Why is TNDM Down Today?

TNDM
$17.31
▼ -5.49% ($-0.95)
Last updated: Sep 11, 2026 8:31 PM ET (138 min ago)

About Tandem Diabetes Care, Inc.

Tandem Diabetes designs, manufactures, and markets durable insulin pumps for individuals with diabetes. The firm first entered this market in 2012 and has since introduced multiple generations of pumps leading to its current t:slim X2 device. The firm recently launched its smaller Mobi pump and cont...

Sector: SURGICAL & MEDICAL INSTRUMENTS & APPARATUS
Market Cap: $838.54M
Forward P/E: -19.3
52-Week Range: $11.46 - $29.65
Employees: 2,650

Overall Confidence: 60%

60% Confident

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

SYMPATHY 60% Confidence
🎯 Outperforming sector by 5.7%
This stock is significantly underperforming its SURGICAL & MEDICAL INSTRUMENTS & APPARATUS sector peers, suggesting a stock-specific catalyst.

✅ Move Confirmation

LOW VOLUME 0.8x average volume

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

📍 Sector Context

SURGICAL & MEDICAL INSTRUMENTS & APPARATUS sector: +0.2%

TNDM is outperforming its sector by -5.7%. This suggests a stock-specific catalyst.

Market Comparison

TNDM is significantly underperforming the market (-6.3% vs SPY)
S&P 500
SPY
+0.85%
Nasdaq 100
QQQ
+0.87%
TNDM
This Stock
-5.49%
vs S&P 500: -6.34%
vs Nasdaq: -6.36%

📊 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, TNDM is expected to trade between:
$16.79 - $17.65

Key Level to Watch

$16.44 support
Watch for breakdown below $17.30

Quick Trade Ideas

Options strategies to consider for TNDM's -5% move

📊

No Options Available

TNDM doesn't have listed options or options data is currently unavailable.

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Disclaimer: These are educational examples only, not investment advice. Options involve significant risk including total loss of premium. Prices shown are estimates and may differ from actual market prices. Always do your own research and consider your risk tolerance.

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

Last updated: Sep 11, 2026 8:31 PM (138 minutes ago)
Data refreshes every 30 minutes during market hours

Options Market Insight

Neutral
Options Sentiment
1.22
Put/Call Ratio
142.2%
Implied Volatility
Call Volume: 5,627
Put Volume: 6,839
Total: 12,466

Historical Context

TNDM has moved more than 3.0% down on 55 occasions in the past year.

60.0%
Continuation Rate
33/55 times continued down
-0.02%
Avg Next Day Change
After similar down moves
Last similar move: Sep 10, 2026 (-4.2%) → Next day: -5.5%

Frequently Asked Questions

Why is TNDM stock down today?

This stock is significantly underperforming its SURGICAL & MEDICAL INSTRUMENTS & APPARATUS sector peers, suggesting a stock-specific catalyst.

Is TNDM stock a buy or sell right now?

Based on current analysis, TNDM shows 60% confidence in today's move. Volume is low which does not confirm the trend. View full buy/sell analysis →

What is the TNDM stock price target?

TNDM is currently trading at $17.31. Based on today's momentum, the expected short-term range is $16.79 - $17.65. See long-term price prediction →

Will TNDM stock continue falling?

Our analysis shows a 45% probability that TNDM's move continues in the next 1-3 days. Key level to watch: $16.44 (support).

Is TNDM stock oversold or overbought?

TNDM's RSI (Relative Strength Index) is currently at 28.0. This indicates oversold conditions - the stock may be due for a bounce as selling pressure appears exhausted.

What is the momentum for TNDM stock?

TNDM's 10-day momentum indicator is at -4.29. Strong bearish momentum - the stock is experiencing significant downward pressure. Watch for potential reversal signals.

Is TNDM outperforming or underperforming the market?

TNDM (-5.49%) is currently significantly underperforming the market (-6.3% vs SPY). Today, the S&P 500 (SPY) is up 0.85%, and Nasdaq (QQQ) is up 0.87%.

What does MACD indicate for TNDM?

TNDM's MACD (-0.45) is currently below the signal line (0.18), indicating a bearish trend. This technical signal suggests selling pressure is dominant. The trend strength (ADX: 22.4) is moderate.

Is TNDM in an uptrend or downtrend?

Based on moving average analysis, TNDM 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: $21.18, 50-day SMA: $19.37.

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