UPB · Upstream Bio, Inc.

NASDAQ NMS - GLOBAL MARKET - BOATS Real Time Price • USD

Upstream Bio Inc (UPB)

NASDAQ NMS - GLOBAL MARKET Biotechnology
Move probability → Options chain →
$2.79 -0.01 (-0.36%)
● At close: October 21 at 4:00:00 PM EDT
DAY'S RANGE $2.79
$2.77 $2.95
52-WEEK RANGE $2.79
$2.74 $33.68

What's happening

Deterministic template sentences filled in from the same sourced figures shown elsewhere on this page -- not an AI-written summary, no live model call.

Key Statistics

Market Cap$153.4M
P/E (TTM1)—
EPS2 (TTM)$-2.89
Div Yield—
Beta32.97
Volume110,601
Open2.88
Prev Close2.81
Bid / Ask2.39 / 0.00
Next Earnings 2026-11-05

Analyst Recommendations

Strong buy 2 Buy 7 Hold 3 Sell 0 Strong sell 0

Aggregate ratings for 2026-10-01 (12 analysts polled by Finnhub) — consensus count.

Performance Overview (Trailing returns vs S&P 500 benchmark)

YTD RETURN
UPB -89.61%
vs S&P 500 -102.39%
1-YEAR RETURN
UPB -87.77%
vs S&P 500 -102.33%
6-MONTH RETURN
UPB -72.08%
3-MONTH RETURN
UPB -59.60%

Valuation Measures & Ratios

Enterprise Value4$75.1M
Forward P/E5—
PEG Ratio6-0.02
Price / Sales (TTM1)48.91
Price / Book71.39
EV4 / Revenue23.77
EV4 / EBITDA—
Profit Margin-4955.67%
Operating Margin-5382.65%
Return on Equity (ROE8)-48.40%
Return on Assets (ROA9)-46.57%
Avg Volume (3M)723,500
Quarterly history (5 periods)
Measure Jun '26Mar '26Sep '25Jun '25Mar '25
Market cap $376.1M $485.5M $1.01B $593.5M $327.8M
P/E -2.44 -3.43 -8.61 -6.06 -4.76
Price/Sales 109.74 150.77 360.77 226.55 141.10
Price/Book 1.39 1.60 2.66 1.45 0.74
EV/Revenue 86.57 120.73 334.93 209.20 110.40
EV/EBITDA -1.77 -2.47 -7.04 — —
ROE -56.84% -46.57% -30.90% -23.95% -15.45%
ROA -54.77% -44.51% -29.90% -23.28% -15.09%

Trailing-twelve-month ratios computed from SEC EDGAR quarterly figures and historical daily close prices (Alpaca). Diluted shares are derived from Net income ÷ EPS (diluted) for each quarter, not separately reported. Forward P/E/PEG unavailable (no free data source).

Glossary — what these abbreviations mean
1. TTM
Trailing twelve months — the sum of the last four reported quarters, not a calendar year or the single latest quarter.
2. EPS
Earnings per share — net income divided by diluted shares outstanding.
3. Beta
A stock's historical volatility relative to the overall market. Above 1 means it has moved more than the market; below 1, less.
4. EV (Enterprise Value)
Market cap plus total debt minus cash — roughly what it would cost to buy the whole company, debt included.
5. Forward P/E
Price divided by analysts' estimated earnings for the next 12 months, instead of trailing actual earnings.
6. PEG Ratio
P/E divided by expected earnings growth rate. A lower number can indicate a stock is cheap relative to how fast it's expected to grow.
7. Price / Book
Share price divided by book value (assets minus liabilities) per share.
8. ROE
Return on equity — net income divided by shareholders' equity, a measure of how efficiently a company turns equity into profit.
9. ROA
Return on assets — net income divided by total assets, a measure of how efficiently a company turns assets into profit.
10. MRQ
Most recent quarter — the single latest reported period, as opposed to TTM. The Financials section's "Quarterly" view below shows MRQ-style figures.
11. YoY
Year over year — percent change versus the same period one year earlier, used for growth figures like those on Compare cards and the Screener.

Short Interest

Shares Short4,514,865
Change from Prior Settlement+0.54%
% of Float—
Days to Cover (Short Ratio)7.68

Source: FINRA Rule 4560 consolidated short interest, settlement date 2026-09-30. Reported bi-monthly with a reporting lag — not real-time.

Quotes and the 1-day extended-hours chart: Yahoo Finance. Longer historical charts: Alpaca (IEX feed) — real-time but IEX-only volume (~2.5% of consolidated market volume). Fundamentals + earnings: Finnhub.

Price history

Events

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Technical signal summary

Calculating from the latest year of daily price history…

Calculating…
Show Technical Analysis Breakdown ▾ 10 Indicators

Not investment advice — read several signals together.

Indicators None active

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Starter sets
Trend
Oscillators
Volume/volatility
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History limited by data provider; markers are heuristics, not signals.

Peer and sector context

No reviewed peer group is available for this symbol.

Balanced evidence

A deterministic summary of sourced facts—not an AI verdict.

Potential strengths

  • Latest SEC filing is Form 4, filed 2026-09-17; review it for current changes and risks. SEC EDGAR ↗

Potential concerns

Rule-based facts only; absence from either side is not evidence, and this is not a recommendation.

Financials

Income statement

Line item Jun '26Mar '26Sep '25Jun '25Mar '25Sep '24Jun '24Mar '24
Revenue $773.0K $1.0M $683.0K $937.0K $566.0K $607.0K $510.0K $640.0K
Operating income -$42.4M -$43.6M -$37.8M -$44.3M -$32.0M -$18.9M -$17.5M -$15.0M
Net income -$39.7M -$40.6M -$33.7M -$40.0M -$27.3M -$16.0M -$14.7M -$10.9M
EPS (diluted) $-0.73 $-0.75 $-0.63 $-0.74 $-0.51 $-6.96 $-6.50 $-4.68
EPS (basic) $-0.73 $-0.75 $-0.63 $-0.74 $-0.51 $-6.96 $-6.50 $-4.68
Operating margin -$5.5K -$4.2K -$5.5K -$4.7K -$5.7K -$3.1K -$3.4K -$2.3K

Balance sheet

Line item Jun '26Mar '26Dec '25Sep '25Jun '25Mar '25Dec '24Sep '24
Total assets $281.2M $318.1M $353.8M $391.2M $420.5M $456.2M $481.7M $232.7M
Total liabilities $10.2M $14.1M $14.0M $12.6M $11.8M $10.6M $11.9M $12.1M
Stockholders' equity $271.0M $304.0M $339.8M $378.6M $408.7M $445.6M $469.9M -$160.3M
Total current assets $279.6M $316.3M $351.8M $389.0M $418.3M $453.8M $479.2M $227.3M
Total current liabilities $10.0M $13.7M $13.5M $11.9M $10.9M $9.6M $10.7M $10.9M
Cash & equivalents $79.4M $96.7M $101.6M $72.2M $45.5M $71.3M $325.9M $32.9M

Cash flow

Line item Jun '26Mar '26Dec '25Sep '25Jun '25Mar '25Dec '24Sep '24
Operating cash flow -$35.6M -$47.9M -$30.6M -$22.2M -$39.2M -$41.2M -$19.6M -$14.0M
Investing cash flow $15.8M $42.4M $58.9M $48.2M $12.8M -$213.4M $41.9M $1.4M
Financing cash flow $2.5M $598.0K $1.1M $760.0K $612.0K -$34.0K $270.6M -$1.6M
Free cash flow -$35.6M — -$30.7M -$22.3M -$39.3M — -$19.8M -$14.3M
Capital expenditures $0 — $54.0K $64.0K $47.0K — $185.0K $326.0K
Depreciation & amortization $50.0K $49.0K $57.0K $46.0K $42.0K $43.0K $49.0K $14.0K

Source: SEC EDGAR XBRL filings (10-Q/10-K), as originally tagged by the company. Quarterly cash flow is reconstructed by de-cumulating fiscal-year-to-date figures (how cash flow is tagged in 10-Qs); other quarterly lines are reported directly.

Institutional holders

SEC Form 13F filers holding UPB as of the latest reported quarter. 13F only covers investment managers with $100M+ in assets — this is not a complete ownership picture, and does not include insiders (see Recent SEC filings below) or non-13F-eligible holders.

Institutional ownership is not available for this symbol right now.

Insider activity

Directors, officers, and 10%+ owners' reported transactions from SEC Form 4. A filing reports a transaction; it does not by itself explain why it happened.

Insider activity is not available for this symbol right now.

Recent SEC filings

Official company reports and insider transaction filings. Form 4 reports a transaction; it does not by itself explain why it happened.

Source: SEC EDGAR submissions · updated 2026-10-22 02:56 UTC

FiledFormReport periodOfficial filing
2026-09-1742026-09-16 View on SEC.gov →
2026-09-1742026-09-16 View on SEC.gov →
2026-09-1742026-09-16 View on SEC.gov →
2026-09-1742026-09-16 View on SEC.gov →
2026-09-1742026-09-16 View on SEC.gov →
2026-09-018-K2026-09-01 View on SEC.gov →
2026-08-1110-Q2026-06-30 View on SEC.gov →
2026-08-118-K2026-08-11 View on SEC.gov →
2026-06-1742026-06-16 View on SEC.gov →
2026-06-1742026-06-16 View on SEC.gov →
2026-06-1742026-06-16 View on SEC.gov →
2026-06-1742026-06-16 View on SEC.gov →

Headlines about UPB (Upstream Bio, Inc.). Links open the publisher — we don’t host full articles.

SEC filings ↓

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