Upstream Bio, Inc. (NASDAQ:UPB) — Market Cap & Net Worth

$507.96 Million USD  · Rank #12457

Market Cap & Net Worth: Upstream Bio, Inc. (UPB)

Upstream Bio, Inc. (NASDAQ:UPB) has a market capitalization of $507.96 Million ($507.96 Million) as of May 4, 2026. Listed on the NASDAQ stock exchange, this USA-based company holds position #12457 globally and #2923 in its home market, demonstrating a -2.08% decrease in market value over the past year.

Market capitalization, also known as net worth in stock markets, is calculated by multiplying Upstream Bio, Inc.'s stock price $9.40 by its total outstanding shares 54038591 (54.04 Million). Analyse cash efficiency ratio of Upstream Bio, Inc. to see how efficiently the company converts income to cash.

Upstream Bio, Inc. Market Cap History: 2024 to 2026

Upstream Bio, Inc.'s market capitalization history from 2024 to 2026. Data shows change from $888.39 Million to $507.96 Million (-31.66% CAGR).

Index Memberships

Upstream Bio, Inc. is a constituent of 2 market indices:

Index Total Market Cap Weight (%) Rank by Market Cap
NASDAQ Health Care
IXHC
$2.41 Trillion 0.02% #322 of 976
NASDAQ Composite
IXIC
$38.77 Trillion 0.00% #1193 of 3165

Weight: Upstream Bio, Inc.'s market cap as a percentage of total index value. Rank: Position among all constituents by market cap.

Upstream Bio, Inc. Market Cap to Earnings & Revenue Ratios Timeline

This chart shows how Upstream Bio, Inc.'s valuation ratios have evolved. The Price to Sales (P/S) ratio compares market cap to revenue, while the Price to Earnings (P/E) ratio compares market cap to net income. Lower values may indicate a more undervalued company relative to its financial performance.

Latest Price to Sales (P/S) Ratio

374.85x

Upstream Bio, Inc.'s market cap is 374.85 times its annual revenue

Industry average: 3784.39x Lower than industry average

Latest Price to Earnings (P/E) Ratio

N/A

P/E ratio not applicable due to negative or zero earnings

What These Ratios Tell Investors:

  • Price to Sales (P/S) Ratio: Shows how much investors are paying for each dollar of the company's sales. Lower P/S ratios may indicate undervaluation.
  • Price to Earnings (P/E) Ratio: Shows how much investors are paying for each dollar of the company's earnings. This is one of the most common valuation metrics.
  • Trends in these ratios over time can indicate changing investor sentiment about the company's future growth prospects.
  • Industry comparison provides context for whether the company is valued higher or lower than peers.
Year Market Cap (USD) Revenue (USD) Net Income (USD) P/S Ratio P/E Ratio
2024 $888.39 Million $2.37 Million -$62.81 Million 374.85x N/A

Competitor Companies of UPB by Market Capitalization

Companies near Upstream Bio, Inc. in the global market cap rankings as of May 4, 2026.

Key companies related to Upstream Bio, Inc. by market ranking:

  • Vertex Pharmaceuticals Inc (NASDAQ:VRTX): Ranked #223 globally with a market cap of $107.56 Billion USD.
  • Regeneron Pharmaceuticals Inc (NASDAQ:REGN): Ranked #367 globally with a market cap of $72.88 Billion USD.
  • UCB SA (BR:UCB): Ranked #517 globally with a market cap of $51.45 Billion USD ( €44.01 Billion EUR).
  • argenx NV ADR (NASDAQ:ARGX): Ranked #568 globally with a market cap of $45.97 Billion USD.
Market capitalization comparison (in billions USD)
Rank Company Symbol Market Cap Price
#223 Vertex Pharmaceuticals Inc NASDAQ:VRTX $107.56 Billion $423.92
#367 Regeneron Pharmaceuticals Inc NASDAQ:REGN $72.88 Billion $701.42
#517 UCB SA BR:UCB $51.45 Billion €231.20
#568 argenx NV ADR NASDAQ:ARGX $45.97 Billion $787.95

Upstream Bio, Inc. Historical Marketcap From 2024 to 2026

Between 2024 and today, Upstream Bio, Inc.'s market cap moved from $888.39 Million to $ 507.96 Million, with a yearly change of -31.66%.

Year Market Cap Change (%)
2026 $507.96 Million -65.38%
2025 $1.47 Billion +65.15%
2024 $888.39 Million --

End of Day Market Cap According to Different Sources

On May 4th, 2026 the market cap of Upstream Bio, Inc. was reported to be:

Source Market Cap
Yahoo Finance $507.96 Million USD
MoneyControl $507.96 Million USD
MarketWatch $507.96 Million USD
marketcap.company $507.96 Million USD
Reuters $507.96 Million USD

Market cap values may vary slightly between sources due to differences in calculation methods, timing, and data refresh rates.

About Upstream Bio, Inc.

NASDAQ:UPB USA Biotechnology
Market Cap
$507.96 Million
Market Cap Rank
#12457 Global
#2923 in USA
Share Price
$9.40
Change (1 day)
+2.40%
52-Week Range
$7.36 - $32.60
All Time High
$32.60
About

Upstream Bio, Inc., a clinical-stage biotechnology company, develops treatments for inflammatory diseases focusing on severe respiratory disorders. It offers verekitug, which is in Phase 2 clinical development for the treatment of severe asthma and chronic rhinosinusitis with nasal polyps, and in Phase I clinical trial for treating chronic obstructive pulmonary disease. The company was incorporat… Read more