NASDAQ: UPB
Upstream Bio Inc Stock

$25.56-0.14 (-0.54%)
Updated Nov 18, 2025
UPB Price
$25.56
Fair Value Price
$3.83
Market Cap
$1.38B
52 Week Low
$5.14
52 Week High
$26.90
P/E
2.39x
P/B
3.65x
P/S
362.43x
PEG
N/A
Dividend Yield
N/A
Revenue
$2.80M
Earnings
-$122.23M
Gross Margin
100%
Operating Margin
-4,366.77%
Profit Margin
-4,386.4%
Debt to Equity
0.03
Operating Cash Flow
-$122M
Beta
1.14
Next Earnings
N/A
Ex-Dividend
N/A
Next Dividend
N/A

UPB Overview

Upstream Bio, Inc., a clinical-stage biotechnology company, develops treatments for inflammatory diseases that focuses on severe respiratory disorders. It develops verekitug, a monoclonal antibody that targets and inhibits the thymic stromal lymphopoietin receptor. The company also develops therapies to treat severe asthma, chronic rhinosinusitis with nasal polyps, and chronic obstructive pulmonary disease. Upstream Bio, Inc. was incorporated in 2021 and is based in Waltham, Massachusetts.

Zen Rating

Our proven quant model uses 115 proprietary factors, including AI, to determine UPB's potential to beat the market

CHold
  • Stocks with a Zen Rating of Hold (C) had an average return of +7.53% per year. Learn More

Zen Rating Component Grades

D
Zen Rating uses advanced AI algorithms that detect subtle patterns in market data; it anticipates future trends that point to superior stock price results.

Industry: Biotech

Industry Rating
F
UPB
Ranked
#111 of 484

Top Ranked Stocks in Industry

Name / TickerPriceZen Rating
$6.72A
$103.89A
$15.50A
View Top Biotech Stocks

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UPB News

Overview

Due Diligence Score

Industry Average (23)
You've viewed Due Diligence Score for 10/10 free stocks. Upgrade to Premium to see how UPB scored across 33 valuation, financial, forecast, performance, and dividend due diligence checks.

Due Diligence Checks

UPB ($25.56) is overvalued by 566.55% relative to our estimate of its Fair Value price of $3.83 based on Discounted Cash Flow (DCF) modelling
Below Fair Value Valuation
UPB ($25.56) is not significantly undervalued (566.55%) relative to our estimate of its Fair Value price of $3.83 based on Discounted Cash Flow (DCF) modelling, when including a healthy margin of safety
Significantly Below Fair Value Valuation
UPB is good value based... subscribe to Premium to read more.
P/E vs Market Valuation
There are 30 more UPB due diligence checks available for Premium users.

Valuation

UPB fair value

Fair Value of UPB stock based on Discounted Cash Flow (DCF)

Price
$25.56
Fair Value
$3.83
Overvalued by
566.55%
UPB ($25.56) is overvalued by... subscribe to Premium to read more.
Below Fair Value Valuation
UPB ($25.56) is not significantly... subscribe to Premium to read more.
Significantly Below Fair Value Valuation

UPB price to earnings (PE)

For valuing profitable companies with steady earnings

Company
2.39x
Industry
281.78x
Market
44.3x
UPB is good value based... subscribe to Premium to read more.
P/E vs Industry Valuation
UPB is good value based... subscribe to Premium to read more.
P/E vs Market Valuation

UPB price to book (PB)

For valuing companies that are loss-making or have lots of physical asset

Company
3.65x
Industry
5.15x
UPB is good value based... subscribe to Premium to read more.
P/B vs Industry Valuation

UPB's financial health

Profit margin

Revenue
$683.0k
Net Income
-$33.7M
Profit Margin
-4,941.1%
UPB's cash and short-term investments... subscribe to Premium to read more.
Interest Coverage Financials
UPB's profit margin has decreased... subscribe to Premium to read more.
Profit Margin Growth Financials

Assets to liabilities

Assets
$391.2M
Liabilities
$12.6M
Debt to equity
0.03
UPB's short-term assets ($389.02M) exceed... subscribe to Premium to read more.
Short-term Liabilities Financials
UPB's short-term assets ($389.02M) exceed... subscribe to Premium to read more.
Long-term Liabilities Financials
UPB's debt to equity ratio... subscribe to Premium to read more.
Healthy Debt to Equity Financials

Cash flow

Operating
-$22.2M
Investing
$48.2M
Financing
$760.0k
UPB's cash and short-term investments... subscribe to Premium to read more.
Debt Coverage Financials

UPB vs Biotech Stocks

TickerZen RatingMarket Cap1d %P/EP/B
UPBC$1.38B-0.54%2.39x3.65x
OLMAD$1.38B+136.38%-11.44x4.50x
ARDXC$1.41B-1.69%-25.26x9.15x
ELVNC$1.34B+3.81%-12.28x2.82x
ATAID$1.43B-0.76%-4.85x8.93x

Upstream Bio Stock FAQ

What is Upstream Bio's quote symbol?

(NASDAQ: UPB) Upstream Bio trades on the NASDAQ under the ticker symbol UPB. Upstream Bio stock quotes can also be displayed as NASDAQ: UPB.

If you're new to stock investing, here's how to buy Upstream Bio stock.

What is the 52 week high and low for Upstream Bio (NASDAQ: UPB)?

(NASDAQ: UPB) Upstream Bio's 52-week high was $26.90, and its 52-week low was $5.14. It is currently -4.98% from its 52-week high and 397.28% from its 52-week low.

How much is Upstream Bio stock worth today?

(NASDAQ: UPB) Upstream Bio currently has 54,038,591 outstanding shares. With Upstream Bio stock trading at $25.56 per share, the total value of Upstream Bio stock (market capitalization) is $1.38B.

Upstream Bio stock was originally listed at a price of $22.00 in Oct 11, 2024. If you had invested in Upstream Bio stock at $22.00, your return over the last 1 years would have been 16.18%, for an annualized return of 16.18% (not including any dividends or dividend reinvestments).

How much is Upstream Bio's stock price per share?

(NASDAQ: UPB) Upstream Bio stock price per share is $25.56 today (as of Nov 18, 2025).

What is Upstream Bio's Market Cap?

(NASDAQ: UPB) Upstream Bio's market cap is $1.38B, as of Nov 19, 2025.

Market cap (market capitalization) is the total market value of a publicly traded company's outstanding shares.

Upstream Bio's market cap is calculated by multiplying UPB's current stock price of $25.56 by UPB's total outstanding shares of 54,038,591.
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Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.