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 Q4 2019?

155 institutional investors reported GKOS - GLAUKOS Corp - Common Stock for Q4 2019. Use the holders table for investor-level position and value details.

GLAUKOS Corp - Common Stock (GKOS)

CUSIP: 377322102

Q4 2019 13F Holders as of 31 Dec 2019

Type / Class: Equity / Common Stock
Shares outstanding: 58,127,160
Total 13F shares: 44,170,808
Share change: +4,351,299
Total reported value: $2,405,943,700
Put/Call ratio: 201%
Price per share: $54.47
Number of holders: 155
Value change: +$233,256,634
Number of buys: 98
Number of sells: 52

Quarterly Holders Quick Answers

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

Need full ownership history?
Open the full security ownership history page.

Next holder-history checks

These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.

Back to full security ownership history for the broader multi-quarter picture.
Latest 13F filings for newly reported positions across managers.
Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
SEC investors directory for manager drilldown.

Explore More Reporting Periods

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

Newer quarter: Q1 2020
Previous quarter: Q3 2019

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
BROWN CAPITAL MANAGEMENT LLC	13F	Company	7.9%	4,565,244	$285,373,000	—	30 Sep 2019	13F
VANGUARD GROUP INC	13F	Company	5.5%	3,213,372	$200,868,000	—	30 Sep 2019	13F
BAILLIE GIFFORD & CO	13F	Company	4.9%	2,826,590	$176,691,000	—	30 Sep 2019	13F
BlackRock Finance, Inc.	13F	Company	4.6%	2,696,245	$168,541,000	—	30 Sep 2019	13F
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	13F	Company	4.1%	2,393,059	$149,590,000	—	30 Sep 2019	13F
FRED ALGER MANAGEMENT, LLC	13F	Company	3.6%	2,102,191	$131,408,000	—	30 Sep 2019	13F
JANUS HENDERSON GROUP PLC	13F	Company	2.6%	1,516,146	$94,774,000	—	30 Sep 2019	13F
GILDER GAGNON HOWE & CO LLC	13F	Company	2.5%	1,438,652	$89,930,000	—	30 Sep 2019	13F
WADDELL & REED FINANCIAL INC	13F	Company	2.1%	1,228,817	$76,813,000	—	30 Sep 2019	13F
Capital World Investors	13F	Company	2%	1,150,322	$71,907,000	—	30 Sep 2019	13F
Artisan Partners Limited Partnership	13F	Company	1.9%	1,080,546	$67,545,000	—	30 Sep 2019	13F
FMR LLC	13F	Company	1.7%	971,042	$60,700,000	—	30 Sep 2019	13F
LORD, ABBETT & CO. LLC	13F	Company	1.5%	881,213	$55,085,000	—	30 Sep 2019	13F
STATE STREET CORP	13F	Company	1.5%	859,037	$53,698,000	—	30 Sep 2019	13F
Invesco Ltd.	13F	Company	1.5%	848,804	$53,059,000	—	30 Sep 2019	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	1.4%	819,629	$51,235,000	—	30 Sep 2019	13F
Clearbridge Investments, LLC	13F	Company	1.2%	712,330	$44,528,000	—	30 Sep 2019	13F
FEDERATED HERMES, INC.	13F	Company	1.2%	683,470	$42,724,000	—	30 Sep 2019	13F
NORGES BANK	13F	Company	1.1%	652,313	$40,776,000	—	30 Sep 2019	13F
NORTHERN TRUST CORP	13F	Company	0.88%	511,737	$31,988,000	—	30 Sep 2019	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.78%	451,881	$28,247,000	—	30 Sep 2019	13F
Sandhill Capital Partners LLC	13F	Company	0.76%	444,253	$27,770,000	—	30 Sep 2019	13F
VICTORY CAPITAL MANAGEMENT INC	13F	Company	0.76%	440,905	$27,561,000	—	30 Sep 2019	13F
CITADEL ADVISORS LLC	13F	Company	0.72%	421,087	$26,322,000	—	30 Sep 2019	13F
Bellevue Group AG	13F	Company	0.69%	402,148	$25,138,000	—	30 Sep 2019	13F
PEREGRINE CAPITAL MANAGEMENT LLC	13F	Company	0.6%	347,645	$21,731,000	—	30 Sep 2019	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.58%	337,906	$21,124,000	—	30 Sep 2019	13F
JENNISON ASSOCIATES LLC	13F	Company	0.56%	326,771	$20,426,000	—	30 Sep 2019	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.49%	286,774	$17,926,000	—	30 Sep 2019	13F
PRIMECAP MANAGEMENT CO/CA/	13F	Company	0.49%	282,300	$17,647,000	—	30 Sep 2019	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.46%	264,800	$16,552,000	—	30 Sep 2019	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.45%	264,100	$16,509,000	—	30 Sep 2019	13F
AMUNDI ASSET MANAGEMENT US, INC.	13F	Company	0.44%	255,494	$15,971,000	—	30 Sep 2019	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.43%	247,144	$15,449,000	—	30 Sep 2019	13F
Rhenman & Partners Asset Management AB	13F	Company	0.39%	229,600	$14,352,000	—	30 Sep 2019	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.38%	219,278	$13,708,000	—	30 Sep 2019	13F
Granite Investment Partners, LLC	13F	Company	0.36%	208,927	$13,060,000	—	30 Sep 2019	13F
Mitsubishi UFJ Trust & Banking Corp	13F	Company	0.35%	204,850	$12,805,000	—	30 Sep 2019	13F
STATE OF WISCONSIN INVESTMENT BOARD	13F	Company	0.33%	192,400	$12,027,000	—	30 Sep 2019	13F
Nuveen Asset Management, LLC	13F	Company	0.31%	177,534	$11,098,000	—	30 Sep 2019	13F
C WorldWide Group Holding A/S	13F	Company	0.29%	167,212	$10,452,000	—	30 Sep 2019	13F
Bank of New York Mellon Corp	13F	Company	0.28%	162,413	$10,153,000	—	30 Sep 2019	13F
BALYASNY ASSET MANAGEMENT L.P.	13F	Company	0.27%	158,827	$9,928,000	—	30 Sep 2019	13F
WASATCH ADVISORS LP	13F	Company	0.27%	158,731	$9,922,000	—	30 Sep 2019	13F
Man Group plc	13F	Company	0.2%	117,873	$7,368,000	—	30 Sep 2019	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.13%	74,338	$4,647,000	—	30 Sep 2019	13F
BLAIR WILLIAM & CO/IL	13F	Company	0.12%	72,190	$4,513,000	—	30 Sep 2019	13F
FIRST TRUST ADVISORS LP	13F	Company	0.12%	71,951	$4,498,000	—	30 Sep 2019	13F
SILVERCREST ASSET MANAGEMENT GROUP LLC	13F	Company	0.12%	71,553	$4,473,000	—	30 Sep 2019	13F
Swiss National Bank	13F	Company	0.11%	65,000	$4,063,000	—	30 Sep 2019	13F

Institutional Holders of GLAUKOS Corp - Common Stock (GKOS) as of Q4 2019

As of 31 Dec 2019, GLAUKOS Corp - Common Stock (GKOS) was held by 155 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 44,170,808 shares. The largest 10 holders included BROWN CAPITAL MANAGEMENT LLC, VANGUARD GROUP INC, BAILLIE GIFFORD & CO, BlackRock Inc., FRED ALGER MANAGEMENT, LLC, WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC, JANUS HENDERSON GROUP PLC, ORBIMED ADVISORS LLC, GILDER GAGNON HOWE & CO LLC, and Artisan Partners Limited Partnership. This page lists 155 institutional shareholders reporting positions in this security for the Q4 2019 filing period.

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

Compare Q4 2019 vs Q3 2019 Across Filers

Q3 2019 holders

145

Q4 2019 holders

155

Holder diff

Investor	Q3 2019 Shares	Q4 2019 Shares	Share Diff	Share Chg %	Q3 2019 Value $	Q4 2019 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.