DaveManuel.com · Institutional Ownership · Who Owns It
GLAUKOS CORP (GKOS)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
370
Reporting holders
$8.6B
Reported value
103.1%
Of shares outstanding
0.3%
Calls
1.5%
Puts
+27
Holder change
Institutions report 60,803,329 shares against 58,983,937 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Over 100% because an adviser and a sub-adviser can both report the same shares, and both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $1.3B | 9,540,056 | 0.02% | 8q | +5.0%+$62.9M |
| Jupiter Topco LLC | $679.6M | 4,862,894 | 0.28% | new | FIRST |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $464.3M | 3,321,839 | 0.02% | 2q | +3.5%+$15.9M |
| PRIMECAP MANAGEMENT CO/CA/ | $425.0M | 3,040,705 | 0.25% | 31q | -9.8%-$46.1M |
| VANGUARD CAPITAL MANAGEMENT LLC | $356.5M | 2,551,132 | 0.01% | 2q | +1.7%+$5.9M |
| STATE STREET CORP | $323.7M | 2,315,568 | 0.01% | 31q | +6.1%+$18.6M |
| MILLENNIUM MANAGEMENT LLC | $225.2M incl. $4.2M options CALL+PUT | 1,581,016 | 0.08% | 31q | +34.7%+$58.0M |
| Holocene Advisors, LP | $211.7M | 1,514,931 | 0.48% | 7q | +9.5%+$18.3M |
| GEODE CAPITAL MANAGEMENT, LLC | $204.6M | 1,463,448 | 0.01% | 31q | +7.9%+$15.0M |
| CITADEL ADVISORS LLC | $203.9M incl. $9.6M options CALL+PUT | 1,390,017 | 0.02% | 31q | -3.9%-$8.3M |
| AMERIPRISE FINANCIAL INC | $183.8M | 1,315,057 | 0.04% | 31q | -18.4%-$41.3M |
| Capital World Investors | $142.0M | 1,015,943 | 0.02% | 31q | +2.7%+$3.8M |
| ALLIANCEBERNSTEIN L.P. | $135.1M | 1,254,703 | 0.04% | 31q | -10.2%-$15.4M |
| GOLDMAN SACHS GROUP INC | $125.4M | 897,021 | 0.01% | 31q | -34.8%-$66.8M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $105.2M | 752,642 | 0.01% | 31q | +5.4%+$5.3M |
| Invesco Ltd. | $98.8M | 706,877 | 0.01% | 31q | -22.7%-$29.0M |
| PRICE T ROWE ASSOCIATES INC /MD/ | $95.0M | 679,632 | 0.01% | 31q | +102.0%+$48.0M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $92.5M | 661,675 | 0.28% | 7q | -38.4%-$57.6M |
| Driehaus Capital Management LLC | $90.9M | 650,571 | 0.53% | 2q | +33.3%+$22.7M |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $90.5M | 647,428 | 0.14% | 3q | +5.8%+$4.9M |
| NORTHERN TRUST CORP | $85.6M | 612,496 | 0.01% | 31q | +6.3%+$5.1M |
| BRAIDWELL LP | $82.7M | 591,927 | 3.06% | 15q | -22.5%-$24.0M |
| MORGAN STANLEY | $82.4M | 589,793 | 0.00% | 35q | -13.1%-$12.4M |
| BANK OF AMERICA CORP /DE/ | $82.1M | 587,327 | 0.01% | 31q | -10.7%-$9.8M |
| UBS Group AG | $80.8M | 578,271 | 0.01% | 31q | +49.7%+$26.8M |
| JANE STREET GROUP, LLC | $79.7M incl. $79.3M options CALL+PUT | 2,531 | 0.01% | 25q | HELD |
| FULLER & THALER ASSET MANAGEMENT, INC. | $74.1M | 529,922 | 0.20% | new | NEW |
| NORGES BANK | $69.7M | 498,502 | 0.01% | 30q | -7.0%-$5.3M |
| Balyasny Asset Management L.P. | $68.7M | 491,636 | 0.09% | new | NEW |
| JENNISON ASSOCIATES LLC | $68.7M | 491,498 | 0.04% | 2q | +0.9%+$625.8K |
| WESTFIELD CAPITAL MANAGEMENT CO LP | $67.6M | 483,411 | 0.22% | 2q | HELD |
| LOOMIS SAYLES & CO L P | $65.6M | 469,388 | 0.08% | 11q | +11.4%+$6.7M |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | $62.4M | 446,550 | 1.10% | new | NEW |
| Clearbridge Investments, LLC | $60.2M | 431,066 | 0.05% | 6q | +50.7%+$20.3M |
| WELLINGTON MANAGEMENT GROUP LLP | $59.8M | 428,215 | 0.01% | 24q | +187.1%+$39.0M |
| LORD, ABBETT & CO. LLC | $58.8M | 420,466 | 0.17% | 2q | +249.8%+$42.0M |
| VANGUARD FIDUCIARY TRUST CO | $58.3M | 417,418 | 0.01% | 2q | +5.2%+$2.9M |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. | $58.2M | 416,231 | 0.51% | new | NEW |
| Allspring Global Investments Holdings, LLC | $57.5M | 417,999 | 0.09% | 19q | +6.1%+$3.3M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $53.3M incl. $51.4M options CALL+PUT | 13,813 | 0.00% | 31q | -60.6%-$82.0M |
| FMR LLC | $52.8M | 377,485 | 0.00% | 31q | +24.5%+$10.4M |
| PRINCIPAL FINANCIAL GROUP INC | $50.1M | 358,758 | 0.02% | 19q | +27.8%+$10.9M |
| Bank of New York Mellon Corp | $49.9M | 357,148 | 0.01% | 31q | +4.1%+$2.0M |
| Nuveen, LLC | $45.1M | 322,624 | 0.01% | 6q | -19.0%-$10.6M |
| MARSHALL WACE, LLP | $44.0M | 314,804 | 0.03% | 6q | +823.2%+$39.2M |
| Artisan Partners Limited Partnership | $43.2M | 309,266 | 0.07% | 31q | -49.1%-$41.7M |
| NEUBERGER BERMAN GROUP LLC | $42.0M | 300,752 | 0.03% | 13q | +103.4%+$21.4M |
| RIVERBRIDGE PARTNERS LLC | $39.4M | 282,089 | 1.10% | 21q | -34.9%-$21.1M |
| Anomaly Capital Management, LP | $38.6M | 275,995 | 1.47% | new | NEW |
| Champlain Investment Partners, LLC | $38.5M | 275,171 | 0.99% | 5q | -13.7%-$6.1M |
| TORONTO DOMINION BANK | $37.5M | 268,152 | 0.04% | 2q | +642.3%+$32.4M |
| Longaeva Partners L.P. | $33.0M | 236,192 | 0.72% | new | NEW |
| Assenagon Asset Management S.A. | $30.4M | 217,472 | 0.02% | 5q | +1965.1%+$28.9M |
| C WorldWide Group Holding A/S | $29.0M | 207,212 | 0.70% | 31q | HELD |
| Public Sector Pension Investment Board | $28.2M | 201,743 | 0.07% | 26q | -1.8%-$522.8K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $27.4M | 195,738 | 0.03% | 5q | +107.0%+$14.1M |
| JPMORGAN CHASE & CO | $24.9M | 172,186 | 0.00% | 31q | -46.8%-$21.9M |
| SEGALL BRYANT & HAMILL, LLC | $23.5M | 168,445 | 0.28% | 11q | +34.8%+$6.1M |
| BROWN CAPITAL MANAGEMENT LLC | $23.5M | 167,920 | 4.69% | 31q | -27.0%-$8.7M |
| Legal & General Group Plc | $23.2M | 165,836 | 0.00% | 31q | +3.3%+$739.9K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $21.7M | 154,929 | 0.01% | new | NEW |
| GILDER GAGNON HOWE & CO LLC | $21.3M | 152,448 | 0.22% | 15q | HELD |
| EVENTIDE ASSET MANAGEMENT, LLC | $21.0M | 150,036 | 0.28% | 6q | HELD |
| Integral Health Asset Management, LLC | $21.0M | 150,000 | 0.83% | 5q | -14.3%-$3.5M |
| RENAISSANCE TECHNOLOGIES LLC | $20.6M | 147,192 | 0.03% | 2q | +23.8%+$4.0M |
| TimesSquare Capital Management, LLC | $20.3M | 145,202 | 0.30% | new | NEW |
| KEYBANK NATIONAL ASSOCIATION/OH | $20.3M | 145,077 | 0.07% | 17q | HELD |
| RHUMBLINE ADVISERS | $20.0M | 143,454 | 0.02% | 31q | -7.0%-$1.5M |
| PRUDENTIAL FINANCIAL INC | $19.5M | 139,527 | 0.02% | 26q | +138.3%+$11.3M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $19.4M | 138,990 | 0.00% | 31q | -3.3%-$668.6K |
| Point72 Asset Management, L.P. | $19.3M | 138,300 | 0.02% | 5q | +36.5%+$5.2M |
| Bellevue Group AG | $18.0M | 128,667 | 0.38% | 10q | -11.7%-$2.4M |
| FRED ALGER MANAGEMENT, LLC | $17.6M | 125,911 | 0.06% | 31q | +10.5%+$1.7M |
| ROYAL BANK OF CANADA | $17.6M | 125,692 | 0.00% | 31q | -38.4%-$11.0M |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | $17.0M | 121,880 | 0.11% | 5q | -5.0%-$896.4K |
| SEI INVESTMENTS CO | $17.0M | 121,325 | 0.01% | 31q | -25.0%-$5.6M |
| Rhenman & Partners Asset Management AB | $16.6M | 119,000 | 1.57% | 31q | +41.7%+$4.9M |
| Swiss National Bank | $15.5M | 110,800 | 0.01% | 31q | -2.5%-$391.3K |
| Susquehanna Portfolio Strategies, LLC | $14.3M | 102,507 | 0.23% | 5q | +1798.3%+$13.6M |
| WCM INVESTMENT MANAGEMENT, LLC | $13.3M | 93,267 | 0.02% | 9q | HELD |
| Universal- Beteiligungs- und Servicegesellschaft mbH | $13.1M | 93,493 | 0.02% | 7q | +6.5%+$802.4K |
| RAYMOND JAMES FINANCIAL INC | $13.0M | 93,114 | 0.00% | 7q | -5.2%-$714.4K |
| NATIXIS ADVISORS, LLC | $12.8M | 91,918 | 0.01% | 18q | +325.9%+$9.8M |
| CANADA PENSION PLAN INVESTMENT BOARD | $12.2M | 87,500 | 0.01% | 3q | +99.3%+$6.1M |
| DIMENSIONAL FUND ADVISORS LP | $12.2M | 87,301 | 0.00% | 21q | -56.1%-$15.6M |
| Cinctive Capital Management LP | $11.9M | 85,070 | 0.44% | new | NEW |
| CITIGROUP INC | $11.0M | 78,941 | 0.00% | 31q | +28.4%+$2.4M |
| Granite Investment Partners, LLC | $10.9M | 78,154 | 0.56% | 31q | -30.1%-$4.7M |
| ASSETMARK, INC | $10.3M | 73,622 | 0.02% | 5q | -3.5%-$375.1K |
| SIT INVESTMENT ASSOCIATES INC | $10.1M | 72,305 | 0.19% | 9q | +5.5%+$531.1K |
| BESSEMER GROUP INC | $10.1M | 72,135 | 0.01% | 8q | +1918.9%+$9.6M |
| California Public Employees Retirement System | $9.9M | 70,669 | 0.01% | 31q | +2.9%+$281.6K |
| Defilade Capital Management, L.P. | $9.3M | 66,519 | 1.24% | new | NEW |
| AustralianSuper Pty Ltd | $9.1M | 65,319 | 0.04% | 5q | -50.3%-$9.3M |
| WELLS FARGO & COMPANY/MN | $9.1M | 65,221 | 0.00% | 31q | +120.7%+$5.0M |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $9.0M | 64,570 | 0.01% | 31q | -2.8%-$260.5K |
| TWO SIGMA INVESTMENTS, LP | $8.9M | 63,430 | 0.01% | 4q | HELD |
| VICTORY CAPITAL MANAGEMENT INC | $8.7M | 62,202 | 0.00% | 24q | -18.1%-$1.9M |
| DEUTSCHE BANK AG\ | $8.7M | 61,957 | 0.00% | 34q | +18.9%+$1.4M |
| NEW YORK STATE COMMON RETIREMENT FUND | $8.4M | 60,319 | 0.01% | 31q | -20.9%-$2.2M |
Showing the largest 100 of 370 reported holders.
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-11 | Gilliam Joseph E | PRESIDENT & COO | Sold | 60,000 | $10.8M ×2 |
| 2026-08-07 | Thurman Alex R. | SVP & CHIEF FINANCIAL OFFICER | Sold | 20,000 | $3.6M |
| 2026-08-28 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 13,744 | $2.5M ×3 |
| 2026-07-16 | Thurman Alex R. | SVP & CHIEF FINANCIAL OFFICER | Sold | 10,000 | $1.6M |
| 2026-07-09 | Thurman Alex R. | SVP & CHIEF FINANCIAL OFFICER | Sold | 10,000 | $1.6M |
| 2026-07-06 | Thurman Alex R. | SVP & CHIEF FINANCIAL OFFICER | Sold | 10,000 | $1.5M |
| 2026-05-14 | Kliman Gilbert H | Director | Sold | 5,000 | $703.8K |
| 2026-05-11 | Kliman Gilbert H | Director | Sold | 5,000 | $675.0K |
| 2026-08-19 | Kliman Gilbert H | Director | Sold | 2,500 | $475.0K |
| 2026-10-05 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 1,527 | $251.1K ×3 |
| 2026-09-25 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 1,615 | $249.2K ×4 |
| 2026-09-16 | Navratil Tomas | CHIEF DEVELOPMENT OFFICER | Sold | 1,457 | $243.2K ×7 |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 100 | $131.0M | 796,557 | 25 | 24 | 31 | 0.0% |
| Q2 2026 | 370 | $8.6B | 60,803,329 | 64 | 147 | 98 | 1.8% |
| Q1 2026 | 343 | $6.4B | 57,990,592 | 43 | 103 | 126 | 1.6% |
| Q4 2025 | 338 | $6.6B | 57,113,093 | 58 | 118 | 99 | 1.8% |
| Q3 2025 | 317 | $4.7B | 56,595,298 | 61 | 100 | 112 | 1.1% |
| Q2 2025 | 301 | $6.4B | 61,235,329 | 47 | 140 | 83 | 1.2% |
| Q1 2025 | 321 | $5.8B | 57,715,335 | 55 | 114 | 109 | 1.8% |
| Q4 2024 | 327 | $8.7B | 57,145,181 | 42 | 108 | 104 | 1.3% |
| Q3 2024 | 314 | $7.2B | 55,274,048 | 54 | 120 | 85 | 0.7% |
| Q2 2024 | 282 | $6.6B | 55,606,825 | 53 | 103 | 75 | 0.4% |
| Q1 2024 | 261 | $5.2B | 54,589,060 | 44 | 61 | 105 | 0.6% |
| Q4 2023 | 248 | $4.3B | 52,199,195 | 42 | 80 | 76 | 2.8% |
| Q3 2023 | 234 | $3.8B | 50,541,371 | 31 | 77 | 77 | 1.1% |
| Q2 2023 | 218 | $3.5B | 49,243,045 | 34 | 76 | 79 | 1.1% |
| Q1 2023 | 202 | $2.4B | 47,861,164 | 20 | 75 | 63 | 0.7% |
| Q4 2022 | 215 | $2.1B | 47,437,587 | 19 | 64 | 83 | 1.0% |
| Q3 2022 | 211 | $2.7B | 49,705,300 | 44 | 77 | 47 | 2.1% |
| Q2 2022 | 189 | $2.3B | 49,088,345 | 21 | 61 | 63 | 1.5% |
| Q1 2022 | 209 | $2.8B | 46,774,226 | 29 | 68 | 69 | 4.0% |
| Q4 2021 | 205 | $2.7B | 57,243,958 | 31 | 72 | 65 | 4.4% |
| Q3 2021 | 202 | $2.8B | 57,698,161 | 32 | 76 | 50 | 1.8% |
| Q2 2021 | 217 | $6.8B | 80,148,849 | 33 | 75 | 64 | 0.3% |
| Q1 2021 | 215 | $6.9B | 81,634,441 | 35 | 68 | 78 | 0.1% |
| Q4 2020 | 205 | $6.4B | 85,213,171 | 41 | 54 | 64 | 0.2% |
| Q3 2020 | 177 | $3.3B | 66,930,759 | 26 | 74 | 38 | 0.8% |
| Q2 2020 | 178 | $2.4B | 63,173,135 | 40 | 77 | 40 | 0.6% |
| Q1 2020 | 161 | $2.6B | 82,625,713 | 44 | 65 | 32 | 0.4% |
| Q4 2019 | 154 | $3.4B | 62,274,927 | 30 | 65 | 30 | 0.5% |
| Q3 2019 | 146 | $3.6B | 56,798,332 | 19 | 61 | 40 | 0.2% |
| Q2 2019 | 174 | $3.8B | 49,567,819 | 28 | 81 | 43 | 0.7% |
| Q1 2019 | 173 | $4.2B | 53,273,039 | 40 | 54 | 54 | 0.5% |
| Q4 2018 | 146 | $2.9B | 51,177,753 | 3 | 3 | 4 | 0.5% |