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GAMCO INVESTORS, INC. ET AL

Position in GKOS — GLAUKOS Corp

CIK 807249 GREENWICH, CT

Position in GKOS

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$452,542
+$101,140 QoQ
Shares Held
3,238
-0.8% QoQ
Ownership
0.005%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#220
of 364 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in GKOS Over Time

Shares Held

Position Value (USD)

Position in Medical Devices

Healthcare · as of Jun 30, 2026

GAMCO INVESTORS, INC. ET AL holds $88,721,847 across 19 Medical Devices names. GKOS ranks #15 (0.5% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in GKOS

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $452,542 3,238
2026-03-31 $351,402 3,264
2025-12-31 $417,879 3,701
2025-09-30 $660,555 8,100
2025-06-30 $826,423 8,001
2025-03-31 $711,379 7,228
2024-12-31 $781,037 5,209
2024-09-30 $686,575 5,270
2024-06-30 $651,753 5,507
2024-03-31 $753,377 7,990
2023-12-31 $646,333 8,131
2023-09-30 $628,713 8,355
2023-06-30 $649,363 9,119
2023-03-31 $436,270 8,708
2022-12-31 $301,828 6,910
2022-09-30 $382,369 7,182
2022-06-30 $277,062 6,100
2022-03-31 $411,389 7,115
2021-12-31 $280,505 6,312
2021-09-30 $235,695 4,893
2021-06-30 $430,766 5,078
2021-03-31 $431,735 5,144
2020-12-31 $372,913 4,955
2020-09-30 $384,473 7,764
2020-06-30 $312,854 8,143
2020-03-31 $251,231 8,141