Company · Ownership research

GLAUKOS Corp GKOS

CIK 0001192448 · CUSIP 377322102

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 377322102 (GKOS), not CUSIP 377322952 (GKOS), CUSIP 377322902 (GKOS), and does not merge CUSIPs.

This page lists the top 20 of 367 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock, Inc. CIK 2012383 · View history	$1.33B 9,540,056 shares	0.02%	+450.03K(+5.00%)Added	SEC filing ↗ Aug 7, 2026	▾
02	Jupiter Topco LLC CIK 2146052 · View history	$679.61M 4,862,894 shares	0.28%	—	SEC filing ↗ Aug 14, 2026	▾
03	VANGUARD PORTFOLIO MANAGEMENT LLC CIK 2100121 · View history	$464.26M 3,321,839 shares	0.02%	+113.48K(+3.50%)Added	SEC filing ↗ Aug 13, 2026	▾
04	PRIMECAP MANAGEMENT CO/CA/ CIK 763212 · View history	$424.97M 3,040,705 shares	0.25%	-329.92K(-9.80%)Reduced	SEC filing ↗ Aug 14, 2026	▾
05	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · View history	$356.55M 2,551,132 shares	0.01%	+42.36K(+1.70%)Added	SEC filing ↗ Aug 13, 2026	▾
06	STATE STREET CORP CIK 93751 · View history	$323.67M 2,315,568 shares	0.01%	+132.95K(+6.10%)Added	SEC filing ↗ Aug 7, 2026	▾
07	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$220.96M 1,581,016 shares	0.15%	+407.32K(+34.70%)Added	SEC filing ↗ Aug 14, 2026	▾
08	Holocene Advisors, LP CIK 1700574 · View history	$211.73M 1,514,931 shares	0.48%	+131.22K(+9.50%)Added	SEC filing ↗ Aug 14, 2026	▾
09	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$204.57M 1,463,448 shares	0.01%	+107.00K(+7.90%)Added	SEC filing ↗ Aug 12, 2026	▾
10	CITADEL ADVISORS LLC CIK 1423053 · Amended · View history	$194.27M 1,390,017 shares	0.11%	-56.91K(-3.90%)Reduced	SEC filing ↗ Sep 2, 2026	▾
11	AMERIPRISE FINANCIAL INC CIK 820027 · View history	$183.79M 1,315,057 shares	0.04%	-295.72K(-18.40%)Reduced	SEC filing ↗ Aug 14, 2026	▾
12	Capital World Investors CIK 1422849 · View history	$141.99M 1,015,943 shares	0.02%	+26.88K(+2.70%)Added	SEC filing ↗ Aug 12, 2026	▾
13	ALLIANCEBERNSTEIN L.P. CIK 1109448 · View history	$135.08M 1,254,703 shares	0.04%	-142.85K(-10.20%)Reduced	SEC filing ↗ Aug 14, 2026	▾
14	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$125.37M 897,021 shares	0.01%	-477.94K(-34.80%)Reduced	SEC filing ↗ Aug 14, 2026	▾
15	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$105.19M 752,642 shares	0.01%	+38.25K(+5.40%)Added	SEC filing ↗ Aug 14, 2026	▾
16	Invesco Ltd. CIK 914208 · View history	$98.79M 706,877 shares	0.01%	-207.31K(-22.70%)Reduced	SEC filing ↗ Aug 14, 2026	▾
17	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$94.99M 679,632 shares	0.01%	+343.21K(+102.00%)Added	SEC filing ↗ Aug 14, 2026	▾
18	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC CIK 1644956 · View history	$92.48M 661,675 shares	0.28%	-412.14K(-38.40%)Reduced	SEC filing ↗ Aug 12, 2026	▾
19	Driehaus Capital Management LLC CIK 938206 · View history	$90.92M 650,571 shares	0.53%	+162.66K(+33.30%)Added	SEC filing ↗ Aug 14, 2026	▾
20	NOMURA ASSET MANAGEMENT INTERNATIONAL INC. CIK 921739 · View history	$90.48M 647,428 shares	0.14%	+35.37K(+5.80%)Added	SEC filing ↗ Aug 14, 2026	▾

Showing 20 / 367 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

367

Cancelled or null records excluded

Disclosed shares

60,687,514

Not deduplicated across managers

Disclosed value

$8.44B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

GLAUKOS Corp · Q2 2026

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.