Glaukos Ownership | Who Owns Glaukos?

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Glaukos Ownership Summary

Glaukos is owned by 4.53% institutional investors, 3.27% insiders, and 92.20% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 15.98% of GKOS shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 5.81% of its assets in Glaukos shares.

GKOS Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Glaukos	4.53%	3.27%	92.20%
Sector	Healthcare Stocks	279.19%	10.62%	-189.81%
Industry	Medical Device Stocks	32.77%	10.51%	56.72%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	8.80M	15.98%	$1.32B
Blackrock	8.04M	15.85%	$951.27M
Fmr	6.11M	11.10%	$916.40M
Vanguard group	5.97M	10.86%	$895.89M
Wellington management group llp	2.16M	3.92%	$323.80M
State street	2.06M	3.75%	$309.39M
Ameriprise financial	1.93M	3.51%	$289.51M
Invesco	1.46M	2.65%	$218.71M
Brown capital management	1.35M	2.45%	$202.10M
Lord, abbett	1.31M	2.38%	$196.35M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Brown capital management	1.35M	4.68%	$202.10M
Atika capital management	239.50K	3.81%	$35.91M
First turn management	136.24K	2.70%	$13.41M
Avidity partners management lp	170.00K	2.50%	$25.49M
Braidwell lp	624.43K	2.16%	$61.46M
Summit partners public asset management	730.01K	2.09%	$109.46M
Taylor frigon capital management	25.01K	1.90%	$3.75M
Eversept partners, lp	158.96K	1.59%	$15.64M
Gilder gagnon howe	825.28K	1.33%	$123.74M
Efg asset management (north america)	60.59K	1.24%	$9.10M

Top Buyers

Holder	Shares	% Assets	Change
William blair investment management	809.59K	0.30%	809.59K
Westfield capital management co lp	807.15K	0.53%	804.61K
Alliancebernstein	816.15K	0.04%	755.03K
Norges bank	563.49K	0.01%	563.49K
Braidwell lp	624.43K	2.16%	335.56K

Top Sellers

Holder	Shares	% Assets	Change
1832 asset management	-	-	-723.30K
Fmr	6.11M	0.05%	-472.73K
Artisan partners limited partnership	471.85K	0.11%	-323.40K
Millennium management	78.23K	0.00%	-314.99K
Fred alger management	764.96K	0.55%	-312.02K

New Positions

Holder	Shares	% Assets	Change	Value
William blair investment management	809.59K	0.30%	809.59K	$121.39M
Norges bank	563.49K	0.01%	563.49K	$84.49M
Holocene advisors, lp	309.47K	0.15%	309.47K	$46.40M
Ra capital management	190.26K	0.31%	190.26K	$18.72M
Eversept partners, lp	158.96K	1.59%	158.96K	$15.64M

Sold Out

Holder	Change
Natixis	-1.00
National bank of canada /fi/	-2.00
Mendota financial group	-4.00
Capital performance advisors llp	-5.00
Hollencrest capital management	-5.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2025	16	-95.27%	2,565,025	-95.51%	4	0.04%	11	-93.57%	1	-99.07%
Dec 31, 2024	188	-42.68%	29,346,043	-46.02%	53	0.55%	100	-45.05%	59	-31.40%
Sep 30, 2024	326	10.88%	54,359,548	0.58%	98	0.87%	180	9.09%	86	7.50%
Jun 30, 2024	294	9.70%	54,047,418	5.23%	106	0.99%	165	47.32%	80	-27.27%
Mar 31, 2024	268	-	51,362,152	0.85%	103	0.95%	112	-17.04%	110	39.24%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Small-Cap ETF	3.32M	5.81%	-1.69K
Vanguard Total Stock Mkt Idx Inv	1.72M	3.01%	13.90K
Vanguard US Total Market Shares ETF	1.66M	2.93%	135.33K
Vanguard Small Cap Index	1.35M	2.36%	7.66K
iShares Russell 2000 ETF	1.26M	2.20%	615.00
Vanguard Health Care Inv	1.02M	1.79%	173.53K
Fidelity Select Health Care	860.00K	1.51%	240.00K
Vanguard Institutional Extnd Mkt Idx Tr	851.87K	1.49%	3.73K
PRIMECAP Odyssey Aggressive Growth	801.93K	1.40%	-11.29K
Fidelity Select Medical Tech and Devcs	800.00K	1.40%	200.00K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Mar 25, 2025	Thurman Alex R.	SVP & CHIEF FINANCIAL OFFICER	Sell	$3.35K
Mar 25, 2025	Thurman Alex R.	SVP & CHIEF FINANCIAL OFFICER	Sell	$46.20K
Mar 25, 2025	Thurman Alex R.	SVP & CHIEF FINANCIAL OFFICER	Sell	$112.85K
Feb 26, 2025	Foley Mark J	-	Sell	$2.50M
Feb 14, 2025	Navratil Tomas	CHIEF DEVELOPMENT OFFICER	Sell	$502.63K

Insider Transactions Trends

Date	Buy	Sell
2025 Q2	-	-
2025 Q1	-	5
2024 Q4	-	5
2024 Q3	-	10
2024 Q2	-	39

GKOS Ownership FAQ

Who Owns Glaukos?

Glaukos shareholders are primarily institutional investors at 4.53%, followed by 3.27% insiders and 92.20% retail investors. The average institutional ownership in Glaukos's industry, Medical Device Stocks, is 32.77%, which Glaukos falls below.

Who owns the most shares of Glaukos?

Glaukos’s largest shareholders are Blackrock funding, inc. /de (8.8M shares, 15.98%), Blackrock (8.04M shares, 15.85%), and Fmr (6.11M shares, 11.10%). Together, they hold 42.94% of Glaukos’s total shares outstanding.

Does Blackrock own Glaukos?

Yes, BlackRock owns 15.85% of Glaukos, totaling 8.04M shares as of Jun 2024. This represents 0.02% of BlackRock's total assets, with a market value of 951.27M$. In the last quarter, BlackRock increased its holdings by 140.78K shares, a 1.78% change.

Who is Glaukos’s biggest shareholder by percentage of total assets invested?

Brown capital management is Glaukos’s biggest shareholder by percentage of total assets invested, with 4.68% of its assets in 1.35M Glaukos shares, valued at 202.1M$.

Who is the top mutual fund holder of Glaukos shares?

iShares Core S&P Small-Cap ETF is the top mutual fund holder of Glaukos shares, with 5.81% of its total shares outstanding invested in 3.32M Glaukos shares.

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