Insider buying last 90 days
No open-market insider purchases were filed for GKOS in the last 90 days.
From Form 4 filings, dated to when each was filed.
Sep 28 close
Glaukos shares this week reflect a mix of insider selling and product-related news. Chief Development Officer Tomas Navratil sold $249,158 worth of stock under a Rule 10b5-1 plan, alongside a related Form 144 filing, though this followed the vesting of restricted shares dated March 22, 2025. Separately, the company launched a keratoconus-awareness campaign with Stephen Curry, and options activity has pointed to a bullish call spread targeting $180 by October 16, 2026, built from buying $160 calls and selling $180 calls.
The stock closed at $158.56, up 2.7%, sitting between its 50-day average of $171.27 and 200-day average of $133.98, indicating a mixed trend. The GekkoIndex reads 68.2, placing it in the Accumulation zone. Price sits 13% below Gekko Fair Value of $182.24, a gap that bears watching. Over the past year the stock has returned 94.6%, though the past month shows a decline of 12.8%.
Over the next 20 trading days, the next earnings report is due 4 November 2026, outside that window. In the last 30 days, 2 unusual options signals have been recorded, with call premium of $708,621 against put premium of $954,720. Seasonality over 5 years shows an average 20-day return of -4.3% from this point in the calendar, with gains in 2 of those years. Analyst coverage from 13 firms shows 12 buy ratings and 1 hold, with a consensus target of $198.69.
Written by AI and checked automatically against the figures on this page. Generated Sep 29, 2026 from the data above.
Glaukos scores 3 supportive, 1 mixed and 2 headwinds across the 6 checklist items with data.
Six things swing traders check before a 20-day hold, read from the latest data.
3 supportive1 mixed2 headwinds
Averages disagree
Close $158.56 sits between the 50-day ($171.27) and 200-day ($133.98) averages, or the averages disagree.
See the chart68.2, Accumulation
Reading 68.2 is in the Accumulation zone.
See the GekkoIndex13.0% below
Price is 13% below Gekko Fair Value (more than 5% below).
See fair valueLeans bearish
Last 30 days: 2 unusual options signals.
See smart moneyReports in 36 days
Next report Nov 4, 2026, 36 days away — outside a typical 20-trading-day hold.
See earnings−4.3% on average
From this point in the calendar, the next 20 trading days averaged −4.3% over 5 years, rising in 2 of them.
See seasonalityA description of current data, not a recommendation. How this page works
Glaukos closed at $158.56 on Sep 28, 2026, +94.6% over the past year, inside a 52-week range of $73.16 to $191.62.
Use the left and right arrow keys to read daily values.
Put GKOS on a Gekko watchlist and see its GekkoIndex, Gekko Fair Value and smart money signals update on the chart as they change.
Glaukos develops medical devices and pharmaceutical products for eye conditions, with particular attention to glaucoma along with corneal and retinal disorders. It is best recognized for its micro-bypass stent line, including iStent, iStent inject, and iStent inject W, small devices implanted during cataract surgery to help fluid drain from the eye and ease mild-to-moderate open-angle glaucoma. Beyond these established products, the company is advancing iStent Infinite, a three-stent option meant to be used on its own for harder-to-treat glaucoma cases, and iDose TR, an implant built on its micro-scale technology that delivers medication directly to the eye over time.
Glaukos reaches physicians and patients through its own sales force as well as outside distributors, with sales spanning both domestic and international markets.
The company was founded in 1998 and is based in San Clemente, California. Its shares trade on the NYSE under the ticker GKOS.
Glaukos’s GekkoIndex — Gekko’s 0 to 100 smart money score — reads 68.2, in the Accumulation zone, up 0.4 points over five sessions.
Up 0.4 points over five sessions.
Reading for Sep 28, 2026
| Zone | Readings | 5 days | 20 days | ||
|---|---|---|---|---|---|
| Buying | 31 | +0.4% | +4.0% | ||
| Accumulation (current zone) | 153 | +1.0% | +3.4% | ||
| Neutral | 434 | +0.5% | +2.6% | ||
| Distribution | 48 | +0.8% | −0.5% | ||
| Selling | 6 | Too few readings yet | |||
Average GKOS share-price change over the trading days after each daily reading in its GekkoIndex history. Across every stock Gekko tracks, Accumulation readings averaged +2.3% over 20 days. Past behaviour doesn’t guarantee future results.
Accumulation zone: Institutional interest building. About the five zones →
Glaukos trades 13.0% below Gekko Fair Value of $182.24, so the shares are undervalued on Gekko’s estimate.
Gekko’s own estimate of what Glaukos shares are worth, recalculated every trading day.
$182.24
Gekko Fair Value, Sep 29, 2026
13.0% Undervalued
No open-market insider purchases were filed for Glaukos, and no Congress trades were disclosed, in the last 90 days.
Plus buybacks, unusual options and fund positions, each dated to when it became public.
No open-market insider purchases were filed for GKOS in the last 90 days.
From Form 4 filings, dated to when each was filed.
No trades in GKOS were disclosed by members of Congress in the last 90 days.
From congressional disclosures, which report amounts as ranges.
Glaukos has been buying back its own shares.
From company filings.
2signals, 43% of the flagged premium in calls.
Latest: Bullish flow on Sep 29, $709K in unusual premium.
1of the funds Gekko tracks holds GKOS.
Glaukos reports on Nov 4, 2026, after the close (36 days away), and beat the EPS estimate in 6 of its last 8 reports.
Nov 4, 2026
Expected after the close, 36 days away
| Reported | EPS | Revenue | Move |
|---|---|---|---|
| Jul 29, 2026 | −$0.14 est −$0.28 | $185.6M est $150.9M | +11.4% |
| Apr 29, 2026 | −$0.18 est −$0.28 | $150.6M est $137.0M | +20.1% |
| Feb 17, 2026 | −$0.28 est −$0.22 | $143.1M est $136.4M | +10.5% |
| Oct 29, 2025 | −$0.16 est −$0.27 | $133.5M est $129.5M | +12.9% |
| Jul 30, 2025 | −$0.24 est −$0.26 | $124.1M est $122.4M | −8.2% |
| Apr 30, 2025 | −$0.22 est −$0.35 | $106.7M est $102.8M | −11.0% |
| Feb 20, 2025 | −$0.40 est −$0.39 | $105.5M est $101.0M | −21.6% |
| Nov 4, 2024 | −$0.28 est −$0.48 | $96.67M est $100.5M | −3.0% |
“Move” is the close of the first session after the report compared with the close of the last session before it, so it reads the same whether the company reported before the open or after the close.
Analysts’ average 12-month price target for Glaukos is $198.69, +25.3% from the last close, from 13 firms rating the stock in the last 90 days.
Each firm’s latest rating in the last 90 days: 13 firms.
| Date | Firm | Target | vs price |
|---|---|---|---|
| Sep 22 | Jefferies | $210 | +32.4% |
| Sep 4 | Stifel Nicolaus | $190 | +19.8% |
| Aug 20 | BTIG | $202 | +27.4% |
| Aug 14 | Citi | $225 | +41.9% |
| Aug 13 | Citi | $225 | +41.9% |
Gekko doesn’t publish price predictions. These are analyst targets and historical base rates, which don’t guarantee future results.
Over the next 20 trading days from Sep 29, Glaukos averaged −4.3% across the last 5 years, rising in 2 of them.
| Window | Average | Years higher |
|---|---|---|
| Next 5 trading days | +0.8% | 3 of 5 |
| Next 10 trading days | −3.2% | 1 of 5 |
| Next 15 trading days | −2.3% | 2 of 5 |
| Next 20 trading days | −4.3% | 2 of 5 |
| Next 30 trading days | +0.1% | 3 of 5 |
For scale, GKOS’s typical 20-trading-day move in either direction is about 8.2%.
Glaukos’s market cap is $9.35B and revenue of $612.8M over the last twelve months.
Coverage of Glaukos this week reads positive: 3 positive, 3 neutral and 2 negative headlines.
Glaukos’s 6 largest industry peers by market value, with today’s move, GekkoIndex zone and gap to Gekko Fair Value.
| Stock | GekkoIndex zone | vs Fair Value |
|---|---|---|
| TMOThermo Fisher Scientific | Distribution | 23.7% above |
| ABTAbbott Laboratories | Accumulation | 15.0% below |
| DHRDanaher | Distribution | 10.2% above |
| ISRGIntuitive Surgical | Neutral | 17.0% above |
| MDTMedtronic | Accumulation | 24.1% below |
| SYKStryker | Accumulation | 14.1% below |
A peer links to its own page where one exists.
Glaukos’s market cap is $9.35B at the Sep 28, 2026 close of $158.56, with 58.98M shares outstanding.
The consensus analyst 12-month price target for Glaukos is $198.69, +25.3% from the last close. Of the 13 firms that rated the stock in the last 90 days, 12 rate it a buy, 1 a hold and 0 a sell. Gekko doesn’t publish price predictions of its own.
On Gekko’s estimate Glaukos is undervalued: the Sep 28, 2026 close of $158.56 is 13.0% below Gekko Fair Value of $182.24. Gekko Fair Value is recalculated every trading day, and a gap inside 5% either way counts as about fair value.
Glaukos is expected to report on Nov 4, 2026, after the market closes (36 days away). Analysts expect earnings of −$0.12 per share on revenue of $167.9M. Glaukos beat the earnings estimate in 6 of its last 8 reports, moving 12.3% on average across the report.
Glaukos’s 52-week high is $191.62 and its 52-week low is $73.16; it closed at $158.56 on Sep 28, 2026, +94.6% over the past year.
Gekko describes the data; it does not make buy or sell recommendations. On the swing-trade checklist, 3 of the 6 items with data read as supportive (gekkoindex, fair value and earnings risk), 1 as mixed (trend) and 2 as headwinds (smart money and seasonality). The checklist is a description of current data, not a recommendation.
Gekko flagged 2 unusual options signals in Glaukos over the last 30 days, with $709K of flagged premium in calls and $955K in puts. The latest, bullish flow, was on Sep 29, 2026 with $709K in unusual premium. The signal-by-signal table is in Gekko.
During US trading hours the price at the top of the page is a delayed quote, refreshed every 15 minutes; everything else is rebuilt after each US market close. The GekkoIndex, Gekko Fair Value and the checklist are Gekko’s own, and the Gekko Brief is written by AI from this page’s data and checked against it before it is published. How Gekko’s data works →
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