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PHAT · Phathom Pharmaceuticals, Inc. · Options Chain

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$8.36 -0.01 (-0.12%) At close · Sep 11
Market Cap
$676.33M
Shares
80.90M

Options Chain

Underlying $8.36 · at close Sep 11, 2026 Options Calculator

Positioning

Sep 18, 2026 · 5 days to expiry · 18 contracts · mixed daily-bar sessions · Jul 30, 2026–Sep 9, 2026; 9 unknown
Put / call OI
0.56
Call-heavy positioning
Open interest
374
as of Sep 10, 2026
Volume
dated and unknown daily-bar sessions
Max pain
$10.00
$1.64 above spot
ATM implied vol
181.8%
market's expected move

Open interest by strike

Calls Puts

Chain

Click any strike for greeks, breakeven and the calculator
OI Vol IV Δ Bid Ask Last Strike Last Bid Ask Δ IV Vol OI
$3.50 $8.00 $0.00 $4.90
$1.00 $5.50 $0.15 $0.00 $4.90 1 1
6 1 181.8% 0.728 $0.10 $2.25 $1.73 $0.15 $0.00 $0.95 2 114
164 1 $0.00 $4.90 $0.45 $2.30 $0.00 $4.90 5 17
17 22 $0.00 $4.90 $0.05 $3.45 $2.00 $6.50 3 2
51 20 $0.00 $4.90 $0.05 $4.50 $9.00
2 2 $0.00 $4.90 $0.05 $7.00 $11.50
$0.00 $2.65 $9.50 $14.00
$0.00 $4.90 $12.00 $16.50
About this data

Each contract's last price, day range and volume belong to the daily-bar session shown in its details; unknown means the source omitted that timestamp. Open interest has its own effective date shown separately; implied volatility and greeks are model values computed when fetched. This chain has mixed daily-bar sessions · Jul 30, 2026–Sep 9, 2026; 9 unknown. Positioning totals are shown only when every returned open-interest value has the same known effective date. Bid and ask are real-time consolidated OPRA readings.

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) 64 filings 64 filers Visit website Investor relations