Why is UPB Down Today?

UPB
$3.27
▼ -3.25% ($-0.11)
Last updated: Nov 11, 2026 8:30 PM ET (349 min ago)

About Upstream Bio, Inc. Common Stock

Upstream Bio Inc is a clinical-stage biotechnology company developing treatments for inflammatory diseases, with an initial focus on severe respiratory disorders. It is developing verekitug, the known antagonist currently in clinical development that targets the receptor for Thymic Stromal Lymphopoi...

Sector: PHARMACEUTICAL PREPARATIONS
Market Cap: $1.00B
Forward P/E: -8.0
52-Week Range: $2.68 - $33.68

Overall Confidence: 67%

67% Confident

Based on news, social sentiment, options activity, and sector analysis

OPTIONS 75% Confidence
🎯 Unusual PUT buying detected
Options traders are heavily buying puts on UPB, with 78% of volume in puts. This suggests bearish institutional positioning.
SYMPATHY 60% Confidence
Outperforming sector by 3.9%
This stock is significantly underperforming its PHARMACEUTICAL PREPARATIONS sector peers, suggesting a stock-specific catalyst.

✅ Move Confirmation

LOW VOLUME 0.7x average volume

UNCONFIRMED - Low volume suggests this move may not be sustainable.

📍 Sector Context

PHARMACEUTICAL PREPARATIONS sector: +0.6%

UPB is outperforming its sector by -3.9%. This suggests a stock-specific catalyst.

Market Comparison

UPB is significantly underperforming the market (-4.6% vs SPY)
S&P 500
SPY
+1.32%
Nasdaq 100
QQQ
+2.31%
UPB
This Stock
-3.25%
vs S&P 500: -4.57%
vs Nasdaq: -5.56%

📊 What Happens Next?

Probability Analysis

45% chance this move continues in the next 1-3 days

Expected Range

Based on historical patterns and options pricing, UPB is expected to trade between:
$3.17 - $3.34

Key Level to Watch

$3.11 support
Watch for breakdown below $3.27

🔔 Get UPB Alerts

We'll notify you when UPB's trend changes or a new signal fires.

Last updated: Nov 11, 2026 8:30 PM (349 minutes ago)
Data refreshes every 30 minutes during market hours

Options Market Insight

Bearish
Options Sentiment
4.42
Put/Call Ratio
210.3%
Implied Volatility
Call Volume: 1,768
Put Volume: 7,809
Total: 9,577

Historical Context

UPB has moved more than 3.0% down on 59 occasions in the past year.

52.5%
Continuation Rate
31/59 times continued down
-1.02%
Avg Next Day Change
After similar down moves
Last similar move: Nov 10, 2026 (-5.6%) → Next day: -3.3%

Frequently Asked Questions

Why is UPB stock down today?

Options traders are heavily buying puts on UPB, with 78% of volume in puts. This suggests bearish institutional positioning.

Is UPB stock a buy or sell right now?

Based on current analysis, UPB shows 67% confidence in today's move. Volume is low which does not confirm the trend. View full buy/sell analysis →

What is the UPB stock price target?

UPB is currently trading at $3.27. Based on today's momentum, the expected short-term range is $3.17 - $3.34. See long-term price prediction →

Will UPB stock continue falling?

Our analysis shows a 45% probability that UPB's move continues in the next 1-3 days. Key level to watch: $3.11 (support).

Is UPB stock oversold or overbought?

UPB's RSI (Relative Strength Index) is currently at 41.5. This shows bearish momentum - the stock has negative momentum but isn't oversold yet.

What is the momentum for UPB stock?

UPB's 10-day momentum indicator is at 0.22. Positive momentum - the stock has mild upward pressure supporting the current trend.

Is UPB outperforming or underperforming the market?

UPB (-3.25%) is currently significantly underperforming the market (-4.6% vs SPY). Today, the S&P 500 (SPY) is up 1.32%, and Nasdaq (QQQ) is up 2.31%.

What does MACD indicate for UPB?

UPB's MACD (-0.28) is currently above the signal line (-0.4), indicating a bullish trend. This technical signal suggests buying pressure is dominant. The trend strength (ADX: 36.5) is strong.

Is UPB in an uptrend or downtrend?

Based on moving average analysis, UPB is in a mixed/transitional trend. The price and moving averages are not clearly aligned, suggesting a potential trend change or consolidation phase. 20-day SMA: $3.13, 50-day SMA: $4.38.

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