Glaukos Ownership | Who Owns Glaukos?

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Glaukos Ownership Summary

Glaukos is owned by 105.78% institutional investors, 3.61% insiders. Blackrock funding, inc. /de is the largest institutional shareholder, holding 16.44% of GKOS shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 6.06% of its assets in Glaukos shares.

GKOS Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Glaukos	105.78%	3.61%	-9.39%
Sector	Healthcare Stocks	50.49%	12.37%	37.14%
Industry	Medical Device Stocks	49.26%	12.51%	38.23%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	9.54M	16.44%	$1.33B
Blackrock	8.04M	15.85%	$951.27M
Vanguard group	6.02M	10.55%	$679.77M
Janus henderson group	5.35M	9.30%	$575.84M
Primecap management co/ca/	3.04M	5.24%	$424.97M
Vanguard capital management	2.55M	4.40%	$356.55M
State street	2.32M	3.99%	$323.67M
Millennium management	1.58M	2.72%	$220.96M
Holocene advisors, lp	1.51M	2.61%	$211.73M
Geode capital management	1.46M	2.52%	$204.57M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Brown capital management	167.92K	4.69%	$23.47M
Iron triangle partners lp	342.80K	3.98%	$27.96M
Braidwell lp	591.93K	3.06%	$82.73M
Exome asset management	19.86K	1.71%	$2.78M
Rhenman & partners asset management ab	119.00K	1.57%	$16.63M
Taylor frigon capital management	23.39K	1.53%	$3.27M
Anomaly capital management, lp	276.00K	1.47%	$38.57M
Riverbridge partners	282.09K	1.10%	$39.42M
Summit partners public asset management	446.55K	1.10%	$62.41M
Champlain investment partners	275.17K	0.99%	$38.46M

Top Buyers

Holder	Shares	% Assets	Change
Janus henderson group	5.35M	0.29%	2.33M
Sixth street partners management company	752.64K	0.01%	752.64K
Fuller & thaler asset management	529.92K	0.20%	529.92K
Norges bank	498.50K	0.01%	498.50K
Balyasny asset management	491.64K	0.09%	491.64K

Top Sellers

Holder	Shares	% Assets	Change
1832 asset management	-	-	-723.30K
Macquarie group	-	-	-600.23K
Goldman sachs group	897.02K	0.01%	-477.94K
William blair investment management	661.67K	0.28%	-412.14K
Capital investors	-	-	-373.34K

New Positions

Holder	Shares	% Assets	Change	Value
Sixth street partners management company	752.64K	0.01%	752.64K	$105.19M
Fuller & thaler asset management	529.92K	0.20%	529.92K	$74.06M
Norges bank	498.50K	0.01%	498.50K	$69.67M
Summit partners public asset management	446.55K	1.10%	446.55K	$62.41M
Vaughan nelson investment management	416.23K	0.51%	416.23K	$58.17M

Sold Out

Holder	Change
Dunhill financial	-1.00
Natixis	-1.00
Bryn mawr trust	-1.00
National bank of canada /fi/	-2.00
True wealth design	-2.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2026	375	8.07%	61,376,457	5.85%	105	1.04%	215	33.54%	103	-20.77%
Mar 31, 2026	340	-	57,121,191	0.08%	99	1.00%	157	-20.71%	129	25.24%
Dec 31, 2025	177	-45.54%	31,204,201	-44.20%	54	0.57%	102	-37.80%	48	-58.97%
Sep 30, 2025	162	-47.57%	28,643,529	-53.09%	50	0.44%	73	-60.54%	68	-21.84%
Jun 30, 2025	307	-8.36%	60,994,218	7.14%	107	1.06%	183	7.02%	87	-22.32%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Small-Cap ETF	3.58M	6.06%	-1.40K
Vanguard Morn Total Stk Mkt Idx Investor	1.77M	3.02%	19.10K
Vanguard Total Stock Mkt Idx Inv	1.77M	3.02%	19.10K
Vanguard MStar Total Stk Mkt Idx Invest	1.78M	3.02%	5.41K
Vanguard US Total Market Shares ETF	1.66M	2.93%	135.33K
Vanguard Capital Opportunity Inv	1.48M	2.51%	-220.75K
iShares Russell 2000 ETF	1.46M	2.47%	-25.92K
Vanguard Small Cap Index	1.28M	2.18%	3.25K
Janus Henderson US SMID Cap Growth	1.06M	1.79%	17.27K
Janus Henderson US SMID Cap Growth Inst	1.06M	1.79%	1.05M

Recent Insider Transactions

Date	Name	Role	Activity	Value
Aug 19, 2026	Kliman Gilbert H	-	Sell	$475.00K
Aug 11, 2026	Gilliam Joseph E	PRESIDENT & COO	Sell	$5.00M
Aug 11, 2026	Gilliam Joseph E	PRESIDENT & COO	Sell	$5.78M
Aug 07, 2026	Thurman Alex R.	SVP & CHIEF FINANCIAL OFFICER	Sell	$3.60M
Jul 31, 2026	WEN LEANA	-	Sell	$88.01K

Insider Transactions Trends

Date	Buy	Sell
2026 Q3	-	9
2026 Q2	-	10
2026 Q1	-	21
2025 Q4	-	3
2025 Q3	-	5

GKOS Ownership FAQ

Who Owns Glaukos?

Glaukos shareholders are primarily institutional investors at 105.78%, followed by 3.61% insiders and -9.39% retail investors. The average institutional ownership in Glaukos's industry, Medical Device Stocks, is 49.26%, which Glaukos exceeds.

Who owns the most shares of Glaukos?

Glaukos’s largest shareholders are Blackrock funding, inc. /de (9.54M shares, 16.44%), Blackrock (8.04M shares, 15.85%), and Vanguard group (6.02M shares, 10.55%). Together, they hold 42.84% 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 4.69% of its assets in 167.92K Glaukos shares, valued at 23.47M$.

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 6.06% of its total shares outstanding invested in 3.58M Glaukos shares.

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