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UPB · Upstream Bio, Inc. · Options Chain

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$5.73 -0.02 (-0.35%) At close · Sep 11
Market Cap
$313.84M
Shares
54.77M

Options Chain

Underlying $5.73 · at close Sep 11, 2026 Options Calculator

Positioning

Sep 18, 2026 · 6 days to expiry · 10 contracts · mixed daily-bar sessions · Aug 20, 2026–Sep 8, 2026; 4 unknown
Put / call OI
0.36
Call-heavy positioning
Open interest
210
as of Sep 10, 2026
Volume
dated and unknown daily-bar sessions
Max pain
$7.50
$1.77 above spot

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
$1.00 $5.50 $0.16 $0.00 $0.05 1 2
$0.00 $4.90 $0.05 $0.00 $0.15 11 41
126 13 $0.00 $0.50 $0.05 $1.10 $0.00 $4.90 7 13
22 20 $0.00 $4.90 $0.15 $2.00 $6.50
6 4 $0.00 $4.90 $0.12 $4.50 $9.00
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 · Aug 20, 2026–Sep 8, 2026; 4 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 2022626 CUSIP 91678A107 13F (30d) 89 filings 89 filers Visit website Investor relations