Health Care

Glaukos Corporation (GKOS) options and signal

Figures as of 28 Sep 2026

GKOS is Glaukos Corporation, a Health Care name the model ranks every trading day. The options figures are from the close on 28 Sep 2026. The model's figures are from 25 Sep 2026, one trading day behind the latest, as the Free plan shows them. Every model figure is paper trading.

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At a glance

Figure	Value	Date
IV rank	52 of 100	28 Sep
At the money IV	52.7%	28 Sep
Priced move to 16 Oct	12.5% down, 12.4% up	28 Sep
Call wall and put wall	165 and 160	28 Sep
Signal and the desk's view	No signal, view bearish	25 Sep
Last close	158.56	28 Sep
Next report	28 Oct 2026	28 Sep

Options Snapshot

GKOS's IV rank is 52 of 100 on 28 Sep 2026.

Figure	Value
IV rank	52 of 100
At the money IV	52.7%, near month, 18 days
Put/call ratio, open interest	2.62
Call open interest, strikes captured near the price	2,320 contracts
Put open interest, strikes captured near the price	6,080 contracts
Cost to trade at the money	Fair, 27.3% of the option's mid price

IV rank is where the at the money IV sits among GKOS's own weekly readings, 0 the lowest and 100 the highest.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Priced Range

On 28 Sep 2026, GKOS options priced a move of 12.5 percent down and 12.4 percent up by 16 Oct 2026.

Expiry	Days	Down	Up	Range
16 Oct 2026	18	12.5%	12.4%	138.76 to 178.26
20 Nov 2026	53	23.0%	22.8%	122.06 to 194.76
18 Dec 2026	81	25.5%	26.6%	118.06 to 200.66
15 Jan 2027	109	27.7%	29.6%	114.66 to 205.46
16 Apr 2027	200	37.2%	40.2%	99.56 to 222.26

The range is one standard deviation either side of the close of 158.56, as the option prices imply it.

A priced move restates option prices at the close and says nothing certain about where the price goes.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Gamma Map

On 28 Sep 2026, GKOS's call wall is the 165 strike and its put wall is the 160 strike.

Figure	Value
Call wall, most open call gamma	165
Put wall, most open put gamma	160
Net dollar gamma, calls minus puts	minus $1.71 million
Total dollar gamma, both sides	$2.89 million
Close	158.56

Dollar gamma is stated for a one percent move in the price.

Net is calls minus puts under the standard convention, not a record of who holds the contracts.

Net gamma changes sign at 2 strikes, so no single flip strike is named.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Volatility History

On 28 Sep 2026, GKOS's at the money IV is 52.7 percent against 20 day realized volatility of 39.6 percent.

Figure	Value
At the money IV	52.7%
Realized volatility, 20 trading days	39.6%
Realized volatility, 60 trading days	34.8%
IV against its own weekly record	In the middle
Weekly readings on record	513, from 13 May 2016
Weeks the price moved more than the one week priced move	19.1% of 236 weeks

Realized volatility is worked out from the daily closes the desk holds, not from the option chain.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Volatility Weather

On 28 Sep 2026, GKOS's at the money IV runs from 52.7 percent at 18 days to 54.3 percent at 200 days.

Days to expiry	At the money IV
18	52.7%
53	58.3%
81	56.4%
109	54.7%
200	54.3%

Far expiries price more volatility than near ones, an upward sloping term structure.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Volatility Smile

On 28 Sep 2026, at the 53 day expiry, GKOS's IV ten percent below the price sits 2.2 points above at the money IV.

Strike area	Implied volatility	Against at the money
10% below the price	60.5%	+2.2 points
At the money	58.3%	0.0 points
10% above the price	59.5%	+1.2 points

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Volatility Surface

On 28 Sep 2026, GKOS's surface spans 5 expiries out to 200 days, with IV from 27.7 to 60.5 percent near the price.

Figure	Value
Expiries captured	5
Nearest expiry	16 Oct 2026, 18 days
Farthest expiry	16 Apr 2027, 200 days
Points within 10% of the price, 7 days out or more	26
Lowest IV among them	27.7%
Highest IV among them	60.5%

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Expiry Ladder

On 28 Sep 2026, GKOS has 5 captured expiries, from 16 Oct 2026 to 16 Apr 2027.

Expiry	Days	At the money IV	Call open interest	Put open interest
16 Oct 2026	18	52.7%	868	4,983
20 Nov 2026	53	58.3%	207	208
18 Dec 2026	81	56.4%	826	662
15 Jan 2027	109	54.7%	401	218
16 Apr 2027	200	54.3%	21	13

Open interest is summed over the strikes captured near the price on each expiry.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Strike Table

On 28 Sep 2026, GKOS's largest open interest sits at the 140 strike, with 1,399 contracts across the captured expiries.

Strike	Call open interest	Put open interest	Total
140	128	1,271	1,399
160	101	983	1,084
150	35	1,027	1,062
165	261	643	904
155	210	554	764
175	91	611	702

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Since Yesterday

From 25 Sep 2026 to 28 Sep 2026, GKOS's at the money IV moved from 54.3 percent to 52.7 percent.

Figure	25 Sep	28 Sep	Change
At the money IV	54.3%	52.7%	-1.6 points
Open interest, strikes captured near the price	7,964	8,407	+443
Put/call ratio, open interest	3.27	2.62	-0.65

Open interest changes cannot identify buyers or sellers.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Changed Hands

On 28 Sep 2026, 3,918 GKOS option contracts traded, 2.2 times its own recent average.

Figure	Value
Calls traded	2,085
Puts traded	1,833
Against its recent average	2.2 times
Busier than	20 of its last 20 trading days
Open interest, whole chain	8,741 contracts
Volume to open interest	0.45
Unusual volume flag	Yes, 1 contract traded well above open interest
Largest flagged contract	The 145 put expiring 16 Oct, 457 traded against 219 open

Traded volume and open interest are shown side by side and never combined. Open interest changes cannot identify buyers or sellers.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Positioning Replay

The replay holds 31 trading days of GKOS's option positioning, from 13 Aug 2026 to 28 Sep 2026.

Date	Close	Net dollar gamma	Top call strike	Top put strike
13 Aug 2026	189.45	$723,355	185	160
21 Sep 2026	161.53	minus $1.86 million	155	160
28 Sep 2026	158.56	minus $1.71 million	165	160

Each frame restates one nightly capture. Net is calls minus puts, a convention, not who holds the contracts.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Read-out

On 25 Sep 2026 the desk's view of GKOS was bearish, paper trading.

Figure	Value
Side	Bearish at 45 trading days, no signal
Level above the close	166.74, the swing high of 21 Sep 2026, a close past it runs against the view
Level below the close	136.18, the swing low of 30 Jun 2026
The chart	Sits against the view
Strategy family	Bear call spread (sell a call spread above the price)
Price target	None. The desk has no price model.

The levels are prices the shares turned at on the chart, with the date of each.

Paper trading. The model's figures from 25 Sep 2026, one trading day behind, as the Free plan shows them.

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Rank by Timeframe

On 25 Sep 2026 GKOS sat at the 13th percentile of the model's 45 trading day ranking, paper trading.

Timeframe	Percentile	Side
10 trading days	69 of 100	Neutral
20 trading days	47 of 100	Neutral
45 trading days	13 of 100	Bearish

100 is the top of the ranking. A name in the middle three fifths is neutral.

Paper trading. The model's figures from 25 Sep 2026, one trading day behind, as the Free plan shows them.

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Timeframe Agreement

On 25 Sep 2026, 1 of 3 timeframes put GKOS on the bearish side, paper trading.

Group	Timeframes	Side	On that side
Near	10 day, 20 day	Neutral	0 of 2
Long	45 day	Bearish	1 of 1

Paper trading. The model's figures from 25 Sep 2026, one trading day behind, as the Free plan shows them.

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Signal History

On 25 Sep 2026 GKOS had carried no signal for at least 18 trading days, paper trading.

Trading day	Signal	45 day percentile
25 Sep 2026	None	13 of 100
24 Sep 2026	None	13 of 100
23 Sep 2026	None	31 of 100
22 Sep 2026	None	38 of 100
21 Sep 2026	None	43 of 100
18 Sep 2026	None	19 of 100
17 Sep 2026	None	52 of 100
16 Sep 2026	None	58 of 100

Paper trading. The model's figures from 25 Sep 2026, one trading day behind, as the Free plan shows them.

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Sector Split

On 25 Sep 2026, 32 of 120 Health Care names were bullish and 52 were bearish, paper trading.

Sector	Names	Bullish	Bearish	Neutral
Health Care	120	32	52	36

Paper trading. The model's figures from 25 Sep 2026, one trading day behind, as the Free plan shows them.

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Price Chart

GKOS closed at 158.56 on 28 Sep 2026.

Figure	Value
Last close	158.56
Change over 5 trading days	-1.8%
Change over 21 trading days	-12.8%
Change over 63 trading days	+11.5%
Change over 252 trading days	+94.6%
52 week high	191.62
52 week low	73.16
20 day moving average	168.51
50 day moving average	171.27
200 day moving average	133.98
RSI, 14 days	39

Worked out from the desk's own daily bars, adjusted for share splits.

From the daily bars through 28 Sep 2026. Current on every plan.

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Earnings Radar

GKOS reports next on 28 Oct 2026, a date worked out from past quarters.

Figure	Value
Next report	28 Oct 2026, after the close
Date	Worked out from past quarters
Move after the report of 29 Jul 2026	+4.2%
Move after the report of 30 Apr 2026	-2.4%
Move after the report of 28 Jan 2026	-3.9%
Move after the report of 30 Apr 2025	-11.4%

Earnings calendar as of 28 Sep 2026. Current on every plan.

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Seasonality

In the 11 Septembers on record, GKOS's average change was minus 3.2 percent, and it rose in 36.4 percent of them.

Month	Average change	Middle change	Share of years up	Years
September	-3.2%	-2.8%	36.4%	11
October	-1.6%	+1.5%	54.5%	11
November	+3.0%	+0.5%	54.5%	11

Each figure is a month end to month end change in past years. A past month says nothing certain about the next one.

Monthly history through 28 Sep 2026. Current on every plan.

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Questions

What is GKOS's IV rank?: GKOS's IV rank is 52 of 100 on 28 Sep 2026.
What move are GKOS options pricing?: On 28 Sep 2026, GKOS options priced a move of 12.5 percent down and 12.4 percent up by 16 Oct 2026.
Where are GKOS's call wall and put wall?: On 28 Sep 2026, GKOS's call wall is the 165 strike and its put wall is the 160 strike.
What was the desk's latest view of GKOS on the Free plan?: On 25 Sep 2026 the desk's view of GKOS was bearish, paper trading.
When does GKOS report earnings next?: GKOS reports next on 28 Oct 2026, a date worked out from past quarters.

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