What does CUSIP 377322102 represent in this 13F holders report?

CUSIP 377322102 is the security identifier for GKOS - GLAUKOS Corp - Common Stock used to aggregate holder disclosures.

How many institutions held GKOS - GLAUKOS Corp - Common Stock in Q1 2018?

127 institutional investors reported GKOS - GLAUKOS Corp - Common Stock for Q1 2018. Use the holders table for investor-level position and value details.

GLAUKOS Corp - Common Stock (GKOS)

CUSIP: 377322102

Q1 2018 13F Holders as of 31 Mar 2018

Type / Class: Equity / Common Stock
Shares outstanding: 56,958,245
Total 13F shares: 37,508,465
Share change: +2,620,779
Total reported value: $1,156,377,946
Put/Call ratio: 65%
Price per share: $30.83
Number of holders: 127
Value change: +$88,182,767
Number of buys: 66
Number of sells: 64

Quarterly Holders Quick Answers

What is CUSIP 377322102?
CUSIP 377322102 identifies GKOS - GLAUKOS Corp - Common Stock in SEC institutional holdings data.

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Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2018
Previous quarter: Q4 2017

Recent filing periods for CUSIP 377322102:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of GKOS - GLAUKOS Corp - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
JANUS HENDERSON GROUP PLC	13F	Company	9%	5,098,591	$130,779,000	—	31 Dec 2017	13F
DEERFIELD MANAGEMENT COMPANY, L.P.	13F	Company	5.9%	3,343,045	$85,749,000	—	31 Dec 2017	13F
Capital World Investors	13F	Company	4.8%	2,740,000	$70,281,000	—	31 Dec 2017	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	4.3%	2,469,338	$63,339,000	—	31 Dec 2017	13F
VANGUARD GROUP INC	13F	Company	4.2%	2,388,105	$61,255,000	—	31 Dec 2017	13F
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	13F	Company	3.5%	1,979,960	$50,786,000	—	31 Dec 2017	13F
BlackRock Finance, Inc.	13F	Company	3.4%	1,957,114	$50,200,000	—	31 Dec 2017	13F
GILDER GAGNON HOWE & CO LLC	13F	Company	2.4%	1,357,647	$34,824,000	—	31 Dec 2017	13F
INTERWEST VENTURE MANAGEMENT CO	13F	Company	1.8%	1,018,362	$26,121,000	—	31 Dec 2017	13F
BAILLIE GIFFORD & CO	13F	Company	1.7%	970,279	$24,888,000	—	31 Dec 2017	13F
ORBIMED ADVISORS LLC	13F	Company	1.5%	836,500	$21,456,000	—	31 Dec 2017	13F
Meritech Capital Associates III L.L.C.	13F	Company	1.4%	822,307	$21,092,000	—	31 Dec 2017	13F
STATE STREET CORP	13F	Company	1.1%	650,590	$16,684,000	—	31 Dec 2017	13F
PEREGRINE CAPITAL MANAGEMENT LLC	13F	Company	1.1%	622,144	$15,958,000	—	31 Dec 2017	13F
Rhenman & Partners Asset Management AB	13F	Company	1.1%	608,400	$15,605,000	—	31 Dec 2017	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.84%	479,100	$12,289,000	—	31 Dec 2017	13F
Artisan Partners Limited Partnership	13F	Company	0.79%	452,145	$11,598,000	—	31 Dec 2017	13F
FEDERATED HERMES, INC.	13F	Company	0.79%	450,054	$11,544,000	—	31 Dec 2017	13F
JENNISON ASSOCIATES LLC	13F	Company	0.72%	412,919	$10,591,000	—	31 Dec 2017	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.71%	405,382	$10,398,000	—	31 Dec 2017	13F
NORTHERN TRUST CORP	13F	Company	0.64%	366,574	$9,402,000	—	31 Dec 2017	13F
Sandhill Capital Partners LLC	13F	Company	0.6%	340,128	$8,724,000	—	31 Dec 2017	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.58%	331,743	$8,509,000	—	31 Dec 2017	13F
C WorldWide Group Holding A/S	13F	Company	0.52%	293,360	$7,525,000	—	31 Dec 2017	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.48%	275,937	$7,077,000	—	31 Dec 2017	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	0.46%	262,633	$6,737,000	—	31 Dec 2017	13F
Mitsubishi UFJ Trust & Banking Corp	13F	Company	0.45%	256,700	$6,584,000	—	31 Dec 2017	13F
DEUTSCHE BANK AG\	13F	Company	0.39%	222,679	$5,710,000	—	31 Dec 2017	13F
Handelsbanken Fonder AB	13F	Company	0.33%	188,000	$4,822,000	—	31 Dec 2017	13F
AMUNDI ASSET MANAGEMENT US, INC.	13F	Company	0.29%	165,300	$4,240,000	—	31 Dec 2017	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.28%	160,064	$4,106,000	—	31 Dec 2017	13F
Novo Holdings A/S	13F	Company	0.27%	156,429	$4,012,000	—	31 Dec 2017	13F
GSA CAPITAL PARTNERS LLP	13F	Company	0.25%	144,168	$3,698,000	—	31 Dec 2017	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.24%	139,365	$3,575,000	—	31 Dec 2017	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	0.21%	121,222	$3,109,000	—	31 Dec 2017	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	0.21%	118,426	$3,038,000	—	31 Dec 2017	13F
Bank of New York Mellon Corp	13F	Company	0.21%	118,215	$3,032,000	—	31 Dec 2017	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.16%	91,788	$2,356,000	—	31 Dec 2017	13F
BLAIR WILLIAM & CO/IL	13F	Company	0.16%	90,541	$2,322,000	—	31 Dec 2017	13F
LORD, ABBETT & CO. LLC	13F	Company	0.15%	85,663	$2,197,000	—	31 Dec 2017	13F
PRIMECAP MANAGEMENT CO/CA/	13F	Company	0.14%	82,210	$2,109,000	—	31 Dec 2017	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	0.12%	68,970	$1,769,000	—	31 Dec 2017	13F
MORGAN STANLEY	13F	Company	0.11%	64,940	$1,665,000	—	31 Dec 2017	13F
Taylor Frigon Capital Management LLC	13F	Company	0.11%	60,157	$1,543,000	—	31 Dec 2017	13F
Investeringsforvaltning Handelsinvest	13F	Individual	0.11%	60,000	$1,539,000	—	31 Dec 2017	13F
Engineers Gate Manager LP	13F	Company	0.1%	59,725	$1,532,000	—	31 Dec 2017	13F
MENTA CAPITAL LLC	13F	Company	0.1%	58,934	$1,512,000	—	31 Dec 2017	13F
Tekla Capital Management LLC	13F	Company	0.1%	55,079	$1,413,000	—	31 Dec 2017	13F
OXFORD ASSET MANAGEMENT LLP	13F	Company	0.1%	54,277	$1,392,000	—	31 Dec 2017	13F
TEACHERS ADVISORS, LLC	13F	Company	0.09%	52,569	$1,348,000	—	31 Dec 2017	13F

Institutional Holders of GLAUKOS Corp - Common Stock (GKOS) as of Q1 2018

As of 31 Mar 2018, GLAUKOS Corp - Common Stock (GKOS) was held by 127 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 37,508,465 shares. The largest 10 holders included JANUS HENDERSON GROUP PLC, WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC, Capital World Investors, PRICE T ROWE ASSOCIATES INC /MD/, VANGUARD GROUP INC, BlackRock Inc., DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C), GILDER GAGNON HOWE & CO LLC, BAILLIE GIFFORD & CO, and INTERWEST VENTURE MANAGEMENT CO. This page lists 127 institutional shareholders reporting positions in this security for the Q1 2018 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2018 vs Q4 2017 Across Filers

Q4 2017 holders

133

Q1 2018 holders

127

Holder diff

-6

Investor	Q4 2017 Shares	Q1 2018 Shares	Share Diff	Share Chg %	Q4 2017 Value $	Q1 2018 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.