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UPB · Upstream Bio, Inc.

Track UPB — free
$4.85 -0.19 (-3.77%) At close · Oct 5
Market Cap
$293.57M
Shares
54.77M
Volume · Oct 5 1.01M Avg daily vol (3M) 598.16K

Price & Indicators

Drag to pan · scroll to zoom
20d MA 50d MA 200d MA Earnings Filing Insider Congress Investor day
Close$4.85 Open$5.07 Day$4.67–5.10 52W close$4.85–32.60 Avg vol 30d640K Short int4.5M · 8.2% float · 6.8d Short vol30% Last earningsAug 11, 2026 DataOct 2024–Oct 2026 Filing10-Q · Aug 11

Up next

Next earnings call
Nov 10, 2026 Est · unconfirmed · in 5 wks
filed Aug 11, 2026

Metrics snapshot

Useful current figures from the complete screener profile.

Revenue (TTM)
$3.16M
Trailing 12 months
Net income (TTM)
−$156.50M
Trailing 12 months
Revenue growth YoY
-17.5%
Year over year
Operating margin
-5,382.6%
Trailing 12 months
P / E (TTM)
—
Trailing earnings
FCF yield
—
TTM · current market cap
Return on invested capital
—
Trailing 12 months
Net cash
$261.31M
Latest balance sheet
Dividend yield
—
Trailing 12 months
Shares change YoY
+1.5%
Year over year · more shares
Price change (1Y)
-72.9%
Trailing year
Short interest
8.2%
Latest settlement · 6.8 days to cover
View all 115 metrics

Equibles Rating

blended score · not investment advice
Overall
Sell
SellHoldBuy
Technical Strong Sell Momentum Very Weak Sentiment Neutral Fundamentals Strong Quant / Vol Very High
Market backdrop VIX 15.5 · calm Equity put/call 0.59
Technical
price trend
Strong Sell
50 / 200-day cross No cross
Price vs 200-day avg −59%
below
Price vs 50-day avg −22%
below
RSI (14) 29
oversold
MACD trend Negative
52-week position 0%
near low
Volume (OBV) Confirms
volume backs price
Momentum
relative strength
Very Weak
1-month return −19%
trailing
6-month return −53%
trailing
YTD return −82%
this year
Relative strength −65%
vs S&P · 6-mo
Sentiment
smart money
Neutral
Trend (MA cross) No cross
50d $6 › 200d $12 — 200d above 50d
Institutional flow Accumulating
+5% holders QoQ · +36 funds added
Insider flow Distributing
Net -$27.6K over 90 days · 100% sells
Short interest Rising
8.20% of float · ▲ +9.7% MoM · 6.8 days cover
Volume signal Reversal watch
High volume on a down day — possible exhaustion
Institution breadth Multi-yr high
150 holders — near 1-yr high, broad support
Squeeze score 66
elevated · 0–100
Fundamentals
Strong
Revenue growth +20%
Y/Y
EPS growth +52%
Y/Y
Free cash flow $-133.4M
Quant / Vol
risk profile
Very High
Volatility 87%
annualized · 1-yr
Max drawdown −85%
past year
ATR 6.9%
of price · 14-day

Blended from price, momentum, positioning, fundamentals & volatility · daily-close · not investment advice. Market backdrop is context, not part of the score.

Technicals

trend & momentum for long-term holders Strong Sell
4 · 3 · 0
50 / 200-day cross
No cross Neutral
Price vs 200-day avg
−59% Bearish
Price vs 50-day avg
−22% Bearish
RSI (14)
29 Neutral
MACD trend
Negative Bearish
52-week position
0% Bearish
Volume (OBV)
Confirms Neutral
Market signals — smart money & positioning
Mixed
Trend (MA cross) No cross
50d $6 › 200d $12 — 200d above 50d
Institutional flow Accumulating
+5% holders QoQ · +36 funds added
Insider flow Distributing
Net -$27.6K over 90 days · 100% sells
Short interest Rising
8.20% of float · ▲ +9.7% MoM · 6.8 days cover
Volume signal Reversal watch
High volume on a down day — possible exhaustion
Institution breadth Multi-yr high
150 holders — near 1-yr high, broad support
Price context
position in its 52-week range
Range low $5 Now $5 · 0% Range high $33
vs 200-day avg -59% vs 50-day avg -22%

Illustrative technical + ownership context — a signal mix, not investment advice.

Key metrics

the company's own KPIs, from written earnings releases and filings
Metric Latest Period YoY
stock-based compensation expense (general and administrative personnel expenses) $2.4M the three months ended June 30, 2026 filing —
stock-based compensation expense (research and development personnel expenses) $2M the three months ended June 30, 2026 filing —

Figures exactly as the company stated them in writing · click a metric with a to chart its history · period links open the stating document · "filing" marks figures stated in the 10-K/10-Q · YoY needs an exactly comparable prior-year period

Versus peers

Biotechnology — same industry group
Open screener →
Company Mkt cap YTD Rev growth Y/Y P/E Short % shares
UPB
Upstream Bio, Inc.
this stock
$293.57M -82.1% +20.4% — 8.2%
VRTX
Vertex Pharmaceuticals Inc / Ma
$133.37B +11.1% +46.2% 30.7 1.9%
REGN
Regeneron Pharmaceuticals, Inc.
$81.13B -5.9% +20.8% 19.5 2.5%
MRNA
Moderna, Inc.
$79.40B +589.1% +4.3% — 8.2%
CSLLY
Csl Ltd
$61.25B — — — 0.0%

Peers by industry group · P/E from as-reported trailing EPS · short % is of shares outstanding

At a glance

key data from every section
Ownership
Institutional Holders Accumulating
Holders
150
% held
92.4%
Net QoQ
+5.6M sh
Top holder
FMR LLC
Held Float
View
Held by Funds
Fund positions
152
View
Short & Settlement
Short Interest Rising
Shares short
4.5M
Days to cover
6.8d
Change
+395.7K sh
View
Short Volume
Short vol %
30%
As of
Oct 5, 2026
Short Total
View
Fails to Deliver
FTD shares
704
Value
$4.7K
As of
Aug 31, 2026
View
Off-Exchange
Off-exchange %
40.1%
Week of
Aug 31, 2026
Off-exch Lit
View
Smart Money
Insider Trades Net selling
Net (90d)
-$27.6K
Buyers / Sellers
0 / 5
Buyers Sellers
View
Financials
Financials
Revenue (FY)
$2.9M
Net income (FY)
$-143.4M
EPS diluted
$-2.66
View
Filings
SEC Filings
Latest
8-K
Filed
Sep 1, 2026
This year
13
View
Earnings & Events
Webcasts
Last webcast
Aug 11, 2026
View

Performance

5D 20D 120D MTD YTD
UPB -8.5% -19.3% -53.1% -8.0% -82.1%
SPY +1.2% +0.6% +11.6% +1.6% +13.6%
vs SPY -9.7% -19.9% -64.7% -9.6% -95.8%
Key facts CIK 2022626 CUSIP 91678A107 13F (30d) 2 filings 2 filers Visit website Investor relations