IRTC · iRhythm Holdings, Inc.

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$122.44 +5.07 (+4.32%) At close · Jul 29

Market Cap

$4.02B

32.86M

Options Chain

15-min delayed Underlying $122.44 · at close Jul 29, 2026 Options Calculator

Positioning

Aug 21, 2026 · 22 days to expiry · 72 contracts

Put / call OI

0.53

Call-heavy positioning

Open interest

966

contracts outstanding

Volume

270

traded today

Max pain

$115.00

$7.44 below spot

ATM implied vol

66.8%

market's expected move

Open interest by strike · near the money

Calls Puts

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

210

220

230

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270

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 22d Sep 18 50d Nov 20 113d Dec 18 141d Jan 15 169d Feb 19 204d Mar 19 232d Dec 17 505d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
1	1	—	—	$44.00		$0.10	-0.023	162.2%	1	1
Call · $60 In the money Last $44.00 Breakeven $104.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $60 Last $0.10 Breakeven $59.90 Implied vol 162.2% Delta -0.023 ≈2% ITM Gamma 0.001 Theta -0.06 Vega 0.021 Open interest 1 Model this put
0	—	—	—	—		—	-0.026	146.8%	—	0
Call · $65 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $65 Last — Breakeven — Implied vol 146.8% Delta -0.026 ≈3% ITM Gamma 0.001 Theta -0.06 Vega 0.022 Open interest 0 Model this put
0	—	—	—	—		—	-0.027	129.4%	—	0
Call · $70 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $70 Last — Breakeven — Implied vol 129.4% Delta -0.027 ≈3% ITM Gamma 0.002 Theta -0.055 Vega 0.023 Open interest 0 Model this put
0	—	—	—	—		$0.44	-0.057	142.4%	1	3
Call · $75 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $75 Last $0.44 Breakeven $74.56 Implied vol 142.4% Delta -0.057 ≈6% ITM Gamma 0.003 Theta -0.111 Vega 0.041 Open interest 3 Model this put
0	—	68.8%	0.996	—		$0.99	-0.034	102.1%	1	11
Call · $80 In the money Last — Breakeven — Implied vol 68.8% Delta 0.996 ≈100% ITM Gamma 0.001 Theta -0.014 Vega 0.005 Open interest 0 Model this call Put · $80 Last $0.99 Breakeven $79.01 Implied vol 102.1% Delta -0.034 ≈3% ITM Gamma 0.002 Theta -0.052 Vega 0.025 Open interest 11 Model this put
0	—	78.9%	0.978	—		—	-0.081	118.2%	—	0
Call · $85 In the money Last — Breakeven — Implied vol 78.9% Delta 0.978 ≈98% ITM Gamma 0.002 Theta -0.037 Vega 0.013 Open interest 0 Model this call Put · $85 Last — Breakeven — Implied vol 118.2% Delta -0.081 ≈8% ITM Gamma 0.004 Theta -0.119 Vega 0.044 Open interest 0 Model this put
0	—	83.2%	0.948	—		$2.25	-0.091	103.6%	80	82
Call · $90 In the money Last — Breakeven — Implied vol 83.2% Delta 0.948 ≈95% ITM Gamma 0.004 Theta -0.069 Vega 0.026 Open interest 0 Model this call Put · $90 Last $2.25 Breakeven $87.75 Implied vol 103.6% Delta -0.091 ≈9% ITM Gamma 0.005 Theta -0.114 Vega 0.045 Open interest 82 Model this put
0	—	64.3%	0.955	—		$1.98	-0.11	94.2%	1	50
Call · $95 In the money Last — Breakeven — Implied vol 64.3% Delta 0.955 ≈95% ITM Gamma 0.005 Theta -0.05 Vega 0.027 Open interest 0 Model this call Put · $95 Last $1.98 Breakeven $93.02 Implied vol 94.2% Delta -0.11 ≈11% ITM Gamma 0.007 Theta -0.121 Vega 0.07 Open interest 50 Model this put
0	—	71.4%	0.895	—		$1.50	-0.12	77.1%	10	71
Call · $100 In the money Last — Breakeven — Implied vol 71.4% Delta 0.895 ≈90% ITM Gamma 0.009 Theta -0.098 Vega 0.048 Open interest 0 Model this call Put · $100 Last $1.50 Breakeven $98.50 Implied vol 77.1% Delta -0.12 ≈12% ITM Gamma 0.009 Theta -0.104 Vega 0.072 Open interest 71 Model this put
7	3	66.6%	0.847	$10.67		$3.22	-0.176	74.8%	3	73
Call · $105 In the money Last $10.67 Breakeven $115.67 Implied vol 66.6% Delta 0.847 ≈85% ITM Gamma 0.012 Theta -0.115 Vega 0.073 Open interest 7 Model this call Put · $105 Last $3.22 Breakeven $101.78 Implied vol 74.8% Delta -0.176 ≈18% ITM Gamma 0.011 Theta -0.13 Vega 0.074 Open interest 73 Model this put
4	1	68.8%	0.766	$9.20		$5.60	-0.251	76%	1	11
Call · $110 In the money Last $9.20 Breakeven $119.20 Implied vol 68.8% Delta 0.766 ≈77% ITM Gamma 0.015 Theta -0.151 Vega 0.099 Open interest 4 Model this call Put · $110 Last $5.60 Breakeven $104.40 Implied vol 76% Delta -0.251 ≈25% ITM Gamma 0.014 Theta -0.161 Vega 0.099 Open interest 11 Model this put
61	1	64.9%	0.687	$10.80		$8.33	-0.324	71.3%	25	25
Call · $115 In the money Last $10.80 Breakeven $125.80 Implied vol 64.9% Delta 0.687 ≈69% ITM Gamma 0.018 Theta -0.166 Vega 0.101 Open interest 61 Model this call Put · $115 Last $8.33 Breakeven $106.67 Implied vol 71.3% Delta -0.324 ≈32% ITM Gamma 0.017 Theta -0.173 Vega 0.116 Open interest 25 Model this put
115	4	65.2%	0.587	$9.83		$14.16	-0.416	68.5%	1	1
Call · $120 In the money Last $9.83 Breakeven $129.83 Implied vol 65.2% Delta 0.587 ≈59% ITM Gamma 0.02 Theta -0.179 Vega 0.119 Open interest 115 Model this call Put · $120 Last $14.16 Breakeven $105.84 Implied vol 68.5% Delta -0.416 ≈42% ITM Gamma 0.019 Theta -0.177 Vega 0.119 Open interest 1 Model this put
Underlying $122.44
91	1	63.5%	0.485	$5.00		$16.40	-0.513	66.4%	3	4
Call · $125 Last $5.00 Breakeven $130.00 Implied vol 63.5% Delta 0.485 ≈49% ITM Gamma 0.021 Theta -0.178 Vega 0.121 Open interest 91 Model this call Put · $125 In the money Last $16.40 Breakeven $108.60 Implied vol 66.4% Delta -0.513 ≈51% ITM Gamma 0.02 Theta -0.174 Vega 0.121 Open interest 4 Model this put
95	1	65.1%	0.389	$4.00		—	-0.61	66.4%	—	0
Call · $130 Last $4.00 Breakeven $134.00 Implied vol 65.1% Delta 0.389 ≈39% ITM Gamma 0.02 Theta -0.177 Vega 0.109 Open interest 95 Model this call Put · $130 In the money Last — Breakeven — Implied vol 66.4% Delta -0.61 ≈61% ITM Gamma 0.02 Theta -0.169 Vega 0.12 Open interest 0 Model this put
6	1	65.5%	0.307	$1.77		$29.40	-0.696	65.5%	1	1
Call · $135 Last $1.77 Breakeven $136.77 Implied vol 65.5% Delta 0.307 ≈31% ITM Gamma 0.018 Theta -0.16 Vega 0.111 Open interest 6 Model this call Put · $135 In the money Last $29.40 Breakeven $105.60 Implied vol 65.5% Delta -0.696 ≈70% ITM Gamma 0.018 Theta -0.148 Vega 0.111 Open interest 1 Model this put
202	89	73.8%	0.262	$2.00		—	-0.761	68%	—	0
Call · $140 Last $2.00 Breakeven $142.00 Implied vol 73.8% Delta 0.262 ≈26% ITM Gamma 0.015 Theta -0.169 Vega 0.113 Open interest 202 Model this call Put · $140 In the money Last — Breakeven — Implied vol 68% Delta -0.761 ≈76% ITM Gamma 0.015 Theta -0.135 Vega 0.086 Open interest 0 Model this put
3	5	68.2%	0.183	$2.42		$21.00	-0.811	70.4%	5	1
Call · $145 Last $2.42 Breakeven $147.42 Implied vol 68.2% Delta 0.183 ≈18% ITM Gamma 0.013 Theta -0.125 Vega 0.088 Open interest 3 Model this call Put · $145 In the money Last $21.00 Breakeven $124.00 Implied vol 70.4% Delta -0.811 ≈81% ITM Gamma 0.013 Theta -0.12 Vega 0.087 Open interest 1 Model this put
12	4	74.7%	0.157	$0.25		—	-0.85	74.1%	—	0
Call · $150 Last $0.25 Breakeven $150.25 Implied vol 74.7% Delta 0.157 ≈16% ITM Gamma 0.011 Theta -0.125 Vega 0.09 Open interest 12 Model this call Put · $150 In the money Last — Breakeven — Implied vol 74.1% Delta -0.85 ≈85% ITM Gamma 0.011 Theta -0.11 Vega 0.059 Open interest 0 Model this put
1	1	57.5%	0.058	$23.55		—	-0.89	72.9%	—	0
Call · $155 Last $23.55 Breakeven $178.55 Implied vol 57.5% Delta 0.058 ≈6% ITM Gamma 0.007 Theta -0.046 Vega 0.036 Open interest 1 Model this call Put · $155 In the money Last — Breakeven — Implied vol 72.9% Delta -0.89 ≈89% ITM Gamma 0.009 Theta -0.084 Vega 0.059 Open interest 0 Model this put
2	1	63.6%	0.054	$0.60		—	-0.914	75.7%	—	0
Call · $160 Last $0.60 Breakeven $160.60 Implied vol 63.6% Delta 0.054 ≈5% ITM Gamma 0.006 Theta -0.047 Vega 0.036 Open interest 2 Model this call Put · $160 In the money Last — Breakeven — Implied vol 75.7% Delta -0.914 ≈91% ITM Gamma 0.007 Theta -0.072 Vega 0.058 Open interest 0 Model this put
2	5	82.7%	0.086	$1.10		$45.10	-0.913	84.3%	1	0
Call · $165 Last $1.10 Breakeven $166.10 Implied vol 82.7% Delta 0.086 ≈9% ITM Gamma 0.006 Theta -0.09 Vega 0.063 Open interest 2 Model this call Put · $165 In the money Last $45.10 Breakeven $119.90 Implied vol 84.3% Delta -0.913 ≈91% ITM Gamma 0.007 Theta -0.082 Vega 0.059 Open interest 0 Model this put
5	5	98.3%	0.112	$3.23		$47.22	-0.931	85.6%	1	0
Call · $170 Last $3.23 Breakeven $173.23 Implied vol 98.3% Delta 0.112 ≈11% ITM Gamma 0.006 Theta -0.128 Vega 0.064 Open interest 5 Model this call Put · $170 In the money Last $47.22 Breakeven $122.78 Implied vol 85.6% Delta -0.931 ≈93% ITM Gamma 0.006 Theta -0.069 Vega 0.035 Open interest 0 Model this put
2	1	80.6%	0.045	$1.05		—	-0.972	76.5%	—	0
Call · $175 Last $1.05 Breakeven $176.05 Implied vol 80.6% Delta 0.045 ≈4% ITM Gamma 0.004 Theta -0.052 Vega 0.038 Open interest 2 Model this call Put · $175 In the money Last — Breakeven — Implied vol 76.5% Delta -0.972 ≈97% ITM Gamma 0.004 Theta -0.027 Vega 0.016 Open interest 0 Model this put
20	6	85.9%	0.042	$1.05		—	-0.963	86.2%	—	0
Call · $180 Last $1.05 Breakeven $181.05 Implied vol 85.9% Delta 0.042 ≈4% ITM Gamma 0.003 Theta -0.053 Vega 0.038 Open interest 20 Model this call Put · $180 In the money Last — Breakeven — Implied vol 86.2% Delta -0.963 ≈96% ITM Gamma 0.004 Theta -0.039 Vega 0.032 Open interest 0 Model this put
0	—	92.4%	0.044	—		—	-0.98	82.6%	—	0
Call · $185 Last — Breakeven — Implied vol 92.4% Delta 0.044 ≈4% ITM Gamma 0.003 Theta -0.059 Vega 0.039 Open interest 0 Model this call Put · $185 In the money Last — Breakeven — Implied vol 82.6% Delta -0.98 ≈98% ITM Gamma 0.003 Theta -0.021 Vega 0.015 Open interest 0 Model this put
0	—	95.5%	0.039	—		—	-0.988	83.3%	—	0
Call · $190 Last — Breakeven — Implied vol 95.5% Delta 0.039 ≈4% ITM Gamma 0.003 Theta -0.055 Vega 0.02 Open interest 0 Model this call Put · $190 In the money Last — Breakeven — Implied vol 83.3% Delta -0.988 ≈99% ITM Gamma 0.002 Theta -0.012 Vega 0.011 Open interest 0 Model this put
1	1	113.7%	0.066	$3.80		—	-0.971	97.7%	—	0
Call · $195 Last $3.80 Breakeven $198.80 Implied vol 113.7% Delta 0.066 ≈7% ITM Gamma 0.004 Theta -0.099 Vega 0.039 Open interest 1 Model this call Put · $195 In the money Last — Breakeven — Implied vol 97.7% Delta -0.971 ≈97% ITM Gamma 0.003 Theta -0.035 Vega 0.017 Open interest 0 Model this put
1	1	—	—	$8.00		—	-0.989	91.9%	—	0
Call · $200 Last $8.00 Breakeven $208.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $200 In the money Last — Breakeven — Implied vol 91.9% Delta -0.989 ≈99% ITM Gamma 0.002 Theta -0.013 Vega 0.011 Open interest 0 Model this put
1	1	—	—	$1.50		—	-0.978	107%	—	0
Call · $210 Last $1.50 Breakeven $211.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $210 In the money Last — Breakeven — Implied vol 107% Delta -0.978 ≈98% ITM Gamma 0.002 Theta -0.03 Vega 0.016 Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $220 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $220 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		$105.00	—	—	1	0
Call · $230 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $230 In the money Last $105.00 Breakeven $125.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		$90.80	—	—	1	0
Call · $240 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $240 In the money Last $90.80 Breakeven $149.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	-0.982	136.1%	—	0
Call · $250 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $250 In the money Last — Breakeven — Implied vol 136.1% Delta -0.982 ≈98% ITM Gamma 0.002 Theta -0.033 Vega 0.017 Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $260 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $260 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	-0.983	148.9%	—	0
Call · $270 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $270 In the money Last — Breakeven — Implied vol 148.9% Delta -0.983 ≈98% ITM Gamma 0.001 Theta -0.035 Vega 0.017 Open interest 0 Model this put

About this data

Greeks, implied volatility, open interest and the last price come from the latest daily snapshot and are 15-minute delayed. Bid and ask are not included on this plan.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown. The 25 strikes around the money are shown by default — switch to "All 36" for the wings. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 1388658 CUSIP 450056106 13F (30d) 58 filings 58 filers Visit website Investor relations