GLAUKOS CORP (GKOS) Institutional Shareholders
GLAUKOS CORP (GKOS) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $8.29B in GKOS holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of GKOS tracked by InsiderSet, reporting ownership valued at approximately $1.33B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $1.54B, representing an estimated gain of +15.50% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 52% of the total disclosed GKOS value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Janus Henderson Group Plc, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in GLAUKOS CORP (GKOS).
This page ranks the largest institutional GKOS shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
353
Total Reported Value
$8.29B
Largest Holder
Blackrock, Inc.
Largest Position
$1.33B
Insider Transactions (90d)
16
Latest Filing Quarter
Q2 2026
New Institutional Positions
51
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.02% | 9,540,056 | $1,333,318,226 | $1,539,955,840 | +$206,637,614 | +15.50% | |
| Janus Henderson Group Plc | 0.29% | 5,348,395 | $575,844,474 | $863,337,921 | +$287,493,447 | +49.93% | |
| Vanguard Portfolio Management Llc | 0.02% | 3,321,839 | $464,260,219 | $536,211,251 | +$71,951,032 | +15.50% | |
| Primecap Management Co/Ca/ | 0.25% | 3,040,705 | $424,968,931 | $490,830,601 | +$65,861,670 | +15.50% | |
| Vanguard Capital Management Llc | 0.01% | 2,551,132 | $356,546,208 | $411,803,727 | +$55,257,519 | +15.50% | |
| State Street Corp | 0.01% | 2,315,568 | $323,673,467 | $373,778,987 | +$50,105,520 | +15.48% | |
| Millennium Management Llc | 0.15% | 1,581,016 | $220,962,796 | $255,207,603 | +$34,244,807 | +15.50% | |
| Holocene Advisors, Lp | 0.48% | 1,514,931 | $211,726,757 | $244,540,162 | +$32,813,405 | +15.50% | |
| Geode Capital Management, Llc | 0.01% | 1,463,448 | $204,570,637 | $236,229,776 | +$31,659,139 | +15.48% | |
| Citadel Advisors Llc | 0.11% | 1,390,017 | $194,268,776 | $224,376,544 | +$30,107,768 | +15.50% | |
| Ameriprise Financial Inc | 0.04% | 1,315,057 | $183,792,773 | $212,276,501 | +$28,483,728 | +15.50% | |
| Capital World Investors | 0.02% | 1,015,943 | $141,988,194 | $163,993,519 | +$22,005,325 | +15.50% | |
| Alliancebernstein L.P. | 0.04% | 1,254,703 | $135,081,325 | $202,534,158 | +$67,452,833 | +49.93% | |
| Goldman Sachs Group Inc | 0.01% | 897,021 | $125,367,655 | $144,797,130 | +$19,429,475 | +15.50% | |
| Charles Schwab Investment Management Inc | 0.01% | 752,642 | $105,189,246 | $121,491,472 | +$16,302,226 | +15.50% | |
| Invesco Ltd. | 0.01% | 706,877 | $98,793,129 | $114,104,085 | +$15,310,956 | +15.50% | |
| Price T Rowe Associates Inc | 0.01% | 679,632 | $94,987,000 | $109,706,197 | +$14,719,197 | +15.50% | |
| William Blair Investment Management, Llc | 0.28% | 661,675 | $92,475,698 | $106,807,578 | +$14,331,880 | +15.50% | |
| Driehaus Capital Management Llc | 0.53% | 650,571 | $90,923,803 | $105,015,171 | +$14,091,368 | +15.50% | |
| Nomura Asset Management International Inc. | 0.14% | 647,428 | $90,485,000 | $104,507,828 | +$14,022,828 | +15.50% | |
| Northern Trust Corp | 0.01% | 612,496 | $85,602,441 | $98,869,104 | +$13,266,663 | +15.50% | |
| Braidwell Lp | 3.06% | 591,927 | $82,727,718 | $95,548,856 | +$12,821,138 | +15.50% | |
| Morgan Stanley | 0.00% | 589,793 | $82,429,643 | $95,204,386 | +$12,774,743 | +15.50% | |
| Bank Of America Corp | 0.01% | 587,327 | $82,084,821 | $94,806,324 | +$12,721,503 | +15.50% | |
| Ubs Group Ag | 0.01% | 578,271 | $80,819,154 | $93,344,505 | +$12,525,351 | +15.50% | |
| Fuller & Thaler Asset Management, Inc. | 0.20% | 529,922 | $74,061,922 | $85,540,009 | +$11,478,087 | +15.50% | |
| Norges Bank | 0.01% | 498,502 | $69,670,640 | $80,468,193 | +$10,797,553 | +15.50% | |
| Balyasny Asset Management L.P. | 0.13% | 491,636 | $68,711,047 | $79,359,883 | +$10,648,836 | +15.50% | |
| Jennison Associates Llc | 0.04% | 491,498 | $68,691,761 | $79,337,607 | +$10,645,846 | +15.50% | |
| Westfield Capital Management Co Lp | 0.22% | 483,411 | $67,561,521 | $78,032,204 | +$10,470,683 | +15.50% | |
| Loomis Sayles & Co L P | 0.08% | 469,388 | $65,601,667 | $75,768,611 | +$10,166,944 | +15.50% | |
| Summit Partners Public Asset Management, Llc | 1.62% | 446,550 | $62,409,828 | $72,082,101 | +$9,672,273 | +15.50% | |
| Clearbridge Investments, Llc | 0.05% | 431,066 | $60,245,854 | $69,582,674 | +$9,336,820 | +15.50% | |
| Wellington Management Group Llp | 0.01% | 428,215 | $59,847,329 | $69,122,465 | +$9,275,136 | +15.50% | |
| Lord, Abbett & Co. Llc | 0.17% | 420,466 | $58,764,000 | $67,871,622 | +$9,107,622 | +15.50% | |
| Vanguard Fiduciary Trust Co | 0.01% | 417,418 | $58,338,340 | $67,379,614 | +$9,041,274 | +15.50% | |
| Vaughan Nelson Investment Management, L.P. | 0.51% | 416,231 | $58,172,444 | $67,188,008 | +$9,015,564 | +15.50% | |
| Allspring Global Investments Holdings, Llc | 0.09% | 417,999 | $57,504,123 | $67,473,399 | +$9,969,276 | +17.34% | |
| Fmr Llc | 0.00% | 377,485 | $52,757,254 | $60,933,629 | +$8,176,375 | +15.50% | |
| Principal Financial Group Inc | 0.02% | 358,758 | $50,140,018 | $57,910,716 | +$7,770,698 | +15.50% | |
| Bank Of New York Mellon Corp | 0.01% | 357,148 | $49,915,056 | $57,650,830 | +$7,735,774 | +15.50% | |
| Nuveen, Llc | 0.01% | 322,624 | $45,089,931 | $52,077,966 | +$6,988,035 | +15.50% | |
| Marshall Wace, Llp | 0.04% | 314,804 | $43,997,005 | $50,815,662 | +$6,818,657 | +15.50% | |
| Artisan Partners Limited Partnership | 0.07% | 309,266 | $43,223,016 | $49,921,718 | +$6,698,702 | +15.50% | |
| Neuberger Berman Group Llc | 0.03% | 300,752 | $42,033,100 | $48,547,388 | +$6,514,288 | +15.50% | |
| Riverbridge Partners Llc | 1.10% | 282,089 | $39,424,774 | $45,534,806 | +$6,110,032 | +15.50% | |
| Anomaly Capital Management, Lp | 1.47% | 275,995 | $38,573,061 | $44,551,113 | +$5,978,052 | +15.50% | |
| Champlain Investment Partners, Llc | 0.99% | 275,171 | $38,457,899 | $44,418,103 | +$5,960,204 | +15.50% | |
| Toronto Dominion Bank | 0.06% | 268,152 | $37,476,924 | $43,285,096 | +$5,808,172 | +15.50% | |
| Longaeva Partners L.P. | 0.95% | 236,192 | $33,010,194 | $38,126,113 | +$5,115,919 | +15.50% |
Frequently asked questions about GKOS
Who owns the most GKOS stock?
The largest holders of GKOS are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for GLAUKOS CORP (GKOS).
Is GKOS widely held by superinvestors?
Many widely followed stocks like GKOS appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly GKOS is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.