PHAT · Phathom Pharmaceuticals, Inc.

Track PHAT — free Ask ALVIS about PHAT

$11.64 -0.02 (-0.17%) At close · Jul 29 Earnings today

Market Cap

$928.36M

79.76M

Options Chain

15-min delayed Underlying $11.64 · at close Jul 29, 2026 Options Calculator

Positioning

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

Put / call OI

0.64

Call-heavy positioning

Open interest

2,988

contracts outstanding

Volume

217

traded today

Max pain

$10.00

$1.64 below spot

ATM implied vol

149.5%

market's expected move

Open interest by strike

Calls Puts

2.5

7.5

12.5

17.5

22.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 22d Sep 18 50d Nov 20 113d Jan 15 169d Feb 19 204d Jan 21 540d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	2	—	—	$7.55		$0.20	—	—	1	1
Call · $2.5 In the money Last $7.55 Breakeven $10.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $2.5 Last $0.20 Breakeven $2.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
0	2	—	—	$8.95		$0.18	-0.075	347.8%	1	6
Call · $5 In the money Last $8.95 Breakeven $13.95 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $5 Last $0.18 Breakeven $4.82 Implied vol 347.8% Delta -0.075 ≈7% ITM Gamma 0.014 Theta -0.032 Vega 0.005 Open interest 6 Model this put
170	97	—	—	$4.60		$0.15	-0.091	166.8%	1	27
Call · $7.5 In the money Last $4.60 Breakeven $12.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 170 Model this call Put · $7.5 Last $0.15 Breakeven $7.35 Implied vol 166.8% Delta -0.091 ≈9% ITM Gamma 0.034 Theta -0.018 Vega 0.004 Open interest 27 Model this put
504	5	127.7%	0.761	$2.40		$0.60	-0.229	118.2%	11	1.1k
Call · $10 In the money Last $2.40 Breakeven $12.40 Implied vol 127.7% Delta 0.761 ≈76% ITM Gamma 0.082 Theta -0.027 Vega 0.009 Open interest 504 Model this call Put · $10 Last $0.60 Breakeven $9.40 Implied vol 118.2% Delta -0.229 ≈23% ITM Gamma 0.087 Theta -0.023 Vega 0.009 Open interest 1.1k Model this put
Underlying $11.64
676	3	108.5%	0.484	$0.98		$1.68	-0.446	190.4%	1	14
Call · $12.5 Last $0.98 Breakeven $13.48 Implied vol 108.5% Delta 0.484 ≈48% ITM Gamma 0.125 Theta -0.029 Vega 0.012 Open interest 676 Model this call Put · $12.5 In the money Last $1.68 Breakeven $10.82 Implied vol 190.4% Delta -0.446 ≈45% ITM Gamma 0.071 Theta -0.049 Vega 0.012 Open interest 14 Model this put
288	21	117.3%	0.259	$0.25		$4.10	-0.767	107.8%	3	15
Call · $15 Last $0.25 Breakeven $15.25 Implied vol 117.3% Delta 0.259 ≈26% ITM Gamma 0.094 Theta -0.025 Vega 0.009 Open interest 288 Model this call Put · $15 In the money Last $4.10 Breakeven $10.90 Implied vol 107.8% Delta -0.767 ≈77% ITM Gamma 0.098 Theta -0.021 Vega 0.009 Open interest 15 Model this put
106	1	196.3%	0.292	$0.28		—	-0.892	114.2%	—	0
Call · $17.5 Last $0.28 Breakeven $17.78 Implied vol 196.3% Delta 0.292 ≈29% ITM Gamma 0.06 Theta -0.045 Vega 0.009 Open interest 106 Model this call Put · $17.5 In the money Last — Breakeven — Implied vol 114.2% Delta -0.892 ≈89% ITM Gamma 0.057 Theta -0.013 Vega 0.006 Open interest 0 Model this put
30	5	189.3%	0.189	$1.00		$8.50	-0.907	143.3%	11	9
Call · $20 Last $1.00 Breakeven $21.00 Implied vol 189.3% Delta 0.189 ≈19% ITM Gamma 0.049 Theta -0.034 Vega 0.007 Open interest 30 Model this call Put · $20 In the money Last $8.50 Breakeven $11.50 Implied vol 143.3% Delta -0.907 ≈91% ITM Gamma 0.042 Theta -0.015 Vega 0.006 Open interest 9 Model this put
2	2	205.4%	0.162	$1.85		—	-0.916	164.8%	—	0
Call · $22.5 Last $1.85 Breakeven $24.35 Implied vol 205.4% Delta 0.162 ≈16% ITM Gamma 0.04 Theta -0.033 Vega 0.007 Open interest 2 Model this call Put · $22.5 In the money Last — Breakeven — Implied vol 164.8% Delta -0.916 ≈92% ITM Gamma 0.033 Theta -0.015 Vega 0.004 Open interest 0 Model this put
47	49	226.7%	0.151	$1.40		—	-0.922	183.9%	—	0
Call · $25 Last $1.40 Breakeven $26.40 Implied vol 226.7% Delta 0.151 ≈15% ITM Gamma 0.035 Theta -0.035 Vega 0.007 Open interest 47 Model this call Put · $25 In the money Last — Breakeven — Implied vol 183.9% Delta -0.922 ≈92% ITM Gamma 0.028 Theta -0.016 Vega 0.004 Open interest 0 Model this put
2	1	260.7%	0.132	$0.65		—	-0.93	217.2%	—	0
Call · $30 Last $0.65 Breakeven $30.65 Implied vol 260.7% Delta 0.132 ≈13% ITM Gamma 0.028 Theta -0.037 Vega 0.008 Open interest 2 Model this call Put · $30 In the money Last — Breakeven — Implied vol 217.2% Delta -0.93 ≈93% ITM Gamma 0.022 Theta -0.017 Vega 0.004 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. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 1783183 CUSIP 71722W107 13F (30d) 22 filings 22 filers Visit website Investor relations