Primecap Management’s Glaukos GKOS Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $425M | Sell |
3,040,705
-329,923
| -10% | -$41.7M | 0.25% | 71 |
|
|
2026
Q1 | $363M | Sell |
3,370,628
-6,300
| -0.2% | -$709K | 0.29% | 77 |
|
|
2025
Q4 | $381M | Buy |
3,376,928
+1,123,140
| +50% | +$107M | 0.29% | 70 |
|
|
2025
Q3 | $184M | Buy |
2,253,788
+425,790
| +23% | +$39.1M | 0.14% | 115 |
|
|
2025
Q2 | $189M | Buy |
1,827,998
+609,523
| +50% | +$57.2M | 0.15% | 115 |
|
|
2025
Q1 | $120M | Buy |
1,218,475
+4,150
| +0.3% | +$554K | 0.1% | 130 |
|
|
2024
Q4 | $182M | Sell |
1,214,325
-30,860
| -2% | -$4.25M | 0.14% | 110 |
|
|
2024
Q3 | $162M | Buy |
1,245,185
+24,370
| +2% | +$3.03M | 0.12% | 113 |
|
|
2024
Q2 | $144M | Buy |
1,220,815
+372,180
| +44% | +$39.5M | 0.1% | 116 |
|
|
2024
Q1 | $80M | Buy |
848,635
+58,600
| +7% | +$5.24M | 0.06% | 153 |
|
|
2023
Q4 | $62.8M | Buy |
790,035
+151,415
| +24% | +$10.3M | 0.05% | 168 |
|
|
2023
Q3 | $48.1M | Buy |
638,620
+20,120
| +3% | +$1.5M | 0.04% | 180 |
|
|
2023
Q2 | $44M | Buy |
618,500
+10,300
| +2% | +$591K | 0.04% | 187 |
|
|
2023
Q1 | $30.5M | Buy |
608,200
+57,720
| +10% | +$2.8M | 0.03% | 201 |
|
|
2022
Q4 | $24M | Buy |
550,480
+12,590
| +2% | +$621K | 0.02% | 208 |
|
|
2022
Q3 | $28.6M | Sell |
537,890
-3,480
| -0.6% | -$180K | 0.03% | 196 |
|
|
2022
Q2 | $24.6M | Buy |
541,370
+8,870
| +2% | +$421K | 0.02% | 207 |
|
|
2022
Q1 | $30.8M | Sell |
532,500
-400
| -0.1% | -$21.2K | 0.02% | 211 |
|
|
2021
Q4 | $23.7M | Buy |
532,900
+32,700
| +7% | +$1.51M | 0.02% | 233 |
|
|
2021
Q3 | $24.1M | Buy |
500,200
+55,700
| +13% | +$3.09M | 0.02% | 231 |
|
|
2021
Q2 | $37.7M | Buy |
444,500
+8,200
| +2% | +$673K | 0.03% | 209 |
|
|
2021
Q1 | $36.6M | Buy |
436,300
+5,100
| +1% | +$448K | 0.03% | 207 |
|
|
2020
Q4 | $32.5M | Buy |
431,200
+23,500
| +6% | +$1.49M | 0.02% | 208 |
|
|
2020
Q3 | $20.2M | Buy |
407,700
+6,070
| +2% | +$267K | 0.02% | 218 |
|
|
2020
Q2 | $15.4M | Buy |
401,630
+61,930
| +18% | +$2.31M | 0.01% | 216 |
|
|
2020
Q1 | $10.5M | Buy |
339,700
+21,500
| +7% | +$1.1M | 0.01% | 216 |
|
|
2019
Q4 | $17.3M | Buy |
318,200
+35,900
| +13% | +$2.18M | 0.01% | 223 |
|
|
2019
Q3 | $17.6M | Buy |
282,300
+9,600
| +4% | +$676K | 0.01% | 207 |
|
|
2019
Q2 | $20.6M | Hold |
272,700
| – | – | 0.02% | 215 |
|
|
2019
Q1 | $21.4M | Buy |
272,700
+4,000
| +1% | +$267K | 0.02% | 214 |
|
|
2018
Q4 | $15.1M | Sell |
268,700
-300
| -0.1% | -$18K | 0.01% | 220 |
|
|
2018
Q3 | $17.5M | Buy |
269,000
+54,500
| +25% | +$2.67M | 0.01% | 226 |
|
|
2018
Q2 | $8.72M | Buy |
214,500
+32,500
| +18% | +$1.16M | 0.01% | 236 |
|
|
2018
Q1 | $5.61M | Buy |
182,000
+99,790
| +121% | +$3.02M | ﹤0.01% | 253 |
|
|
2017
Q4 | $2.11M | Buy |
+82,210
| New | +$2.45M | ﹤0.01% | 267 |
|
Other funds holding GKOS
JT
Primecap Management's GKOS Position: Q2 2026 in Review
Primecap Management reduced its Glaukos (GKOS) stake by 9.8% in Q2 2026, selling an estimated $41.7M and leaving 3,040,705 shares worth $425M. The position accounts for 0.25% of the portfolio, ranked #71.
Primecap Management first reported a position in GKOS in Q4 2017 and has held it in 35 quarters since. 366 funds tracked by Wall St. Rank hold GKOS as of Q2 2026.
- Primecap Management held 3,040,705 shares of Glaukos worth $425M as of Q2 2026.
- Primecap Management sold 329,923 Glaukos shares in Q2 2026, an estimated $41.7M.
- Glaukos made up 0.25% of Primecap Management's portfolio in Q2 2026, its #71 holding.
- Primecap Management first reported a position in Glaukos in Q4 2017 and has held it in 35 quarters since.
- 366 funds tracked by Wall St. Rank held Glaukos as of Q2 2026.
Based on Primecap Management's 13F filing for Q2 2026, filed 14 Aug 2026.