Glaukos Corp: which funds bought and sold

Institutions that bought and sold Glaukos shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 212 institutions that filed 13F reports for both quarters added to or opened positions in Glaukos, and 141 cut or closed them. Together they added a net 2.8M shares, +5.3% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 675K shares (+3.6%); index fund managers were net buyers of 930K shares (+4.6%). 65 opened a new position and 38 sold out entirely.

Bought, Q2 2026 212 institutions, 65 of them new holders Sold, Q2 2026 141 institutions, 38 of them sold out

Net change, all compared +2.8M shares (+5.3%)

Net change, active managers +675K shares (+3.6%), 37 bought, 31 sold

Buyers versus sellers

institutions compared, 397

212 bought 44 141 sold

Active managers and hedge funds 37 bought · 31 sold · +675K

Index fund managers 9 bought · 2 sold · +930K

Other institutions 166 bought · 108 sold · +1.2M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Fuller & Thaler Asset Management, Inc.	+530K New position	530K	$74.1M
Balyasny Asset Management L.P. Hedge fund	+492K New position	492K	$68.7M
Blackrock, Inc. Index funds	+450K +5.0%	9.5M	$1.3B
Summit Partners Public Asset Management, LLC	+447K New position	447K	$62.4M
Vaughan Nelson Investment Management, L.P. Active manager	+416K New position	416K	$58.2M
Millennium Management LLC Hedge fund	+407K +34.7%	1.6M	$221M
Price T Rowe Associates Inc Active manager	+343K +102.0%	680K	$95M
Lord, Abbett & Co. LLC	+300K +249.8%	420K	$58.8M
Marshall Wace, LLP Hedge fund	+281K +823.2%	315K	$44M
Wellington Management Group LLP Active manager	+279K +187.1%	428K	$59.8M
Anomaly Capital Management, LP Hedge fund	+276K New position	276K	$38.6M
Longaeva Partners L.P.	+236K New position	236K	$33M
Toronto Dominion Bank	+232K +642.3%	268K	$37.5M
Assenagon Asset Management S.A.	+207K +1965.1%	217K	$30.4M
UBS Group AG	+192K +49.7%	578K	$80.8M
Driehaus Capital Management LLC Active manager	+163K +33.3%	651K	$90.9M
Arrowstreet Capital, Limited Partnership Hedge fund	+155K New position	155K	$21.7M
Neuberger Berman Group LLC Active manager	+153K +103.4%	301K	$42M
Timessquare Capital Management, LLC	+145K New position	145K	$20.3M
Clearbridge Investments, LLC Active manager	+145K +50.7%	431K	$60.2M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Balyasny Asset Management L.P. Hedge fund	+492K New position	492K	$68.7M
Vaughan Nelson Investment Management, L.P. Active manager	+416K New position	416K	$58.2M
Millennium Management LLC Hedge fund	+407K +34.7%	1.6M	$221M
Price T Rowe Associates Inc Active manager	+343K +102.0%	680K	$95M
Marshall Wace, LLP Hedge fund	+281K +823.2%	315K	$44M
Wellington Management Group LLP Active manager	+279K +187.1%	428K	$59.8M
Anomaly Capital Management, LP Hedge fund	+276K New position	276K	$38.6M
Driehaus Capital Management LLC Active manager	+163K +33.3%	651K	$90.9M
Arrowstreet Capital, Limited Partnership Hedge fund	+155K New position	155K	$21.7M
Neuberger Berman Group LLC Active manager	+153K +103.4%	301K	$42M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Goldman Sachs Group Inc	−478K −34.8%	897K	$125M
William Blair Investment Management, LLC Active manager	−412K −38.4%	662K	$92.5M
Capital International Investors Active manager	−373K Sold out	0	—
Primecap Management Co Active manager	−330K −9.8%	3.0M	$425M
Artisan Partners Limited Partnership Active manager	−298K −49.1%	309K	$43.2M
Ameriprise Financial Inc	−296K −18.4%	1.3M	$184M
Pfm Health Sciences, LP Hedge fund	−216K Sold out	0	—
Invesco Ltd.	−207K −22.7%	707K	$98.8M
D. E. Shaw & Co., Inc. Hedge fund	−194K −77.2%	57K	$8M
Exoduspoint Capital Management, LP Hedge fund	−180K Sold out	0	—
Braidwell LP Hedge fund	−172K −22.5%	592K	$82.7M
Jpmorgan Chase & Co	−152K −46.8%	172K	$24.9M
Riverbridge Partners LLC Active manager	−151K −34.9%	282K	$39.4M
Alliancebernstein L.P. Active manager	−143K −10.2%	1.3M	$135M
Dimensional Fund Advisors LP	−112K −56.1%	87K	$12.2M
Qube Research & Technologies Ltd Hedge fund	−109K Sold out	0	—
Squarepoint Ops LLC Hedge fund	−94K −86.9%	14K	$2M
Morgan Stanley	−89K −13.1%	590K	$82.4M
Adage Capital Partners Gp, L.L.C. Hedge fund	−82K Sold out	0	—
Royal Bank Of Canada	−78K −38.4%	126K	$17.6M

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
William Blair Investment Management, LLC Active manager	−412K −38.4%	662K	$92.5M
Capital International Investors Active manager	−373K Sold out	0	—
Primecap Management Co Active manager	−330K −9.8%	3.0M	$425M
Artisan Partners Limited Partnership Active manager	−298K −49.1%	309K	$43.2M
Pfm Health Sciences, LP Hedge fund	−216K Sold out	0	—
D. E. Shaw & Co., Inc. Hedge fund	−194K −77.2%	57K	$8M
Exoduspoint Capital Management, LP Hedge fund	−180K Sold out	0	—
Braidwell LP Hedge fund	−172K −22.5%	592K	$82.7M
Riverbridge Partners LLC Active manager	−151K −34.9%	282K	$39.4M
Alliancebernstein L.P. Active manager	−143K −10.2%	1.3M	$135M

New positions

largest by value

Institution	Shares	Value June 30, 2026
Fuller & Thaler Asset Management, Inc.	530K	$74.1M
Balyasny Asset Management L.P.Hedge fund	492K	$68.7M
Summit Partners Public Asset Management, LLC	447K	$62.4M
Vaughan Nelson Investment Management, L.P.Active manager	416K	$58.2M
Anomaly Capital Management, LPHedge fund	276K	$38.6M
Longaeva Partners L.P.	236K	$33M
Arrowstreet Capital, Limited PartnershipHedge fund	155K	$21.7M
Timessquare Capital Management, LLC	145K	$20.3M
Cinctive Capital Management LPHedge fund	85K	$11.9M
Defilade Capital Management, L.P.	67K	$9.3M

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Capital International InvestorsActive manager	373K	$40.2M
Pfm Health Sciences, LPHedge fund	216K	$23.2M
Exoduspoint Capital Management, LPHedge fund	180K	$19.3M
Qube Research & Technologies LtdHedge fund	109K	$11.7M
Adage Capital Partners Gp, L.L.C.Hedge fund	82K	$8.8M
Trexquant Investment LPHedge fund	62K	$6.7M
Engineers Gate Manager LPHedge fund	47K	$5.1M
Pier Capital, LLC	29K	$3.2M
Landscape Capital Management, L.L.C.	29K	$3.1M
Havemeyer Place LP	17K	$1.8M

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 365
Ten largest holders: 51.9%
Index fund managers: 34.8%
Active managers and hedge funds: 31.8%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	37	31	13	13	+675K	+3.6%
Index fund managers	9	2	0	0	+930K	+4.6%
Other institutions	166	108	52	25	+1.2M	+8.7%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Glaukos.

Only managers that filed a holdings report for both quarters are compared (397 here). 10 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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