $60.5M | 536K | ▼−27% Reduced · −203K sh | Q4 2025 | |
| 22 | FULLER & THALER ASSET MANAGEMENT, INC. | $74.1M | 530K | ▲New +530K sh | Q2 2026 | |
| 23 | JENNISON ASSOCIATES LLC | $52.4M | 487K | ▲New +487K sh | Q1 2026 | |
| 24 | WESTFIELD CAPITAL MANAGEMENT CO LP | $67.6M | 483K | ▲+0.2% Added · +1K sh | Q2 2026 | |
| 25 | SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | $62.4M | 447K | ▲New +447K sh | Q2 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 9 funds opened a new position in GKOS and 19 added to an existing one, while 28 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 175 funds | $188.4B |
| APPLE INCAAPL | 172 funds | $265.0B |
| NVIDIA CORPNVDA | 171 funds | $364.6B |
| MICROSOFT CORPMSFT | 171 funds | $241.3B |
| ELI LILLY & COLLY | 170 funds | $82.5B |
| ALPHABET INC-CL AGOOGL | 169 funds | $154.5B |
| META PLATFORMS INC-CLASS AMETA | 167 funds | $110.0B |
| BROADCOM INCAVGO | 165 funds | $145.0B |
| ALPHABET INC-CL CGOOG | 163 funds | $115.9B |
| VISA INC-CLASS A SHARESV | 163 funds | $61.8B |
| JPMORGAN CHASE & COJPM | 163 funds | $55.0B |
| TESLA INCTSLA | 162 funds | $73.2B |
Ranked by how many of GKOS's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 28, 2026 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sell (S) | 10 | $2K |
| Aug 28, 2026 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sell (S) | 6K | $1.1M |
| Aug 28, 2026 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sell (S) | 8K | $1.4M |
| Aug 19, 2026 | Kliman Gilbert H | Director | Sell (S) | 3K | $475K |
| Aug 11, 2026 | Gilliam Joseph E | PRESIDENT & COO | Sell (S) | 28K | $5.0M |
| Aug 11, 2026 | Gilliam Joseph E | PRESIDENT & COO | Sell (S) | 32K | $5.8M |
| Aug 7, 2026 | Thurman Alex R. | SVP & CHIEF FINANCIAL OFFICER | Sell (S) | 20K | $3.6M |
| Jul 31, 2026 | WEN LEANA | Director | Sell (S) | 525 | $88K |
| Jul 16, 2026 | Thurman Alex R. | SVP & CHIEF FINANCIAL OFFICER | Sell (S) | 10K | $1.6M |
| Jul 9, 2026 | Thurman Alex R. | SVP & CHIEF FINANCIAL OFFICER | Sell (S) | 10K | $1.6M |
| Jul 6, 2026 | Thurman Alex R. | SVP & CHIEF FINANCIAL OFFICER | Sell (S) | 10K | $1.5M |
| Jul 1, 2026 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sell (S) | 716 | $100K |
Connected entities for GKOS
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/GKOS/capital-change-brief"
Use Arkolith's capital_change_brief for GKOS. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for GKOS. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.