Tower Research Capital (TRC)’s Glaukos GKOS Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$431K Buy
4,003
+1,809
+82% +$204K 0.01% 1019
2025
Q4
$248K Buy
2,194
+424
+24% +$40.5K 0.01% 1273
2025
Q3
$144K Sell
1,770
-4,034
-70% -$370K ﹤0.01% 1726
2025
Q2
$599K Buy
5,804
+4,562
+367% +$428K 0.02% 841
2025
Q1
$122K Sell
1,242
-1,155
-48% -$154K ﹤0.01% 1662
2024
Q4
$359K Sell
2,397
-298
-11% -$41.1K 0.01% 1280
2024
Q3
$351K Sell
2,695
-6,399
-70% -$796K 0.01% 1119
2024
Q2
$1.08M Buy
9,094
+7,245
+392% +$769K 0.02% 726
2024
Q1
$174K Sell
1,849
-7,799
-81% -$697K ﹤0.01% 1503
2023
Q4
$767K Buy
9,648
+9,057
+1,532% +$618K 0.01% 1040
2023
Q3
$44.5K Sell
591
-592
-50% -$44.2K ﹤0.01% 2647
2023
Q2
$84.2K Sell
1,183
-55
-4% -$3.16K ﹤0.01% 2158
2023
Q1
$62K Buy
1,238
+892
+258% +$43.3K ﹤0.01% 2310
2022
Q4
$15K Sell
346
-5,384
-94% -$266K ﹤0.01% 3415
2022
Q3
$305K Buy
5,730
+4,233
+283% +$218K 0.01% 1536
2022
Q2
$68K Buy
1,497
+1,055
+239% +$50.1K ﹤0.01% 2604
2022
Q1
$26K Sell
442
-3,206
-88% -$170K ﹤0.01% 3281
2021
Q4
$162K Sell
3,648
-16,941
-82% -$782K ﹤0.01% 1919
2021
Q3
$992K Buy
20,589
+19,675
+2,153% +$1.09M 0.03% 537
2021
Q2
$77K Sell
914
-5,449
-86% -$447K ﹤0.01% 2638
2021
Q1
$535K Buy
6,363
+3,172
+99% +$279K 0.01% 1186
2020
Q4
$240K Sell
3,191
-26,169
-89% -$1.65M 0.01% 1579
2020
Q3
$1.45M Buy
29,360
+21,193
+259% +$931K 0.02% 636
2020
Q2
$314K Buy
8,167
+5,851
+253% +$218K 0.01% 1404
2020
Q1
$71K Buy
2,316
+2,314
+115,700% +$119K ﹤0.01% 1124
2019
Q4
$0 Sell
2
-417
-100% -$25.4K ﹤0.01% 3822
2019
Q3
$26K Sell
419
-421
-50% -$29.7K ﹤0.01% 2292
2019
Q2
$63K Sell
840
-1,442
-63% -$103K ﹤0.01% 1456
2019
Q1
$179K Buy
2,282
+1,471
+181% +$98.2K 0.01% 1167
2018
Q4
$46K Buy
+811
New +$48.8K ﹤0.01% 1341
2018
Q1
Sell
-1,460
Closed -$37K 3468
2017
Q4
$37K Sell
1,460
-1,283
-47% -$38.2K ﹤0.01% 1557
2017
Q3
$91K Buy
+2,743
New +$104K 0.01% 1447
2017
Q2
Sell
-50
Closed -$2.15K 2984
2017
Q1
$3K Sell
50
-519
-91% -$22.6K ﹤0.01% 2464
2016
Q4
$20K Buy
+569
New +$19.5K ﹤0.01% 2136
2016
Q3
Sell
-388
Closed -$11K 3924
2016
Q2
$11K Sell
388
-1,415
-78% -$32.8K ﹤0.01% 2722
2016
Q1
$30K Buy
1,803
+1,293
+254% +$22.4K ﹤0.01% 1063
2015
Q4
$13K Sell
510
-795
-61% -$18.2K ﹤0.01% 1784
2015
Q3
$32K Buy
1,305
+55
+4% +$1.66K ﹤0.01% 1338
2015
Q2
$36K Buy
+1,250
New +$36.3K ﹤0.01% 1618

Other funds holding GKOS

Tower Research Capital (TRC)'s GKOS Position: Q1 2026 in Review

Tower Research Capital (TRC) increased its Glaukos (GKOS) stake by 82% in Q1 2026, buying an estimated $204K and bringing the position to 4,003 shares worth $431K. The position accounts for 0.01% of the portfolio, ranked #1019.

Tower Research Capital (TRC) first reported a position in GKOS in Q2 2015 and has held it in 39 quarters since. The position peaked at $1.45M in Q3 2020. 336 funds tracked by Wall St. Rank hold GKOS as of Q1 2026.

  • Tower Research Capital (TRC) held 4,003 shares of Glaukos worth $431K as of Q1 2026.
  • Tower Research Capital (TRC) bought 1,809 Glaukos shares in Q1 2026, an estimated $204K.
  • Glaukos made up 0.01% of Tower Research Capital (TRC)'s portfolio in Q1 2026, its #1019 holding.
  • Tower Research Capital (TRC) first reported a position in Glaukos in Q2 2015 and has held it in 39 quarters since.
  • Tower Research Capital (TRC)'s Glaukos position peaked at $1.45M in Q3 2020.
  • 336 funds tracked by Wall St. Rank held Glaukos as of Q1 2026.

Based on Tower Research Capital (TRC)'s 13F filing for Q1 2026, filed 15 May 2026.