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 $6.14B 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 $978.62M in its March 31, 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 $1.52B, representing an estimated gain of +54.86% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 55% of the total disclosed GKOS value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Janus Henderson Group Plc, Primecap Management Co/Ca/, 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
334
Total Reported Value
$6.14B
Largest Holder
Blackrock, Inc.
Largest Position
$978.62M
Insider Transactions (90d)
16
Latest Filing Quarter
Q2 2026
New Institutional Positions
55
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% | 9,089,868 | $978,615,188 | $1,515,462,793 | +$536,847,605 | +54.86% | |
| Janus Henderson Group Plc | 0.29% | 5,348,395 | $575,844,474 | $891,684,414 | +$315,839,940 | +54.85% | |
| Primecap Management Co/Ca/ | 0.29% | 3,370,628 | $362,881,812 | $561,951,100 | +$199,069,288 | +54.86% | |
| Vanguard Portfolio Management Llc | 0.02% | 3,208,363 | $345,412,361 | $534,898,279 | +$189,485,918 | +54.86% | |
| Vanguard Capital Management Llc | 0.01% | 2,508,771 | $270,094,286 | $418,262,301 | +$148,168,015 | +54.86% | |
| State Street Corp | 0.01% | 2,182,617 | $234,980,546 | $363,885,906 | +$128,905,360 | +54.86% | |
| Ameriprise Financial Inc | 0.04% | 1,610,774 | $173,416,177 | $268,548,241 | +$95,132,064 | +54.86% | |
| Alliancebernstein L.P. | 0.05% | 1,397,556 | $157,798,048 | $233,000,536 | +$75,202,488 | +47.66% | |
| Citadel Advisors Llc | 0.11% | 1,446,926 | $155,776,053 | $241,231,503 | +$85,455,450 | +54.86% | |
| Holocene Advisors, Lp | 0.36% | 1,383,715 | $148,970,757 | $230,692,965 | +$81,722,208 | +54.86% | |
| Goldman Sachs Group Inc | 0.02% | 1,374,958 | $148,027,978 | $229,232,998 | +$81,205,020 | +54.86% | |
| Geode Capital Management, Llc | 0.01% | 1,356,453 | $146,063,660 | $226,147,844 | +$80,084,184 | +54.83% | |
| Millennium Management Llc | 0.09% | 1,173,696 | $126,360,111 | $195,678,597 | +$69,318,486 | +54.86% | |
| William Blair Investment Management, Llc | 0.38% | 1,073,819 | $115,607,354 | $179,027,104 | +$63,419,750 | +54.86% | |
| Capital World Investors | 0.01% | 989,060 | $106,482,200 | $164,896,083 | +$58,413,883 | +54.86% | |
| Invesco Ltd. | 0.02% | 914,188 | $98,421,481 | $152,413,423 | +$53,991,942 | +54.86% | |
| Braidwell Lp | 2.74% | 763,505 | $82,198,948 | $127,291,554 | +$45,092,606 | +54.86% | |
| Charles Schwab Investment Management Inc | 0.01% | 714,389 | $76,911,120 | $119,102,934 | +$42,191,814 | +54.86% | |
| Morgan Stanley | 0.00% | 678,825 | $73,082,425 | $113,173,704 | +$40,091,279 | +54.86% | |
| Bank Of America Corp | 0.01% | 657,432 | $70,779,103 | $109,607,063 | +$38,827,960 | +54.86% | |
| Nomura Asset Management International Inc. | 0.11% | 612,063 | $65,895,000 | $102,043,143 | +$36,148,143 | +54.86% | |
| Artisan Partners Limited Partnership | 0.11% | 607,462 | $65,399,359 | $101,276,065 | +$35,876,706 | +54.86% | |
| Northern Trust Corp | 0.01% | 576,209 | $62,034,662 | $96,065,564 | +$34,030,902 | +54.86% | |
| Vaughan Nelson Investment Management, L.P. | 0.51% | 416,231 | $58,172,444 | $69,394,032 | +$11,221,588 | +19.29% | |
| Driehaus Capital Management Llc | 0.39% | 487,912 | $52,528,606 | $81,344,689 | +$28,816,083 | +54.86% | |
| Jennison Associates Llc | 0.04% | 487,020 | $52,432,572 | $81,195,974 | +$28,763,402 | +54.86% | |
| Westfield Capital Management Co Lp | 0.22% | 482,219 | $51,915,698 | $80,395,552 | +$28,479,854 | +54.86% | |
| Loomis Sayles & Co L P | 0.06% | 421,240 | $45,350,699 | $70,229,133 | +$24,878,434 | +54.86% | |
| Allspring Global Investments Holdings, Llc | 0.07% | 393,831 | $44,361,124 | $65,659,504 | +$21,298,380 | +48.01% | |
| Nuveen, Llc | 0.01% | 398,329 | $42,884,100 | $66,409,411 | +$23,525,311 | +54.86% | |
| Vanguard Fiduciary Trust Co | 0.01% | 396,719 | $42,710,768 | $66,140,992 | +$23,430,224 | +54.86% | |
| Ubs Group Ag | 0.01% | 386,400 | $41,599,824 | $64,420,608 | +$22,820,784 | +54.86% | |
| Capital International Investors | 0.01% | 373,343 | $40,194,107 | $62,243,745 | +$22,049,638 | +54.86% | |
| Riverbridge Partners Llc | 1.10% | 282,089 | $39,424,774 | $47,029,878 | +$7,605,104 | +19.29% | |
| Bank Of New York Mellon Corp | 0.01% | 343,173 | $36,945,991 | $57,213,803 | +$20,267,812 | +54.86% | |
| Champlain Investment Partners, Llc | 0.44% | 319,027 | $34,346,447 | $53,188,181 | +$18,841,734 | +54.86% | |
| Fmr Llc | 0.00% | 303,266 | $32,649,619 | $50,560,508 | +$17,910,889 | +54.86% | |
| Clearbridge Investments, Llc | 0.03% | 286,051 | $30,796,209 | $47,690,423 | +$16,894,214 | +54.86% | |
| Principal Financial Group Inc | 0.02% | 280,737 | $30,224,146 | $46,804,473 | +$16,580,327 | +54.86% | |
| D. E. Shaw & Co., Inc. | 0.02% | 251,176 | $27,041,608 | $41,876,063 | +$14,834,455 | +54.86% | |
| Pfm Health Sciences, Lp | 2.44% | 215,685 | $23,220,647 | $35,959,003 | +$12,738,356 | +54.86% | |
| Public Sector Pension Investment Board | 0.07% | 205,484 | $22,122,407 | $34,258,292 | +$12,135,885 | +54.86% | |
| Royal Bank Of Canada | 0.00% | 204,153 | $21,979,000 | $34,036,388 | +$12,057,388 | +54.86% | |
| Dimensional Fund Advisors Lp | 0.00% | 199,084 | $21,426,391 | $33,191,284 | +$11,764,893 | +54.91% | |
| Keybank National Association/Oh | 0.07% | 145,077 | $20,275,962 | $24,187,237 | +$3,911,275 | +19.29% | |
| Exoduspoint Capital Management, Lp | 0.20% | 179,728 | $19,349,516 | $29,964,252 | +$10,614,736 | +54.86% | |
| Integral Health Asset Management, Llc | 1.00% | 175,000 | $18,840,500 | $29,176,000 | +$10,335,500 | +54.86% | |
| Sei Investments Co | 0.02% | 161,680 | $17,406,599 | $26,955,290 | +$9,548,691 | +54.86% | |
| Legal & General Group Plc | 0.00% | 160,542 | $17,283,951 | $26,765,562 | +$9,481,611 | +54.86% | |
| Rhumbline Advisers | 0.01% | 154,176 | $16,598,551 | $25,704,223 | +$9,105,672 | +54.86% |
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.